mojoshader_preprocessor.c
author Ryan C. Gordon <icculus@icculus.org>
Thu, 14 Feb 2013 00:46:12 -0500
changeset 1121 4142681f9fda
parent 1120 f655ea9c8ecd
child 1122 b333c15bb984
permissions -rw-r--r--
Allow preprocessor to pass through comments, like GNU cpp does.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/**
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 * MojoShader; generate shader programs from bytecode of compiled
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 *  Direct3D shaders.
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 *
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 * Please see the file LICENSE.txt in the source's root directory.
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 *
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 *  This file written by Ryan C. Gordon.
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 */
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#define __MOJOSHADER_INTERNAL__ 1
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#include "mojoshader_internal.h"
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#if DEBUG_PREPROCESSOR
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    #define print_debug_token(token, len, val) \
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        MOJOSHADER_print_debug_token("PREPROCESSOR", token, len, val)
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#else
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    #define print_debug_token(token, len, val)
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#endif
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#if DEBUG_LEXER
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static Token debug_preprocessor_lexer(IncludeState *s)
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{
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    const Token retval = preprocessor_lexer(s);
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    MOJOSHADER_print_debug_token("LEXER", s->token, s->tokenlen, retval);
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    return retval;
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} // debug_preprocessor_lexer
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#define preprocessor_lexer(s) debug_preprocessor_lexer(s)
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#endif
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#if DEBUG_TOKENIZER
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static void print_debug_lexing_position(IncludeState *s)
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{
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    if (s != NULL)
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        printf("NOW LEXING %s:%d ...\n", s->filename, s->line);
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} // print_debug_lexing_position
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#else
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#define print_debug_lexing_position(s)
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#endif
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typedef struct Context
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{
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    int isfail;
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    int out_of_memory;
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    char failstr[256];
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    int recursion_count;
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    int asm_comments;
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    int parsing_pragma;
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    Conditional *conditional_pool;
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    IncludeState *include_stack;
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    IncludeState *include_pool;
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    Define *define_hashtable[256];
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    Define *define_pool;
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    Define *file_macro;
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    Define *line_macro;
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    StringCache *filename_cache;
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    MOJOSHADER_includeOpen open_callback;
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    MOJOSHADER_includeClose close_callback;
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    MOJOSHADER_malloc malloc;
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    MOJOSHADER_free free;
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    void *malloc_data;
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} Context;
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// Microsoft's preprocessor has some quirks. In some ways, it doesn't work
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//  like you'd expect a C preprocessor to function.
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#ifndef MATCH_MICROSOFT_PREPROCESSOR
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#define MATCH_MICROSOFT_PREPROCESSOR 1
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#endif
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// Convenience functions for allocators...
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static inline void out_of_memory(Context *ctx)
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{
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    ctx->out_of_memory = 1;
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} // out_of_memory
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static inline void *Malloc(Context *ctx, const size_t len)
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{
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    void *retval = ctx->malloc((int) len, ctx->malloc_data);
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    if (retval == NULL)
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        out_of_memory(ctx);
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    return retval;
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} // Malloc
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static inline void Free(Context *ctx, void *ptr)
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{
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    ctx->free(ptr, ctx->malloc_data);
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} // Free
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static void *MallocBridge(int bytes, void *data)
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{
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    return Malloc((Context *) data, (size_t) bytes);
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} // MallocBridge
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static void FreeBridge(void *ptr, void *data)
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{
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    Free((Context *) data, ptr);
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} // FreeBridge
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static inline char *StrDup(Context *ctx, const char *str)
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{
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    char *retval = (char *) Malloc(ctx, strlen(str) + 1);
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    if (retval != NULL)
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        strcpy(retval, str);
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    return retval;
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} // StrDup
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static void failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
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static void failf(Context *ctx, const char *fmt, ...)
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{
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    ctx->isfail = 1;
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    va_list ap;
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    va_start(ap, fmt);
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    vsnprintf(ctx->failstr, sizeof (ctx->failstr), fmt, ap);
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    va_end(ap);
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} // failf
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static inline void fail(Context *ctx, const char *reason)
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{
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    failf(ctx, "%s", reason);
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} // fail
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#if DEBUG_TOKENIZER
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void MOJOSHADER_print_debug_token(const char *subsystem, const char *token,
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                                  const unsigned int tokenlen,
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                                  const Token tokenval)
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{
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    printf("%s TOKEN: \"", subsystem);
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    unsigned int i;
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    for (i = 0; i < tokenlen; i++)
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    {
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        if (token[i] == '\n')
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            printf("\\n");
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        else if (token[i] == '\\')
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            printf("\\\\");
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        else
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            printf("%c", token[i]);
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    } // for
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    printf("\" (");
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    switch (tokenval)
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    {
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        #define TOKENCASE(x) case x: printf("%s", #x); break
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        TOKENCASE(TOKEN_UNKNOWN);
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        TOKENCASE(TOKEN_IDENTIFIER);
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        TOKENCASE(TOKEN_INT_LITERAL);
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        TOKENCASE(TOKEN_FLOAT_LITERAL);
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        TOKENCASE(TOKEN_STRING_LITERAL);
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        TOKENCASE(TOKEN_ADDASSIGN);
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        TOKENCASE(TOKEN_SUBASSIGN);
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        TOKENCASE(TOKEN_MULTASSIGN);
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        TOKENCASE(TOKEN_DIVASSIGN);
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        TOKENCASE(TOKEN_MODASSIGN);
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        TOKENCASE(TOKEN_XORASSIGN);
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        TOKENCASE(TOKEN_ANDASSIGN);
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        TOKENCASE(TOKEN_ORASSIGN);
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        TOKENCASE(TOKEN_INCREMENT);
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        TOKENCASE(TOKEN_DECREMENT);
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        TOKENCASE(TOKEN_RSHIFT);
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        TOKENCASE(TOKEN_LSHIFT);
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        TOKENCASE(TOKEN_ANDAND);
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        TOKENCASE(TOKEN_OROR);
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        TOKENCASE(TOKEN_LEQ);
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        TOKENCASE(TOKEN_GEQ);
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        TOKENCASE(TOKEN_EQL);
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        TOKENCASE(TOKEN_NEQ);
865
4eb06464212d Added stringify operator ("#") to preprocessor.
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        TOKENCASE(TOKEN_HASH);
587
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        TOKENCASE(TOKEN_HASHHASH);
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        TOKENCASE(TOKEN_PP_INCLUDE);
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        TOKENCASE(TOKEN_PP_LINE);
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        TOKENCASE(TOKEN_PP_DEFINE);
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        TOKENCASE(TOKEN_PP_UNDEF);
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        TOKENCASE(TOKEN_PP_IF);
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        TOKENCASE(TOKEN_PP_IFDEF);
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        TOKENCASE(TOKEN_PP_IFNDEF);
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        TOKENCASE(TOKEN_PP_ELSE);
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        TOKENCASE(TOKEN_PP_ELIF);
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        TOKENCASE(TOKEN_PP_ENDIF);
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        TOKENCASE(TOKEN_PP_ERROR);
910
3ee487d85ecb Handle #pragma (or at least, don't fail on them).
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        TOKENCASE(TOKEN_PP_PRAGMA);
604
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        TOKENCASE(TOKEN_INCOMPLETE_COMMENT);
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        TOKENCASE(TOKEN_BAD_CHARS);
1121
4142681f9fda Allow preprocessor to pass through comments, like GNU cpp does.
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        TOKENCASE(TOKEN_SINGLE_COMMENT);
4142681f9fda Allow preprocessor to pass through comments, like GNU cpp does.
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        TOKENCASE(TOKEN_MULTI_COMMENT);
587
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        TOKENCASE(TOKEN_EOI);
598
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
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        TOKENCASE(TOKEN_PREPROCESSING_ERROR);
587
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   187
        #undef TOKENCASE
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   188
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   189
        case ((Token) '\n'):
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   190
            printf("'\\n'");
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   191
            break;
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   192
629
d886403c6609 Better debug token output.
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   193
        case ((Token) '\\'):
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   194
            printf("'\\\\'");
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   195
            break;
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   196
587
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   197
        default:
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   198
            assert(((int)tokenval) < 256);
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   199
            printf("'%c'", (char) tokenval);
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   200
            break;
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   201
    } // switch
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   202
    printf(")\n");
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   203
} // MOJOSHADER_print_debug_token
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   204
#endif
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   205
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   206
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
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   208
#if !MOJOSHADER_FORCE_INCLUDE_CALLBACKS
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   210
// !!! FIXME: most of these _MSC_VER should probably be _WINDOWS?
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   211
#ifdef _MSC_VER
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   212
#define WIN32_LEAN_AND_MEAN 1
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   213
#include <windows.h>  // GL headers need this for WINGDIAPI definition.
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   214
#else
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diff changeset
   215
#include <sys/stat.h>
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diff changeset
   216
#include <fcntl.h>
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   217
#include <unistd.h>
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   218
#endif
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   219
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   220
int MOJOSHADER_internal_include_open(MOJOSHADER_includeType inctype,
8c2ee1a97ee1 Implemented #include in the preprocessor.
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   221
                                     const char *fname, const char *parent,
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   222
                                     const char **outdata,
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   223
                                     unsigned int *outbytes,
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diff changeset
   224
                                     MOJOSHADER_malloc m, MOJOSHADER_free f,
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   225
                                     void *d)
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diff changeset
   226
{
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   227
#ifdef _MSC_VER
882
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   228
    WCHAR wpath[MAX_PATH];
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diff changeset
   229
    if (!MultiByteToWideChar(CP_UTF8, 0, fname, -1, wpath, MAX_PATH))
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   230
        return 0;
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   231
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   232
    const DWORD share = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   233
    const HANDLE handle = CreateFileW(wpath, FILE_GENERIC_READ, share,
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   234
                                      NULL, OPEN_EXISTING, NULL, NULL);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   235
    if (handle == INVALID_HANDLE_VALUE)
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   236
        return 0;
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diff changeset
   237
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   238
    const DWORD fileSize = GetFileSize(handle, NULL);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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parents: 881
diff changeset
   239
    if (fileSize == INVALID_FILE_SIZE)
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   240
    {
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   241
        CloseHandle(handle);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   242
        return 0;
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diff changeset
   243
    } // if
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   244
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   245
    char *data = (char *) m(fileSize, d);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   246
    if (data == NULL)
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   247
    {
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   248
        CloseHandle(handle);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   249
        return 0;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   250
    } // if
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   251
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   252
    DWORD readLength = 0;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   253
    if (!ReadFile(handle, data, fileSize, &readLength, NULL))
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   254
    {
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   255
        CloseHandle(handle);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   256
        f(data, d);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   257
        return 0;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   258
    } // if
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   259
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   260
    CloseHandle(handle);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   261
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   262
    if (readLength != fileSize)
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   263
    {
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   264
        f(data, d);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   265
        return 0;
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diff changeset
   266
    } // if
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diff changeset
   267
    *outdata = data;
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diff changeset
   268
    *outbytes = fileSize;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   269
    return 1;
611
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diff changeset
   270
#else
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diff changeset
   271
    struct stat statbuf;
8c2ee1a97ee1 Implemented #include in the preprocessor.
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diff changeset
   272
    if (stat(fname, &statbuf) == -1)
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        return 0;
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    char *data = (char *) m(statbuf.st_size, d);
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    if (data == NULL)
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        return 0;
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    const int fd = open(fname, O_RDONLY);
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    if (fd == -1)
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    {
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        f(data, d);
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        return 0;
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    } // if
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    if (read(fd, data, statbuf.st_size) != statbuf.st_size)
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    {
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        f(data, d);
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        close(fd);
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   287
        return 0;
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   288
    } // if
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   289
    close(fd);
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    *outdata = data;
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    *outbytes = (unsigned int) statbuf.st_size;
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    return 1;
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#endif
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} // MOJOSHADER_internal_include_open
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void MOJOSHADER_internal_include_close(const char *data, MOJOSHADER_malloc m,
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                                       MOJOSHADER_free f, void *d)
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{
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    f((void *) data, d);
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} // MOJOSHADER_internal_include_close
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#endif  // !MOJOSHADER_FORCE_INCLUDE_CALLBACKS
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647
a09899ba5e8c Added some FIXMEs.
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// !!! FIXME: maybe use these pool magic elsewhere?
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// !!! FIXME: maybe just get rid of this? (maybe the fragmentation isn't a big deal?)
632
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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646
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// Pool stuff...
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// ugh, I hate this macro salsa.
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#define FREE_POOL(type, poolname) \
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    static void free_##poolname##_pool(Context *ctx) { \
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        type *item = ctx->poolname##_pool; \
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        while (item != NULL) { \
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   314
            type *next = item->next; \
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   315
            Free(ctx, item); \
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   316
            item = next; \
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   317
        } \
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   318
    }
620
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646
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#define GET_POOL(type, poolname) \
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   321
    static type *get_##poolname(Context *ctx) { \
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        type *retval = ctx->poolname##_pool; \
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   323
        if (retval != NULL) \
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   324
            ctx->poolname##_pool = retval->next; \
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   325
        else \
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            retval = (type *) Malloc(ctx, sizeof (type)); \
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   327
        if (retval != NULL) \
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   328
            memset(retval, '\0', sizeof (type)); \
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   329
        return retval; \
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   330
    }
620
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646
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#define PUT_POOL(type, poolname) \
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   333
    static void put_##poolname(Context *ctx, type *item) { \
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   334
        item->next = ctx->poolname##_pool; \
672
bcca8b3ae152 Fixed memory pool code.
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   335
        ctx->poolname##_pool = item; \
646
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    }
620
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   337
646
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   338
#define IMPLEMENT_POOL(type, poolname) \
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    FREE_POOL(type, poolname) \
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   340
    GET_POOL(type, poolname) \
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   341
    PUT_POOL(type, poolname)
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   342
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   343
IMPLEMENT_POOL(Conditional, conditional)
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   344
IMPLEMENT_POOL(IncludeState, include)
676
29447167fc68 Renamed DefineHash to Define.
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   345
IMPLEMENT_POOL(Define, define)
620
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   346
611
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   347
555
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   348
// Preprocessor define hashtable stuff...
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   349
841
05fa7ce0a202 Added a FIXME.
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diff changeset
   350
// !!! FIXME: why isn't this using mojoshader_common.c's code?
05fa7ce0a202 Added a FIXME.
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   351
729
92cc053fbf75 Put in a much better string hashing algorithm.
Ryan C. Gordon <icculus@icculus.org>
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   352
// this is djb's xor hashing function.
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   353
static inline uint32 hash_string_djbxor(const char *sym)
555
940821555fda Initial work on preprocessor. Not yet complete!
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parents:
diff changeset
   354
{
729
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   355
    register uint32 hash = 5381;
622
59b3003f6494 Fixed logic bug in string loop.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   356
    while (*sym)
729
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   357
        hash = ((hash << 5) + hash) ^ *(sym++);
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   358
    return hash;
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   359
} // hash_string_djbxor
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diff changeset
   360
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   361
static inline uint8 hash_define(const char *sym)
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   362
{
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   363
    return (uint8) hash_string_djbxor(sym);
555
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parents:
diff changeset
   364
} // hash_define
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diff changeset
   365
940821555fda Initial work on preprocessor. Not yet complete!
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diff changeset
   366
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
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diff changeset
   367
static int add_define(Context *ctx, const char *sym, const char *val,
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
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diff changeset
   368
                      char **parameters, int paramcount)
555
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parents:
diff changeset
   369
{
729
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   370
    const uint8 hash = hash_define(sym);
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   371
    Define *bucket = ctx->define_hashtable[hash];
555
940821555fda Initial work on preprocessor. Not yet complete!
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parents:
diff changeset
   372
    while (bucket)
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parents:
diff changeset
   373
    {
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   374
        if (strcmp(bucket->identifier, sym) == 0)
555
940821555fda Initial work on preprocessor. Not yet complete!
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parents:
diff changeset
   375
        {
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   376
            failf(ctx, "'%s' already defined", sym); // !!! FIXME: warning?
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
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parents: 873
diff changeset
   377
            // !!! FIXME: gcc reports the location of previous #define here.
555
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parents:
diff changeset
   378
            return 0;
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parents:
diff changeset
   379
        } // if
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parents:
diff changeset
   380
        bucket = bucket->next;
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parents:
diff changeset
   381
    } // while
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diff changeset
   382
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
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diff changeset
   383
    bucket = get_define(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   384
    if (bucket == NULL)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
        return 0;
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parents:
diff changeset
   386
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   387
    bucket->definition = val;
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   388
    bucket->original = NULL;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   389
    bucket->identifier = sym;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   390
    bucket->parameters = (const char **) parameters;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   391
    bucket->paramcount = paramcount;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
    bucket->next = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
    ctx->define_hashtable[hash] = bucket;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
    return 1;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   395
} // add_define
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parents:
diff changeset
   396
940821555fda Initial work on preprocessor. Not yet complete!
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diff changeset
   397
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   398
static void free_define(Context *ctx, Define *def)
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   399
{
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   400
    if (def != NULL)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   401
    {
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   402
        int i;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   403
        for (i = 0; i < def->paramcount; i++)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   404
            Free(ctx, (void *) def->parameters[i]);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   405
        Free(ctx, (void *) def->parameters);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   406
        Free(ctx, (void *) def->identifier);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   407
        Free(ctx, (void *) def->definition);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   408
        Free(ctx, (void *) def->original);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   409
        put_define(ctx, def);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   410
    } // if
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   411
} // free_define
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   412
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   413
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   414
static int remove_define(Context *ctx, const char *sym)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
{
729
92cc053fbf75 Put in a much better string hashing algorithm.
Ryan C. Gordon <icculus@icculus.org>
parents: 727
diff changeset
   416
    const uint8 hash = hash_define(sym);
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   417
    Define *bucket = ctx->define_hashtable[hash];
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   418
    Define *prev = NULL;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   419
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   420
    {
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   421
        if (strcmp(bucket->identifier, sym) == 0)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   422
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   423
            if (prev == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   424
                ctx->define_hashtable[hash] = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   425
            else
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   426
                prev->next = bucket->next;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   427
            free_define(ctx, bucket);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   428
            return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   429
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   430
        prev = bucket;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   431
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   432
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   433
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   434
    return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   435
} // remove_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   437
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   438
static const Define *find_define(Context *ctx, const char *sym)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
{
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   440
    if ( (ctx->file_macro) && (strcmp(sym, "__FILE__") == 0) )
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   441
    {
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   442
        Free(ctx, (char *) ctx->file_macro->definition);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   443
        const IncludeState *state = ctx->include_stack;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   444
        const char *fname = state ? state->filename : "";
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   445
        const size_t len = strlen(fname) + 2;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   446
        char *str = (char *) Malloc(ctx, len);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   447
        if (!str)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   448
            return NULL;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   449
        str[0] = '\"';
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   450
        memcpy(str + 1, fname, len - 2);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   451
        str[len - 1] = '\"';
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   452
        ctx->file_macro->definition = str;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   453
        return ctx->file_macro;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   454
    } // if
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   455
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   456
    else if ( (ctx->line_macro) && (strcmp(sym, "__LINE__") == 0) )
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   457
    {
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   458
        Free(ctx, (char *) ctx->line_macro->definition);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   459
        const IncludeState *state = ctx->include_stack;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   460
        const size_t bufsize = 32;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   461
        char *str = (char *) Malloc(ctx, bufsize);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   462
        if (!str)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   463
            return 0;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   464
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   465
        const size_t len = snprintf(str, bufsize, "%u", state->line);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   466
        assert(len < bufsize);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   467
        ctx->line_macro->definition = str;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   468
        return ctx->line_macro;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   469
    } // else
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   470
729
92cc053fbf75 Put in a much better string hashing algorithm.
Ryan C. Gordon <icculus@icculus.org>
parents: 727
diff changeset
   471
    const uint8 hash = hash_define(sym);
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   472
    Define *bucket = ctx->define_hashtable[hash];
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
    {
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   475
        if (strcmp(bucket->identifier, sym) == 0)
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   476
            return bucket;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   477
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   478
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   479
    return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
} // find_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   481
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
699
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   483
static const Define *find_define_by_token(Context *ctx)
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   484
{
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   485
    IncludeState *state = ctx->include_stack;
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   486
    assert(state->tokenval == TOKEN_IDENTIFIER);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   487
    char *sym = (char *) alloca(state->tokenlen+1);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   488
    memcpy(sym, state->token, state->tokenlen);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   489
    sym[state->tokenlen] = '\0';
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   490
    return find_define(ctx, sym);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   491
} // find_define_by_token
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   492
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   493
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   494
static const Define *find_macro_arg(const IncludeState *state,
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   495
                                    const Define *defines)
869
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   496
{
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   497
    const Define *def = NULL;
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   498
    char *sym = (char *) alloca(state->tokenlen + 1);
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   499
    memcpy(sym, state->token, state->tokenlen);
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   500
    sym[state->tokenlen] = '\0';
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   501
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   502
    for (def = defines; def != NULL; def = def->next)
869
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   503
    {
873
bdffabea8e40 Macro args in macro args need to be replaced inline.
Ryan C. Gordon <icculus@icculus.org>
parents: 871
diff changeset
   504
        assert(def->parameters == NULL);  // args can't have args!
869
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   505
        assert(def->paramcount == 0);  // args can't have args!
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   506
        if (strcmp(def->identifier, sym) == 0)
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   507
            break;
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   508
    } // while
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   509
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   510
    return def;
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   511
} // find_macro_arg
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   512
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   513
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   514
static void put_all_defines(Context *ctx)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   515
{
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 755
diff changeset
   516
    size_t i;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   517
    for (i = 0; i < STATICARRAYLEN(ctx->define_hashtable); i++)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   518
    {
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   519
        Define *bucket = ctx->define_hashtable[i];
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   520
        ctx->define_hashtable[i] = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   521
        while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   522
        {
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   523
            Define *next = bucket->next;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   524
            free_define(ctx, bucket);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   525
            bucket = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   526
        } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   527
    } // for
675
e85587e4650d Fixing some comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 674
diff changeset
   528
} // put_all_defines
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   529
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   531
static int push_source(Context *ctx, const char *fname, const char *source,
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   532
                       unsigned int srclen, unsigned int linenum,
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   533
                       MOJOSHADER_includeClose close_callback)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   534
{
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   535
    IncludeState *state = get_include(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   536
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   537
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   538
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   539
    if (fname != NULL)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   540
    {
858
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   541
        state->filename = stringcache(ctx->filename_cache, fname);
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   542
        if (state->filename == NULL)
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   543
        {
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   544
            put_include(ctx, state);
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   545
            return 0;
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   546
        } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   547
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   548
1121
4142681f9fda Allow preprocessor to pass through comments, like GNU cpp does.
Ryan C. Gordon <icculus@icculus.org>
parents: 1120
diff changeset
   549
    #if !MATCH_MICROSOFT_PREPROCESSOR
4142681f9fda Allow preprocessor to pass through comments, like GNU cpp does.
Ryan C. Gordon <icculus@icculus.org>
parents: 1120
diff changeset
   550
    state->report_comments = 1;
4142681f9fda Allow preprocessor to pass through comments, like GNU cpp does.
Ryan C. Gordon <icculus@icculus.org>
parents: 1120
diff changeset
   551
    #endif
4142681f9fda Allow preprocessor to pass through comments, like GNU cpp does.
Ryan C. Gordon <icculus@icculus.org>
parents: 1120
diff changeset
   552
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   553
    state->close_callback = close_callback;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   554
    state->source_base = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   555
    state->source = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   556
    state->token = source;
679
3892ebde7d99 Fixed lexer to only accept preprocessor directives at start of a line.
Ryan C. Gordon <icculus@icculus.org>
parents: 678
diff changeset
   557
    state->tokenval = ((Token) '\n');
642
624ab8696f9b Enormous amount of tapdancing to handle EOI better in the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 641
diff changeset
   558
    state->orig_length = srclen;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   559
    state->bytes_left = srclen;
640
813a139a4a5a push_source() now specifies a line number.
Ryan C. Gordon <icculus@icculus.org>
parents: 639
diff changeset
   560
    state->line = linenum;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   561
    state->next = ctx->include_stack;
690
4710df464f13 Moved asm comment processing into the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 689
diff changeset
   562
    state->asm_comments = ctx->asm_comments;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   563
723
6d58b504cc6e Print out current source/line number when debugging any parser/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 701
diff changeset
   564
    print_debug_lexing_position(state);
6d58b504cc6e Print out current source/line number when debugging any parser/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 701
diff changeset
   565
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   566
    ctx->include_stack = state;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   568
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   569
} // push_source
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   570
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   571
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
static void pop_source(Context *ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   573
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   574
    IncludeState *state = ctx->include_stack;
913
483458775ec5 Fixed crash when pushing an empty string on the include_stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 910
diff changeset
   575
    assert(state != NULL);  // more pops than pushes!
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   576
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   577
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   578
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   579
    if (state->close_callback)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   580
    {
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   581
        state->close_callback(state->source_base, ctx->malloc,
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   582
                              ctx->free, ctx->malloc_data);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   583
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   584
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   585
    // state->filename is a pointer to the filename cache; don't free it here!
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   586
677
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   587
    Conditional *cond = state->conditional_stack;
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   588
    while (cond)
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   589
    {
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   590
        Conditional *next = cond->next;
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   591
        put_conditional(ctx, cond);
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   592
        cond = next;
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   593
    } // while
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   594
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   595
    ctx->include_stack = state->next;
723
6d58b504cc6e Print out current source/line number when debugging any parser/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 701
diff changeset
   596
6d58b504cc6e Print out current source/line number when debugging any parser/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 701
diff changeset
   597
    print_debug_lexing_position(ctx->include_stack);
6d58b504cc6e Print out current source/line number when debugging any parser/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 701
diff changeset
   598
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   599
    put_include(ctx, state);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   600
} // pop_source
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   601
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   602
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   603
static void close_define_include(const char *data, MOJOSHADER_malloc m,
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   604
                                 MOJOSHADER_free f, void *d)
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   605
{
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   606
    f((void *) data, d);
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   607
} // close_define_include
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   608
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   609
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   610
Preprocessor *preprocessor_start(const char *fname, const char *source,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   611
                            unsigned int sourcelen,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   612
                            MOJOSHADER_includeOpen open_callback,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   613
                            MOJOSHADER_includeClose close_callback,
658
22695d3d6b98 Should be an array of structs, not an array of pointers to structs.
Ryan C. Gordon <icculus@icculus.org>
parents: 657
diff changeset
   614
                            const MOJOSHADER_preprocessorDefine *defines,
690
4710df464f13 Moved asm comment processing into the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 689
diff changeset
   615
                            unsigned int define_count, int asm_comments,
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   616
                            MOJOSHADER_malloc m, MOJOSHADER_free f, void *d)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   618
    int okay = 1;
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 755
diff changeset
   619
    unsigned int i = 0;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
    // the preprocessor is internal-only, so we verify all these are != NULL.
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
    assert(m != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   623
    assert(f != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
    Context *ctx = (Context *) m(sizeof (Context), d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
    if (ctx == NULL)
858
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   627
        return NULL;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
    memset(ctx, '\0', sizeof (Context));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
    ctx->malloc = m;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
    ctx->free = f;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
    ctx->malloc_data = d;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
    ctx->open_callback = open_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   634
    ctx->close_callback = close_callback;
690
4710df464f13 Moved asm comment processing into the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 689
diff changeset
   635
    ctx->asm_comments = asm_comments;
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   636
949
356f04114580 Hook up preprocessor string cache to MallocBridge().
Ryan C. Gordon <icculus@icculus.org>
parents: 945
diff changeset
   637
    ctx->filename_cache = stringcache_create(MallocBridge, FreeBridge, ctx);
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   638
    okay = ((okay) && (ctx->filename_cache != NULL));
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   639
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   640
    ctx->file_macro = get_define(ctx);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   641
    okay = ((okay) && (ctx->file_macro != NULL));
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   642
    if ((okay) && (ctx->file_macro))
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   643
        okay = ((ctx->file_macro->identifier = StrDup(ctx, "__FILE__")) != 0);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   644
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   645
    ctx->line_macro = get_define(ctx);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   646
    okay = ((okay) && (ctx->line_macro != NULL));
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   647
    if ((okay) && (ctx->line_macro))
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   648
        okay = ((ctx->line_macro->identifier = StrDup(ctx, "__LINE__")) != 0);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   649
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   650
    // let the usual preprocessor parser sort these out.
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   651
    char *define_include = NULL;
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   652
    unsigned int define_include_len = 0;
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   653
    if ((okay) && (define_count > 0))
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   654
    {
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   655
        Buffer *predefbuf = buffer_create(256, MallocBridge, FreeBridge, ctx);
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   656
        okay = okay && (predefbuf != NULL);
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   657
        for (i = 0; okay && (i < define_count); i++)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   658
        {
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   659
            okay = okay && buffer_append_fmt(predefbuf, "#define %s %s\n",
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   660
                                 defines[i].identifier, defines[i].definition);
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   661
        } // for
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   662
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   663
        define_include_len = buffer_size(predefbuf);
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   664
        if (define_include_len > 0)
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   665
        {
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   666
            define_include = buffer_flatten(predefbuf);
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   667
            okay = okay && (define_include != NULL);
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   668
        } // if
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   669
        buffer_destroy(predefbuf);
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   670
    } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   671
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   672
    if ((okay) && (!push_source(ctx,fname,source,sourcelen,1,NULL)))
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   673
        okay = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   674
950
dcbf30c07fc9 Preprocessor: Don't push predefined macro null terminator to the include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 949
diff changeset
   675
    if ((okay) && (define_include_len > 0))
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   676
    {
950
dcbf30c07fc9 Preprocessor: Don't push predefined macro null terminator to the include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 949
diff changeset
   677
        assert(define_include != NULL);
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   678
        okay = push_source(ctx, "<predefined macros>", define_include,
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   679
                           define_include_len, 1, close_define_include);
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   680
    } // if
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   681
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   682
    if (!okay)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   683
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   684
        preprocessor_end((Preprocessor *) ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   685
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   686
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   687
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   688
    return (Preprocessor *) ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   689
} // preprocessor_start
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   690
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   691
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   692
void preprocessor_end(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   693
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   694
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   695
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   696
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   697
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   698
    while (ctx->include_stack != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   699
        pop_source(ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   700
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   701
    put_all_defines(ctx);
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   702
858
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   703
    if (ctx->filename_cache != NULL)
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   704
        stringcache_destroy(ctx->filename_cache);
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   705
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   706
    free_define(ctx, ctx->file_macro);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   707
    free_define(ctx, ctx->line_macro);
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   708
    free_define_pool(ctx);
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   709
    free_conditional_pool(ctx);
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   710
    free_include_pool(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   711
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   712
    Free(ctx, ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   713
} // preprocessor_end
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   714
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   715
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   716
int preprocessor_outofmemory(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   717
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   718
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   719
    return ctx->out_of_memory;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   720
} // preprocessor_outofmemory
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   721
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   722
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   723
static inline void pushback(IncludeState *state)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   724
{
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   725
    #if DEBUG_PREPROCESSOR
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   726
    printf("PREPROCESSOR PUSHBACK\n");
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   727
    #endif
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   728
    assert(!state->pushedback);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   729
    state->pushedback = 1;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   730
} // pushback
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   731
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   732
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   733
static Token lexer(IncludeState *state)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   734
{
1120
f655ea9c8ecd Let the preprocessor work more like C, without the Microsoft tools' quirks.
Ryan C. Gordon <icculus@icculus.org>
parents: 1060
diff changeset
   735
    #if !MATCH_MICROSOFT_PREPROCESSOR
f655ea9c8ecd Let the preprocessor work more like C, without the Microsoft tools' quirks.
Ryan C. Gordon <icculus@icculus.org>
parents: 1060
diff changeset
   736
    state->report_whitespace = 1;
f655ea9c8ecd Let the preprocessor work more like C, without the Microsoft tools' quirks.
Ryan C. Gordon <icculus@icculus.org>
parents: 1060
diff changeset
   737
    #endif
f655ea9c8ecd Let the preprocessor work more like C, without the Microsoft tools' quirks.
Ryan C. Gordon <icculus@icculus.org>
parents: 1060
diff changeset
   738
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   739
    if (!state->pushedback)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   740
        return preprocessor_lexer(state);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   741
    state->pushedback = 0;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   742
    return state->tokenval;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   743
} // lexer
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   744
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   745
638
e910619c61f4 Added a FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 637
diff changeset
   746
// !!! FIXME: parsing fails on preprocessor directives should skip rest of line.
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   747
static int require_newline(IncludeState *state)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   748
{
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   749
    const Token token = lexer(state);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   750
    pushback(state);  // rewind no matter what.
654
9210bd7eb2e2 Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 652
diff changeset
   751
    return ( (token == TOKEN_INCOMPLETE_COMMENT) || // call it an eol.
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   752
             (token == ((Token) '\n')) || (token == TOKEN_EOI) );
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   753
} // require_newline
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   754
940
bc2a5efade5e Added a bunch of FIXMEs to accurately portray current technical debt.
Ryan C. Gordon <icculus@icculus.org>
parents: 939
diff changeset
   755
// !!! FIXME: didn't we implement this by hand elsewhere?
682
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   756
static int token_to_int(IncludeState *state)
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   757
{
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   758
    assert(state->tokenval == TOKEN_INT_LITERAL);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   759
    char *buf = (char *) alloca(state->tokenlen+1);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   760
    memcpy(buf, state->token, state->tokenlen);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   761
    buf[state->tokenlen] = '\0';
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   762
    return atoi(buf);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   763
} // token_to_int
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   764
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   765
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   766
static void handle_pp_include(Context *ctx)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   767
{
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   768
    IncludeState *state = ctx->include_stack;
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   769
    Token token = lexer(state);
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   770
    MOJOSHADER_includeType incltype;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   771
    char *filename = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   772
    int bogus = 0;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   773
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   774
    if (token == TOKEN_STRING_LITERAL)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   775
        incltype = MOJOSHADER_INCLUDETYPE_LOCAL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   776
    else if (token == ((Token) '<'))
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   777
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   778
        incltype = MOJOSHADER_INCLUDETYPE_SYSTEM;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   779
        // can't use lexer, since every byte between the < > pair is
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   780
        //  considered part of the filename.  :/
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   781
        while (!bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   782
        {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   783
            if ( !(bogus = (state->bytes_left == 0)) )
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   784
            {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   785
                const char ch = *state->source;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   786
                if ( !(bogus = ((ch == '\r') || (ch == '\n'))) )
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   787
                {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   788
                    state->source++;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   789
                    state->bytes_left--;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   790
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   791
                    if (ch == '>')
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   792
                        break;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   793
                } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   794
            } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   795
        } // while
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   796
    } // else if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   797
    else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   798
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   799
        bogus = 1;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   800
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   801
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   802
    if (!bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   803
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   804
        state->token++;  // skip '<' or '\"'...
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   805
        const unsigned int len = ((unsigned int) (state->source-state->token));
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   806
        filename = (char *) alloca(len);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   807
        memcpy(filename, state->token, len-1);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   808
        filename[len-1] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   809
        bogus = !require_newline(state);
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   810
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   811
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   812
    if (bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   813
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   814
        fail(ctx, "Invalid #include directive");
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   815
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   816
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   817
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   818
    const char *newdata = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   819
    unsigned int newbytes = 0;
813
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   820
    if ((ctx->open_callback == NULL) || (ctx->close_callback == NULL))
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   821
    {
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   822
        fail(ctx, "Saw #include, but no include callbacks defined");
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   823
        return;
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   824
    } // if
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   825
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   826
    if (!ctx->open_callback(incltype, filename, state->source_base,
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   827
                            &newdata, &newbytes, ctx->malloc,
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   828
                            ctx->free, ctx->malloc_data))
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   829
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   830
        fail(ctx, "Include callback failed");  // !!! FIXME: better error
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   831
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   832
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   833
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   834
    MOJOSHADER_includeClose callback = ctx->close_callback;
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   835
    if (!push_source(ctx, filename, newdata, newbytes, 1, callback))
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   836
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   837
        assert(ctx->out_of_memory);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   838
        ctx->close_callback(newdata, ctx->malloc, ctx->free, ctx->malloc_data);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   839
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   840
} // handle_pp_include
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   841
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   842
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   843
static void handle_pp_line(Context *ctx)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   844
{
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   845
    IncludeState *state = ctx->include_stack;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   846
    char *filename = NULL;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   847
    int linenum = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   848
    int bogus = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   849
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   850
    if (lexer(state) != TOKEN_INT_LITERAL)
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   851
        bogus = 1;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   852
    else
682
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   853
        linenum = token_to_int(state);
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   854
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   855
    if (!bogus)
871
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   856
    {
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   857
        Token t = lexer(state);
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   858
        if (t == ((Token) '\n'))
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   859
        {
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   860
            state->line = linenum;
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   861
            return;
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   862
        }
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   863
        bogus = (t != TOKEN_STRING_LITERAL);
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   864
    }
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   865
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   866
    if (!bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   867
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   868
        state->token++;  // skip '\"'...
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   869
        filename = (char *) alloca(state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   870
        memcpy(filename, state->token, state->tokenlen-1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   871
        filename[state->tokenlen-1] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   872
        bogus = !require_newline(state);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   873
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   874
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   875
    if (bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   876
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   877
        fail(ctx, "Invalid #line directive");
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   878
        return;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   879
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   880
858
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   881
    const char *cached = stringcache(ctx->filename_cache, filename);
949
356f04114580 Hook up preprocessor string cache to MallocBridge().
Ryan C. Gordon <icculus@icculus.org>
parents: 945
diff changeset
   882
    state->filename = cached;  // may be NULL if stringcache() failed.
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   883
    state->line = linenum;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   884
} // handle_pp_line
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   885
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   886
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   887
static void handle_pp_error(Context *ctx)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   888
{
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   889
    IncludeState *state = ctx->include_stack;
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   890
    char *ptr = ctx->failstr;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   891
    int avail = sizeof (ctx->failstr) - 1;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   892
    int cpy = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   893
    int done = 0;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   894
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   895
    const char *prefix = "#error";
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   896
    const size_t prefixlen = strlen(prefix);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   897
    strcpy(ctx->failstr, prefix);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   898
    avail -= prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   899
    ptr += prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   900
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   901
    state->report_whitespace = 1;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   902
    while (!done)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   903
    {
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   904
        const Token token = lexer(state);
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   905
        switch (token)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   906
        {
615
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   907
            case ((Token) '\n'):
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   908
                state->line--;  // make sure error is on the right line.
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   909
                // fall through!
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   910
            case TOKEN_INCOMPLETE_COMMENT:
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   911
            case TOKEN_EOI:
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   912
                pushback(state);  // move back so we catch this later.
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   913
                done = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   914
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   915
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   916
            case ((Token) ' '):
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   917
                if (!avail)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   918
                    break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   919
                *(ptr++) = ' ';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   920
                avail--;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   921
                break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   922
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   923
            default:
650
9c91067da49d Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 649
diff changeset
   924
                cpy = Min(avail, (int) state->tokenlen);
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   925
                if (cpy)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   926
                    memcpy(ptr, state->token, cpy);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   927
                ptr += cpy;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   928
                avail -= cpy;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   929
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   930
        } // switch
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   931
    } // while
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   932
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   933
    *ptr = '\0';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   934
    state->report_whitespace = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   935
    ctx->isfail = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   936
} // handle_pp_error
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   937
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   938
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   939
static void handle_pp_define(Context *ctx)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   940
{
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   941
    IncludeState *state = ctx->include_stack;
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 755
diff changeset
   942
    int done = 0;
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   943
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   944
    if (lexer(state) != TOKEN_IDENTIFIER)
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   945
    {
754
d405cfa22392 Fixed typo.
Ryan C. Gordon <icculus@icculus.org>
parents: 748
diff changeset
   946
        fail(ctx, "Macro names must be identifiers");
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   947
        return;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   948
    } // if
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   949
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   950
    char *definition = NULL;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   951
    char *sym = (char *) Malloc(ctx, state->tokenlen+1);
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   952
    if (sym == NULL)
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   953
        return;
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   954
    memcpy(sym, state->token, state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   955
    sym[state->tokenlen] = '\0';
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   956
699
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   957
    if (strcmp(sym, "defined") == 0)
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   958
    {
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   959
        Free(ctx, sym);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   960
        fail(ctx, "'defined' cannot be used as a macro name");
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   961
        return;
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   962
    } // if
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   963
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   964
    // Don't treat these symbols as special anymore if they get (re)#defined.
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   965
    if (strcmp(sym, "__FILE__") == 0)
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   966
    {
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   967
        if (ctx->file_macro)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   968
        {
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   969
            failf(ctx, "'%s' already defined", sym); // !!! FIXME: warning?
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   970
            free_define(ctx, ctx->file_macro);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   971
            ctx->file_macro = NULL;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   972
        } // if
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   973
    } // if
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   974
    else if (strcmp(sym, "__LINE__") == 0)
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   975
    {
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   976
        if (ctx->line_macro)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   977
        {
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   978
            failf(ctx, "'%s' already defined", sym); // !!! FIXME: warning?
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   979
            free_define(ctx, ctx->line_macro);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   980
            ctx->line_macro = NULL;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   981
        } // if
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   982
    } // else if
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   983
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   984
    // #define a(b) is different than #define a (b)    :(
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   985
    state->report_whitespace = 1;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   986
    lexer(state);
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   987
    state->report_whitespace = 0;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   988
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
   989
    int params = 0;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   990
    char **idents = NULL;
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 755
diff changeset
   991
    static const char space = ' ';
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   992
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   993
    if (state->tokenval == ((Token) ' '))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   994
        lexer(state);  // skip it.
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   995
    else if (state->tokenval == ((Token) '('))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   996
    {
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   997
        IncludeState saved;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   998
        memcpy(&saved, state, sizeof (IncludeState));
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   999
        while (1)
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1000
        {
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1001
            if (lexer(state) != TOKEN_IDENTIFIER)
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1002
                break;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1003
            params++;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1004
            if (lexer(state) != ((Token) ','))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1005
                break;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1006
        } // while
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1007
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1008
        if (state->tokenval != ((Token) ')'))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1009
        {
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1010
            fail(ctx, "syntax error in macro parameter list");
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1011
            goto handle_pp_define_failed;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1012
        } // if
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1013
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1014
        if (params == 0)  // special case for void args: "#define a() b"
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1015
            params = -1;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1016
        else
748
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1017
        {
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1018
            idents = (char **) Malloc(ctx, sizeof (char *) * params);
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1019
            if (idents == NULL)
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1020
                goto handle_pp_define_failed;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1021
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1022
            // roll all the way back, do it again.
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1023
            memcpy(state, &saved, sizeof (IncludeState));
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1024
            memset(idents, '\0', sizeof (char *) * params);
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1025
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1026
            int i;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1027
            for (i = 0; i < params; i++)
748
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1028
            {
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1029
                lexer(state);
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1030
                assert(state->tokenval == TOKEN_IDENTIFIER);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1031
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1032
                char *dst = (char *) Malloc(ctx, state->tokenlen+1);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1033
                if (dst == NULL)
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1034
                    break;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1035
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1036
                memcpy(dst, state->token, state->tokenlen);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1037
                dst[state->tokenlen] = '\0';
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1038
                idents[i] = dst;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1039
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1040
                if (i < (params-1))
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1041
                {
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1042
                    lexer(state);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1043
                    assert(state->tokenval == ((Token) ','));
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1044
                } // if
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1045
            } // for
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1046
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1047
            if (i != params)
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1048
            {
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1049
                assert(ctx->out_of_memory);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1050
                goto handle_pp_define_failed;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1051
            } // if
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1052
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1053
            lexer(state);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1054
            assert(state->tokenval == ((Token) ')'));
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1055
        } // else
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1056
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1057
        lexer(state);
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1058
    } // else if
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1059
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1060
    pushback(state);
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1061
944
9f9fa9650772 Paying off more technical debt: unified growable buffers into one place.
Ryan C. Gordon <icculus@icculus.org>
parents: 941
diff changeset
  1062
    Buffer *buffer = buffer_create(128, MallocBridge, FreeBridge, ctx);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1063
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1064
    state->report_whitespace = 1;
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1065
    while ((!done) && (!ctx->out_of_memory))
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1066
    {
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
  1067
        const Token token = lexer(state);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1068
        switch (token)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1069
        {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1070
            case TOKEN_INCOMPLETE_COMMENT:
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1071
            case TOKEN_EOI:
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
  1072
                pushback(state);  // move back so we catch this later.
864
aa3bec973a21 Check for "##" at the start and end of macro definitions.
Ryan C. Gordon <icculus@icculus.org>
parents: 861
diff changeset
  1073
                done = 1;
aa3bec973a21 Check for "##" at the start and end of macro definitions.
Ryan C. Gordon <icculus@icculus.org>
parents: 861
diff changeset
  1074
                break;
aa3bec973a21 Check for "##" at the start and end of macro definitions.
Ryan C. Gordon <icculus@icculus.org>
parents: 861
diff changeset
  1075
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1076
            case ((Token) '\n'):
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1077
                done = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1078
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1079
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1080
            case ((Token) ' '):  // may not actually point to ' '.
944
9f9fa9650772 Paying off more technical debt: unified growable buffers into one place.
Ryan C. Gordon <icculus@icculus.org>
parents: 941
diff changeset
  1081
                assert(buffer_size(buffer) > 0);
9f9fa9650772 Paying off more technical debt: unified growable buffers into one place.
Ryan C. Gordon <icculus@icculus.org>
parents: 941
diff changeset
  1082
                buffer_append(buffer, &space, 1);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1083
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1084
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1085
            default:
944
9f9fa9650772 Paying off more technical debt: unified growable buffers into one place.
Ryan C. Gordon <icculus@icculus.org>
parents: 941
diff changeset
  1086
                buffer_append(buffer, state->token, state->tokenlen);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1087
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1088
        } // switch
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: