mojoshader_preprocessor.c
author Ryan C. Gordon <icculus@icculus.org>
Fri, 04 May 2018 17:45:20 -0400
changeset 1182 179ffe99c57f
parent 1142 7b554e065321
child 1188 25000edc0176
permissions -rw-r--r--
Always return a non-NULL pointer for malloc(0). Some C runtimes, like musl, will return NULL in this case. It's more convenient to not get a NULL (which is meant to be interpreted as a failure), but instead get a non-NULL pointer that can't be dereferenced (because it's a pointer to zero bytes of memory).
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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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// 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 char zeromalloc = 0;
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static inline void *Malloc(Context *ctx, const size_t len)
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{
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    void *retval = (len == 0) ? &zeromalloc : 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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    if ((ptr != &zeromalloc) && (ptr != NULL))
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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);
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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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   183
        #undef TOKENCASE
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   184
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   185
        case ((Token) '\n'):
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   186
            printf("'\\n'");
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   187
            break;
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   188
629
d886403c6609 Better debug token output.
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   189
        case ((Token) '\\'):
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   190
            printf("'\\\\'");
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   191
            break;
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   192
587
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   193
        default:
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   194
            assert(((int)tokenval) < 256);
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   195
            printf("'%c'", (char) tokenval);
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   196
            break;
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   197
    } // switch
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   198
    printf(")\n");
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   199
} // MOJOSHADER_print_debug_token
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   200
#endif
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   201
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   202
611
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   204
#if !MOJOSHADER_FORCE_INCLUDE_CALLBACKS
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   206
// !!! FIXME: most of these _MSC_VER should probably be _WINDOWS?
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   207
#ifdef _MSC_VER
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   208
#define WIN32_LEAN_AND_MEAN 1
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   209
#include <windows.h>  // GL headers need this for WINGDIAPI definition.
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   210
#else
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   211
#include <sys/stat.h>
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   212
#include <fcntl.h>
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   213
#include <unistd.h>
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   214
#endif
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   216
int MOJOSHADER_internal_include_open(MOJOSHADER_includeType inctype,
8c2ee1a97ee1 Implemented #include in the preprocessor.
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   217
                                     const char *fname, const char *parent,
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   218
                                     const char **outdata,
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   219
                                     unsigned int *outbytes,
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   220
                                     MOJOSHADER_malloc m, MOJOSHADER_free f,
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   221
                                     void *d)
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   222
{
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   223
#ifdef _MSC_VER
882
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   224
    WCHAR wpath[MAX_PATH];
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   225
    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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   226
        return 0;
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   227
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   228
    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
   229
    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
   230
                                      NULL, OPEN_EXISTING, NULL, NULL);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   231
    if (handle == INVALID_HANDLE_VALUE)
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   232
        return 0;
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   233
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   234
    const DWORD fileSize = GetFileSize(handle, NULL);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   235
    if (fileSize == INVALID_FILE_SIZE)
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   236
    {
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   237
        CloseHandle(handle);
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   238
        return 0;
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diff changeset
   239
    } // if
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   240
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   241
    char *data = (char *) m(fileSize, d);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   242
    if (data == NULL)
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   243
    {
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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   244
        CloseHandle(handle);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   245
        return 0;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   246
    } // if
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
    DWORD readLength = 0;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   249
    if (!ReadFile(handle, data, fileSize, &readLength, NULL))
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   250
    {
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   251
        CloseHandle(handle);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   252
        f(data, d);
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   253
        return 0;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   254
    } // if
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   255
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   256
    CloseHandle(handle);
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diff changeset
   257
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diff changeset
   258
    if (readLength != fileSize)
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   259
    {
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   260
        f(data, d);
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diff changeset
   261
        return 0;
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diff changeset
   262
    } // if
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diff changeset
   263
    *outdata = data;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   264
    *outbytes = fileSize;
dd526bab5a51 Did some Ryanification of Aras's Windows #include handling code.
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diff changeset
   265
    return 1;
611
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diff changeset
   266
#else
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diff changeset
   267
    struct stat statbuf;
8c2ee1a97ee1 Implemented #include in the preprocessor.
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diff changeset
   268
    if (stat(fname, &statbuf) == -1)
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diff changeset
   269
        return 0;
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diff changeset
   270
    char *data = (char *) m(statbuf.st_size, d);
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diff changeset
   271
    if (data == NULL)
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diff changeset
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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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   283
        return 0;
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   284
    } // if
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   285
    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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// !!! 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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   309
        while (item != NULL) { \
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            type *next = item->next; \
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   311
            Free(ctx, item); \
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            item = next; \
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   313
        } \
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    }
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646
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#define GET_POOL(type, poolname) \
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    static type *get_##poolname(Context *ctx) { \
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        type *retval = ctx->poolname##_pool; \
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   319
        if (retval != NULL) \
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   320
            ctx->poolname##_pool = retval->next; \
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   321
        else \
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            retval = (type *) Malloc(ctx, sizeof (type)); \
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   323
        if (retval != NULL) \
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   324
            memset(retval, '\0', sizeof (type)); \
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   325
        return retval; \
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   326
    }
620
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646
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#define PUT_POOL(type, poolname) \
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   329
    static void put_##poolname(Context *ctx, type *item) { \
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   330
        item->next = ctx->poolname##_pool; \
672
bcca8b3ae152 Fixed memory pool code.
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   331
        ctx->poolname##_pool = item; \
646
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    }
620
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   333
646
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#define IMPLEMENT_POOL(type, poolname) \
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   335
    FREE_POOL(type, poolname) \
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   336
    GET_POOL(type, poolname) \
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   337
    PUT_POOL(type, poolname)
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   338
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   339
IMPLEMENT_POOL(Conditional, conditional)
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   340
IMPLEMENT_POOL(IncludeState, include)
676
29447167fc68 Renamed DefineHash to Define.
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   341
IMPLEMENT_POOL(Define, define)
620
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   342
611
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   343
555
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// Preprocessor define hashtable stuff...
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   345
841
05fa7ce0a202 Added a FIXME.
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   346
// !!! FIXME: why isn't this using mojoshader_common.c's code?
05fa7ce0a202 Added a FIXME.
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   347
729
92cc053fbf75 Put in a much better string hashing algorithm.
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   348
// this is djb's xor hashing function.
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   349
static inline uint32 hash_string_djbxor(const char *sym)
555
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   350
{
729
92cc053fbf75 Put in a much better string hashing algorithm.
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   351
    register uint32 hash = 5381;
622
59b3003f6494 Fixed logic bug in string loop.
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diff changeset
   352
    while (*sym)
729
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   353
        hash = ((hash << 5) + hash) ^ *(sym++);
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   354
    return hash;
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   355
} // hash_string_djbxor
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diff changeset
   356
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   357
static inline uint8 hash_define(const char *sym)
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diff changeset
   358
{
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   359
    return (uint8) hash_string_djbxor(sym);
555
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diff changeset
   360
} // hash_define
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   361
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diff changeset
   362
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
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   363
static int add_define(Context *ctx, const char *sym, const char *val,
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
   364
                      char **parameters, int paramcount)
555
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parents:
diff changeset
   365
{
729
92cc053fbf75 Put in a much better string hashing algorithm.
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diff changeset
   366
    const uint8 hash = hash_define(sym);
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   367
    Define *bucket = ctx->define_hashtable[hash];
555
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parents:
diff changeset
   368
    while (bucket)
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parents:
diff changeset
   369
    {
655
0b82fdeebf86 Changed DefineHash definition.
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diff changeset
   370
        if (strcmp(bucket->identifier, sym) == 0)
555
940821555fda Initial work on preprocessor. Not yet complete!
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parents:
diff changeset
   371
        {
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   372
            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
   373
            // !!! FIXME: gcc reports the location of previous #define here.
555
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diff changeset
   374
            return 0;
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parents:
diff changeset
   375
        } // if
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parents:
diff changeset
   376
        bucket = bucket->next;
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parents:
diff changeset
   377
    } // while
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diff changeset
   378
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
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diff changeset
   379
    bucket = get_define(ctx);
555
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   380
    if (bucket == NULL)
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parents:
diff changeset
   381
        return 0;
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diff changeset
   382
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
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diff changeset
   383
    bucket->definition = val;
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   384
    bucket->original = NULL;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   385
    bucket->identifier = sym;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   386
    bucket->parameters = (const char **) parameters;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   387
    bucket->paramcount = paramcount;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   388
    bucket->next = ctx->define_hashtable[hash];
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   389
    ctx->define_hashtable[hash] = bucket;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   390
    return 1;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   391
} // add_define
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parents:
diff changeset
   392
940821555fda Initial work on preprocessor. Not yet complete!
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parents:
diff changeset
   393
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
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parents: 677
diff changeset
   394
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
   395
{
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   396
    if (def != NULL)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   397
    {
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   398
        int i;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   399
        for (i = 0; i < def->paramcount; i++)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   400
            Free(ctx, (void *) def->parameters[i]);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   401
        Free(ctx, (void *) def->parameters);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   402
        Free(ctx, (void *) def->identifier);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   403
        Free(ctx, (void *) def->definition);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   404
        Free(ctx, (void *) def->original);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   405
        put_define(ctx, def);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   406
    } // if
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   407
} // free_define
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   408
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   409
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   410
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
   411
{
729
92cc053fbf75 Put in a much better string hashing algorithm.
Ryan C. Gordon <icculus@icculus.org>
parents: 727
diff changeset
   412
    const uint8 hash = hash_define(sym);
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   413
    Define *bucket = ctx->define_hashtable[hash];
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   414
    Define *prev = NULL;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   416
    {
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   417
        if (strcmp(bucket->identifier, sym) == 0)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   418
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   419
            if (prev == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   420
                ctx->define_hashtable[hash] = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   421
            else
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   422
                prev->next = bucket->next;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   423
            free_define(ctx, bucket);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   424
            return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   425
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   426
        prev = bucket;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   427
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   428
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   429
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   430
    return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   431
} // remove_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   432
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   433
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   434
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
   435
{
1128
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   436
    const uint8 hash = hash_define(sym);
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   437
    Define *bucket = ctx->define_hashtable[hash];
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   438
    while (bucket)
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   439
    {
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   440
        if (strcmp(bucket->identifier, sym) == 0)
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   441
            return bucket;
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   442
        bucket = bucket->next;
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   443
    } // while
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   444
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   445
    const uint8 filestrhash = 67;
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   446
    assert(hash_define("__FILE__") == filestrhash);
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   447
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   448
    const uint8 linestrhash = 75;
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   449
    assert(hash_define("__LINE__") == linestrhash);
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   450
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   451
    if ( (hash == filestrhash) && (ctx->file_macro) && (strcmp(sym, "__FILE__") == 0) )
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   452
    {
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   453
        Free(ctx, (char *) ctx->file_macro->definition);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   454
        const IncludeState *state = ctx->include_stack;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   455
        const char *fname = state ? state->filename : "";
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   456
        const size_t len = strlen(fname) + 2;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   457
        char *str = (char *) Malloc(ctx, len);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   458
        if (!str)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   459
            return NULL;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   460
        str[0] = '\"';
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   461
        memcpy(str + 1, fname, len - 2);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   462
        str[len - 1] = '\"';
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   463
        ctx->file_macro->definition = str;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   464
        return ctx->file_macro;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   465
    } // if
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   466
1128
a66416e507d1 Optimizations to preprocessor's find_define().
Ryan C. Gordon <icculus@icculus.org>
parents: 1126
diff changeset
   467
    else if ( (hash == linestrhash) && (ctx->line_macro) && (strcmp(sym, "__LINE__") == 0) )
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   468
    {
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   469
        Free(ctx, (char *) ctx->line_macro->definition);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   470
        const IncludeState *state = ctx->include_stack;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   471
        const size_t bufsize = 32;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   472
        char *str = (char *) Malloc(ctx, bufsize);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   473
        if (!str)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   474
            return 0;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   475
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   476
        const size_t len = snprintf(str, bufsize, "%u", state->line);
1129
908551a4334c Fixed compiler warning.
Ryan C. Gordon <icculus@icculus.org>
parents: 1128
diff changeset
   477
        assert(len < bufsize); (void) len;
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   478
        ctx->line_macro->definition = str;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   479
        return ctx->line_macro;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   480
    } // else
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   481
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
    return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
} // find_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   484
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
699
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   486
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
   487
{
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   488
    IncludeState *state = ctx->include_stack;
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   489
    assert(state->tokenval == TOKEN_IDENTIFIER);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   490
    char *sym = (char *) alloca(state->tokenlen+1);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   491
    memcpy(sym, state->token, state->tokenlen);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   492
    sym[state->tokenlen] = '\0';
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   493
    return find_define(ctx, sym);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   494
} // find_define_by_token
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   495
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   496
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   497
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
   498
                                    const Define *defines)
869
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   499
{
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   500
    const Define *def = NULL;
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   501
    char *sym = (char *) alloca(state->tokenlen + 1);
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   502
    memcpy(sym, state->token, state->tokenlen);
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   503
    sym[state->tokenlen] = '\0';
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   504
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   505
    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
   506
    {
873
bdffabea8e40 Macro args in macro args need to be replaced inline.
Ryan C. Gordon <icculus@icculus.org>
parents: 871
diff changeset
   507
        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
   508
        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
   509
        if (strcmp(def->identifier, sym) == 0)
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   510
            break;
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   511
    } // while
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
    return def;
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   514
} // find_macro_arg
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   515
5bd359b047f3 Added concat operator ("##") to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 867
diff changeset
   516
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   517
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
   518
{
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
   519
    size_t i;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   520
    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
   521
    {
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   522
        Define *bucket = ctx->define_hashtable[i];
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   523
        ctx->define_hashtable[i] = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   524
        while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   525
        {
676
29447167fc68 Renamed DefineHash to Define.
Ryan C. Gordon <icculus@icculus.org>
parents: 675
diff changeset
   526
            Define *next = bucket->next;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   527
            free_define(ctx, bucket);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   528
            bucket = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   529
        } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
    } // for
675
e85587e4650d Fixing some comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 674
diff changeset
   531
} // put_all_defines
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   532
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   533
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   534
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
   535
                       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
   536
                       MOJOSHADER_includeClose close_callback)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   537
{
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   538
    IncludeState *state = get_include(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   539
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   540
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   541
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   542
    if (fname != NULL)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   543
    {
858
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   544
        state->filename = stringcache(ctx->filename_cache, fname);
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   545
        if (state->filename == NULL)
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   546
        {
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   547
            put_include(ctx, state);
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   548
            return 0;
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   549
        } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   550
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   552
    state->close_callback = close_callback;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   553
    state->source_base = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   554
    state->source = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   555
    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
   556
    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
   557
    state->orig_length = srclen;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   558
    state->bytes_left = srclen;
640
813a139a4a5a push_source() now specifies a line number.
Ryan C. Gordon <icculus@icculus.org>
parents: 639
diff changeset
   559
    state->line = linenum;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   560
    state->next = ctx->include_stack;
690
4710df464f13 Moved asm comment processing into the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 689
diff changeset
   561
    state->asm_comments = ctx->asm_comments;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   562
723
6d58b504cc6e Print out current source/line number when debugging any parser/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 701
diff changeset
   563
    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
   564
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   565
    ctx->include_stack = state;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   566
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   568
} // push_source
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   569
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
static void pop_source(Context *ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   573
    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
   574
    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
   575
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   576
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   577
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   578
    if (state->close_callback)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   579
    {
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   580
        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
   581
                              ctx->free, ctx->malloc_data);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   582
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   583
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   584
    // 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
   585
677
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   586
    Conditional *cond = state->conditional_stack;
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   587
    while (cond)
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   588
    {
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   589
        Conditional *next = cond->next;
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   590
        put_conditional(ctx, cond);
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   591
        cond = next;
75e28bb57b2d Fixed cleanup of Conditionals in pop_source().
Ryan C. Gordon <icculus@icculus.org>
parents: 676
diff changeset
   592
    } // while
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   593
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   594
    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
   595
6d58b504cc6e Print out current source/line number when debugging any parser/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 701
diff changeset
   596
    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
   597
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   598
    put_include(ctx, state);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   599
} // pop_source
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   600
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   601
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   602
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
   603
                                 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
   604
{
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   605
    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
   606
} // 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
   607
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   608
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   609
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
   610
                            unsigned int sourcelen,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   611
                            MOJOSHADER_includeOpen open_callback,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   612
                            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
   613
                            const MOJOSHADER_preprocessorDefine *defines,
690
4710df464f13 Moved asm comment processing into the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 689
diff changeset
   614
                            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
   615
                            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
   616
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
    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
   618
    unsigned int i = 0;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   619
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
    // 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
   621
    assert(m != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
    assert(f != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   623
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
    Context *ctx = (Context *) m(sizeof (Context), d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
    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
   626
        return NULL;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   627
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
    memset(ctx, '\0', sizeof (Context));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
    ctx->malloc = m;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
    ctx->free = f;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
    ctx->malloc_data = d;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
    ctx->open_callback = open_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
    ctx->close_callback = close_callback;
690
4710df464f13 Moved asm comment processing into the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 689
diff changeset
   634
    ctx->asm_comments = asm_comments;
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   635
949
356f04114580 Hook up preprocessor string cache to MallocBridge().
Ryan C. Gordon <icculus@icculus.org>
parents: 945
diff changeset
   636
    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
   637
    okay = ((okay) && (ctx->filename_cache != NULL));
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   638
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   639
    ctx->file_macro = get_define(ctx);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   640
    okay = ((okay) && (ctx->file_macro != NULL));
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   641
    if ((okay) && (ctx->file_macro))
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   642
        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
   643
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   644
    ctx->line_macro = get_define(ctx);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   645
    okay = ((okay) && (ctx->line_macro != NULL));
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   646
    if ((okay) && (ctx->line_macro))
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   647
        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
   648
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   649
    // 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
   650
    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
   651
    unsigned int define_include_len = 0;
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   652
    if ((okay) && (define_count > 0))
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   653
    {
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   654
        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
   655
        okay = okay && (predefbuf != NULL);
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   656
        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
   657
        {
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   658
            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
   659
                                 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
   660
        } // for
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   661
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   662
        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
   663
        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
   664
        {
951
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   665
            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
   666
            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
   667
        } // if
6ef73d06ecb0 Preprocessor: Moved pushing of predefined macros over to Buffer.
Ryan C. Gordon <icculus@icculus.org>
parents: 950
diff changeset
   668
        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
   669
    } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   670
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   671
    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
   672
        okay = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   673
950
dcbf30c07fc9 Preprocessor: Don't push predefined macro null terminator to the include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 949
diff changeset
   674
    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
   675
    {
950
dcbf30c07fc9 Preprocessor: Don't push predefined macro null terminator to the include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 949
diff changeset
   676
        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
   677
        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
   678
                           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
   679
    } // if
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   680
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   681
    if (!okay)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   682
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   683
        preprocessor_end((Preprocessor *) ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   684
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   685
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   686
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   687
    return (Preprocessor *) ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   688
} // preprocessor_start
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   689
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
void preprocessor_end(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   692
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   693
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   694
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   695
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   696
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   697
    while (ctx->include_stack != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   698
        pop_source(ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   699
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   700
    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
   701
858
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   702
    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
   703
        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
   704
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   705
    free_define(ctx, ctx->file_macro);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   706
    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
   707
    free_define_pool(ctx);
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   708
    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
   709
    free_include_pool(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   710
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   711
    Free(ctx, ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   712
} // preprocessor_end
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   713
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
int preprocessor_outofmemory(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   716
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   717
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   718
    return ctx->out_of_memory;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   719
} // preprocessor_outofmemory
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   720
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   721
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   722
static inline void pushback(IncludeState *state)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   723
{
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   724
    #if DEBUG_PREPROCESSOR
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   725
    printf("PREPROCESSOR PUSHBACK\n");
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   726
    #endif
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   727
    assert(!state->pushedback);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   728
    state->pushedback = 1;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   729
} // pushback
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   730
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
static Token lexer(IncludeState *state)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   733
{
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   734
    if (!state->pushedback)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   735
        return preprocessor_lexer(state);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   736
    state->pushedback = 0;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   737
    return state->tokenval;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   738
} // lexer
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   739
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   740
638
e910619c61f4 Added a FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 637
diff changeset
   741
// !!! 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
   742
static int require_newline(IncludeState *state)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   743
{
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   744
    const Token token = lexer(state);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   745
    pushback(state);  // rewind no matter what.
654
9210bd7eb2e2 Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 652
diff changeset
   746
    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
   747
             (token == ((Token) '\n')) || (token == TOKEN_EOI) );
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   748
} // require_newline
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   749
940
bc2a5efade5e Added a bunch of FIXMEs to accurately portray current technical debt.
Ryan C. Gordon <icculus@icculus.org>
parents: 939
diff changeset
   750
// !!! 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
   751
static int token_to_int(IncludeState *state)
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   752
{
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   753
    assert(state->tokenval == TOKEN_INT_LITERAL);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   754
    char *buf = (char *) alloca(state->tokenlen+1);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   755
    memcpy(buf, state->token, state->tokenlen);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   756
    buf[state->tokenlen] = '\0';
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   757
    return atoi(buf);
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   758
} // token_to_int
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   759
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   760
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   761
static void handle_pp_include(Context *ctx)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   762
{
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   763
    IncludeState *state = ctx->include_stack;
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   764
    Token token = lexer(state);
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   765
    MOJOSHADER_includeType incltype;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   766
    char *filename = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   767
    int bogus = 0;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   768
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   769
    if (token == TOKEN_STRING_LITERAL)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   770
        incltype = MOJOSHADER_INCLUDETYPE_LOCAL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   771
    else if (token == ((Token) '<'))
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   772
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   773
        incltype = MOJOSHADER_INCLUDETYPE_SYSTEM;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   774
        // 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
   775
        //  considered part of the filename.  :/
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   776
        while (!bogus)
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
            if ( !(bogus = (state->bytes_left == 0)) )
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   779
            {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   780
                const char ch = *state->source;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   781
                if ( !(bogus = ((ch == '\r') || (ch == '\n'))) )
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
                    state->source++;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   784
                    state->bytes_left--;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   785
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   786
                    if (ch == '>')
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   787
                        break;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   788
                } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   789
            } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   790
        } // while
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   791
    } // else if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   792
    else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   793
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   794
        bogus = 1;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   795
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   796
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   797
    if (!bogus)
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
        state->token++;  // skip '<' or '\"'...
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   800
        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
   801
        filename = (char *) alloca(len);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   802
        memcpy(filename, state->token, len-1);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   803
        filename[len-1] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   804
        bogus = !require_newline(state);
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   805
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   806
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   807
    if (bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   808
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   809
        fail(ctx, "Invalid #include directive");
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   810
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   811
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   812
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   813
    const char *newdata = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   814
    unsigned int newbytes = 0;
813
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   815
    if ((ctx->open_callback == NULL) || (ctx->close_callback == NULL))
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   816
    {
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   817
        fail(ctx, "Saw #include, but no include callbacks defined");
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   818
        return;
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   819
    } // if
a8ec84003cd2 Make #include callbacks optional.
Ryan C. Gordon <icculus@icculus.org>
parents: 798
diff changeset
   820
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   821
    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
   822
                            &newdata, &newbytes, ctx->malloc,
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   823
                            ctx->free, ctx->malloc_data))
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   824
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   825
        fail(ctx, "Include callback failed");  // !!! FIXME: better error
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   826
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   827
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   828
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   829
    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
   830
    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
   831
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   832
        assert(ctx->out_of_memory);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   833
        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
   834
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   835
} // handle_pp_include
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
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   838
static void handle_pp_line(Context *ctx)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   839
{
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   840
    IncludeState *state = ctx->include_stack;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   841
    char *filename = NULL;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   842
    int linenum = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   843
    int bogus = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   844
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   845
    if (lexer(state) != TOKEN_INT_LITERAL)
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   846
        bogus = 1;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   847
    else
682
ad75eb06ddce First work on #if directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 681
diff changeset
   848
        linenum = token_to_int(state);
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   849
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   850
    if (!bogus)
871
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   851
    {
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   852
        Token t = lexer(state);
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   853
        if (t == ((Token) '\n'))
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   854
        {
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   855
            state->line = linenum;
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   856
            return;
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   857
        }
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   858
        bogus = (t != TOKEN_STRING_LITERAL);
e72ec737ed74 filename in #line is optional
Aras Pranckevicius <aras@unity3d.com>
parents: 869
diff changeset
   859
    }
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   860
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   861
    if (!bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   862
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   863
        state->token++;  // skip '\"'...
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   864
        filename = (char *) alloca(state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   865
        memcpy(filename, state->token, state->tokenlen-1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   866
        filename[state->tokenlen-1] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   867
        bogus = !require_newline(state);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   868
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   869
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   870
    if (bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   871
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   872
        fail(ctx, "Invalid #line directive");
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   873
        return;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   874
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   875
858
d51537335896 Formalized the compiler's string cache into a real API.
Ryan C. Gordon <icculus@icculus.org>
parents: 841
diff changeset
   876
    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
   877
    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
   878
    state->line = linenum;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   879
} // handle_pp_line
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   880
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   881
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   882
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
   883
{
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   884
    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
   885
    char *ptr = ctx->failstr;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   886
    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
   887
    int cpy = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   888
    int done = 0;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   889
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   890
    const char *prefix = "#error";
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   891
    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
   892
    strcpy(ctx->failstr, prefix);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   893
    avail -= prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   894
    ptr += prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   895
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   896
    state->report_whitespace = 1;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   897
    while (!done)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   898
    {
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   899
        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
   900
        switch (token)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   901
        {
615
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   902
            case ((Token) '\n'):
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   903
                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
   904
                // fall through!
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   905
            case TOKEN_INCOMPLETE_COMMENT:
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   906
            case TOKEN_EOI:
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   907
                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
   908
                done = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   909
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   910
894
1847405a16c6 Serious reworking of preprocessor macro replacement code.
Ryan C. Gordon <icculus@icculus.org>
parents: 882
diff changeset
   911
            case ((Token) ' '):
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   912
                if (!avail)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   913
                    break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   914
                *(ptr++) = ' ';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   915
                avail--;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   916
                break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   917
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   918
            default:
650
9c91067da49d Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 649
diff changeset
   919
                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
   920
                if (cpy)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   921
                    memcpy(ptr, state->token, cpy);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   922
                ptr += cpy;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   923
                avail -= cpy;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   924
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   925
        } // switch
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   926
    } // while
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   927
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   928
    *ptr = '\0';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   929
    state->report_whitespace = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   930
    ctx->isfail = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   931
} // handle_pp_error
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   932
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   933
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   934
static void handle_pp_define(Context *ctx)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   935
{
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   936
    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
   937
    int done = 0;
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   938
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   939
    if (lexer(state) != TOKEN_IDENTIFIER)
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   940
    {
754
d405cfa22392 Fixed typo.
Ryan C. Gordon <icculus@icculus.org>
parents: 748
diff changeset
   941
        fail(ctx, "Macro names must be identifiers");
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   942
        return;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   943
    } // if
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   944
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   945
    char *definition = NULL;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   946
    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
   947
    if (sym == NULL)
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   948
        return;
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   949
    memcpy(sym, state->token, state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   950
    sym[state->tokenlen] = '\0';
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   951
699
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   952
    if (strcmp(sym, "defined") == 0)
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   953
    {
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   954
        Free(ctx, sym);
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   955
        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
   956
        return;
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   957
    } // if
c2f50b391d96 Support for "#if defined" in preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 698
diff changeset
   958
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   959
    // 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
   960
    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
   961
    {
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   962
        if (ctx->file_macro)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
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
            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
   965
            free_define(ctx, ctx->file_macro);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   966
            ctx->file_macro = NULL;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   967
        } // if
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   968
    } // if
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   969
    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
   970
    {
896
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   971
        if (ctx->line_macro)
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   972
        {
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   973
            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
   974
            free_define(ctx, ctx->line_macro);
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   975
            ctx->line_macro = NULL;
7a7989b18117 Handle __FILE__ and __LINE__ better.
Ryan C. Gordon <icculus@icculus.org>
parents: 895
diff changeset
   976
        } // if
875
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   977
    } // else if
dc28354d576e Added support for __FILE__ and __LINE__ to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 873
diff changeset
   978
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   979
    // #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
   980
    state->report_whitespace = 1;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   981
    lexer(state);
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   982
    state->report_whitespace = 0;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   983
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
   984
    int params = 0;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   985
    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
   986
    static const char space = ' ';
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   987
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   988
    if (state->tokenval == ((Token) ' '))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   989
        lexer(state);  // skip it.
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   990
    else if (state->tokenval == ((Token) '('))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   991
    {
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   992
        IncludeState saved;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   993
        memcpy(&saved, state, sizeof (IncludeState));
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   994
        while (1)
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   995
        {
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   996
            if (lexer(state) != TOKEN_IDENTIFIER)
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   997
                break;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   998
            params++;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
   999
            if (lexer(state) != ((Token) ','))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1000
                break;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1001
        } // while
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1002
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1003
        if (state->tokenval != ((Token) ')'))
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1004
        {
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1005
            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
  1006
            goto handle_pp_define_failed;
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1007
        } // if
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1008
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1009
        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
  1010
            params = -1;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1011
        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
  1012
        {
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1013
            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
  1014
            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
  1015
                goto handle_pp_define_failed;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1016
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1017
            // roll all the way back, do it again.
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1018
            memcpy(state, &saved, sizeof (IncludeState));
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1019
            memset(idents, '\0', sizeof (char *) * params);
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1020
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1021
            int i;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1022
            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
  1023
            {
818ae6582f24 Fixed assertion failure when defining a void-argument macro: "#define a() b"
Ryan C. Gordon <icculus@icculus.org>
parents: 746
diff changeset
  1024
                lexer(state);
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1025
                assert(state->tokenval == TOKEN_IDENTIFIER);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1026
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1027
                char *dst = (char *) Malloc(ctx, state->tokenlen+1);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1028
                if (dst == NULL)
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1029
                    break;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1030
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1031
                memcpy(dst, state->token, state->tokenlen);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1032
                dst[state->tokenlen] = '\0';
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1033
                idents[i] = dst;
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1034
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1035
                if (i < (params-1))
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1036
                {
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1037
                    lexer(state);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1038
                    assert(state->tokenval == ((Token) ','));
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1039
                } // if
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1040
            } // for
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1041
755
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1042
            if (i != params)
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1043
            {
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1044
                assert(ctx->out_of_memory);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1045
                goto handle_pp_define_failed;
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1046
            } // if
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1047
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1048
            lexer(state);
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1049
            assert(state->tokenval == ((Token) ')'));
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1050
        } // else
6a7aa96c51c7 Reworked preprocessor macro argument parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 754
diff changeset
  1051
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1052
        lexer(state);
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1053
    } // else if
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1054
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1055
    pushback(state);
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1056
944
9f9fa9650772 Paying off more technical debt: unified growable buffers into one place.
Ryan C. Gordon <icculus@icculus.org>
parents: 941
diff changeset
  1057
    Buffer *buffer = buffer_create(128, MallocBridge, FreeBridge, ctx);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1058
678
9fa2eb7d7871 Preprocessor now supports macros with parameters.
Ryan C. Gordon <icculus@icculus.org>
parents: 677
diff changeset
  1059
    state->report_whitespace = 1;
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1060
    while ((!done) && (!ctx->out_of_memory))
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1061
    {
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
  1062
        const Token token = lexer(state);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1063
        switch (token)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1064
        {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1065
            case TOKEN_INCOMPLETE_COMMENT:
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1066
            case TOKEN_EOI:
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
  1067
                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
  1068
                done = 1;
aa3bec973a21 Check for "##" at the start and end of macro definitions.
Ryan C. Gordon <icculus@icculus.org>
parents: 861
diff changeset
  1069
                break;
aa3bec973a21 Check for "##" at the start and end of macro definitions.
Ryan C. Gordon <icculus@icculus.org>
parents: 861
diff changeset
  1070
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1071
            case ((Token) '\n'):
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1072
                done = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1073
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1074
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1075
            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
  1076
                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
  1077
                buffer_append(buffer, &space, 1);
639
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
            default:
944
9f9fa9650772 Paying off more technical debt: unified growable buffers into one place.
Ryan C. Gordon <icculus@icculus.org>
parents: 941
diff changeset
  1081
                buffer_append(buffer, state->token, state->tokenlen);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1082
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1083
        } // switch
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1084
    } // while
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1085
    state->report_whitespace = 0;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1086
944
9f9fa9650772 Paying off more technical debt: unified growable buffers into one place.
Ryan C. Gordon <icculus@icculus.org>
parents: 941
diff changeset
  1087
    size_t buflen = buffer_size(buffer) + 1;
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
  1088
    if (!ctx->out_of_memory)