mojoshader_preprocessor.c
author Ryan C. Gordon <icculus@icculus.org>
Thu, 19 Feb 2009 03:58:25 -0500
changeset 672 bcca8b3ae152
parent 658 22695d3d6b98
child 674 8ab124b33d3c
permissions -rw-r--r--
Fixed memory pool code.
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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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typedef struct DefineHash
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{
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    const char *identifier;
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    const char *definition;
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    struct DefineHash *next;
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} DefineHash;
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// Simple linked list to cache source filenames, so we don't have to copy
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//  the same string over and over for each opcode.
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typedef struct FilenameCache
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{
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    char *filename;
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    struct FilenameCache *next;
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} FilenameCache;
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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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    Conditional *conditional_pool;
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    IncludeState *include_stack;
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    IncludeState *include_pool;
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    DefineHash *define_hashtable[256];
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    DefineHash *define_pool;
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    FilenameCache *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 inline void *Malloc(Context *ctx, const size_t len)
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{
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    void *retval = ctx->malloc((int) len, ctx->malloc_data);
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    if (retval == NULL)
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        out_of_memory(ctx);
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    return retval;
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} // Malloc
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static inline void Free(Context *ctx, void *ptr)
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{
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    if (ptr != NULL)  // check for NULL in case of dumb free() impl.
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        ctx->free(ptr, ctx->malloc_data);
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} // Free
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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);
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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);
604
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        TOKENCASE(TOKEN_INCOMPLETE_COMMENT);
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        TOKENCASE(TOKEN_BAD_CHARS);
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        TOKENCASE(TOKEN_EOI);
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        TOKENCASE(TOKEN_PREPROCESSING_ERROR);
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        #undef TOKENCASE
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        case ((Token) '\n'):
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            printf("'\\n'");
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            break;
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629
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        case ((Token) '\\'):
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            printf("'\\\\'");
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            break;
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587
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        default:
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            assert(((int)tokenval) < 256);
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            printf("'%c'", (char) tokenval);
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            break;
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    } // switch
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    printf(")\n");
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} // MOJOSHADER_print_debug_token
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#endif
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611
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#if !MOJOSHADER_FORCE_INCLUDE_CALLBACKS
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// !!! FIXME: most of these _MSC_VER should probably be _WINDOWS?
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#ifdef _MSC_VER
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#define WIN32_LEAN_AND_MEAN 1
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#include <windows.h>  // GL headers need this for WINGDIAPI definition.
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#else
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#endif
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int MOJOSHADER_internal_include_open(MOJOSHADER_includeType inctype,
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                                     const char *fname, const char *parent,
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                                     const char **outdata,
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                                     unsigned int *outbytes,
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                                     MOJOSHADER_malloc m, MOJOSHADER_free f,
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                                     void *d)
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{
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#ifdef _MSC_VER
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#error Write me.
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#else
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    struct stat statbuf;
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    if (stat(fname, &statbuf) == -1)
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        return 0;
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    char *data = (char *) m(statbuf.st_size, d);
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    if (data == NULL)
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        return 0;
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    const int fd = open(fname, O_RDONLY);
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    if (fd == -1)
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    {
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        f(data, d);
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        return 0;
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   223
    } // if
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   224
    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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        return 0;
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   229
    } // if
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    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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   234
#endif
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   235
} // 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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   241
    f((void *) data, d);
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   242
} // MOJOSHADER_internal_include_close
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#endif  // !MOJOSHADER_FORCE_INCLUDE_CALLBACKS
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   245
632
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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// data buffer stuff...
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#define BUFFER_LEN (64 * 1024)
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typedef struct BufferList
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{
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    char buffer[BUFFER_LEN];
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    size_t bytes;
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    struct BufferList *next;
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} BufferList;
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typedef struct Buffer
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{
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    size_t total_bytes;
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    BufferList head;
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    BufferList *tail;
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} Buffer;
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633
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static void init_buffer(Buffer *buffer)
632
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{
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    buffer->total_bytes = 0;
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    buffer->head.bytes = 0;
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   267
    buffer->head.next = NULL;
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   268
    buffer->tail = &buffer->head;
633
9cd2376b9aa2 Renamed buffer_init() to init_buffer() to match rest of function names.
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   269
} // init_buffer
632
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static int add_to_buffer(Buffer *buffer, const char *data,
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                         size_t len, MOJOSHADER_malloc m, void *d)
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{
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    buffer->total_bytes += len;
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   276
    while (len > 0)
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    {
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        const size_t avail = BUFFER_LEN - buffer->tail->bytes;
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        const size_t cpy = (avail > len) ? len : avail;
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        memcpy(buffer->tail->buffer + buffer->tail->bytes, data, cpy);
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        len -= cpy;
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        data += cpy;
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        buffer->tail->bytes += cpy;
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        assert(buffer->tail->bytes <= BUFFER_LEN);
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        if (buffer->tail->bytes == BUFFER_LEN)
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        {
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            BufferList *item = (BufferList *) m(sizeof (BufferList), d);
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   288
            if (item == NULL)
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   289
                return 0;
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            item->bytes = 0;
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            item->next = NULL;
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            buffer->tail->next = item;
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   293
            buffer->tail = item;
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   294
        } // if
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    } // while
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   297
    return 1;
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   298
} // add_to_buffer
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   299
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static char *flatten_buffer(Buffer *buffer, MOJOSHADER_malloc m, void *d)
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{
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    char *retval = m(buffer->total_bytes + 1, d);
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   304
    if (retval == NULL)
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   305
        return NULL;
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   306
    BufferList *item = &buffer->head;
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   307
    char *ptr = retval;
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   308
    while (item != NULL)
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   309
    {
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        BufferList *next = item->next;
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   311
        memcpy(ptr, item->buffer, item->bytes);
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        ptr += item->bytes;
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   313
        item = next;
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   314
    } // while
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   315
    *ptr = '\0';
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   316
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    assert(ptr == (retval + buffer->total_bytes));
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   318
    return retval;
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   319
} // flatten_buffer
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   320
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   321
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   322
static void free_buffer(Buffer *buffer, MOJOSHADER_free f, void *d)
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   323
{
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   324
    // head is statically allocated, so start with head.next...
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   325
    BufferList *item = buffer->head.next;
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   326
    while (item != NULL)
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   327
    {
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   328
        BufferList *next = item->next;
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   329
        f(item, d);
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   330
        item = next;
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   331
    } // while
633
9cd2376b9aa2 Renamed buffer_init() to init_buffer() to match rest of function names.
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   332
    init_buffer(buffer);
632
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   333
} // free_buffer
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   334
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   335
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a09899ba5e8c Added some FIXMEs.
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   336
// !!! FIXME: maybe use these pool magic elsewhere?
632
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646
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   338
// Pool stuff...
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// ugh, I hate this macro salsa.
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   340
#define FREE_POOL(type, poolname) \
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   341
    static void free_##poolname##_pool(Context *ctx) { \
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   342
        type *item = ctx->poolname##_pool; \
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   343
        while (item != NULL) { \
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   344
            type *next = item->next; \
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   345
            Free(ctx, item); \
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   346
            item = next; \
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   347
        } \
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   348
    }
620
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   349
646
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   350
#define GET_POOL(type, poolname) \
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   351
    static type *get_##poolname(Context *ctx) { \
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   352
        type *retval = ctx->poolname##_pool; \
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   353
        if (retval != NULL) \
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   354
            ctx->poolname##_pool = retval->next; \
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   355
        else \
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   356
            retval = (type *) Malloc(ctx, sizeof (type)); \
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   357
        if (retval != NULL) \
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diff changeset
   358
            memset(retval, '\0', sizeof (type)); \
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diff changeset
   359
        return retval; \
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   360
    }
620
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   361
646
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   362
#define PUT_POOL(type, poolname) \
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   363
    static void put_##poolname(Context *ctx, type *item) { \
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diff changeset
   364
        item->next = ctx->poolname##_pool; \
672
bcca8b3ae152 Fixed memory pool code.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   365
        ctx->poolname##_pool = item; \
646
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diff changeset
   366
    }
620
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   367
646
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   368
#define IMPLEMENT_POOL(type, poolname) \
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   369
    FREE_POOL(type, poolname) \
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   370
    GET_POOL(type, poolname) \
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   371
    PUT_POOL(type, poolname)
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   372
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   373
IMPLEMENT_POOL(Conditional, conditional)
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   374
IMPLEMENT_POOL(IncludeState, include)
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   375
IMPLEMENT_POOL(DefineHash, define)
620
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diff changeset
   376
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
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diff changeset
   377
555
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   378
// Preprocessor define hashtable stuff...
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diff changeset
   379
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diff changeset
   380
static unsigned char hash_define(const char *sym)
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diff changeset
   381
{
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diff changeset
   382
    unsigned char retval = 0;
622
59b3003f6494 Fixed logic bug in string loop.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   383
    while (*sym)
555
940821555fda Initial work on preprocessor. Not yet complete!
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parents:
diff changeset
   384
        retval += *(sym++);
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parents:
diff changeset
   385
    return retval;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   386
} // hash_define
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parents:
diff changeset
   387
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   388
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   389
static int add_define(Context *ctx, const char *sym, const char *val, int copy)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   390
{
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   391
    char *identifier = NULL;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
    char *definition = NULL;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
    const unsigned char hash = hash_define(sym);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
    DefineHash *bucket = ctx->define_hashtable[hash];
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   395
    while (bucket)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   396
    {
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   397
        if (strcmp(bucket->identifier, sym) == 0)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   398
        {
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
            failf(ctx, "'%s' already defined", sym);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   400
            return 0;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   401
        } // if
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   402
        bucket = bucket->next;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   403
    } // while
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parents:
diff changeset
   404
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
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diff changeset
   405
    bucket = get_define(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   406
    if (bucket == NULL)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   407
        return 0;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   408
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
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diff changeset
   409
    identifier = StrDup(ctx, sym);
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   410
    if (identifier == NULL)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   411
    {
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   412
        put_define(ctx, bucket);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   413
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   414
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   416
    if (!copy)
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   417
        bucket->definition = val;
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   418
    else
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   419
    {
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   420
        definition = StrDup(ctx, val);
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   421
        if (definition == NULL)
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   422
        {
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   423
            Free(ctx, identifier);
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   424
            put_define(ctx, bucket);
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   425
            return 0;
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   426
        } // if
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   427
        bucket->definition = definition;
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   428
    } // if
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   429
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   430
    bucket->identifier = identifier;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   431
    bucket->next = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   432
    ctx->define_hashtable[hash] = bucket;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   433
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   434
} // add_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   435
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   437
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
   438
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
    const unsigned char hash = hash_define(sym);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   440
    DefineHash *bucket = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   441
    DefineHash *prev = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   442
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   443
    {
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   444
        if (strcmp(bucket->identifier, sym) == 0)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   445
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   446
            if (prev == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   447
                ctx->define_hashtable[hash] = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
            else
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
                prev->next = bucket->next;
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   450
            Free(ctx, (void *) bucket->identifier);
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   451
            Free(ctx, (void *) bucket->definition);
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   452
            put_define(ctx, bucket);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   453
            return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   454
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   455
        prev = bucket;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   456
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   457
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   458
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   459
    return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   460
} // remove_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   461
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   462
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   463
static const char *find_define(Context *ctx, const char *sym)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   464
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
    const unsigned char hash = hash_define(sym);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   466
    DefineHash *bucket = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
    {
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   469
        if (strcmp(bucket->identifier, sym) == 0)
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   470
            return bucket->definition;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
    return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
} // find_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   475
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   476
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   477
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
   478
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   479
    int i;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
    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
   481
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
        DefineHash *bucket = ctx->define_hashtable[i];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
        ctx->define_hashtable[i] = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   484
        while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   486
            DefineHash *next = bucket->next;
655
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   487
            Free(ctx, (void *) bucket->identifier);
0b82fdeebf86 Changed DefineHash definition.
Ryan C. Gordon <icculus@icculus.org>
parents: 654
diff changeset
   488
            Free(ctx, (void *) bucket->definition);
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   489
            put_define(ctx, bucket);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
            bucket = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   491
        } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   492
    } // for
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   493
} // find_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   494
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   495
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   496
// filename cache stuff...
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   497
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   498
static const char *cache_filename(Context *ctx, const char *fname)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   499
{
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   500
    if (fname == NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   501
        return NULL;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   502
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   503
    // !!! FIXME: this could be optimized into a hash table, but oh well.
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   504
    FilenameCache *item = ctx->filename_cache;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   505
    while (item != NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   506
    {
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   507
        if (strcmp(item->filename, fname) == 0)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   508
            return item->filename;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   509
        item = item->next;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   510
    } // while
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   511
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   512
    // new cache item.
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   513
    item = (FilenameCache *) Malloc(ctx, sizeof (FilenameCache));
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   514
    if (item == NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   515
        return NULL;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   516
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   517
    item->filename = StrDup(ctx, fname);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   518
    if (item->filename == NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   519
    {
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   520
        Free(ctx, item);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   521
        return NULL;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   522
    } // if
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   523
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   524
    item->next = ctx->filename_cache;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   525
    ctx->filename_cache = item;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   526
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   527
    return item->filename;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   528
} // cache_filename
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   529
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   530
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   531
static void free_filename_cache(Context *ctx)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   532
{
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   533
    FilenameCache *item = ctx->filename_cache;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   534
    while (item != NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   535
    {
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   536
        FilenameCache *next = item->next;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   537
        Free(ctx, item->filename);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   538
        Free(ctx, item);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   539
        item = next;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   540
    } // while
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   541
} // free_filename_cache
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   542
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   543
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   544
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
   545
                       unsigned int srclen, unsigned int linenum,
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   546
                       MOJOSHADER_includeClose close_callback)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   547
{
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   548
    IncludeState *state = get_include(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   549
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   550
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   552
    if (fname != NULL)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   553
    {
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   554
        state->filename = cache_filename(ctx, fname);
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   555
        if (state->filename == NULL)
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   556
        {
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   557
            put_include(ctx, state);
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   558
            return 0;
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   559
        } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   560
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   561
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   562
    state->close_callback = close_callback;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   563
    state->source_base = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   564
    state->source = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   565
    state->token = source;
642
624ab8696f9b Enormous amount of tapdancing to handle EOI better in the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 641
diff changeset
   566
    state->orig_length = srclen;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
    state->bytes_left = srclen;
640
813a139a4a5a push_source() now specifies a line number.
Ryan C. Gordon <icculus@icculus.org>
parents: 639
diff changeset
   568
    state->line = linenum;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   569
    state->next = ctx->include_stack;
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
    ctx->include_stack = state;
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
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   574
} // push_source
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   575
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   576
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   577
static void pop_source(Context *ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   578
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   579
    IncludeState *state = ctx->include_stack;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   580
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   581
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   582
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   583
    if (state->close_callback)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   584
    {
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   585
        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
   586
                              ctx->free, ctx->malloc_data);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   587
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   588
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   589
    // 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
   590
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   591
    while (state->conditional_stack)
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   592
        put_conditional(ctx, state->conditional_stack);
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;
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   595
    put_include(ctx, state);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   596
} // pop_source
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   597
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   598
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   599
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
   600
                                 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
   601
{
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   602
    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
   603
} // 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
   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
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   606
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
   607
                            unsigned int sourcelen,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   608
                            MOJOSHADER_includeOpen open_callback,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   609
                            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
   610
                            const MOJOSHADER_preprocessorDefine *defines,
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   611
                            unsigned int define_count,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   612
                            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
   613
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   614
    int okay = 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   615
    int i = 0;
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
    // 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
   618
    assert(m != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   619
    assert(f != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
    assert(open_callback != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
    assert(close_callback != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   623
    Context *ctx = (Context *) m(sizeof (Context), d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   627
    memset(ctx, '\0', sizeof (Context));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
    ctx->malloc = m;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
    ctx->free = f;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
    ctx->malloc_data = d;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
    ctx->open_callback = open_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
    ctx->close_callback = close_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   634
    // 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
   635
    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
   636
    unsigned int define_include_len = 0;
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   637
    if (define_count > 0)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   638
    {
657
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   639
        for (i = 0; i < define_count; i++)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   640
        {
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
   641
            define_include_len += strlen(defines[i].identifier);
22695d3d6b98 Should be an array of structs, not an array of pointers to structs.
Ryan C. Gordon <icculus@icculus.org>
parents: 657
diff changeset
   642
            define_include_len += strlen(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
   643
            define_include_len += 10;  // "#define<space><space><newline>"
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   644
        } // for
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   645
        define_include_len++;  // for null terminator.
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   646
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   647
        define_include = (char *) Malloc(ctx, define_include_len);
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   648
        if (define_include == NULL)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   649
            okay = 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
   650
        else
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   651
        {
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   652
            char *ptr = 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
   653
            for (i = 0; i < define_count; i++)
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   654
            {
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
   655
                ptr += sprintf(ptr, "#define %s %s\n", defines[i].identifier,
22695d3d6b98 Should be an array of structs, not an array of pointers to structs.
Ryan C. Gordon <icculus@icculus.org>
parents: 657
diff changeset
   656
                               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
   657
            } // for
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   658
        } // else
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   659
    } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   660
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   661
    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
   662
        okay = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   663
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
    if ((okay) && (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
   665
    {
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   666
        okay = push_source(ctx, "<predefined macros>", 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
   667
                           define_include_len, 1, 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
   668
    } // if
1268d95644f0 Fold predefined macros into a virtual #include at the start of input.
Ryan C. Gordon <icculus@icculus.org>
parents: 656
diff changeset
   669
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   670
    if (!okay)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   671
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   672
        preprocessor_end((Preprocessor *) ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   673
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   674
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   675
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   676
    return (Preprocessor *) ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   677
} // preprocessor_start
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   678
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   679
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   680
void preprocessor_end(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   681
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   682
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   683
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   684
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   685
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   686
    while (ctx->include_stack != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   687
        pop_source(ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   688
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   689
    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
   690
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   691
    free_filename_cache(ctx);
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
   692
    free_define_pool(ctx);
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   693
    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
   694
    free_include_pool(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   695
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   696
    Free(ctx, ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   697
} // preprocessor_end
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   698
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   699
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   700
int preprocessor_outofmemory(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   701
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   702
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   703
    return ctx->out_of_memory;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   704
} // preprocessor_outofmemory
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   705
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   706
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   707
static inline void pushback(IncludeState *state)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   708
{
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   709
    #if DEBUG_PREPROCESSOR
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   710
    printf("PREPROCESSOR PUSHBACK\n");
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   711
    #endif
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   712
    assert(!state->pushedback);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   713
    state->pushedback = 1;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   714
} // pushback
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   715
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   716
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   717
static Token lexer(IncludeState *state)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   718
{
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   719
    if (!state->pushedback)
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   720
        return preprocessor_lexer(state);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   721
    state->pushedback = 0;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   722
    return state->tokenval;
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   723
} // lexer
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   724
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   725
638
e910619c61f4 Added a FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 637
diff changeset
   726
// !!! 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
   727
static int require_newline(IncludeState *state)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   728
{
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   729
    const Token token = lexer(state);
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   730
    pushback(state);  // rewind no matter what.
654
9210bd7eb2e2 Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 652
diff changeset
   731
    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
   732
             (token == ((Token) '\n')) || (token == TOKEN_EOI) );
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   733
} // require_newline
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   734
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   735
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   736
static void handle_pp_include(Context *ctx)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   737
{
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   738
    IncludeState *state = ctx->include_stack;
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   739
    Token token = lexer(state);
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   740
    MOJOSHADER_includeType incltype;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   741
    char *filename = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   742
    int bogus = 0;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   743
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   744
    if (token == TOKEN_STRING_LITERAL)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   745
        incltype = MOJOSHADER_INCLUDETYPE_LOCAL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   746
    else if (token == ((Token) '<'))
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   747
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   748
        incltype = MOJOSHADER_INCLUDETYPE_SYSTEM;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   749
        // 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
   750
        //  considered part of the filename.  :/
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   751
        while (!bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   752
        {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   753
            if ( !(bogus = (state->bytes_left == 0)) )
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   754
            {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   755
                const char ch = *state->source;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   756
                if ( !(bogus = ((ch == '\r') || (ch == '\n'))) )
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   757
                {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   758
                    state->source++;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   759
                    state->bytes_left--;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   760
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   761
                    if (ch == '>')
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   762
                        break;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   763
                } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   764
            } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   765
        } // while
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   766
    } // else if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   767
    else
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
        bogus = 1;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   770
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   771
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   772
    if (!bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   773
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   774
        state->token++;  // skip '<' or '\"'...
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   775
        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
   776
        filename = (char *) alloca(len);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   777
        memcpy(filename, state->token, len-1);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   778
        filename[len-1] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   779
        bogus = !require_newline(state);
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   780
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   781
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   782
    if (bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   783
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   784
        fail(ctx, "Invalid #include directive");
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   785
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   786
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   787
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   788
    const char *newdata = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   789
    unsigned int newbytes = 0;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   790
    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
   791
                            &newdata, &newbytes, ctx->malloc,
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   792
                            ctx->free, ctx->malloc_data))
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
        fail(ctx, "Include callback failed");  // !!! FIXME: better error
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   795
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   796
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   797
656
ddb1a0b4c443 Let there be different close callbacks per IncludeState.
Ryan C. Gordon <icculus@icculus.org>
parents: 655
diff changeset
   798
    if (!push_source(ctx, filename, newdata, newbytes, 1, ctx->close_callback))
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   799
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   800
        assert(ctx->out_of_memory);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   801
        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
   802
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   803
} // handle_pp_include
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   804
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   805
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   806
static void handle_pp_line(Context *ctx)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   807
{
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   808
    IncludeState *state = ctx->include_stack;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   809
    char *filename = NULL;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   810
    int linenum = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   811
    int bogus = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   812
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   813
    if (lexer(state) != TOKEN_INT_LITERAL)
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   814
        bogus = 1;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   815
    else
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   816
    {
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   817
        char *buf = (char *) alloca(state->tokenlen+1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   818
        memcpy(buf, state->token, state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   819
        buf[state->tokenlen] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   820
        linenum = atoi(buf);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   821
    } // else
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   822
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   823
    if (!bogus)
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   824
        bogus = (lexer(state) != TOKEN_STRING_LITERAL);
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   825
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   826
    if (!bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   827
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   828
        state->token++;  // skip '\"'...
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   829
        filename = (char *) alloca(state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   830
        memcpy(filename, state->token, state->tokenlen-1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   831
        filename[state->tokenlen-1] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   832
        bogus = !require_newline(state);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   833
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   834
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   835
    if (bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   836
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   837
        fail(ctx, "Invalid #line directive");
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   838
        return;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   839
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   840
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   841
    const char *cached = cache_filename(ctx, filename);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   842
    assert((cached != NULL) || (ctx->out_of_memory));
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   843
    state->filename = cached;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   844
    state->line = linenum;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   845
} // handle_pp_line
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   846
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   847
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   848
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
   849
{
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   850
    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
   851
    char *ptr = ctx->failstr;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   852
    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
   853
    int cpy = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   854
    int done = 0;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   855
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   856
    const char *prefix = "#error";
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   857
    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
   858
    strcpy(ctx->failstr, prefix);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   859
    avail -= prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   860
    ptr += prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   861
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   862
    state->report_whitespace = 1;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   863
    while (!done)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   864
    {
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   865
        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
   866
        switch (token)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   867
        {
615
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   868
            case ((Token) '\n'):
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   869
                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
   870
                // fall through!
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   871
            case TOKEN_INCOMPLETE_COMMENT:
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   872
            case TOKEN_EOI:
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   873
                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
   874
                done = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   875
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   876
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   877
            case ' ':
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   878
                if (!avail)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   879
                    break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   880
                *(ptr++) = ' ';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   881
                avail--;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   882
                break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   883
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   884
            default:
650
9c91067da49d Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 649
diff changeset
   885
                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
   886
                if (cpy)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   887
                    memcpy(ptr, state->token, cpy);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   888
                ptr += cpy;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   889
                avail -= cpy;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   890
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   891
        } // switch
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   892
    } // while
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   893
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   894
    *ptr = '\0';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   895
    state->report_whitespace = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   896
    ctx->isfail = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   897
} // handle_pp_error
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   898
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   899
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   900
static void handle_pp_define(Context *ctx)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   901
{
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   902
    IncludeState *state = ctx->include_stack;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   903
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   904
    if (lexer(state) != TOKEN_IDENTIFIER)
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   905
    {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   906
        fail(ctx, "Macro names must be indentifiers");
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   907
        return;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   908
    } // if
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   909
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   910
    MOJOSHADER_malloc m = ctx->malloc;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   911
    void *d = ctx->malloc_data;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   912
    const char space = ' ';
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   913
    char *sym = (char *) alloca(state->tokenlen+1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   914
    memcpy(sym, state->token, state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   915
    sym[state->tokenlen] = '\0';
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   916
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   917
    Buffer buffer;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   918
    init_buffer(&buffer);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   919
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   920
    int done = 0;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   921
    state->report_whitespace = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   922
    while ((!done) && (!ctx->out_of_memory))
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   923
    {
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   924
        const Token token = lexer(state);
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   925
        switch (token)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   926
        {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   927
            case TOKEN_INCOMPLETE_COMMENT:
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   928
            case TOKEN_EOI:
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   929
                pushback(state);  // move back so we catch this later.
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   930
                // fall through!
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   931
            case ((Token) '\n'):
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   932
                done = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   933
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   934
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   935
            case ((Token) ' '):  // may not actually point to ' '.
643
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   936
                if (buffer.total_bytes > 0)
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   937
                {
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   938
                    if (!add_to_buffer(&buffer, &space, 1, m, d))
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   939
                        ctx->out_of_memory = 1;
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   940
                } // if
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   941
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   942
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   943
            default:
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   944
                if (!add_to_buffer(&buffer,state->token,state->tokenlen,m,d))
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   945
                    ctx->out_of_memory = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   946
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   947
        } // switch
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   948
    } // while
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   949
    state->report_whitespace = 0;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   950
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   951
    char *definition = NULL;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   952
    if (!ctx->out_of_memory)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   953
    {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   954
        definition = flatten_buffer(&buffer, m, d);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   955
        ctx->out_of_memory = (definition == NULL);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   956
    } // if
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   957
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   958
    free_buffer(&buffer, ctx->free, d);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   959
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   960
    if (ctx->out_of_memory)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   961
        return;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   962
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   963
    assert(done);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   964
    add_define(ctx, sym, definition, 0);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   965
} // handle_pp_define
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   966
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   967
618
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   968
static void handle_pp_undef(Context *ctx)
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   969
{
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   970
    IncludeState *state = ctx->include_stack;
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   971
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   972
    if (lexer(state) != TOKEN_IDENTIFIER)
618
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   973
    {
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   974
        fail(ctx, "Macro names must be indentifiers");
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   975
        return;
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   976
    } // if
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   977
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   978
    char *sym = (char *) alloca(state->tokenlen+1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   979
    memcpy(sym, state->token, state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
   980
    sym[state->tokenlen] = '\0';
618
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   981
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   982
    if (!require_newline(state))
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   983
    {
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   984
        fail(ctx, "Invalid #undef directive");
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   985
        return;
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   986
    } // if
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   987
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   988
    remove_define(ctx, sym);
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   989
} // handle_pp_undef
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   990
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   991
623
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   992
static Conditional *_handle_pp_ifdef(Context *ctx, const Token type)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   993
{
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   994
    IncludeState *state = ctx->include_stack;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   995
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   996
    assert((type == TOKEN_PP_IFDEF) || (type == TOKEN_PP_IFNDEF));
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   997
652
3333a0774ccc Added basic pushback facility to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 650
diff changeset
   998
    if (lexer(state) != TOKEN_IDENTIFIER)
623
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   999
    {
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1000
        fail(ctx, "Macro names must be indentifiers");
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1001
        return NULL;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1002
    } // if
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1003
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
  1004
    char *sym = (char *) alloca(state->tokenlen+1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
  1005
    memcpy(sym, state->token, state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
  1006
    sym[state->tokenlen] = '\0';
623
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1007
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1008
    if (!require_newline(state))
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1009
    {
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1010
        if (type == TOKEN_PP_IFDEF)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1011
            fail(ctx, "Invalid #ifdef directive");
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1012
        else
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1013
            fail(ctx, "Invalid #ifndef directive");
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1014
        return NULL;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1015
    } // if
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1016
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1017
    Conditional *conditional = get_conditional(ctx);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1018
    assert((conditional != NULL) || (ctx->out_of_memory));
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1019
    if (conditional == NULL)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1020
        return NULL;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1021
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1022
    Conditional *prev = state->conditional_stack;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1023
    int skipping = ((prev != NULL) && (prev->skipping));
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1024
    if (!skipping)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1025
    {
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1026
        const int found = (find_define(ctx, sym) != NULL);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1027
        if (type == TOKEN_PP_IFDEF)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1028
            skipping = !found;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1029
        else
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1030
            skipping = found;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1031
    } // if
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1032
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1033
    conditional->type = type;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1034
    conditional->linenum = state->line - 1;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1035
    conditional->skipping = skipping;
625
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1036
    conditional->chosen = !skipping;
623
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1037
    conditional->next = prev;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1038
    state->conditional_stack = conditional;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1039
    return conditional;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1040
} // _handle_pp_ifdef
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1041
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1042
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1043
static inline void handle_pp_ifdef(Context *ctx)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1044
{
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1045
    _handle_pp_ifdef(ctx, TOKEN_PP_IFDEF);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1046
} // handle_pp_ifdef
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1047
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1048
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1049
static inline void handle_pp_ifndef(Context *ctx)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1050
{
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1051
    _handle_pp_ifdef(ctx, TOKEN_PP_IFNDEF);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1052
} // handle_pp_ifndef
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1053
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1054
624
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1055
static inline void handle_pp_else(Context *ctx)
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1056
{
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1057
    IncludeState *state = ctx->include_stack;
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1058
    Conditional *cond = state->conditional_stack;
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1059
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1060
    if (!require_newline(state))
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1061
        fail(ctx, "Invalid #else directive");
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1062
    else if (cond == NULL)
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1063
        fail(ctx, "#else without #if");
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1064
    else if (cond->type == TOKEN_PP_ELSE)
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1065
        fail(ctx, "#else after #else");
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1066
    else
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1067
    {
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1068
        cond->type = TOKEN_PP_ELSE;
625
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1069
        cond->skipping = cond->chosen;
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1070
        if (!cond->chosen)
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1071
            cond->chosen = 1;
624
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1072
    } // else
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1073
} // handle_pp_else
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1074
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1075
621
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1076
static void handle_pp_endif(Context *ctx)
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1077
{
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1078
    IncludeState *state = ctx->include_stack;
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1079
    Conditional *cond = state->conditional_stack;
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1080
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1081
    if (!require_newline(state))
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1082
        fail(ctx, "Invalid #endif directive");
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1083
    else if (cond == NULL)
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1084
        fail(ctx, "Unmatched #endif");
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1085
    else
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1086
    {
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1087
        state->conditional_stack = cond->next;  // pop it.
646
60911555980a Use memory pools when allocating a bunch of short-lived structures.
Ryan C. Gordon <icculus@icculus.org>
parents: 645
diff changeset
  1088
        put_conditional(ctx, cond);
621
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1089
    } // else
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1090
} // handle_pp_endif
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1091
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1092
644
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1093
static int handle_pp_identifier(Context *ctx)
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1094
{
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1095
    IncludeState *state = ctx->include_stack;
648
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
  1096
    char *sym = (char *) alloca(state->tokenlen+1);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
  1097
    memcpy(sym, state->token, state->tokenlen);
243e35876142 Have lexer calculate token size now.
Ryan C. Gordon <icculus@icculus.org>
parents: 647
diff changeset
  1098
    sym[state->tokenlen] = '\0';
644
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1099
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1100
    const char *def = find_define(ctx, sym);
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1101
    if (def == NULL)
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1102
        return 0;   // just send the token through unc