mojoshader_preprocessor.c
author Ryan C. Gordon <icculus@icculus.org>
Fri, 13 Feb 2009 09:08:33 -0500
changeset 607 40d903561ff8
parent 606 63e7a66ac320
child 611 8c2ee1a97ee1
permissions -rw-r--r--
Removed unused fields.
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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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typedef struct DefineHash
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{
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    MOJOSHADER_preprocessorDefine define;
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    struct DefineHash *next;
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} DefineHash;
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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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    IncludeState *include_stack;
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    DefineHash *define_hashtable[256];
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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
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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);
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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);
587
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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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        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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555
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// Preprocessor define hashtable stuff...
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static unsigned char hash_define(const char *sym)
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{
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    unsigned char retval = 0;
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    while (sym)
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        retval += *(sym++);
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    return retval;
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} // hash_define
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static int add_define(Context *ctx, const char *sym, const char *val)
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{
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    char *identifier = NULL;
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    char *definition = NULL;
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    const unsigned char hash = hash_define(sym);
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    DefineHash *bucket = ctx->define_hashtable[hash];
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    while (bucket)
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    {
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        if (strcmp(bucket->define.identifier, sym) == 0)
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        {
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            failf(ctx, "'%s' already defined", sym);
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            return 0;
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        } // if
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        bucket = bucket->next;
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    } // while
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    bucket = (DefineHash *) Malloc(ctx, sizeof (DefineHash));
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    if (bucket == NULL)
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        return 0;
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    identifier = (char *) Malloc(ctx, strlen(sym) + 1);
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    definition = (char *) Malloc(ctx, strlen(val) + 1);
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    if ((identifier == NULL) || (definition == NULL))
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    {
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        Free(ctx, identifier);
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        Free(ctx, definition);
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        Free(ctx, bucket);
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        return 0;
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    } // if
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    strcpy(identifier, sym);
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    strcpy(definition, val);
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    bucket->define.identifier = identifier;
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    bucket->define.definition = definition;
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    bucket->next = ctx->define_hashtable[hash];
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    ctx->define_hashtable[hash] = bucket;
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    return 1;
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} // add_define
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static int remove_define(Context *ctx, const char *sym)
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{
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    const unsigned char hash = hash_define(sym);
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    DefineHash *bucket = ctx->define_hashtable[hash];
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    DefineHash *prev = NULL;
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    while (bucket)
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    {
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        if (strcmp(bucket->define.identifier, sym) == 0)
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        {
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            if (prev == NULL)
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                ctx->define_hashtable[hash] = bucket->next;
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            else
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                prev->next = bucket->next;
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            Free(ctx, (void *) bucket->define.identifier);
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            Free(ctx, (void *) bucket->define.definition);
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            Free(ctx, bucket);
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            return 1;
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        } // if
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        prev = bucket;
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        bucket = bucket->next;
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    } // while
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    failf(ctx, "'%s' not defined", sym);
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    return 0;
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   234
} // remove_define
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static const char *find_define(Context *ctx, const char *sym)
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{
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    const unsigned char hash = hash_define(sym);
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    DefineHash *bucket = ctx->define_hashtable[hash];
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   241
    while (bucket)
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   242
    {
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        if (strcmp(bucket->define.identifier, sym) == 0)
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            return bucket->define.definition;
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        bucket = bucket->next;
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   246
    } // while
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   247
    return NULL;
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   248
} // find_define
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static void free_all_defines(Context *ctx)
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{
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   253
    int i;
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    for (i = 0; i < STATICARRAYLEN(ctx->define_hashtable); i++)
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   255
    {
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        DefineHash *bucket = ctx->define_hashtable[i];
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        ctx->define_hashtable[i] = NULL;
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   258
        while (bucket)
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   259
        {
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            DefineHash *next = bucket->next;
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            Free(ctx, (void *) bucket->define.identifier);
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   262
            Free(ctx, (void *) bucket->define.definition);
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   263
            Free(ctx, bucket);
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   264
            bucket = next;
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   265
        } // while
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   266
    } // for
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} // find_define
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static int push_source(Context *ctx, const char *fname, const char *source,
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   271
                       unsigned int srclen, int included)
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{
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    IncludeState *state = (IncludeState *) Malloc(ctx, sizeof (IncludeState));
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   274
    if (state == NULL)
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        return 0;
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   276
    memset(state, '\0', sizeof (IncludeState));
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   277
560
225d579ae929 Handle NULL file names.
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   278
    if (fname != NULL)
555
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   279
    {
560
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   280
        state->filename = StrDup(ctx, fname);
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   281
        if (state->filename == NULL)
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diff changeset
   282
        {
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diff changeset
   283
            Free(ctx, state);
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   284
            return 0;
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diff changeset
   285
        } // if
555
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   286
    } // if
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   287
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   288
    state->included = included;
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diff changeset
   289
    state->source_base = source;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   290
    state->source = source;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   291
    state->token = source;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   292
    state->bytes_left = srclen;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   293
    state->line = 1;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   294
    state->next = ctx->include_stack;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   295
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   296
    ctx->include_stack = state;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   297
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   298
    return 1;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   299
} // push_source
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   300
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   301
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   302
static void pop_source(Context *ctx)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   303
{
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   304
    IncludeState *state = ctx->include_stack;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   305
    if (state == NULL)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   306
        return;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   307
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   308
    if (state->included)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   309
    {
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   310
        ctx->close_callback(state->source_base, ctx->malloc,
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   311
                            ctx->free, ctx->malloc_data);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   312
    } // if
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   313
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   314
    ctx->include_stack = state->next;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   315
    Free(ctx, state->filename);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   316
    Free(ctx, state);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   317
} // pop_source
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   318
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   319
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   320
Preprocessor *preprocessor_start(const char *fname, const char *source,
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   321
                            unsigned int sourcelen,
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   322
                            MOJOSHADER_includeOpen open_callback,
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   323
                            MOJOSHADER_includeClose close_callback,
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   324
                            const MOJOSHADER_preprocessorDefine **defines,
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   325
                            unsigned int define_count,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   326
                            MOJOSHADER_malloc m, MOJOSHADER_free f, void *d)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   327
{
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   328
    int okay = 1;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   329
    int i = 0;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   330
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   331
    // 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
   332
    assert(m != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   333
    assert(f != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   334
    assert(open_callback != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   335
    assert(close_callback != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   336
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   337
    Context *ctx = (Context *) m(sizeof (Context), d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   338
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   339
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   340
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   341
    memset(ctx, '\0', sizeof (Context));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   342
    ctx->malloc = m;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   343
    ctx->free = f;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   344
    ctx->malloc_data = d;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   345
    ctx->open_callback = open_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   346
    ctx->close_callback = close_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   347
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   348
    for (i = 0; i < define_count; i++)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   349
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   350
        if (!add_define(ctx, defines[i]->identifier, defines[i]->definition))
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   351
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   352
            okay = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   353
            break;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   354
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   355
    } // for
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   356
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   357
    if ((okay) && (!push_source(ctx, fname, source, sourcelen, 0)))
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   358
        okay = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   359
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   360
    if (!okay)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   361
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   362
        preprocessor_end((Preprocessor *) ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   363
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   364
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   365
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   366
    return (Preprocessor *) ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   367
} // preprocessor_start
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   368
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   369
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   370
void preprocessor_end(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   371
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   372
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   373
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   374
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   375
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   376
    while (ctx->include_stack != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   377
        pop_source(ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   378
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   379
    free_all_defines(ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   380
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   381
    Free(ctx, ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   382
} // preprocessor_end
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   383
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   384
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
int preprocessor_outofmemory(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   386
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   387
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   388
    return ctx->out_of_memory;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   389
} // preprocessor_outofmemory
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   390
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   391
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   392
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
   393
{
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   394
    IncludeState *state = ctx->include_stack;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   395
    const char *data = NULL;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   396
    int done = 0;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   397
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   398
    while (!done)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   399
    {
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   400
        const char *source = state->source;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   401
        const Token token = preprocessor_internal_lexer(state);
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   402
        switch (token)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   403
        {
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   404
            case TOKEN_INCOMPLETE_COMMENT:
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   405
                state->source = source;  // move back so we catch this later.
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   406
                done = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   407
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   408
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   409
            case ((Token) '\n'):
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   410
            case TOKEN_EOI:
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   411
                done = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   412
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   413
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   414
            default:
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   415
                if (data == NULL)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   416
                    data = state->token;  // skip #error token.
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   417
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   418
        } // switch
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   419
    } // while
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   420
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   421
    const char *prefix = "#error ";
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   422
    const size_t prefixlen = strlen(prefix);
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   423
    const int len = (int) (state->source - data);
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   424
    const int cpy = Min(len, sizeof (ctx->failstr) - prefixlen);
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   425
    strcpy(ctx->failstr, prefix);
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   426
    if (cpy > 0)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   427
        memcpy(ctx->failstr + prefixlen, data, cpy);
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   428
    ctx->failstr[cpy + prefixlen] = '\0';
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   429
    ctx->isfail = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   430
} // handle_pp_error
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   431
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   432
561
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   433
static inline const char *_preprocessor_nexttoken(Preprocessor *_ctx,
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   434
                                             unsigned int *_len, Token *_token)
555
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
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   437
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   438
    while (1)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
    {
598
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   440
        if (ctx->isfail)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   441
        {
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   442
            ctx->isfail = 0;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   443
            *_token = TOKEN_PREPROCESSING_ERROR;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   444
            *_len = strlen(ctx->failstr);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   445
            return ctx->failstr;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   446
        } // if
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   447
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
        IncludeState *state = ctx->include_stack;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
        if (state == NULL)
559
d34ac77da171 Preprocessor should return TOKEN_EOI when we finish the whole include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   450
        {
d34ac77da171 Preprocessor should return TOKEN_EOI when we finish the whole include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   451
            *_token = TOKEN_EOI;
d34ac77da171 Preprocessor should return TOKEN_EOI when we finish the whole include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   452
            *_len = 0;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   453
            return NULL;  // we're done!
559
d34ac77da171 Preprocessor should return TOKEN_EOI when we finish the whole include stack.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   454
        } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   455
605
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   456
        // !!! FIXME: todo.
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   457
        // TOKEN_PP_INCLUDE,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   458
        // TOKEN_PP_LINE,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   459
        // TOKEN_PP_DEFINE,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   460
        // TOKEN_PP_UNDEF,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   461
        // TOKEN_PP_IF,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   462
        // TOKEN_PP_IFDEF,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   463
        // TOKEN_PP_IFNDEF,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   464
        // TOKEN_PP_ELSE,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   465
        // TOKEN_PP_ELIF,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   466
        // TOKEN_PP_ENDIF,
197c9f2999b7 Added some TODOs for the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 604
diff changeset
   467
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
        Token token = preprocessor_internal_lexer(state);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   469
        if (token == TOKEN_EOI)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   470
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
            assert(state->bytes_left == 0);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
            pop_source(ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
            continue;  // pick up again after parent's #include line.
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   475
601
bb1484be4e1b Reworked and documented preprocessor tokens.
Ryan C. Gordon <icculus@icculus.org>
parents: 598
diff changeset
   476
        else if (token == TOKEN_INCOMPLETE_COMMENT)
565
c0718e4595e5 Set an error in the preprocessor if there's an incomplete multiline comment.
Ryan C. Gordon <icculus@icculus.org>
parents: 564
diff changeset
   477
        {
c0718e4595e5 Set an error in the preprocessor if there's an incomplete multiline comment.
Ryan C. Gordon <icculus@icculus.org>
parents: 564
diff changeset
   478
            fail(ctx, "Incomplete multiline comment");
598
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   479
            continue;  // will return at top of loop.
565
c0718e4595e5 Set an error in the preprocessor if there's an incomplete multiline comment.
Ryan C. Gordon <icculus@icculus.org>
parents: 564
diff changeset
   480
        } // else if
c0718e4595e5 Set an error in the preprocessor if there's an incomplete multiline comment.
Ryan C. Gordon <icculus@icculus.org>
parents: 564
diff changeset
   481
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   482
        else if (token == TOKEN_PP_ERROR)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   483
        {
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   484
            handle_pp_error(ctx);
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   485
            continue;  // will return at top of loop.
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   486
        } // else if
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   487
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   488
        *_token = token;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   489
        *_len = (unsigned int) (state->source - state->token);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
        return state->token;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   491
    } // while
561
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   492
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   493
    assert(0 && "shouldn't hit this code");
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   494
    *_token = TOKEN_UNKNOWN;
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   495
    *_len = 0;
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   496
    return NULL;
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   497
} // _preprocessor_nexttoken
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   498
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   499
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   500
const char *preprocessor_nexttoken(Preprocessor *ctx, unsigned int *len,
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   501
                                   Token *token)
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   502
{
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   503
    const char *retval = _preprocessor_nexttoken(ctx, len, token);
587
202354e004fc Unified some cut-and-paste code.
Ryan C. Gordon <icculus@icculus.org>
parents: 586
diff changeset
   504
    print_debug_token(retval, *len, *token);
561
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
   505
    return retval;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   506
} // preprocessor_nexttoken
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   507
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   508
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   509
const char *preprocessor_sourcepos(Preprocessor *_ctx, unsigned int *pos)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   510
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   511
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   512
    if (ctx->include_stack == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   513
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   514
        *pos = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   515
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   516
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   517
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   518
    *pos = ctx->include_stack->line;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   519
    return ctx->include_stack->filename;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   520
} // preprocessor_sourcepos
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   521
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   522
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   523
// public API...
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   524
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   525
static const MOJOSHADER_preprocessData out_of_mem_data_preprocessor = {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   526
    1, &MOJOSHADER_out_of_mem_error, 0, 0, 0, 0, 0
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   527
};
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   528
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   529
#define BUFFER_LEN (64 * 1024)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
typedef struct BufferList
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   531
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   532
    char buffer[BUFFER_LEN];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   533
    size_t bytes;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   534
    struct BufferList *next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   535
} BufferList;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   536
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   537
typedef struct Buffer
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   538
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   539
    size_t total_bytes;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   540
    BufferList head;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   541
    BufferList *tail;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   542
} Buffer;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   543
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   544
static void buffer_init(Buffer *buffer)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   545
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   546
    buffer->total_bytes = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   547
    buffer->head.bytes = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   548
    buffer->head.next = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   549
    buffer->tail = &buffer->head;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   550
} // buffer_init
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   552
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   553
static int add_to_buffer(Buffer *buffer, const char *data,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   554
                         size_t len, MOJOSHADER_malloc m, void *d)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   555
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   556
    buffer->total_bytes += len;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   557
    while (len > 0)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   558
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   559
        const size_t avail = BUFFER_LEN - buffer->tail->bytes;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   560
        const size_t cpy = (avail > len) ? len : avail;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   561
        memcpy(buffer->tail->buffer + buffer->tail->bytes, data, cpy);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   562
        len -= cpy;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   563
        data += cpy;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   564
        buffer->tail->bytes += cpy;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   565
        assert(buffer->tail->bytes <= BUFFER_LEN);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   566
        if (buffer->tail->bytes == BUFFER_LEN)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   568
            BufferList *item = (BufferList *) m(sizeof (BufferList), d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   569
            if (item == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   570
                return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   571
            item->bytes = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
            item->next = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   573
            buffer->tail->next = item;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   574
            buffer->tail = item;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   575
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   576
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   577
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   578
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   579
} // add_to_buffer
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   580
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   581
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   582
static int indent_buffer(Buffer *buffer, int n, int newline,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   583
                         MOJOSHADER_malloc m, void *d)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   584
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   585
    static char spaces[4] = { ' ', ' ', ' ', ' ' };
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   586
    if (newline)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   587
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   588
        while (n--)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   589
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   590
            if (!add_to_buffer(buffer, spaces, sizeof (spaces), m, d))
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   591
                return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   592
        } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   593
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   594
    else
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   595
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   596
        if (!add_to_buffer(buffer, spaces, 1, m, d))
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   597
            return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   598
    } // else
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   599
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   600
} // indent_buffer
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   601
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   602
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   603
static char *flatten_buffer(Buffer *buffer, MOJOSHADER_malloc m, void *d)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   604
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   605
    char *retval = m(buffer->total_bytes + 1, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   606
    if (retval == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   607
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   608
    BufferList *item = &buffer->head;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   609
    char *ptr = retval;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   610
    while (item != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   611
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   612
        BufferList *next = item->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   613
        memcpy(ptr, item->buffer, item->bytes);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   614
        ptr += item->bytes;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   615
        item = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   616
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
    *ptr = '\0';
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   618
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   619
    assert(ptr == (retval + buffer->total_bytes));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
    return retval;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
} // flatten_buffer
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
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
static void free_buffer(Buffer *buffer, MOJOSHADER_free f, void *d)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
    // head is statically allocated, so start with head.next...
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   627
    BufferList *item = buffer->head.next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
    while (item != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
        BufferList *next = item->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
        f(item, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
        item = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   634
    buffer_init(buffer);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   635
} // free_buffer
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   636
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   637
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   638
// !!! FIXME: cut and paste.
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   639
static void free_error_list(ErrorList *item, MOJOSHADER_free f, void *d)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   640
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   641
    while (item != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   642
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   643
        ErrorList *next = item->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   644
        f((void *) item->error.error, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   645
        f((void *) item->error.filename, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   646
        f(item, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   647
        item = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   648
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   649
} // free_error_list
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   650
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   651
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   652
// !!! FIXME: cut and paste.
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   653
static MOJOSHADER_error *build_errors(ErrorList **errors, const int count,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   654
                         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
   655
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   656
    int total = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   657
    MOJOSHADER_error *retval = (MOJOSHADER_error *)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   658
                                m(sizeof (MOJOSHADER_error) * count, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   659
    if (retval == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   660
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   661
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   662
    ErrorList *item = *errors;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   663
    while (item != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   664
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   665
        ErrorList *next = item->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   666
        // reuse the string allocations
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   667
        memcpy(&retval[total], &item->error, sizeof (MOJOSHADER_error));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   668
        f(item, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   669
        item = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   670
        total++;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   671
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   672
    *errors = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   673
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   674
    assert(total == count);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   675
    return retval;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   676
} // build_errors
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   677
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   678
578
6c8f73c845e7 Allow app to specify a base filename for error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 568
diff changeset
   679
const MOJOSHADER_preprocessData *MOJOSHADER_preprocess(const char *filename,
6c8f73c845e7 Allow app to specify a base filename for error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 568
diff changeset
   680
                             const char *source, unsigned int sourcelen,
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   681
                             const MOJOSHADER_preprocessorDefine **defines,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   682
                             unsigned int define_count,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   683
                             MOJOSHADER_includeOpen include_open,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   684
                             MOJOSHADER_includeClose include_close,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   685
                             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
   686
{
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   687
    #ifdef _WINDOWS
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   688
    static const char endline[] = { '\r', '\n' };
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   689
    #else
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   690
    static const char endline[] = { '\n' };
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   691
    #endif
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   692
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   693
    ErrorList *errors = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   694
    int error_count = 0;
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
    if (m == NULL) m = MOJOSHADER_internal_malloc;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   697
    if (f == NULL) f = MOJOSHADER_internal_free;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   698
582
637dcfff28d8 Added another FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 578
diff changeset
   699
// !!! FIXME
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   700
include_open = (MOJOSHADER_includeOpen) 0x1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   701
include_close = (MOJOSHADER_includeClose) 0x1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   702
578
6c8f73c845e7 Allow app to specify a base filename for error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 568
diff changeset
   703
    Preprocessor *pp = preprocessor_start(filename, source, sourcelen,
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   704
                                          include_open, include_close,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   705
                                          defines, define_count, m, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   706
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   707
    if (pp == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   708
        return &out_of_mem_data_preprocessor;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   709
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   710
    Token token = TOKEN_UNKNOWN;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   711
    const char *tokstr = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   712
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   713
    Buffer buffer;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   714
    buffer_init(&buffer);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   715
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   716
    int nl = 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   717
    int indent = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   718
    unsigned int len = 0;
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   719
    int out_of_memory = 0;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   720
    while ((tokstr = preprocessor_nexttoken(pp, &len, &token)) != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   721
    {
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   722
        int isnewline = 0;
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   723
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   724
        assert(token != TOKEN_EOI);
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   725
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   726
        if (!out_of_memory)
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   727
            out_of_memory = preprocessor_outofmemory(pp);
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   728
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   729
        // Microsoft's preprocessor is weird.
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   730
        // It ignores newlines, and then inserts its own around certain
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   731
        //  tokens. For example, after a semicolon. This allows HLSL code to
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   732
        //  be mostly readable, instead of a stream of tokens.
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   733
        if (token == ((Token) '\n'))
583
9c966b751fd6 Fixed preprocessor indent and endline output.
Ryan C. Gordon <icculus@icculus.org>
parents: 582
diff changeset
   734
            isnewline = nl;  // this doesn't actually care about '\n' ...
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   735
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   736
        else if ( (token == ((Token) '}')) || (token == ((Token) ';')) )
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   737
        {
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   738
            if (!out_of_memory)
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   739
            {
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   740
                if ( (token == ((Token) '}')) && (indent > 0) )
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   741
                    indent--;
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   742
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   743
                out_of_memory =
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   744
                    (!indent_buffer(&buffer, indent, nl, m, d)) ||
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   745
                    (!add_to_buffer(&buffer, tokstr, len, m, d)) ||
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   746
                    (!add_to_buffer(&buffer, endline, sizeof (endline), m, d));
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   747
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   748
                isnewline = 1;
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   749
            } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   750
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   751
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   752
        else if (token == ((Token) '{'))
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   753
        {
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   754
            if (!out_of_memory)
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   755
            {
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   756
                out_of_memory =
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   757
                    (!add_to_buffer(&buffer,endline,sizeof (endline),m,d)) ||
583
9c966b751fd6 Fixed preprocessor indent and endline output.
Ryan C. Gordon <icculus@icculus.org>
parents: 582
diff changeset
   758
                    (!indent_buffer(&buffer, indent, 1, m, d)) ||
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   759
                    (!add_to_buffer(&buffer, "{", 1, m, d)) ||
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   760
                    (!add_to_buffer(&buffer,endline,sizeof (endline),m,d));
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   761
                indent++;
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   762
                isnewline = 1;
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   763
            } // if
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   764
        } // else if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   765
598
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   766
        else if (token == TOKEN_PREPROCESSING_ERROR)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   767
        {
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   768
            if (!out_of_memory)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   769
            {
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   770
                ErrorList *error = (ErrorList *) m(sizeof (ErrorList), d);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   771
                unsigned int pos = 0;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   772
                char *fname = NULL;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   773
                const char *str = preprocessor_sourcepos(pp, &pos);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   774
                if (str != NULL)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   775
                {
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   776
                    fname = (char *) m(strlen(str) + 1, d);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   777
                    if (fname != NULL)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   778
                        strcpy(fname, str);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   779
                } // if
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   780
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   781
                // !!! FIXME: cut and paste with other error handlers.
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   782
                char *errstr = (char *) m(len + 1, d);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   783
                if (errstr != NULL)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   784
                    strcpy(errstr, tokstr);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   785
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   786
                out_of_memory = ((!error) || ((!fname) && (str)) || (!errstr));
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   787
                if (out_of_memory)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   788
                {
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   789
                    if (errstr) f(errstr, d);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   790
                    if (fname) f(fname, d);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   791
                    if (error) f(error, d);
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   792
                } // if
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   793
                else
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   794
                {
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   795
                    error->error.error = errstr;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   796
                    error->error.filename = fname;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   797
                    error->error.error_position = pos;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   798
                    error->next = NULL;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   799
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   800
                    ErrorList *prev = NULL;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   801
                    ErrorList *item = errors;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   802
                    while (item != NULL)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   803
                    {
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   804
                        prev = item;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   805
                        item = item->next;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   806
                    } // while
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   807
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   808
                    if (prev == NULL)
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   809
                        errors = error;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   810
                    else
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   811
                        prev->next = error;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   812
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   813
                    error_count++;
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   814
                } // else
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   815
            } // if
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   816
        } // else if
decc32dc03a7 Removed preprocessor_error(). Returns a Token to specify an error state now.
Ryan C. Gordon <icculus@icculus.org>
parents: 597
diff changeset
   817
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   818
        else
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   819
        {
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   820
            if (!out_of_memory)
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   821
            {
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   822
                out_of_memory = (!indent_buffer(&buffer, indent, nl, m, d)) ||
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   823
                                (!add_to_buffer(&buffer, tokstr, len, m, d));
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   824
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   825
            } // if
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   826
        } // else
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   827
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   828
        nl = isnewline;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   829
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   830
        if (out_of_memory)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   831
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   832
            preprocessor_end(pp);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   833
            free_buffer(&buffer, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   834
            free_error_list(errors, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   835
            return &out_of_mem_data_preprocessor;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   836
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   837
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   838
    
564
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   839
    assert((token == TOKEN_EOI) || (out_of_memory));
c669568326fb Reworked preprocessor newline management.
Ryan C. Gordon <icculus@icculus.org>
parents: 561
diff changeset
   840
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   841
    preprocessor_end(pp);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   842
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   843
    const size_t total_bytes = buffer.total_bytes;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   844
    char *output = flatten_buffer(&buffer, m, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   845
    free_buffer(&buffer, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   846
    if (output == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   847
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   848
        free_error_list(errors, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   849
        return &out_of_mem_data_preprocessor;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   850
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   851
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   852
    MOJOSHADER_preprocessData *retval = (MOJOSHADER_preprocessData *)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   853
                                    m(sizeof (MOJOSHADER_preprocessData), d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   854
    if (retval == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   855
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   856
        free_error_list(errors, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   857
        f(output, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   858
        return &out_of_mem_data_preprocessor;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   859
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   860
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   861
    retval->errors = build_errors(&errors, error_count, m, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   862
    if (retval->errors == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   863
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   864
        free_error_list(errors, f, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   865
        f(retval, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   866
        f(output, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   867
        return &out_of_mem_data_preprocessor;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   868
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   869
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   870
    retval->error_count = error_count;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   871
    retval->output = output;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   872
    retval->output_len = total_bytes;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   873
    retval->malloc = m;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   874
    retval->free = f;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   875
    retval->malloc_data = d;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   876
    return retval;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   877
} // MOJOSHADER_preprocess
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   878
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   879
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   880
void MOJOSHADER_freePreprocessData(const MOJOSHADER_preprocessData *_data)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   881
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   882
    MOJOSHADER_preprocessData *data = (MOJOSHADER_preprocessData *) _data;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   883
    if ((data == NULL) || (data == &out_of_mem_data_preprocessor))
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   884
        return;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   885
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   886
    MOJOSHADER_free f = (data->free == NULL) ? MOJOSHADER_internal_free : data->free;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   887
    void *d = data->malloc_data;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   888
    int i;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   889
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   890
    if (data->output != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   891
        f((void *) data->output, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   892
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   893
    if (data->errors != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   894
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   895
        for (i = 0; i < data->error_count; i++)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   896
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   897
            if (data->errors[i].error != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   898
                f((void *) data->errors[i].error, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   899
            if (data->errors[i].filename != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   900
                f((void *) data->errors[i].filename, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   901
        } // for
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   902
        f(data->errors, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   903
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   904
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   905
    f(data, d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   906
} // MOJOSHADER_freePreprocessData
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   907
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   908
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   909
// end of mojoshader_preprocessor.c ...
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   910