mojoshader_preprocessor.c
author Ryan C. Gordon <icculus@icculus.org>
Tue, 17 Feb 2009 08:42:25 -0500
changeset 645 9a1f42e8f3f7
parent 644 ea8b50a4edaf
child 646 60911555980a
permissions -rw-r--r--
Added a FIXME.
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/**
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 * MojoShader; generate shader programs from bytecode of compiled
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 *  Direct3D shaders.
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 *
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 * Please see the file LICENSE.txt in the source's root directory.
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 *
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 *  This file written by Ryan C. Gordon.
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 */
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#define __MOJOSHADER_INTERNAL__ 1
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#include "mojoshader_internal.h"
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#if DEBUG_PREPROCESSOR
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    #define print_debug_token(token, len, val) \
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        MOJOSHADER_print_debug_token("PREPROCESSOR", token, len, val)
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#else
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    #define print_debug_token(token, len, val)
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#endif
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#if DEBUG_LEXER
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static Token debug_preprocessor_internal_lexer(IncludeState *s)
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{
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    const Token retval = preprocessor_internal_lexer(s);
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    MOJOSHADER_print_debug_token("LEXER", s->token,
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                                 (unsigned int) (s->source - s->token),
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                                 retval);
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    return retval;
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} // debug_preprocessor_internal_lexer
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#define preprocessor_internal_lexer(s) debug_preprocessor_internal_lexer(s)
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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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// Simple linked list to cache source filenames, so we don't have to copy
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//  the same string over and over for each opcode.
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typedef struct FilenameCache
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{
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    char *filename;
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    struct FilenameCache *next;
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} FilenameCache;
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typedef struct Context
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{
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    int isfail;
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    int out_of_memory;
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    char failstr[256];
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    Conditional *conditional_pool;
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    IncludeState *include_stack;
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    DefineHash *define_hashtable[256];
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    FilenameCache *filename_cache;
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    MOJOSHADER_includeOpen open_callback;
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    MOJOSHADER_includeClose close_callback;
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    MOJOSHADER_malloc malloc;
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    MOJOSHADER_free free;
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    void *malloc_data;
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} Context;
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// Convenience functions for allocators...
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static inline void out_of_memory(Context *ctx)
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{
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    ctx->out_of_memory = 1;
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} // out_of_memory
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static inline void *Malloc(Context *ctx, const size_t len)
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{
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    void *retval = ctx->malloc((int) len, ctx->malloc_data);
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    if (retval == NULL)
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        out_of_memory(ctx);
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    return retval;
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} // Malloc
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static inline void Free(Context *ctx, void *ptr)
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{
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    if (ptr != NULL)  // check for NULL in case of dumb free() impl.
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        ctx->free(ptr, ctx->malloc_data);
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} // Free
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static inline char *StrDup(Context *ctx, const char *str)
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{
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    char *retval = (char *) Malloc(ctx, strlen(str) + 1);
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    if (retval != NULL)
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        strcpy(retval, str);
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    return retval;
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} // StrDup
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static void failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
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static void failf(Context *ctx, const char *fmt, ...)
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{
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    ctx->isfail = 1;
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    va_list ap;
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    va_start(ap, fmt);
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    vsnprintf(ctx->failstr, sizeof (ctx->failstr), fmt, ap);
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    va_end(ap);
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} // failf
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static inline void fail(Context *ctx, const char *reason)
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{
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    failf(ctx, "%s", reason);
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} // fail
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#if DEBUG_TOKENIZER
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void MOJOSHADER_print_debug_token(const char *subsystem, const char *token,
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                                  const unsigned int tokenlen,
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                                  const Token tokenval)
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{
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    printf("%s TOKEN: \"", subsystem);
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    unsigned int i;
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    for (i = 0; i < tokenlen; i++)
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    {
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        if (token[i] == '\n')
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            printf("\\n");
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        else if (token[i] == '\\')
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            printf("\\\\");
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        else
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            printf("%c", token[i]);
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    } // for
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    printf("\" (");
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    switch (tokenval)
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    {
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        #define TOKENCASE(x) case x: printf("%s", #x); break
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        TOKENCASE(TOKEN_UNKNOWN);
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        TOKENCASE(TOKEN_IDENTIFIER);
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        TOKENCASE(TOKEN_INT_LITERAL);
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        TOKENCASE(TOKEN_FLOAT_LITERAL);
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        TOKENCASE(TOKEN_STRING_LITERAL);
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        TOKENCASE(TOKEN_ADDASSIGN);
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        TOKENCASE(TOKEN_SUBASSIGN);
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        TOKENCASE(TOKEN_MULTASSIGN);
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        TOKENCASE(TOKEN_DIVASSIGN);
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        TOKENCASE(TOKEN_MODASSIGN);
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        TOKENCASE(TOKEN_XORASSIGN);
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        TOKENCASE(TOKEN_ANDASSIGN);
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        TOKENCASE(TOKEN_ORASSIGN);
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        TOKENCASE(TOKEN_INCREMENT);
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        TOKENCASE(TOKEN_DECREMENT);
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        TOKENCASE(TOKEN_RSHIFT);
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        TOKENCASE(TOKEN_LSHIFT);
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        TOKENCASE(TOKEN_ANDAND);
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        TOKENCASE(TOKEN_OROR);
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        TOKENCASE(TOKEN_LEQ);
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        TOKENCASE(TOKEN_GEQ);
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        TOKENCASE(TOKEN_EQL);
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        TOKENCASE(TOKEN_NEQ);
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        TOKENCASE(TOKEN_HASHHASH);
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        TOKENCASE(TOKEN_PP_INCLUDE);
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        TOKENCASE(TOKEN_PP_LINE);
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        TOKENCASE(TOKEN_PP_DEFINE);
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        TOKENCASE(TOKEN_PP_UNDEF);
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        TOKENCASE(TOKEN_PP_IF);
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        TOKENCASE(TOKEN_PP_IFDEF);
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        TOKENCASE(TOKEN_PP_IFNDEF);
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        TOKENCASE(TOKEN_PP_ELSE);
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        TOKENCASE(TOKEN_PP_ELIF);
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        TOKENCASE(TOKEN_PP_ENDIF);
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        TOKENCASE(TOKEN_PP_ERROR);
604
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        TOKENCASE(TOKEN_INCOMPLETE_COMMENT);
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        TOKENCASE(TOKEN_BAD_CHARS);
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        TOKENCASE(TOKEN_EOI);
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        TOKENCASE(TOKEN_PREPROCESSING_ERROR);
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        #undef TOKENCASE
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        case ((Token) '\n'):
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            printf("'\\n'");
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            break;
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629
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        case ((Token) '\\'):
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            printf("'\\\\'");
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            break;
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587
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        default:
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            assert(((int)tokenval) < 256);
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            printf("'%c'", (char) tokenval);
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            break;
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    } // switch
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    printf(")\n");
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} // MOJOSHADER_print_debug_token
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#endif
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611
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#if !MOJOSHADER_FORCE_INCLUDE_CALLBACKS
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// !!! FIXME: most of these _MSC_VER should probably be _WINDOWS?
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#ifdef _MSC_VER
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#define WIN32_LEAN_AND_MEAN 1
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#include <windows.h>  // GL headers need this for WINGDIAPI definition.
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#else
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#endif
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int MOJOSHADER_internal_include_open(MOJOSHADER_includeType inctype,
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                                     const char *fname, const char *parent,
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                                     const char **outdata,
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                                     unsigned int *outbytes,
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                                     MOJOSHADER_malloc m, MOJOSHADER_free f,
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                                     void *d)
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{
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#ifdef _MSC_VER
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#error Write me.
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#else
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    struct stat statbuf;
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    if (stat(fname, &statbuf) == -1)
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        return 0;
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    char *data = (char *) m(statbuf.st_size, d);
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    if (data == NULL)
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        return 0;
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    const int fd = open(fname, O_RDONLY);
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    if (fd == -1)
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    {
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        f(data, d);
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        return 0;
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    } // if
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    if (read(fd, data, statbuf.st_size) != statbuf.st_size)
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    {
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        f(data, d);
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        close(fd);
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        return 0;
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   228
    } // if
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    close(fd);
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    *outdata = data;
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    *outbytes = (unsigned int) statbuf.st_size;
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    return 1;
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   233
#endif
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   234
} // MOJOSHADER_internal_include_open
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void MOJOSHADER_internal_include_close(const char *data, MOJOSHADER_malloc m,
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                                       MOJOSHADER_free f, void *d)
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{
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   240
    f((void *) data, d);
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   241
} // MOJOSHADER_internal_include_close
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#endif  // !MOJOSHADER_FORCE_INCLUDE_CALLBACKS
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632
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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// data buffer stuff...
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#define BUFFER_LEN (64 * 1024)
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typedef struct BufferList
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{
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    char buffer[BUFFER_LEN];
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    size_t bytes;
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    struct BufferList *next;
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} BufferList;
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typedef struct Buffer
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{
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    size_t total_bytes;
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    BufferList head;
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    BufferList *tail;
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} Buffer;
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633
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static void init_buffer(Buffer *buffer)
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{
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    buffer->total_bytes = 0;
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    buffer->head.bytes = 0;
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    buffer->head.next = NULL;
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   267
    buffer->tail = &buffer->head;
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   268
} // init_buffer
632
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static int add_to_buffer(Buffer *buffer, const char *data,
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                         size_t len, MOJOSHADER_malloc m, void *d)
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{
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    buffer->total_bytes += len;
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   275
    while (len > 0)
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    {
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        const size_t avail = BUFFER_LEN - buffer->tail->bytes;
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        const size_t cpy = (avail > len) ? len : avail;
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        memcpy(buffer->tail->buffer + buffer->tail->bytes, data, cpy);
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        len -= cpy;
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   281
        data += cpy;
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        buffer->tail->bytes += cpy;
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   283
        assert(buffer->tail->bytes <= BUFFER_LEN);
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        if (buffer->tail->bytes == BUFFER_LEN)
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   285
        {
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   286
            BufferList *item = (BufferList *) m(sizeof (BufferList), d);
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   287
            if (item == NULL)
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   288
                return 0;
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   289
            item->bytes = 0;
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   290
            item->next = NULL;
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   291
            buffer->tail->next = item;
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   292
            buffer->tail = item;
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   293
        } // if
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   294
    } // while
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   295
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   296
    return 1;
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diff changeset
   297
} // add_to_buffer
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   298
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   299
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   300
static char *flatten_buffer(Buffer *buffer, MOJOSHADER_malloc m, void *d)
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   301
{
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   302
    char *retval = m(buffer->total_bytes + 1, d);
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   303
    if (retval == NULL)
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diff changeset
   304
        return NULL;
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diff changeset
   305
    BufferList *item = &buffer->head;
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diff changeset
   306
    char *ptr = retval;
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diff changeset
   307
    while (item != NULL)
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diff changeset
   308
    {
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diff changeset
   309
        BufferList *next = item->next;
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diff changeset
   310
        memcpy(ptr, item->buffer, item->bytes);
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diff changeset
   311
        ptr += item->bytes;
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diff changeset
   312
        item = next;
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diff changeset
   313
    } // while
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diff changeset
   314
    *ptr = '\0';
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diff changeset
   315
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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diff changeset
   316
    assert(ptr == (retval + buffer->total_bytes));
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diff changeset
   317
    return retval;
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diff changeset
   318
} // flatten_buffer
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diff changeset
   319
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diff changeset
   320
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
Ryan C. Gordon <icculus@icculus.org>
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   321
static void free_buffer(Buffer *buffer, MOJOSHADER_free f, void *d)
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diff changeset
   322
{
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diff changeset
   323
    // head is statically allocated, so start with head.next...
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diff changeset
   324
    BufferList *item = buffer->head.next;
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diff changeset
   325
    while (item != NULL)
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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parents: 631
diff changeset
   326
    {
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diff changeset
   327
        BufferList *next = item->next;
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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diff changeset
   328
        f(item, d);
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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diff changeset
   329
        item = next;
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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diff changeset
   330
    } // while
633
9cd2376b9aa2 Renamed buffer_init() to init_buffer() to match rest of function names.
Ryan C. Gordon <icculus@icculus.org>
parents: 632
diff changeset
   331
    init_buffer(buffer);
632
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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diff changeset
   332
} // free_buffer
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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diff changeset
   333
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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diff changeset
   334
a5f63a10ed91 Moved Buffer stuff higher up, so internal routines can use it.
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   335
620
1c4cf996004e Initial work on preprocessor conditionals.
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diff changeset
   336
// Conditional pool stuff...
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diff changeset
   337
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diff changeset
   338
static void free_conditional_pool(Context *ctx)
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diff changeset
   339
{
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diff changeset
   340
    Conditional *item = ctx->conditional_pool;
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   341
    while (item != NULL)
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diff changeset
   342
    {
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diff changeset
   343
        Conditional *next = item->next;
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diff changeset
   344
        Free(ctx, item);
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diff changeset
   345
        item = next;
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diff changeset
   346
    } // while
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parents: 618
diff changeset
   347
} // free_conditional_pool
1c4cf996004e Initial work on preprocessor conditionals.
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diff changeset
   348
1c4cf996004e Initial work on preprocessor conditionals.
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diff changeset
   349
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   350
static Conditional *get_conditional(Context *ctx)
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Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   351
{
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parents: 618
diff changeset
   352
    Conditional *retval = ctx->conditional_pool;
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Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   353
    if (retval != NULL)
1c4cf996004e Initial work on preprocessor conditionals.
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parents: 618
diff changeset
   354
        ctx->conditional_pool = retval->next;
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Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   355
    else
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   356
        retval = (Conditional *) Malloc(ctx, sizeof (Conditional));
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diff changeset
   357
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   358
    if (retval != NULL)
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   359
        memset(retval, '\0', sizeof (Conditional));
1c4cf996004e Initial work on preprocessor conditionals.
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parents: 618
diff changeset
   360
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   361
    return retval;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   362
} // get_conditional
1c4cf996004e Initial work on preprocessor conditionals.
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parents: 618
diff changeset
   363
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   364
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   365
static void put_conditionals(Context *ctx, Conditional *item)
1c4cf996004e Initial work on preprocessor conditionals.
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parents: 618
diff changeset
   366
{
1c4cf996004e Initial work on preprocessor conditionals.
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parents: 618
diff changeset
   367
    while (item != NULL)
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   368
    {
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   369
        Conditional *next = item->next;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   370
        item->next = ctx->conditional_pool;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   371
        ctx->conditional_pool = item;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   372
        item = next;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   373
    } // while
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   374
} // put_conditionals
1c4cf996004e Initial work on preprocessor conditionals.
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parents: 618
diff changeset
   375
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   376
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   377
// Preprocessor define hashtable stuff...
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
static unsigned char hash_define(const char *sym)
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
    unsigned char retval = 0;
622
59b3003f6494 Fixed logic bug in string loop.
Ryan C. Gordon <icculus@icculus.org>
parents: 621
diff changeset
   382
    while (*sym)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   383
        retval += *(sym++);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   384
    return retval;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
} // hash_define
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
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   388
static int add_define(Context *ctx, const char *sym, const char *val, int copy)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   389
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   390
    char *identifier = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   391
    char *definition = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
    const unsigned char hash = hash_define(sym);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
    DefineHash *bucket = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   395
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   396
        if (strcmp(bucket->define.identifier, sym) == 0)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   397
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   398
            failf(ctx, "'%s' already defined", sym);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
            return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   400
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   401
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   402
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   403
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   404
    bucket = (DefineHash *) Malloc(ctx, sizeof (DefineHash));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   405
    if (bucket == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   406
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   407
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   408
    identifier = (char *) Malloc(ctx, strlen(sym) + 1);
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   409
    if (identifier == NULL)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   410
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   411
        Free(ctx, bucket);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   412
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   413
    } // if
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   414
    strcpy(identifier, sym);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   416
    if (!copy)
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   417
        bucket->define.definition = val;
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   418
    else
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   419
    {
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   420
        definition = (char *) Malloc(ctx, strlen(val) + 1);
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   421
        if (definition == NULL)
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   422
        {
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   423
            Free(ctx, identifier);
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   424
            Free(ctx, bucket);
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   425
            return 0;
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   426
        } // if
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   427
        strcpy(definition, val);
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   428
        bucket->define.definition = definition;
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   429
    } // if
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   430
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   431
    bucket->define.identifier = identifier;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   432
    bucket->next = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   433
    ctx->define_hashtable[hash] = bucket;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   434
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   435
} // add_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   437
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   438
static int remove_define(Context *ctx, const char *sym)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   440
    const unsigned char hash = hash_define(sym);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   441
    DefineHash *bucket = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   442
    DefineHash *prev = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   443
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   444
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   445
        if (strcmp(bucket->define.identifier, sym) == 0)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   446
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   447
            if (prev == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
                ctx->define_hashtable[hash] = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
            else
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   450
                prev->next = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   451
            Free(ctx, (void *) bucket->define.identifier);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   452
            Free(ctx, (void *) bucket->define.definition);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   453
            Free(ctx, bucket);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   454
            return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   455
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   456
        prev = bucket;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   457
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   458
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   459
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   460
    return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   461
} // remove_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   462
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   463
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   464
static const char *find_define(Context *ctx, const char *sym)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   466
    const unsigned char hash = hash_define(sym);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
    DefineHash *bucket = ctx->define_hashtable[hash];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
    while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   469
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   470
        if (strcmp(bucket->define.identifier, sym) == 0)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
            return bucket->define.definition;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
        bucket = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
    } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
    return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   475
} // find_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   476
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   477
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   478
static void free_all_defines(Context *ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   479
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
    int i;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   481
    for (i = 0; i < STATICARRAYLEN(ctx->define_hashtable); i++)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
        DefineHash *bucket = ctx->define_hashtable[i];
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   484
        ctx->define_hashtable[i] = NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
        while (bucket)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   486
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   487
            DefineHash *next = bucket->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   488
            Free(ctx, (void *) bucket->define.identifier);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   489
            Free(ctx, (void *) bucket->define.definition);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
            Free(ctx, bucket);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   491
            bucket = next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   492
        } // while
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   493
    } // for
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   494
} // find_define
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   495
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   496
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   497
// filename cache stuff...
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   498
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   499
static const char *cache_filename(Context *ctx, const char *fname)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   500
{
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   501
    if (fname == NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   502
        return NULL;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   503
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   504
    // !!! FIXME: this could be optimized into a hash table, but oh well.
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   505
    FilenameCache *item = ctx->filename_cache;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   506
    while (item != NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   507
    {
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   508
        if (strcmp(item->filename, fname) == 0)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   509
            return item->filename;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   510
        item = item->next;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   511
    } // while
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   512
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   513
    // new cache item.
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   514
    item = (FilenameCache *) Malloc(ctx, sizeof (FilenameCache));
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   515
    if (item == NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   516
        return NULL;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   517
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   518
    item->filename = StrDup(ctx, fname);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   519
    if (item->filename == NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   520
    {
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   521
        Free(ctx, item);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   522
        return NULL;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   523
    } // if
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   524
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   525
    item->next = ctx->filename_cache;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   526
    ctx->filename_cache = item;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   527
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   528
    return item->filename;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   529
} // cache_filename
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   530
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   531
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   532
static void free_filename_cache(Context *ctx)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   533
{
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   534
    FilenameCache *item = ctx->filename_cache;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   535
    while (item != NULL)
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   536
    {
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   537
        FilenameCache *next = item->next;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   538
        Free(ctx, item->filename);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   539
        Free(ctx, item);
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   540
        item = next;
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   541
    } // while
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   542
} // free_filename_cache
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   543
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   544
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   545
static int push_source(Context *ctx, const char *fname, const char *source,
640
813a139a4a5a push_source() now specifies a line number.
Ryan C. Gordon <icculus@icculus.org>
parents: 639
diff changeset
   546
                       unsigned int srclen, unsigned int linenum, int included)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   547
{
645
9a1f42e8f3f7 Added a FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 644
diff changeset
   548
    // !!! FIXME: keep a pool of these.
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   549
    IncludeState *state = (IncludeState *) Malloc(ctx, sizeof (IncludeState));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   550
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   552
    memset(state, '\0', sizeof (IncludeState));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   553
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   554
    if (fname != NULL)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   555
    {
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   556
        state->filename = cache_filename(ctx, fname);
560
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   557
        if (state->filename == NULL)
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   558
        {
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   559
            Free(ctx, state);
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   560
            return 0;
225d579ae929 Handle NULL file names.
Ryan C. Gordon <icculus@icculus.org>
parents: 559
diff changeset
   561
        } // if
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   562
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   563
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   564
    state->included = included;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   565
    state->source_base = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   566
    state->source = source;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
    state->token = source;
642
624ab8696f9b Enormous amount of tapdancing to handle EOI better in the lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 641
diff changeset
   568
    state->orig_length = srclen;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   569
    state->bytes_left = srclen;
640
813a139a4a5a push_source() now specifies a line number.
Ryan C. Gordon <icculus@icculus.org>
parents: 639
diff changeset
   570
    state->line = linenum;
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   571
    state->next = ctx->include_stack;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   573
    ctx->include_stack = state;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   574
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   575
    return 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   576
} // push_source
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
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   579
static void pop_source(Context *ctx)
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
    IncludeState *state = ctx->include_stack;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   582
    if (state == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   583
        return;
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
    if (state->included)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   586
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   587
        ctx->close_callback(state->source_base, ctx->malloc,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   588
                            ctx->free, ctx->malloc_data);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   589
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   590
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   591
    // state->filename is a pointer to the filename cache; don't free it here!
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   592
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   593
    put_conditionals(ctx, state->conditional_stack);
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   594
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   595
    ctx->include_stack = state->next;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   596
    Free(ctx, state);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   597
} // pop_source
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   598
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   599
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   600
Preprocessor *preprocessor_start(const char *fname, const char *source,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   601
                            unsigned int sourcelen,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   602
                            MOJOSHADER_includeOpen open_callback,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   603
                            MOJOSHADER_includeClose close_callback,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   604
                            const MOJOSHADER_preprocessorDefine **defines,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   605
                            unsigned int define_count,
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   606
                            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
   607
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   608
    int okay = 1;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   609
    int i = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   610
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   611
    // 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
   612
    assert(m != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   613
    assert(f != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   614
    assert(open_callback != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   615
    assert(close_callback != NULL);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   616
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
    Context *ctx = (Context *) m(sizeof (Context), d);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   618
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   619
        return 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
    memset(ctx, '\0', sizeof (Context));
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
    ctx->malloc = m;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   623
    ctx->free = f;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
    ctx->malloc_data = d;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
    ctx->open_callback = open_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
    ctx->close_callback = close_callback;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   627
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
    for (i = 0; i < define_count; i++)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
    {
637
2e6202cde135 add_define() can take a string we allocated elsewhere, to avoid extra StrDup().
Ryan C. Gordon <icculus@icculus.org>
parents: 636
diff changeset
   630
        if (!add_define(ctx, defines[i]->identifier, defines[i]->definition, 1))
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
        {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
            okay = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
            break;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   634
        } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   635
    } // for
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   636
640
813a139a4a5a push_source() now specifies a line number.
Ryan C. Gordon <icculus@icculus.org>
parents: 639
diff changeset
   637
    if ((okay) && (!push_source(ctx, fname, source, sourcelen, 1, 0)))
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   638
        okay = 0;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   639
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   640
    if (!okay)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   641
    {
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   642
        preprocessor_end((Preprocessor *) ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   643
        return NULL;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   644
    } // if
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   645
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   646
    return (Preprocessor *) ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   647
} // preprocessor_start
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   648
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   649
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   650
void preprocessor_end(Preprocessor *_ctx)
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
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   653
    if (ctx == NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   654
        return;
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
    while (ctx->include_stack != NULL)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   657
        pop_source(ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   658
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   659
    free_all_defines(ctx);
612
72ccfe69eaf1 Moved filename caching into the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 611
diff changeset
   660
    free_filename_cache(ctx);
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
   661
    free_conditional_pool(ctx);
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   662
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   663
    Free(ctx, ctx);
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   664
} // preprocessor_end
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   665
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   666
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   667
int preprocessor_outofmemory(Preprocessor *_ctx)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   668
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   669
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   670
    return ctx->out_of_memory;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   671
} // preprocessor_outofmemory
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   672
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   673
638
e910619c61f4 Added a FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 637
diff changeset
   674
// !!! FIXME: parsing fails on preprocessor directives should skip rest of line.
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   675
static int require_newline(IncludeState *state)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   676
{
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   677
    const char *source = state->source;
634
b7fd8aa02bf4 Fix state when rewinding stream.
Ryan C. Gordon <icculus@icculus.org>
parents: 631
diff changeset
   678
    const unsigned int bytes_left = state->bytes_left;
626
95d97e613112 Fixed line numbers when a preprocessor directive fails.
Ryan C. Gordon <icculus@icculus.org>
parents: 625
diff changeset
   679
    const unsigned int linenum = state->line;
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   680
    const Token token = preprocessor_internal_lexer(state);
626
95d97e613112 Fixed line numbers when a preprocessor directive fails.
Ryan C. Gordon <icculus@icculus.org>
parents: 625
diff changeset
   681
    state->source = source;  // rewind no matter what.
634
b7fd8aa02bf4 Fix state when rewinding stream.
Ryan C. Gordon <icculus@icculus.org>
parents: 631
diff changeset
   682
    state->bytes_left = bytes_left;
626
95d97e613112 Fixed line numbers when a preprocessor directive fails.
Ryan C. Gordon <icculus@icculus.org>
parents: 625
diff changeset
   683
    state->line = linenum;
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   684
    if (token == TOKEN_INCOMPLETE_COMMENT)
626
95d97e613112 Fixed line numbers when a preprocessor directive fails.
Ryan C. Gordon <icculus@icculus.org>
parents: 625
diff changeset
   685
        return 1; // call it an eol.
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   686
    return ( (token == ((Token) '\n')) || (token == TOKEN_EOI) );
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   687
} // require_newline
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   688
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   689
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   690
static void handle_pp_include(Context *ctx)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   691
{
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   692
    IncludeState *state = ctx->include_stack;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   693
    Token token = preprocessor_internal_lexer(state);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   694
    MOJOSHADER_includeType incltype;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   695
    char *filename = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   696
    int bogus = 0;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   697
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   698
    if (token == TOKEN_STRING_LITERAL)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   699
        incltype = MOJOSHADER_INCLUDETYPE_LOCAL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   700
    else if (token == ((Token) '<'))
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   701
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   702
        incltype = MOJOSHADER_INCLUDETYPE_SYSTEM;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   703
        // can't use lexer, since every byte between the < > pair is
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   704
        //  considered part of the filename.  :/
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   705
        while (!bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   706
        {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   707
            if ( !(bogus = (state->bytes_left == 0)) )
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   708
            {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   709
                const char ch = *state->source;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   710
                if ( !(bogus = ((ch == '\r') || (ch == '\n'))) )
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   711
                {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   712
                    state->source++;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   713
                    state->bytes_left--;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   714
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   715
                    if (ch == '>')
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   716
                        break;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   717
                } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   718
            } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   719
        } // while
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   720
    } // else if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   721
    else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   722
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   723
        bogus = 1;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   724
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   725
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   726
    if (!bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   727
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   728
        state->token++;  // skip '<' or '\"'...
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   729
        const unsigned int len = ((unsigned int) (state->source-state->token));
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   730
        filename = (char *) alloca(len);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   731
        memcpy(filename, state->token, len-1);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   732
        filename[len-1] = '\0';
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   733
        bogus = !require_newline(state);
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   734
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   735
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   736
    if (bogus)
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   737
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   738
        fail(ctx, "Invalid #include directive");
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   739
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   740
    } // else
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   741
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   742
    const char *newdata = NULL;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   743
    unsigned int newbytes = 0;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   744
    if (!ctx->open_callback(incltype, filename, state->source_base,
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   745
                            &newdata, &newbytes, ctx->malloc,
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   746
                            ctx->free, ctx->malloc_data))
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   747
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   748
        fail(ctx, "Include callback failed");  // !!! FIXME: better error
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   749
        return;
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   750
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   751
640
813a139a4a5a push_source() now specifies a line number.
Ryan C. Gordon <icculus@icculus.org>
parents: 639
diff changeset
   752
    if (!push_source(ctx, filename, newdata, newbytes, 1, 1))
611
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   753
    {
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   754
        assert(ctx->out_of_memory);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   755
        ctx->close_callback(newdata, ctx->malloc, ctx->free, ctx->malloc_data);
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   756
    } // if
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   757
} // handle_pp_include
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   758
8c2ee1a97ee1 Implemented #include in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 607
diff changeset
   759
614
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   760
static void handle_pp_line(Context *ctx)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   761
{
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   762
    IncludeState *state = ctx->include_stack;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   763
    char *filename = NULL;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   764
    int linenum = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   765
    int bogus = 0;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   766
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   767
    if (preprocessor_internal_lexer(state) != TOKEN_INT_LITERAL)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   768
        bogus = 1;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   769
    else
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   770
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   771
        const unsigned int len = ((unsigned int) (state->source-state->token));
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   772
        char *buf = (char *) alloca(len+1);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   773
        memcpy(buf, state->token, len);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   774
        buf[len] = '\0';
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   775
        linenum = atoi(buf);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   776
    } // else
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   777
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   778
    if (!bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   779
        bogus = (preprocessor_internal_lexer(state) != TOKEN_STRING_LITERAL);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   780
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   781
    if (!bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   782
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   783
        state->token++;  // skip '\"'...
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   784
        const unsigned int len = ((unsigned int) (state->source-state->token));
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   785
        filename = (char *) alloca(len);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   786
        memcpy(filename, state->token, len-1);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   787
        filename[len-1] = '\0';
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   788
        bogus = !require_newline(state);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   789
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   790
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   791
    if (bogus)
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   792
    {
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   793
        fail(ctx, "Invalid #line directive");
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   794
        return;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   795
    } // if
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   796
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   797
    const char *cached = cache_filename(ctx, filename);
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   798
    assert((cached != NULL) || (ctx->out_of_memory));
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   799
    state->filename = cached;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   800
    state->line = linenum;
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   801
} // handle_pp_line
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   802
0f2f298003ae Implemented #line preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 612
diff changeset
   803
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   804
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
   805
{
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   806
    IncludeState *state = ctx->include_stack;
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   807
    unsigned int bytes_left = 0;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   808
    char *ptr = ctx->failstr;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   809
    int avail = sizeof (ctx->failstr) - 1;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   810
    int cpy = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   811
    int done = 0;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   812
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   813
    const char *prefix = "#error";
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   814
    const size_t prefixlen = strlen(prefix);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   815
    strcpy(ctx->failstr, prefix);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   816
    avail -= prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   817
    ptr += prefixlen;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   818
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   819
    state->report_whitespace = 1;
615
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   820
    const char *source = NULL;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   821
    while (!done)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   822
    {
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   823
        bytes_left = state->bytes_left;
615
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   824
        source = state->source;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   825
        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
   826
        switch (token)
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   827
        {
615
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   828
            case ((Token) '\n'):
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   829
                state->line--;  // make sure error is on the right line.
5467d19b4d7d Fix line numbers in #error preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 614
diff changeset
   830
                // fall through!
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   831
            case TOKEN_INCOMPLETE_COMMENT:
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   832
            case TOKEN_EOI:
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   833
                state->bytes_left = bytes_left;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   834
                state->source = source;  // move back so we catch this later.
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   835
                done = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   836
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   837
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   838
            case ' ':
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   839
                if (!avail)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   840
                    break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   841
                *(ptr++) = ' ';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   842
                avail--;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   843
                break;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   844
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   845
            default:
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   846
                cpy = Min(avail, (int) (state->source-state->token));
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   847
                if (cpy)
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   848
                    memcpy(ptr, state->token, cpy);
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   849
                ptr += cpy;
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   850
                avail -= cpy;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   851
                break;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   852
        } // switch
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   853
    } // while
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   854
635
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   855
    *ptr = '\0';
be3b428802a1 Try to make #error lexing match gcc's.
Ryan C. Gordon <icculus@icculus.org>
parents: 634
diff changeset
   856
    state->report_whitespace = 0;
606
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   857
    ctx->isfail = 1;
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   858
} // handle_pp_error
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   859
63e7a66ac320 Added support for #error directive to the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 605
diff changeset
   860
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   861
static void handle_pp_define(Context *ctx)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   862
{
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   863
    IncludeState *state = ctx->include_stack;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   864
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   865
    if (preprocessor_internal_lexer(state) != TOKEN_IDENTIFIER)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   866
    {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   867
        fail(ctx, "Macro names must be indentifiers");
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   868
        return;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   869
    } // if
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   870
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   871
    MOJOSHADER_malloc m = ctx->malloc;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   872
    void *d = ctx->malloc_data;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   873
    const char space = ' ';
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   874
    unsigned int len = ((unsigned int) (state->source-state->token));
641
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   875
    char *sym = (char *) alloca(len+1);
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   876
    memcpy(sym, state->token, len);
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   877
    sym[len] = '\0';
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   878
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   879
    Buffer buffer;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   880
    init_buffer(&buffer);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   881
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   882
    int done = 0;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   883
    const char *source = NULL;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   884
    unsigned int bytes_left = 0;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   885
    state->report_whitespace = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   886
    while ((!done) && (!ctx->out_of_memory))
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   887
    {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   888
        bytes_left = state->bytes_left;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   889
        source = state->source;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   890
        const Token token = preprocessor_internal_lexer(state);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   891
        switch (token)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   892
        {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   893
            case TOKEN_INCOMPLETE_COMMENT:
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   894
            case TOKEN_EOI:
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   895
                state->bytes_left = bytes_left;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   896
                state->source = source;  // move back so we catch this later.
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   897
                // fall through!
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   898
            case ((Token) '\n'):
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   899
                done = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   900
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   901
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   902
            case ((Token) ' '):  // may not actually point to ' '.
643
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   903
                if (buffer.total_bytes > 0)
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   904
                {
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   905
                    if (!add_to_buffer(&buffer, &space, 1, m, d))
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   906
                        ctx->out_of_memory = 1;
20403ca72f54 Don't add spaces to the start of #define data.
Ryan C. Gordon <icculus@icculus.org>
parents: 642
diff changeset
   907
                } // if
639
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   908
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   909
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   910
            default:
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   911
                len = ((unsigned int) (state->source-state->token));
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   912
                if (!add_to_buffer(&buffer, state->token, len, m, d))
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   913
                    ctx->out_of_memory = 1;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   914
                break;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   915
        } // switch
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   916
    } // while
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   917
    state->report_whitespace = 0;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   918
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   919
    char *definition = NULL;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   920
    if (!ctx->out_of_memory)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   921
    {
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   922
        definition = flatten_buffer(&buffer, m, d);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   923
        ctx->out_of_memory = (definition == NULL);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   924
    } // if
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   925
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   926
    free_buffer(&buffer, ctx->free, d);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   927
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   928
    if (ctx->out_of_memory)
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   929
        return;
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   930
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   931
    assert(done);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   932
    add_define(ctx, sym, definition, 0);
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   933
} // handle_pp_define
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   934
1b549be9ab59 Added #define preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
   935
618
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   936
static void handle_pp_undef(Context *ctx)
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   937
{
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   938
    IncludeState *state = ctx->include_stack;
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   939
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   940
    if (preprocessor_internal_lexer(state) != TOKEN_IDENTIFIER)
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   941
    {
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   942
        fail(ctx, "Macro names must be indentifiers");
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   943
        return;
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   944
    } // if
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   945
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   946
    const unsigned int len = ((unsigned int) (state->source-state->token));
641
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   947
    char *sym = (char *) alloca(len+1);
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   948
    memcpy(sym, state->token, len);
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   949
    sym[len] = '\0';
618
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   950
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   951
    if (!require_newline(state))
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   952
    {
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   953
        fail(ctx, "Invalid #undef directive");
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   954
        return;
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   955
    } // if
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   956
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   957
    remove_define(ctx, sym);
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   958
} // handle_pp_undef
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   959
83302ac1b9f4 Added #undef directive to preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 617
diff changeset
   960
623
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   961
static Conditional *_handle_pp_ifdef(Context *ctx, const Token type)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   962
{
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   963
    IncludeState *state = ctx->include_stack;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   964
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   965
    assert((type == TOKEN_PP_IFDEF) || (type == TOKEN_PP_IFNDEF));
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   966
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   967
    if (preprocessor_internal_lexer(state) != TOKEN_IDENTIFIER)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   968
    {
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   969
        fail(ctx, "Macro names must be indentifiers");
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   970
        return NULL;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   971
    } // if
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   972
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   973
    const unsigned int len = ((unsigned int) (state->source-state->token));
641
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   974
    char *sym = (char *) alloca(len+1);
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   975
    memcpy(sym, state->token, len);
2002d0399ef2 Fixed some off-by-one nonsense.
Ryan C. Gordon <icculus@icculus.org>
parents: 640
diff changeset
   976
    sym[len] = '\0';
623
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   977
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   978
    if (!require_newline(state))
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   979
    {
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   980
        if (type == TOKEN_PP_IFDEF)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   981
            fail(ctx, "Invalid #ifdef directive");
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   982
        else
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   983
            fail(ctx, "Invalid #ifndef directive");
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   984
        return NULL;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   985
    } // if
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   986
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   987
    Conditional *conditional = get_conditional(ctx);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   988
    assert((conditional != NULL) || (ctx->out_of_memory));
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   989
    if (conditional == NULL)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   990
        return NULL;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   991
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   992
    Conditional *prev = state->conditional_stack;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   993
    int skipping = ((prev != NULL) && (prev->skipping));
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   994
    if (!skipping)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   995
    {
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   996
        const int found = (find_define(ctx, sym) != NULL);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   997
        if (type == TOKEN_PP_IFDEF)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   998
            skipping = !found;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
   999
        else
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1000
            skipping = found;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1001
    } // if
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1002
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1003
    conditional->type = type;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1004
    conditional->linenum = state->line - 1;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1005
    conditional->skipping = skipping;
625
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1006
    conditional->chosen = !skipping;
623
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1007
    conditional->next = prev;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1008
    state->conditional_stack = conditional;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1009
    return conditional;
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1010
} // _handle_pp_ifdef
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1011
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1012
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1013
static inline void handle_pp_ifdef(Context *ctx)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1014
{
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1015
    _handle_pp_ifdef(ctx, TOKEN_PP_IFDEF);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1016
} // handle_pp_ifdef
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1017
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1018
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1019
static inline void handle_pp_ifndef(Context *ctx)
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1020
{
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1021
    _handle_pp_ifdef(ctx, TOKEN_PP_IFNDEF);
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1022
} // handle_pp_ifndef
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1023
899d7618efef Implemented #ifdef and #ifndef preprocessor directives.
Ryan C. Gordon <icculus@icculus.org>
parents: 622
diff changeset
  1024
624
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1025
static inline void handle_pp_else(Context *ctx)
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1026
{
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1027
    IncludeState *state = ctx->include_stack;
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1028
    Conditional *cond = state->conditional_stack;
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1029
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1030
    if (!require_newline(state))
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1031
        fail(ctx, "Invalid #else directive");
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1032
    else if (cond == NULL)
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1033
        fail(ctx, "#else without #if");
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1034
    else if (cond->type == TOKEN_PP_ELSE)
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1035
        fail(ctx, "#else after #else");
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1036
    else
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1037
    {
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1038
        cond->type = TOKEN_PP_ELSE;
625
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1039
        cond->skipping = cond->chosen;
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1040
        if (!cond->chosen)
bfb4016d9404 Fixed #else preprocessor directive so it'll work with #elif.
Ryan C. Gordon <icculus@icculus.org>
parents: 624
diff changeset
  1041
            cond->chosen = 1;
624
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1042
    } // else
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1043
} // handle_pp_else
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1044
99d1cf8a18a3 Implemented #else preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 623
diff changeset
  1045
621
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1046
static void handle_pp_endif(Context *ctx)
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1047
{
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1048
    IncludeState *state = ctx->include_stack;
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1049
    Conditional *cond = state->conditional_stack;
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1050
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1051
    if (!require_newline(state))
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1052
        fail(ctx, "Invalid #endif directive");
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1053
    else if (cond == NULL)
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1054
        fail(ctx, "Unmatched #endif");
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1055
    else
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1056
    {
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1057
        state->conditional_stack = cond->next;  // pop it.
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1058
        cond->next = NULL;
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1059
        put_conditionals(ctx, cond);
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1060
    } // else
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1061
} // handle_pp_endif
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1062
bbeb13128ddb Implemented #endif preprocessor directive.
Ryan C. Gordon <icculus@icculus.org>
parents: 620
diff changeset
  1063
644
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1064
static int handle_pp_identifier(Context *ctx)
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1065
{
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1066
    IncludeState *state = ctx->include_stack;
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1067
    const unsigned int len = ((unsigned int) (state->source-state->token));
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1068
    char *sym = (char *) alloca(len+1);
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1069
    memcpy(sym, state->token, len);
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1070
    sym[len] = '\0';
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1071
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1072
    const char *def = find_define(ctx, sym);
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1073
    if (def == NULL)
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1074
        return 0;   // just send the token through unchanged.
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1075
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1076
    if (!push_source(ctx, state->filename, def, strlen(def), state->line, 0))
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1077
    {
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1078
        assert(ctx->out_of_memory);
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1079
        return 0;
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1080
    } // if
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1081
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1082
    return 1;
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1083
} // handle_pp_identifier
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1084
ea8b50a4edaf Handle basic macro replacement in the preprocessor.
Ryan C. Gordon <icculus@icculus.org>
parents: 643
diff changeset
  1085
620
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1086
static void unterminated_pp_condition(Context *ctx)
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1087
{
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1088
    IncludeState *state = ctx->include_stack;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1089
    Conditional *cond = state->conditional_stack;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1090
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1091
    // !!! FIXME: report the line number where the #if is, not the EOI.
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1092
    switch (cond->type)
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1093
    {
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1094
        case TOKEN_PP_IF: fail(ctx, "Unterminated #if"); break;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1095
        case TOKEN_PP_IFDEF: fail(ctx, "Unterminated #ifdef"); break;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1096
        case TOKEN_PP_IFNDEF: fail(ctx, "Unterminated #ifndef"); break;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1097
        case TOKEN_PP_ELSE: fail(ctx, "Unterminated #else"); break;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1098
        case TOKEN_PP_ELIF: fail(ctx, "Unterminated #elif"); break;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1099
        default: assert(0 && "Shouldn't hit this case"); break;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1100
    } // switch
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1101
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1102
    // pop this conditional, we'll report the next error next time...
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1103
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1104
    state->conditional_stack = cond->next;  // pop it.
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1105
    cond->next = NULL;
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1106
    put_conditionals(ctx, cond);
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1107
} // unterminated_pp_condition
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1108
1c4cf996004e Initial work on preprocessor conditionals.
Ryan C. Gordon <icculus@icculus.org>
parents: 618
diff changeset
  1109
561
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
  1110
static inline const char *_preprocessor_nexttoken(Preprocessor *_ctx,
0d2535cc5ac3 Added basic lexer debug output.
Ryan C. Gordon <icculus@icculus.org>
parents: 560
diff changeset
  1111
                                             unsigned int *_len, Token *_token)
555
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1112
{
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1113
    Context *ctx = (Context *) _ctx;
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1114
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1115
    while (1)
940821555fda Initial work on preprocessor. Not yet complete!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff