-/*
- * Copyright (C) 2012
- * Dale Weiler
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is furnished to do
- * so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-#include "gmqcc.h"
-
-/* compile-time constant for type constants */
-typedef struct {
- char *name;
- int type;
- float value[3];
- char *string; /* string value if constant is string literal */
-} constant;
-VECTOR_MAKE(constant, compile_constants);
-
-void compile_constant_debug() {
- int iter = 0;
- for(; iter < compile_constants_elements; iter++) {
- constant *c = &compile_constants_data[iter];
- switch(c->type) {
- case TYPE_FLOAT: printf("constant: %s FLOAT %f\n", c->name, c->value[0]); break;
- case TYPE_VECTOR: printf("constant: %s VECTOR {%f,%f,%f}\n",c->name, c->value[0], c->value[1], c->value[2]); break;
- case TYPE_STRING: printf("constant: %s STRING %s\n", c->name, c->string); break;
- case TYPE_VOID: printf("constant: %s VOID %s\n", c->name, c->string); break;
- }
- }
-}
-
-/*
- * Generates a parse tree out of the lexees generated by the lexer. This
- * is where the tree is built. This is where valid check is performed.
- */
-int parse_gen(lex_file *file) {
- int token = 0;
- while ((token = lex_token(file)) != ERROR_LEX && file->length >= 0) {
- switch (token) {
- case TOKEN_TYPEDEF: {
- char *f; /* from */
- char *t; /* to */
-
- token = lex_token(file);
- token = lex_token(file); f = util_strdup(file->lastok);
- token = lex_token(file);
- token = lex_token(file); t = util_strdup(file->lastok);
-
- typedef_add(file, f, t);
- mem_d(f);
- mem_d(t);
-
- token = lex_token(file);
- if (token == ' ')
- token = lex_token(file);
-
- if (token != ';')
- error(file, ERROR_PARSE, "Expected a `;` at end of typedef statement");
-
- token = lex_token(file);
- break;
- }
-
- case TOKEN_VOID: goto fall;
- case TOKEN_STRING: goto fall;
- case TOKEN_VECTOR: goto fall;
- case TOKEN_ENTITY: goto fall;
- case TOKEN_FLOAT: goto fall;
- {
- fall:; {
- char *name = NULL;
- int type = token; /* story copy */
-
- /* skip over space */
- token = lex_token(file);
- if (token == ' ')
- token = lex_token(file);
-
- /* save name */
- name = util_strdup(file->lastok);
-
- /* skip spaces */
- token = lex_token(file);
- if (token == ' ')
- token = lex_token(file);
-
- if (token == ';') {
- /*
- * Definitions go to the defs table, they don't have
- * any sort of data with them yet.
- */
- } else if (token == '=') {
- token = lex_token(file);
- if (token == ' ')
- token = lex_token(file);
-
- /* strings are in file->lastok */
- switch (type) {
- case TOKEN_VOID:
- error(file, ERROR_PARSE, "Cannot assign value to type void\n");
-
- /* TODO: Validate (end quote), strip quotes for constant add, name constant */
- case TOKEN_STRING:
- if (*file->lastok != '"')
- error(file, ERROR_PARSE, "Expected a '\"' (quote) for string constant\n");
- /* add the compile-time constant */
- {
- constant c;
- c.name = util_strdup(name),
- c.type = TYPE_STRING,
- c.value[0] = 0;
- c.value[1] = 0;
- c.value[2] = 0;
- c.string = util_strdup(file->lastok);
- compile_constants_add(c);
- }
- break;
- /* TODO: name constant, old qc vec literals, whitespace fixes, name constant */
- case TOKEN_VECTOR: {
- float compile_calc_x = 0;
- float compile_calc_y = 0;
- float compile_calc_z = 0;
- int compile_calc_d = 0; /* dot? */
- int compile_calc_s = 0; /* sign (-, +) */
-
- char compile_data[1024];
- char *compile_eval = compile_data;
-
- if (token != '{')
- error(file, ERROR_PARSE, "Expected initializer list {} for vector constant\n");
-
- /*
- * This parses a single vector element: x,y & z. This will handle all the
- * complicated mechanics of a vector, and can be extended as well. This
- * is a rather large macro, and is #undef'd after it's use below.
- */
- #define PARSE_VEC_ELEMENT(NAME, BIT) \
- token = lex_token(file); \
- if (token == ' ') \
- token = lex_token(file); \
- if (token == '.') \
- compile_calc_d = 1; \
- if (!isdigit(token) && !compile_calc_d && token != '+' && token != '-') \
- error(file, ERROR_PARSE,"Invalid constant initializer element %c for vector, must be numeric\n", NAME); \
- if (token == '+') \
- compile_calc_s = '+'; \
- if (token == '-' && !compile_calc_s) \
- compile_calc_s = '-'; \
- while (isdigit(token) || token == '.' || token == '+' || token == '-') { \
- *compile_eval++ = token; \
- token = lex_token(file); \
- if (token == '.' && compile_calc_d) { \
- error(file, ERROR_PARSE, "Invalid constant initializer element %c for vector, must be numeric.\n", NAME); \
- token = lex_token(file); \
- } \
- if ((token == '-' || token == '+') && compile_calc_s) { \
- error(file, ERROR_PARSE, "Invalid constant initializer sign for vector element %c\n", NAME); \
- token = lex_token(file); \
- } \
- else if (token == '.' && !compile_calc_d) \
- compile_calc_d = 1; \
- else if (token == '-' && !compile_calc_s) \
- compile_calc_s = '-'; \
- else if (token == '+' && !compile_calc_s) \
- compile_calc_s = '+'; \
- } \
- if (token == ' ') \
- token = lex_token(file); \
- if (NAME != 'z') { \
- if (token != ',' && token != ' ') \
- error(file, ERROR_PARSE, "invalid constant initializer element %c for vector (missing spaces, or comma delimited list?)\n", NAME); \
- } else if (token != '}') { \
- error(file, ERROR_PARSE, "Expected `}` on end of constant initialization for vector\n"); \
- } \
- compile_calc_##BIT = atof(compile_data); \
- compile_calc_d = 0; \
- compile_calc_s = 0; \
- compile_eval = &compile_data[0]; \
- memset(compile_data, 0, sizeof(compile_data))
-
- /*
- * Parse all elements using the macro above.
- * We must undef the macro afterwards.
- */
- PARSE_VEC_ELEMENT('x', x);
- PARSE_VEC_ELEMENT('y', y);
- PARSE_VEC_ELEMENT('z', z);
- #undef PARSE_VEC_ELEMENT
-
- /* Check for the semi-colon... */
- token = lex_token(file);
- if (token == ' ')
- token = lex_token(file);
- if (token != ';')
- error(file, ERROR_PARSE, "Expected `;` on end of constant initialization for vector\n");
-
- /* add the compile-time constant */
- {
- constant c;
-
- c.name = util_strdup(name),
- c.type = TYPE_VECTOR,
- c.value[0] = compile_calc_x;
- c.value[1] = compile_calc_y;
- c.value[2] = compile_calc_z;
- c.string = NULL;
- compile_constants_add(c);
- }
- break;
- }
-
- case TOKEN_ENTITY:
- case TOKEN_FLOAT: /*TODO: validate, constant generation, name constant */
- if (!isdigit(token))
- error(file, ERROR_PARSE, "Expected numeric constant for float constant\n");
- /* constant */
- {
- constant c;
- c.name = util_strdup(name),
- c.type = TOKEN_FLOAT,
- c.value[0] = 0;
- c.value[1] = 0;
- c.value[2] = 0;
- c.string = NULL;
- compile_constants_add(c);
- }
- break;
- }
- } else if (token == '(') {
- printf("FUNCTION ??\n");
- }
- mem_d(name);
- }}
-
- /*
- * From here down is all language punctuation: There is no
- * need to actual create tokens from these because they're already
- * tokenized as these individual tokens (which are in a special area
- * of the ascii table which doesn't conflict with our other tokens
- * which are higer than the ascii table.)
- */
- case '#':
- token = lex_token(file); /* skip '#' */
- if (token == ' ')
- token = lex_token(file);
- /*
- * If we make it here we found a directive, the supported
- * directives so far are #include.
- */
- if (strncmp(file->lastok, "include", sizeof("include")) == 0) {
- char *copy = NULL;
- lex_file *next = NULL;
- /*
- * We only suport include " ", not <> like in C (why?)
- * because the latter is silly.
- */
- while (*file->lastok != '"' && token != '\n')
- token = lex_token(file);
- if (token == '\n')
- return error(file, ERROR_PARSE, "Invalid use of include preprocessor directive: wanted #include \"file.h\"\n");
-
- copy = util_strdup(file->lastok);
- next = lex_include(file, copy);
-
- if (!next) {
- error(file, ERROR_INTERNAL, "Include subsystem failure\n");
- exit (-1);
- }
- /* constant */
- {
- constant c;
- c.name = "#include",
- c.type = TYPE_VOID,
- c.value[0] = 0;
- c.value[1] = 0;
- c.value[2] = 0;
- c.string = copy;
- compile_constants_add(c);
- }
- parse_gen(next);
- mem_d (copy);
- lex_close(next);
- }
- /* skip all tokens to end of directive */
- while (token != '\n')
- token = lex_token(file);
- break;
-
- case LEX_IDENT:
- token = lex_token(file);
- break;
- }
- }
- compile_constant_debug();
- lex_reset(file);
- /* free constants */
- {
- size_t i = 0;
- for (; i < compile_constants_elements; i++) {
- mem_d(compile_constants_data[i].name);
- mem_d(compile_constants_data[i].string);
- }
- mem_d(compile_constants_data);
- }
- return 1;
-}
projects / xonotic / gmqcc.git / blobdiff