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|
%{
#include <GL/gl.h>
#include "yagl_glsl_state.h"
#include "yagl_malloc.h"
#define YY_NO_INPUT
#define YY_INPUT(buf, result, max_size) \
result = string_input(buf, max_size, yyscanner);
static yy_size_t string_input(char *buf, yy_size_t max_size, yyscan_t yyscanner);
%}
%option bison-bridge reentrant noyywrap
%option nounput
%option never-interactive
%option prefix="yagl_glsl_lexer_"
%option extra-type="struct yagl_glsl_state *"
%x COMMENT PP
WS [ \r\t\v\f]
PRECISION "lowp"|"mediump"|"highp"|"precision"[^;\n]+;?
CONTROL [()\[\]{},;?:/%*&|^!+\-=<>\.]
STRING [^ \r\t\v\f\n()\[\]{},;?:/%*&|^!+\-=<>\.]+
%%
"//"[^\n]* {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_comment(state, strlen(yytext));
}
"/*" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
BEGIN(COMMENT);
yagl_glsl_state_new_comment(state, strlen(yytext));
}
^{WS}*#{WS}*version {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
BEGIN(PP);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_VERSION;
}
^{WS}*#{WS}*define {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
BEGIN(PP);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_DEFINE;
}
^{WS}*#{WS}*extension[^\n]* {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_EXTENSION;
}
[\n]+ {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_pending(state, yytext);
}
{WS}+ {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_pending(state, yytext);
}
"gl_MaxVertexUniformVectors" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_MAXVERTEXUNIFORMVECTORS;
}
"gl_MaxFragmentUniformVectors" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_MAXFRAGMENTUNIFORMVECTORS;
}
"gl_MaxVaryingVectors" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_MAXVARYINGVECTORS;
}
"gl_MaxVaryingFloats" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_MAXVARYINGFLOATS;
}
"attribute" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_ATTRIBUTE;
}
"varying" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_VARYING;
}
"texture1DProjLod" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE1DPROJLOD;
}
"texture1DProj" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE1DPROJ;
}
"texture1DLod" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE1DLOD;
}
"texture1D" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE1D;
}
"texture2DProjLod" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE2DPROJLOD;
}
"texture2DLod" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE2DLOD;
}
"texture2DProj" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE2DPROJ;
}
"texture2D" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE2D;
}
<PP>"texture2D" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE2D;
}
"texture3DProjLod" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE3DPROJLOD;
}
"texture3DLod" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE3DLOD;
}
"texture3DProj" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE3DPROJ;
}
"texture3D" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURE3D;
}
"textureCubeLod" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURECUBELOD;
}
"textureCube" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_TEXTURECUBE;
}
"gl_FragColor" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_GLFRAGCOLOR;
}
{PRECISION} {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_PRECISION;
}
{CONTROL} {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_pending(state, yytext);
}
{STRING} {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_pending(state, yytext);
}
<PP>\n {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
BEGIN(INITIAL);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_EOL;
}
<PP>{WS}+ {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_pending(state, yytext);
}
<PP>[1-9][0-9]* {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_integer_token(state, yylval, strtol(yytext, NULL, 10));
return TOK_INTEGER;
}
<PP>"es" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_ES;
}
<PP>{PRECISION} {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_PRECISION;
}
<PP>{CONTROL} {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_STRING;
}
<PP>{STRING} {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_str_token(state, yylval, yytext);
return TOK_STRING;
}
<COMMENT>[^*\n]* {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_comment(state, strlen(yytext));
}
<COMMENT>[^*\n]*\n {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_comment(state, strlen(yytext) - 1);
yagl_glsl_state_new_pending(state, "\n");
}
<COMMENT>"*"+[^*/\n]* {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_comment(state, strlen(yytext));
}
<COMMENT>"*"+[^*/\n]*\n {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
yagl_glsl_state_new_comment(state, strlen(yytext) - 1);
yagl_glsl_state_new_pending(state, "\n");
}
<COMMENT>"*"+"/" {
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
BEGIN(INITIAL);
yagl_glsl_state_new_comment(state, strlen(yytext));
}
%%
static yy_size_t string_input(char *buf, yy_size_t max_size, yyscan_t yyscanner)
{
struct yagl_glsl_state *state = yagl_glsl_lexer_get_extra(yyscanner);
int rem = state->source_len - state->source_pos;
int num_read = (rem < max_size) ? rem : max_size;
memcpy(buf, state->source + state->source_pos, num_read);
state->source_pos += num_read;
return num_read;
}
//extern int yagl_glsl_debug;
int yagl_glsl_state_init(struct yagl_glsl_state *state,
GLenum shader_type,
const char *source,
int source_len,
int es3_supported)
{
yyscan_t scanner = NULL;
memset(state, 0, sizeof(*state));
//yagl_glsl_debug = 1;
if (yagl_glsl_lexer_lex_init_extra(state, &scanner)) {
return 0;
}
state->shader_type = shader_type;
state->source = source;
state->source_len = source_len;
state->es3_supported = es3_supported;
state->scanner = scanner;
state->token_index = 1;
yagl_glsl_state_set_version(state, 120, 0);
yagl_vector_init(&state->header, sizeof(char), 0);
yagl_vector_init(&state->output, sizeof(char), 0);
yagl_list_init(&state->pending_list);
yagl_vector_init(&state->pending, sizeof(char), 0);
yagl_vector_init(&state->strings, sizeof(char*), 0);
return 1;
}
void yagl_glsl_state_cleanup(struct yagl_glsl_state *state)
{
yyscan_t scanner = state->scanner;
int i;
char **tmp;
struct yagl_glsl_pending *it, *tmp_it;
tmp = yagl_vector_data(&state->strings);
for (i = 0; i < yagl_vector_size(&state->strings); ++i) {
free(*(tmp + i));
}
yagl_vector_cleanup(&state->strings);
yagl_vector_cleanup(&state->pending);
yagl_list_for_each_safe(struct yagl_glsl_pending,
it,
tmp_it,
&state->pending_list, list) {
yagl_list_remove(&it->list);
yagl_free(it);
}
yagl_vector_cleanup(&state->output);
yagl_vector_cleanup(&state->header);
yagl_glsl_lexer_lex_destroy(scanner);
}
|
