OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARB prog parser: Differentiate between used and unused names in the lexer

Browse Source 
The lexer will return IDENTIFIER only when the name does not have an
associated symbol.  Otherwise USED_IDENTIFIER is returned.
This commit is contained in:
Ian Romanick
2009-09-10 14:35:33 -07:00
parent d0adebb8d5
commit 0e7953366f
5 changed files with 851 additions and 834 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/mesa/shader/program_lexer.l
View File

@@ -39,8 +39,7 @@
if (condition) { \
return token; \
} else { \
yylval->string = strdup(yytext); \
return IDENTIFIER; \
return handle_ident(yyextra, yytext, yylval); \
} \
} while (0)
@@ -64,8 +63,7 @@
yylval->temp_inst.Opcode = OPCODE_ ## opcode; \
return token; \
} else { \
yylval->string = strdup(yytext); \
return IDENTIFIER; \
return handle_ident(yyextra, yytext, yylval); \
} \
} while (0)
@@ -114,6 +112,15 @@ swiz_from_char(char c)
return 0;
}
static int
handle_ident(struct asm_parser_state *state, const char *text, YYSTYPE *lval)
{
lval->string = strdup(text);
return (_mesa_symbol_table_find_symbol(state->st, 0, text) == NULL)
? IDENTIFIER : USED_IDENTIFIER;
}
#define YY_USER_ACTION \
do { \
yylloc->first_column = yylloc->last_column; \
@@ -299,10 +306,7 @@ ARRAY2D { return_token_or_IDENTIFIER(require_ARB_fp && require
ARRAYSHADOW1D { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_texarray, TEX_ARRAYSHADOW1D); }
ARRAYSHADOW2D { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_texarray, TEX_ARRAYSHADOW2D); }
[_a-zA-Z$][_a-zA-Z0-9$]* {
yylval->string = strdup(yytext);
return IDENTIFIER;
}
[_a-zA-Z$][_a-zA-Z0-9$]* { return handle_ident(yyextra, yytext, yylval); }
".." { return DOT_DOT; }