diff options
Diffstat (limited to 'src/mesa/shader/program_lexer.l')
| -rw-r--r-- | src/mesa/shader/program_lexer.l | 45 |
1 files changed, 42 insertions, 3 deletions
diff --git a/src/mesa/shader/program_lexer.l b/src/mesa/shader/program_lexer.l index c2803ff707..6c4fad3037 100644 --- a/src/mesa/shader/program_lexer.l +++ b/src/mesa/shader/program_lexer.l @@ -40,7 +40,7 @@ if (condition) { \ return token; \ } else { \ - yylval->string = strdup(yytext); \ + yylval->string = return_string(yyextra, yytext); \ return IDENTIFIER; \ } \ } while (0) @@ -63,7 +63,7 @@ yylval->temp_inst.SaturateMode = SATURATE_ ## sat; \ return token; \ } else { \ - yylval->string = strdup(yytext); \ + yylval->string = return_string(yyextra, yytext); \ return IDENTIFIER; \ } \ } while (0) @@ -71,6 +71,45 @@ #define SWIZZLE_INVAL MAKE_SWIZZLE4(SWIZZLE_NIL, SWIZZLE_NIL, \ SWIZZLE_NIL, SWIZZLE_NIL) +/** + * Send a string to the parser using asm_parser_state::string_dumpster + * + * Sends a string to the parser using asm_parser_state::string_dumpster as a + * temporary storage buffer. Data previously stored in + * asm_parser_state::string_dumpster will be lost. If + * asm_parser_state::string_dumpster is not large enough to hold the new + * string, the buffer size will be increased. The buffer size is \b never + * decreased. + * + * \param state Assembler parser state tracking + * \param str String to be passed to the parser + * + * \return + * A pointer to asm_parser_state::string_dumpster on success or \c NULL on + * failure. Currently the only failure case is \c ENOMEM. + */ +static char * +return_string(struct asm_parser_state *state, const char *str) +{ + const size_t len = strlen(str); + + if (len >= state->dumpster_size) { + char *const dumpster = _mesa_realloc(state->string_dumpster, + state->dumpster_size, + len + 1); + if (dumpster == NULL) { + return NULL; + } + + state->string_dumpster = dumpster; + state->dumpster_size = len + 1; + } + + memcpy(state->string_dumpster, str, len + 1); + return state->string_dumpster; +} + + static unsigned mask_from_char(char c) { @@ -308,7 +347,7 @@ ARRAYSHADOW1D { return_token_or_IDENTIFIER(require_ARB_fp && require 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); + yylval->string = return_string(yyextra, yytext); return IDENTIFIER; } |