Module: Mesa Branch: glsl-pp-rework-1 Commit: 5dcda0dc6e01be31b0cc587de9bf1653eb470987 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=5dcda0dc6e01be31b0cc587de9bf1653eb470987
Author: Michal Krol <[email protected]> Date: Fri Sep 4 10:48:51 2009 +0200 glsl: Implement `pragma' preprocessor directive. Handle `optimize(on|off)' and `debug(on|off)' pragmas. --- src/glsl/pp/SConscript | 1 + src/glsl/pp/sl_pp_pragma.c | 106 +++++++++++++++++++++++++++++++++++++++++++ src/glsl/pp/sl_pp_process.c | 4 ++ src/glsl/pp/sl_pp_process.h | 7 +++ src/glsl/pp/sl_pp_token.h | 4 ++ 5 files changed, 122 insertions(+), 0 deletions(-) diff --git a/src/glsl/pp/SConscript b/src/glsl/pp/SConscript index 13fc230..0c1b4ac 100644 --- a/src/glsl/pp/SConscript +++ b/src/glsl/pp/SConscript @@ -14,6 +14,7 @@ glsl = env.StaticLibrary( 'sl_pp_expression.c', 'sl_pp_if.c', 'sl_pp_macro.c', + 'sl_pp_pragma.c', 'sl_pp_process.c', 'sl_pp_purify.c', 'sl_pp_token.c', diff --git a/src/glsl/pp/sl_pp_pragma.c b/src/glsl/pp/sl_pp_pragma.c new file mode 100644 index 0000000..059bc6f --- /dev/null +++ b/src/glsl/pp/sl_pp_pragma.c @@ -0,0 +1,106 @@ +/************************************************************************** + * + * Copyright 2009 VMware, Inc. + * All Rights Reserved. + * + * 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, sub license, 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 (including the + * next paragraph) 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 <stdlib.h> +#include "sl_pp_process.h" + + +int +sl_pp_process_pragma(struct sl_pp_context *context, + const struct sl_pp_token_info *input, + unsigned int first, + unsigned int last, + struct sl_pp_process_state *state) +{ + const char *pragma_name = NULL; + struct sl_pp_token_info out; + const char *arg_name = NULL; + + if (first < last && input[first].token == SL_PP_IDENTIFIER) { + pragma_name = sl_pp_context_cstr(context, input[first].data.identifier); + first++; + } + if (!pragma_name) { + return 0; + } + + if (!strcmp(pragma_name, "optimize")) { + out.token = SL_PP_PRAGMA_OPTIMIZE; + } else if (!strcmp(pragma_name, "debug")) { + out.token = SL_PP_PRAGMA_DEBUG; + } else { + return 0; + } + + while (first < last && input[first].token == SL_PP_WHITESPACE) { + first++; + } + + if (first < last && input[first].token == SL_PP_LPAREN) { + first++; + } else { + return 0; + } + + while (first < last && input[first].token == SL_PP_WHITESPACE) { + first++; + } + + if (first < last && input[first].token == SL_PP_IDENTIFIER) { + arg_name = sl_pp_context_cstr(context, input[first].data.identifier); + first++; + } + if (!arg_name) { + return 0; + } + + if (!strcmp(arg_name, "off")) { + out.data.pragma = 0; + } else if (!strcmp(arg_name, "on")) { + out.data.pragma = 1; + } else { + return 0; + } + + while (first < last && input[first].token == SL_PP_WHITESPACE) { + first++; + } + + if (first < last && input[first].token == SL_PP_RPAREN) { + first++; + } else { + return 0; + } + + /* Ignore the tokens that follow. */ + + if (sl_pp_process_out(state, &out)) { + return -1; + } + + return 0; +} diff --git a/src/glsl/pp/sl_pp_process.c b/src/glsl/pp/sl_pp_process.c index 117aa01..62b7342 100644 --- a/src/glsl/pp/sl_pp_process.c +++ b/src/glsl/pp/sl_pp_process.c @@ -154,6 +154,10 @@ sl_pp_process(struct sl_pp_context *context, } else if (!strcmp(name, "error")) { sl_pp_process_error(context, input, first, last); return -1; + } else if (!strcmp(name, "pragma")) { + if (sl_pp_process_pragma(context, input, first, last, &state)) { + return -1; + } } else if (!strcmp(name, "undef")) { if (sl_pp_process_undef(context, input, first, last)) { return -1; diff --git a/src/glsl/pp/sl_pp_process.h b/src/glsl/pp/sl_pp_process.h index 11a9492..9a29c03 100644 --- a/src/glsl/pp/sl_pp_process.h +++ b/src/glsl/pp/sl_pp_process.h @@ -99,6 +99,13 @@ sl_pp_process_error(struct sl_pp_context *context, unsigned int last); int +sl_pp_process_pragma(struct sl_pp_context *context, + const struct sl_pp_token_info *input, + unsigned int first, + unsigned int last, + struct sl_pp_process_state *state); + +int sl_pp_process_out(struct sl_pp_process_state *state, const struct sl_pp_token_info *token); diff --git a/src/glsl/pp/sl_pp_token.h b/src/glsl/pp/sl_pp_token.h index a53720b..566274e 100644 --- a/src/glsl/pp/sl_pp_token.h +++ b/src/glsl/pp/sl_pp_token.h @@ -88,6 +88,9 @@ enum sl_pp_token { SL_PP_OTHER, + SL_PP_PRAGMA_OPTIMIZE, + SL_PP_PRAGMA_DEBUG, + SL_PP_EOF }; @@ -95,6 +98,7 @@ union sl_pp_token_data { int identifier; int number; char other; + int pragma; }; struct sl_pp_token_info { _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
