diff options
author | Michal Krol <[email protected]> | 2009-09-04 11:32:46 +0200 |
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committer | Michal Krol <[email protected]> | 2009-09-07 10:12:00 +0200 |
commit | 87d2de04fbb7d9ea8eae9c58f7c7fb842ffe06f6 (patch) | |
tree | 7b705dd03e7828dd394c416be6035948084bc54b /src/glsl/pp/sl_pp_extension.c | |
parent | 94321b44416f47eb08bf72c93f4299ff7dc47017 (diff) |
glsl: Implement `extension' preprocessor directive.
No extensions supported.
Diffstat (limited to 'src/glsl/pp/sl_pp_extension.c')
-rw-r--r-- | src/glsl/pp/sl_pp_extension.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/glsl/pp/sl_pp_extension.c b/src/glsl/pp/sl_pp_extension.c new file mode 100644 index 00000000000..3d223a1a548 --- /dev/null +++ b/src/glsl/pp/sl_pp_extension.c @@ -0,0 +1,129 @@ +/************************************************************************** + * + * 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_extension(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 all_extensions = -1; + const char *extension_name = NULL; + const char *behavior = NULL; + struct sl_pp_token_info out; + + all_extensions = sl_pp_context_add_unique_str(context, "all"); + if (all_extensions == -1) { + return -1; + } + + if (first < last && input[first].token == SL_PP_IDENTIFIER) { + extension_name = sl_pp_context_cstr(context, input[first].data.identifier); + first++; + } + if (!extension_name) { + strcpy(context->error_msg, "expected identifier after `#extension'"); + return -1; + } + + if (!strcmp(extension_name, "all")) { + out.data.extension = all_extensions; + } else { + out.data.extension = -1; + } + + while (first < last && input[first].token == SL_PP_WHITESPACE) { + first++; + } + + if (first < last && input[first].token == SL_PP_COLON) { + first++; + } else { + strcpy(context->error_msg, "expected `:' after extension name"); + return -1; + } + + while (first < last && input[first].token == SL_PP_WHITESPACE) { + first++; + } + + if (first < last && input[first].token == SL_PP_IDENTIFIER) { + behavior = sl_pp_context_cstr(context, input[first].data.identifier); + first++; + } + if (!behavior) { + strcpy(context->error_msg, "expected identifier after `:'"); + return -1; + } + + if (!strcmp(behavior, "require")) { + strcpy(context->error_msg, "unable to enable required extension"); + return -1; + } else if (!strcmp(behavior, "enable")) { + if (out.data.extension == all_extensions) { + strcpy(context->error_msg, "unable to enable all extensions"); + return -1; + } else { + return 0; + } + } else if (!strcmp(behavior, "warn")) { + if (out.data.extension == all_extensions) { + out.token = SL_PP_EXTENSION_WARN; + } else { + return 0; + } + } else if (!strcmp(behavior, "disable")) { + if (out.data.extension == all_extensions) { + out.token = SL_PP_EXTENSION_DISABLE; + } else { + return 0; + } + } else { + strcpy(context->error_msg, "unrecognised behavior name"); + return -1; + } + + while (first < last && input[first].token == SL_PP_WHITESPACE) { + first++; + } + + if (first < last) { + strcpy(context->error_msg, "expected end of line after behavior name"); + return -1; + } + + if (sl_pp_process_out(state, &out)) { + return -1; + } + + return 0; +} |