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authorMichal Krol <michal@vmware.com>2009-09-04 11:58:19 +0200
committerMichal Krol <michal@vmware.com>2009-09-07 10:12:03 +0200
commitbb8f38ea6f71179cd4adb0ca33c464716be17dcb (patch)
tree9e4df396508bbbf2c764a2346ae6f33653e4d809 /src/glsl/pp
parentddd8ae7fbc643892b08ddf66c67bca36d42b53a6 (diff)
glsl: Implement `line' preprocessor directive.
Diffstat (limited to 'src/glsl/pp')
-rw-r--r--src/glsl/pp/SConscript1
-rw-r--r--src/glsl/pp/sl_pp_line.c95
-rw-r--r--src/glsl/pp/sl_pp_process.c7
-rw-r--r--src/glsl/pp/sl_pp_process.h6
4 files changed, 108 insertions, 1 deletions
diff --git a/src/glsl/pp/SConscript b/src/glsl/pp/SConscript
index dae8830eeb..cc930380c2 100644
--- a/src/glsl/pp/SConscript
+++ b/src/glsl/pp/SConscript
@@ -14,6 +14,7 @@ glsl = env.StaticLibrary(
'sl_pp_expression.c',
'sl_pp_extension.c',
'sl_pp_if.c',
+ 'sl_pp_line.c',
'sl_pp_macro.c',
'sl_pp_pragma.c',
'sl_pp_process.c',
diff --git a/src/glsl/pp/sl_pp_line.c b/src/glsl/pp/sl_pp_line.c
new file mode 100644
index 0000000000..3300a4785b
--- /dev/null
+++ b/src/glsl/pp/sl_pp_line.c
@@ -0,0 +1,95 @@
+/**************************************************************************
+ *
+ * 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_line(struct sl_pp_context *context,
+ const struct sl_pp_token_info *input,
+ unsigned int first,
+ unsigned int last)
+{
+ unsigned int i;
+ struct sl_pp_process_state state;
+ int line_number = -1;
+ int file_number = -1;
+
+ memset(&state, 0, sizeof(state));
+ for (i = first; i < last;) {
+ switch (input[i].token) {
+ case SL_PP_WHITESPACE:
+ i++;
+ break;
+
+ case SL_PP_IDENTIFIER:
+ if (sl_pp_macro_expand(context, input, &i, NULL, &state, 0)) {
+ free(state.out);
+ return -1;
+ }
+ break;
+
+ default:
+ if (sl_pp_process_out(&state, &input[i])) {
+ free(state.out);
+ return -1;
+ }
+ i++;
+ }
+ }
+
+ if (state.out_len > 0 && state.out[0].token == SL_PP_NUMBER) {
+ line_number = state.out[0].data.number;
+ } else {
+ strcpy(context->error_msg, "expected number after `#line'");
+ free(state.out);
+ return -1;
+ }
+
+ if (state.out_len > 1) {
+ if (state.out[1].token == SL_PP_NUMBER) {
+ file_number = state.out[1].data.number;
+ } else {
+ strcpy(context->error_msg, "expected number after line number");
+ free(state.out);
+ return -1;
+ }
+
+ if (state.out_len > 2) {
+ strcpy(context->error_msg, "expected end of line after file number");
+ free(state.out);
+ return -1;
+ }
+ }
+
+ free(state.out);
+
+ /* TODO: Do something with line and file numbers. */
+
+ return 0;
+}
diff --git a/src/glsl/pp/sl_pp_process.c b/src/glsl/pp/sl_pp_process.c
index 18289790d1..5479e8a868 100644
--- a/src/glsl/pp/sl_pp_process.c
+++ b/src/glsl/pp/sl_pp_process.c
@@ -155,6 +155,10 @@ sl_pp_process(struct sl_pp_context *context,
if (sl_pp_process_extension(context, input, first, last, &state)) {
return -1;
}
+ } else if (!strcmp(name, "line")) {
+ if (sl_pp_process_line(context, input, first, last)) {
+ return -1;
+ }
} else if (!strcmp(name, "pragma")) {
if (sl_pp_process_pragma(context, input, first, last, &state)) {
return -1;
@@ -164,7 +168,8 @@ sl_pp_process(struct sl_pp_context *context,
return -1;
}
} else {
- /* XXX: Ignore. */
+ strcpy(context->error_msg, "unrecognised directive name");
+ return -1;
}
}
diff --git a/src/glsl/pp/sl_pp_process.h b/src/glsl/pp/sl_pp_process.h
index 5891866543..6f90fbd3e7 100644
--- a/src/glsl/pp/sl_pp_process.h
+++ b/src/glsl/pp/sl_pp_process.h
@@ -113,6 +113,12 @@ sl_pp_process_extension(struct sl_pp_context *context,
struct sl_pp_process_state *state);
int
+sl_pp_process_line(struct sl_pp_context *context,
+ const struct sl_pp_token_info *input,
+ unsigned int first,
+ unsigned int last);
+
+int
sl_pp_process_out(struct sl_pp_process_state *state,
const struct sl_pp_token_info *token);