svn merge -r524:HEAD "^/branches/released" .

1 files changed, 182 insertions, 0 deletions

diff --git a/mesalib/src/glsl/pp/sl_pp_token_util.c b/mesalib/src/glsl/pp/sl_pp_token_util.c
new file mode 100644
index 000000000..c85263d9a
--- /dev/null
+++ b/mesalib/src/glsl/pp/sl_pp_token_util.c
@@ -0,0 +1,182 @@
+/**************************************************************************
+ * 
+ * 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 <assert.h>
+#include <stdlib.h>
+#include "sl_pp_token_util.h"
+
+
+int
+sl_pp_token_buffer_init(struct sl_pp_token_buffer *buffer,
+                        struct sl_pp_context *context)
+{
+   buffer->context = context;
+   buffer->size = 0;
+   buffer->capacity = 64;
+   buffer->tokens = malloc(buffer->capacity * sizeof(struct sl_pp_token_info));
+   if (!buffer->tokens) {
+      return -1;
+   }
+   return 0;
+}
+
+void
+sl_pp_token_buffer_destroy(struct sl_pp_token_buffer *buffer)
+{
+   free(buffer->tokens);
+}
+
+int
+sl_pp_token_buffer_get(struct sl_pp_token_buffer *buffer,
+                       struct sl_pp_token_info *out)
+{
+   /* Pop from stack first if not empty. */
+   if (buffer->size) {
+      *out = buffer->tokens[--buffer->size];
+      return 0;
+   }
+
+   assert(buffer->context);
+   return sl_pp_token_get(buffer->context, out);
+}
+
+void
+sl_pp_token_buffer_unget(struct sl_pp_token_buffer *buffer,
+                         const struct sl_pp_token_info *in)
+{
+   /* Resize if needed. */
+   if (buffer->size == buffer->capacity) {
+      buffer->capacity += 64;
+      buffer->tokens = realloc(buffer->tokens,
+                               buffer->capacity * sizeof(struct sl_pp_token_info));
+      assert(buffer->tokens);
+   }
+
+   /* Push token on stack. */
+   buffer->tokens[buffer->size++] = *in;
+}
+
+int
+sl_pp_token_buffer_skip_white(struct sl_pp_token_buffer *buffer,
+                              struct sl_pp_token_info *out)
+{
+   if (sl_pp_token_buffer_get(buffer, out)) {
+      return -1;
+   }
+
+   while (out->token == SL_PP_WHITESPACE) {
+      if (sl_pp_token_buffer_get(buffer, out)) {
+         return -1;
+      }
+   }
+
+   return 0;
+}
+
+
+
+int
+sl_pp_token_peek_init(struct sl_pp_token_peek *peek,
+                      struct sl_pp_token_buffer *buffer)
+{
+   peek->buffer = buffer;
+   peek->size = 0;
+   peek->capacity = 64;
+   peek->tokens = malloc(peek->capacity * sizeof(struct sl_pp_token_info));
+   if (!peek->tokens) {
+      return -1;
+   }
+   return 0;
+}
+
+void
+sl_pp_token_peek_destroy(struct sl_pp_token_peek *peek)
+{
+   /* Abort. */
+   while (peek->size) {
+      sl_pp_token_buffer_unget(peek->buffer, &peek->tokens[--peek->size]);
+   }
+   free(peek->tokens);
+}
+
+int
+sl_pp_token_peek_get(struct sl_pp_token_peek *peek,
+                     struct sl_pp_token_info *out)
+{
+   /* Get token from buffer. */
+   if (sl_pp_token_buffer_get(peek->buffer, out)) {
+      return -1;
+   }
+
+   /* Save it. */
+   if (peek->size == peek->capacity) {
+      peek->capacity += 64;
+      peek->tokens = realloc(peek->tokens,
+                             peek->capacity * sizeof(struct sl_pp_token_info));
+      assert(peek->tokens);
+   }
+   peek->tokens[peek->size++] = *out;
+   return 0;
+}
+
+void
+sl_pp_token_peek_commit(struct sl_pp_token_peek *peek)
+{
+   peek->size = 0;
+}
+
+int
+sl_pp_token_peek_to_buffer(const struct sl_pp_token_peek *peek,
+                           struct sl_pp_token_buffer *buffer)
+{
+   unsigned int i;
+
+   if (sl_pp_token_buffer_init(buffer, NULL)) {
+      return -1;
+   }
+   for (i = peek->size; i > 0; i--) {
+      sl_pp_token_buffer_unget(buffer, &peek->tokens[i - 1]);
+   }
+   return 0;
+}
+
+int
+sl_pp_token_peek_skip_white(struct sl_pp_token_peek *peek,
+                            struct sl_pp_token_info *out)
+{
+   if (sl_pp_token_peek_get(peek, out)) {
+      return -1;
+   }
+
+   while (out->token == SL_PP_WHITESPACE) {
+      if (sl_pp_token_peek_get(peek, out)) {
+         return -1;
+      }
+   }
+
+   return 0;
+}