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-rw-r--r--mesalib/src/glsl/pp/sl_pp_context.c182
1 files changed, 182 insertions, 0 deletions
diff --git a/mesalib/src/glsl/pp/sl_pp_context.c b/mesalib/src/glsl/pp/sl_pp_context.c
new file mode 100644
index 000000000..74a9bdddf
--- /dev/null
+++ b/mesalib/src/glsl/pp/sl_pp_context.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 <stdlib.h>
+#include <string.h>
+#include "sl_pp_public.h"
+#include "sl_pp_context.h"
+
+
+struct sl_pp_context *
+sl_pp_context_create(const char *input,
+ const struct sl_pp_purify_options *options)
+{
+ struct sl_pp_context *context;
+
+ context = calloc(1, sizeof(struct sl_pp_context));
+ if (!context) {
+ return NULL;
+ }
+
+ if (sl_pp_dict_init(context)) {
+ sl_pp_context_destroy(context);
+ return NULL;
+ }
+
+ context->getc_buf_capacity = 64;
+ context->getc_buf = malloc(context->getc_buf_capacity * sizeof(char));
+ if (!context->getc_buf) {
+ sl_pp_context_destroy(context);
+ return NULL;
+ }
+
+ if (sl_pp_token_buffer_init(&context->tokens, context)) {
+ sl_pp_context_destroy(context);
+ return NULL;
+ }
+
+ context->macro_tail = &context->macro;
+ context->if_ptr = SL_PP_MAX_IF_NESTING;
+ context->if_value = 1;
+ memset(context->error_msg, 0, sizeof(context->error_msg));
+ context->error_line = 1;
+ context->line = 1;
+ context->file = 0;
+
+ sl_pp_purify_state_init(&context->pure, input, options);
+
+ memset(&context->process_state, 0, sizeof(context->process_state));
+
+ return context;
+}
+
+void
+sl_pp_context_destroy(struct sl_pp_context *context)
+{
+ if (context) {
+ free(context->cstr_pool);
+ sl_pp_macro_free(context->macro);
+ free(context->getc_buf);
+ sl_pp_token_buffer_destroy(&context->tokens);
+ free(context->process_state.out);
+ free(context);
+ }
+}
+
+const char *
+sl_pp_context_error_message(const struct sl_pp_context *context)
+{
+ return context->error_msg;
+}
+
+void
+sl_pp_context_error_position(const struct sl_pp_context *context,
+ unsigned int *file,
+ unsigned int *line)
+{
+ if (file) {
+ *file = 0;
+ }
+ if (line) {
+ *line = context->error_line;
+ }
+}
+
+int
+sl_pp_context_add_predefined(struct sl_pp_context *context,
+ const char *name,
+ const char *value)
+{
+ struct sl_pp_predefined pre;
+
+ if (context->num_predefined == SL_PP_MAX_PREDEFINED) {
+ return -1;
+ }
+
+ pre.name = sl_pp_context_add_unique_str(context, name);
+ if (pre.name == -1) {
+ return -1;
+ }
+
+ pre.value = sl_pp_context_add_unique_str(context, value);
+ if (pre.value == -1) {
+ return -1;
+ }
+
+ context->predefined[context->num_predefined++] = pre;
+ return 0;
+}
+
+int
+sl_pp_context_add_unique_str(struct sl_pp_context *context,
+ const char *str)
+{
+ unsigned int size;
+ unsigned int offset = 0;
+
+ size = strlen(str) + 1;
+
+ /* Find out if this is a unique string. */
+ while (offset < context->cstr_pool_len) {
+ const char *str2;
+ unsigned int size2;
+
+ str2 = &context->cstr_pool[offset];
+ size2 = strlen(str2) + 1;
+ if (size == size2 && !memcmp(str, str2, size - 1)) {
+ return offset;
+ }
+
+ offset += size2;
+ }
+
+ if (context->cstr_pool_len + size > context->cstr_pool_max) {
+ context->cstr_pool_max = (context->cstr_pool_len + size + 0xffff) & ~0xffff;
+ context->cstr_pool = realloc(context->cstr_pool, context->cstr_pool_max);
+ }
+
+ if (!context->cstr_pool) {
+ strcpy(context->error_msg, "out of memory");
+ return -1;
+ }
+
+ offset = context->cstr_pool_len;
+ memcpy(&context->cstr_pool[offset], str, size);
+ context->cstr_pool_len += size;
+
+ return offset;
+}
+
+const char *
+sl_pp_context_cstr(const struct sl_pp_context *context,
+ int offset)
+{
+ if (offset == -1) {
+ return NULL;
+ }
+ return &context->cstr_pool[offset];
+}