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authorKenneth Graunke <kenneth@whitecape.org>2010-12-06 10:42:27 -0800
committerKenneth Graunke <kenneth@whitecape.org>2010-12-06 13:43:22 -0800
commita8f52647b045b5400ebcfc58ba235599a6e9ad87 (patch)
treedc5c04fec64807773a8f1b1ef587e371ca991965 /src/mesa/program
parent6fae1e4c4d33769e2f255d50907b5aa0ab80edd4 (diff)
symbol_table: Add support for adding a symbol at top-level/global scope.
Diffstat (limited to 'src/mesa/program')
-rw-r--r--src/mesa/program/symbol_table.c85
-rw-r--r--src/mesa/program/symbol_table.h4
2 files changed, 84 insertions, 5 deletions
diff --git a/src/mesa/program/symbol_table.c b/src/mesa/program/symbol_table.c
index 09e7cb44ef..004f1f8fa7 100644
--- a/src/mesa/program/symbol_table.c
+++ b/src/mesa/program/symbol_table.c
@@ -336,12 +336,12 @@ _mesa_symbol_table_add_symbol(struct _mesa_symbol_table *table,
check_symbol_table(table);
if (hdr == NULL) {
- hdr = calloc(1, sizeof(*hdr));
- hdr->name = strdup(name);
+ hdr = calloc(1, sizeof(*hdr));
+ hdr->name = strdup(name);
- hash_table_insert(table->ht, hdr, hdr->name);
- hdr->next = table->hdr;
- table->hdr = hdr;
+ hash_table_insert(table->ht, hdr, hdr->name);
+ hdr->next = table->hdr;
+ table->hdr = hdr;
}
check_symbol_table(table);
@@ -376,6 +376,81 @@ _mesa_symbol_table_add_symbol(struct _mesa_symbol_table *table,
}
+int
+_mesa_symbol_table_add_global_symbol(struct _mesa_symbol_table *table,
+ int name_space, const char *name,
+ void *declaration)
+{
+ struct symbol_header *hdr;
+ struct symbol *sym;
+ struct symbol *curr;
+ struct scope_level *top_scope;
+
+ check_symbol_table(table);
+
+ hdr = find_symbol(table, name);
+
+ check_symbol_table(table);
+
+ if (hdr == NULL) {
+ hdr = calloc(1, sizeof(*hdr));
+ hdr->name = strdup(name);
+
+ hash_table_insert(table->ht, hdr, hdr->name);
+ hdr->next = table->hdr;
+ table->hdr = hdr;
+ }
+
+ check_symbol_table(table);
+
+ /* If the symbol already exists in this namespace at this scope, it cannot
+ * be added to the table.
+ */
+ for (sym = hdr->symbols
+ ; (sym != NULL) && (sym->name_space != name_space)
+ ; sym = sym->next_with_same_name) {
+ /* empty */
+ }
+
+ if (sym && sym->depth == 0)
+ return -1;
+
+ /* Find the top-level scope */
+ for (top_scope = table->current_scope
+ ; top_scope->next != NULL
+ ; top_scope = top_scope->next) {
+ /* empty */
+ }
+
+ sym = calloc(1, sizeof(*sym));
+ sym->next_with_same_scope = top_scope->symbols;
+ sym->hdr = hdr;
+ sym->name_space = name_space;
+ sym->data = declaration;
+
+ assert(sym->hdr == hdr);
+
+ /* Since next_with_same_name is ordered by scope, we need to append the
+ * new symbol to the _end_ of the list.
+ */
+ if (hdr->symbols == NULL) {
+ hdr->symbols = sym;
+ } else {
+ for (curr = hdr->symbols
+ ; curr->next_with_same_name != NULL
+ ; curr = curr->next_with_same_name) {
+ /* empty */
+ }
+ curr->next_with_same_name = sym;
+ }
+ top_scope->symbols = sym;
+
+ check_symbol_table(table);
+ return 0;
+}
+
+
+
struct _mesa_symbol_table *
_mesa_symbol_table_ctor(void)
{
diff --git a/src/mesa/program/symbol_table.h b/src/mesa/program/symbol_table.h
index 1d570fc1a0..f9d91649bb 100644
--- a/src/mesa/program/symbol_table.h
+++ b/src/mesa/program/symbol_table.h
@@ -33,6 +33,10 @@ extern void _mesa_symbol_table_pop_scope(struct _mesa_symbol_table *table);
extern int _mesa_symbol_table_add_symbol(struct _mesa_symbol_table *symtab,
int name_space, const char *name, void *declaration);
+extern int _mesa_symbol_table_add_global_symbol(
+ struct _mesa_symbol_table *symtab, int name_space, const char *name,
+ void *declaration);
+
extern int _mesa_symbol_table_symbol_scope(struct _mesa_symbol_table *table,
int name_space, const char *name);