From 7d3a45468b07356d6ca2863b59163b165a83a0f0 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Tue, 9 Feb 2010 21:03:10 -0500
Subject: Get rid of fmemopen() hack.

---
 dimension/grammar.epilogue | 30 ++++++++++++++++++++++++++++++
 dimension/parse.h          |  1 +
 dimension/realize.c        | 14 ++++----------
 3 files changed, 35 insertions(+), 10 deletions(-)

diff --git a/dimension/grammar.epilogue b/dimension/grammar.epilogue
index e8760c7..ecb910a 100644
--- a/dimension/grammar.epilogue
+++ b/dimension/grammar.epilogue
@@ -47,6 +47,36 @@ dmnsn_parse(FILE *file, dmnsn_symbol_table *symtable)
   return astree;
 }
 
+dmnsn_astree *
+dmnsn_parse_string(const char *str, dmnsn_symbol_table *symtable)
+{
+  const char *filename;
+  dmnsn_astnode *fnode = dmnsn_find_symbol(symtable, "__file__");
+  if (fnode && fnode->type == DMNSN_AST_STRING) {
+    filename = fnode->ptr;
+  } else {
+    filename = "<string>";
+    dmnsn_declare_symbol(symtable, "__file__", dmnsn_new_ast_string(filename));
+  }
+
+  void *scanner;
+  dmnsn_astree *astree = dmnsn_new_array(sizeof(dmnsn_astnode));
+
+  dmnsn_yylex_init(&scanner);
+  dmnsn_yyset_extra(NULL, scanner);
+
+  void *buffer = dmnsn_yy_make_string_buffer(str, scanner);
+  dmnsn_yy_push_buffer(buffer, scanner);
+
+  if (yyparse(filename, scanner, astree, symtable) != 0) {
+    dmnsn_delete_astree(astree);
+    astree = NULL;
+  }
+
+  dmnsn_yylex_destroy(scanner);
+  return astree;
+}
+
 const char *
 dmnsn_token_string(dmnsn_token_type token_type)
 {
diff --git a/dimension/parse.h b/dimension/parse.h
index b2658f3..9db4981 100644
--- a/dimension/parse.h
+++ b/dimension/parse.h
@@ -168,6 +168,7 @@ dmnsn_astnode dmnsn_eval_vector(dmnsn_astnode astnode,
  * The workhorse -- parse a file
  */
 dmnsn_astree *dmnsn_parse(FILE *file, dmnsn_symbol_table *symtable);
+dmnsn_astree *dmnsn_parse_string(const char *str, dmnsn_symbol_table *symtable);
 
 /*
  * Parser internals
diff --git a/dimension/realize.c b/dimension/realize.c
index 31fb021..810d86e 100644
--- a/dimension/realize.c
+++ b/dimension/realize.c
@@ -17,8 +17,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  *************************************************************************/
 
-#define _GNU_SOURCE /* For fmemopen */
-
 #include "realize.h"
 #include "parse.h"
 #include "utility.h"
@@ -754,18 +752,14 @@ dmnsn_realize_string(const char *str, dmnsn_symbol_table *symtable)
   if (!symtable) {
     symtable = dmnsn_new_symbol_table();
   }
-  if (!dmnsn_find_symbol(symtable, "__file__")) {
-    dmnsn_declare_symbol(symtable, "__file__",
-                         dmnsn_new_ast_string("<string>"));
-  }
 
-  FILE *file = fmemopen((void *)str, strlen(str), "r");
-  if (!file) {
+  dmnsn_astree *astree = dmnsn_parse_string(str, symtable);
+  if (!astree) {
     return NULL;
   }
 
-  dmnsn_scene *scene = dmnsn_realize(file, symtable);
+  dmnsn_scene *scene = dmnsn_realize_astree(astree);
 
-  fclose(file);
+  dmnsn_delete_astree(astree);
   return scene;
 }
-- 
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