added TEXTURE token, rule, and node type

git-svn-id: svn://anubis/fart/trunk@383 7f9b0f55-74a9-4bce-be96-3c2cd072584d

parser/nodes.h

@@ -552,6 +552,13 @@ class SubtractNode : public Node
         virtual NodeRef evaluate() { return new SubtractNode(); }
 };
 
+class TextureNode : public IdentifierNode
+{
+    public:
+        TextureNode(const std::string & str) : IdentifierNode(str) {}
+        virtual NodeRef evaluate() { return new TextureNode(m_string); }
+};
+
 class TranslateNode : public VectorNode
 {
     public:

parser/parser.lex

@@ -90,6 +90,7 @@ size                return SIZE;
 specular            return SPECULAR;
 sphere              return SPHERE;
 subtract            return SUBTRACT;
+texture             return TEXTURE;
 translate           return TRANSLATE;
 transparency        return TRANSPARENCY;
 union               return UNION;

parser/parser.yy

@@ -103,6 +103,7 @@ refptr<Scope> parser_scope;
 %token SPECULAR;
 %token SPHERE;
 %token SUBTRACT;
+%token TEXTURE;
 %token TRANSLATE;
 %token TRANSPARENCY;
 %token UNION;
@@ -208,6 +209,7 @@ general_item: AMBIENT vector3 { $$ = new AmbientNode($2); }
             | SIZE vector3 { $$ = new SizeNode($2); }
             | SPECULAR vector3 { $$ = new SpecularNode($2); }
             | stmt_expression { $$ = $1; }
+            | TEXTURE STRING { $$ = new TextureNode($2->getString()); }
             | transform_block { $$ = $1; }
             | TRANSLATE vector3 { $$ = new TranslateNode($2); }
             | TRANSPARENCY expression { $$ = new TransparencyNode($2); }