X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fsyntax.cpp;h=e7a3990e5c1478b3fcdf8e5727226b05ba688582;hb=22d5405729048ee2677a1e45e309e6328de64a26;hp=bbd364c0730d7cca157376ad34bbdbd028ec1581;hpb=911c6c4acc8218bc40d93917207f9dc32e9f2596;p=libs%2Fgl.git

diff --git a/source/glsl/syntax.cpp b/source/glsl/syntax.cpp
index bbd364c0..e7a3990e 100644
--- a/source/glsl/syntax.cpp
+++ b/source/glsl/syntax.cpp
@@ -105,12 +105,6 @@ void Literal::visit(NodeVisitor &visitor)
 }
 
 
-void ParenthesizedExpression::visit(NodeVisitor &visitor)
-{
-	visitor.visit(*this);
-}
-
-
 VariableReference::VariableReference():
 	declaration(0)
 { }
@@ -470,6 +464,27 @@ Module::Module():
 	shared(Stage::SHARED)
 { }
 
+
+string get_unused_variable_name(const Block &block, const string &base)
+{
+	string name = base;
+
+	unsigned number = 1;
+	unsigned base_size = name.size();
+	while(1)
+	{
+		bool unused = true;
+		for(const Block *b=█ (unused && b); b=b->parent)
+			unused = !b->variables.count(name);
+		if(unused)
+			return name;
+
+		name.erase(base_size);
+		name += format("_%d", number);
+		++number;
+	}
+}
+
 } // namespace SL
 } // namespace GL
 } // namespace Msp