X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fsyntax.cpp;h=d0273909d68db900e0d95e79c08f1d2cf9f140cd;hb=8f5f54a9e165dae424e5b0bb8e488c3d01849bf6;hp=bbd364c0730d7cca157376ad34bbdbd028ec1581;hpb=911c6c4acc8218bc40d93917207f9dc32e9f2596;p=libs%2Fgl.git

diff --git a/source/glsl/syntax.cpp b/source/glsl/syntax.cpp
index bbd364c0..d0273909 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)
 { }
@@ -375,7 +369,7 @@ InterfaceBlock::InterfaceBlock():
 InterfaceBlock::InterfaceBlock(const InterfaceBlock &other):
 	Statement(other),
 	interface(other.interface),
-	name(other.name),
+	block_name(other.block_name),
 	members(other.members),
 	instance_name(other.instance_name),
 	array(other.array),
@@ -470,6 +464,95 @@ 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;
+	}
+}
+
+bool is_same_type(const TypeDeclaration &type1, const TypeDeclaration &type2)
+{
+	if(const BasicTypeDeclaration *basic1 = dynamic_cast<const BasicTypeDeclaration *>(&type1))
+	{
+		const BasicTypeDeclaration *basic2 = dynamic_cast<const BasicTypeDeclaration *>(&type2);
+		if(!basic2)
+			return false;
+
+		if(basic1->kind!=basic2->kind || basic1->size!=basic2->size)
+			return false;
+
+		if(basic1->base_type && basic2->base_type)
+			return is_same_type(*basic1->base_type, *basic2->base_type);
+		else
+			return (!basic1->base_type && !basic2->base_type);
+	}
+	else if(const ImageTypeDeclaration *image1 = dynamic_cast<const ImageTypeDeclaration *>(&type1))
+	{
+		const ImageTypeDeclaration *image2 = dynamic_cast<const ImageTypeDeclaration *>(&type2);
+		if(!image2)
+			return false;
+
+		if(image1->dimensions!=image2->dimensions || image1->array!=image2->array)
+			return false;
+		if(image1->sampled!=image2->sampled || image1->shadow!=image2->shadow)
+			return false;
+
+		if(image1->base_type && image2->base_type)
+			return is_same_type(*image1->base_type, *image2->base_type);
+		else
+			return (!image1->base_type && !image2->base_type);
+	}
+	else if(const StructDeclaration *strct1 = dynamic_cast<const StructDeclaration *>(&type1))
+	{
+		const StructDeclaration *strct2 = dynamic_cast<const StructDeclaration *>(&type2);
+		if(!strct2)
+			return false;
+
+		NodeList<Statement>::const_iterator i = strct1->members.body.begin();
+		NodeList<Statement>::const_iterator j = strct2->members.body.begin();
+		for(; (i!=strct1->members.body.end() && j!=strct2->members.body.end()); ++i, ++j)
+		{
+			const VariableDeclaration *var1 = dynamic_cast<const VariableDeclaration *>(i->get());
+			const VariableDeclaration *var2 = dynamic_cast<const VariableDeclaration *>(j->get());
+			if(!var1 || !var1->type_declaration || !var2 || !var2->type_declaration)
+				return false;
+			if(!is_same_type(*var1->type_declaration, *var2->type_declaration))
+				return false;
+			if(var1->name!=var2->name || var1->array!=var2->array)
+				return false;
+			// TODO Compare array sizes
+			// TODO Compare layout qualifiers for interface block members
+		}
+
+		return (i==strct1->members.body.end() && j==strct2->members.body.end());
+	}
+	else
+		return false;
+}
+
+int get_layout_value(const Layout &layout, const string &name, int def_value)
+{
+	for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
+		if(i->name==name)
+			return i->value;
+	return def_value;
+}
+
 } // namespace SL
 } // namespace GL
 } // namespace Msp