X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fprogramcompiler.h;h=34b64b557ca29a9185dc2f5e2aacaa1420bbf325;hb=96881e56ececfa3f4b0707dc168c687b35d249a0;hp=978b01e2d159135d3dcf5dbb7b0ef6b4b5bb6c0d;hpb=961715848c111907b5f443c5b545a429b40583e6;p=libs%2Fgl.git

diff --git a/source/programcompiler.h b/source/programcompiler.h
index 978b01e2..34b64b55 100644
--- a/source/programcompiler.h
+++ b/source/programcompiler.h
@@ -12,8 +12,17 @@ class Program;
 
 class ProgramCompiler
 {
-public:
-	struct Formatter: ProgramSyntax::NodeVisitor
+private:
+	struct Visitor: ProgramSyntax::TraversingVisitor
+	{
+		ProgramSyntax::Stage *stage;
+
+		Visitor();
+
+		virtual void apply(ProgramSyntax::Stage &);
+	};
+
+	struct Formatter: Visitor
 	{
 		std::string formatted;
 		unsigned indent;
@@ -41,8 +50,7 @@ public:
 		virtual void visit(ProgramSyntax::Return &);
 	};
 
-private:
-	struct VariableResolver: ProgramSyntax::TraversingVisitor
+	struct VariableResolver: Visitor
 	{
 		std::vector<ProgramSyntax::Block *> blocks;
 		ProgramSyntax::StructDeclaration *type;
@@ -59,20 +67,19 @@ private:
 		virtual void visit(ProgramSyntax::InterfaceBlock &);
 	};
 
-	struct InterfaceGenerator: ProgramSyntax::TraversingVisitor
+	struct InterfaceGenerator: Visitor
 	{
-		ProgramSyntax::Context *context;
 		std::string in_prefix;
 		std::string out_prefix;
 		unsigned scope_level;
-		std::map<std::string, ProgramSyntax::NodePtr<ProgramSyntax::Node> > iface_declarations;
+		std::map<std::string, ProgramSyntax::VariableDeclaration *> iface_declarations;
 		bool remove_node;
-		std::list<ProgramSyntax::NodePtr<ProgramSyntax::Node> > insert_nodes;
+		std::list<ProgramSyntax::Node *> insert_nodes;
 
 		InterfaceGenerator();
 
-		static std::string get_out_prefix(ProgramSyntax::ContextType);
-		void visit(ProgramSyntax::Context &);
+		static std::string get_out_prefix(ProgramSyntax::StageType);
+		virtual void apply(ProgramSyntax::Stage &);
 		virtual void visit(ProgramSyntax::Block &);
 		std::string change_prefix(const std::string &, const std::string &) const;
 		bool generate_interface(ProgramSyntax::VariableDeclaration &, const std::string &, const std::string &);
@@ -82,22 +89,29 @@ private:
 		virtual void visit(ProgramSyntax::Passthrough &);
 	};
 
-	struct VariableRenamer: ProgramSyntax::TraversingVisitor
+	struct VariableRenamer: Visitor
 	{
 		virtual void visit(ProgramSyntax::VariableReference &);
 		virtual void visit(ProgramSyntax::VariableDeclaration &);
 	};
 
-	struct UnusedVariableLocator: ProgramSyntax::TraversingVisitor
+	struct UnusedVariableLocator: Visitor
 	{
-		std::set<ProgramSyntax::VariableDeclaration *> unused_variables;
+		std::set<ProgramSyntax::Node *> unused_nodes;
+		std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Node *> assignments;
+		bool assignment;
+		ProgramSyntax::VariableDeclaration *assignment_target;
+
+		UnusedVariableLocator();
 
 		virtual void visit(ProgramSyntax::VariableReference &);
 		virtual void visit(ProgramSyntax::MemberAccess &);
+		virtual void visit(ProgramSyntax::BinaryExpression &);
+		virtual void visit(ProgramSyntax::ExpressionStatement &);
 		virtual void visit(ProgramSyntax::VariableDeclaration &);
 	};
 
-	struct NodeRemover: ProgramSyntax::TraversingVisitor
+	struct NodeRemover: Visitor
 	{
 		std::set<ProgramSyntax::Node *> to_remove;
 		unsigned n_removed;
@@ -108,6 +122,7 @@ private:
 
 		virtual void visit(ProgramSyntax::Block &);
 		virtual void visit(ProgramSyntax::StructDeclaration &);
+		virtual void visit(ProgramSyntax::VariableDeclaration &);
 		virtual void visit(ProgramSyntax::InterfaceBlock &);
 	};
 
@@ -123,10 +138,12 @@ public:
 
 private:
 	void process();
-	void process(ProgramSyntax::Context &);
+	void generate(ProgramSyntax::Stage &);
+	bool optimize(ProgramSyntax::Stage &);
 	static void inject_block(ProgramSyntax::Block &, const ProgramSyntax::Block &);
-	static void resolve_variables(ProgramSyntax::Context &);
-	std::string format_context(ProgramSyntax::Context &);
+	template<typename T>
+	static void apply(ProgramSyntax::Stage &);
+	std::string create_source(ProgramSyntax::Stage &);
 };
 
 } // namespace GL