X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fprogramcompiler.h;h=34b64b557ca29a9185dc2f5e2aacaa1420bbf325;hp=1959618f30509ec76882c4a427745df83dcc7e25;hb=96881e56ececfa3f4b0707dc168c687b35d249a0;hpb=73ce62f3b9c2bbfc1e655a9df343389a733dc795

diff --git a/source/programcompiler.h b/source/programcompiler.h
index 1959618f..34b64b55 100644
--- a/source/programcompiler.h
+++ b/source/programcompiler.h
@@ -1,6 +1,7 @@
 #ifndef MSP_GL_PROGRAMCOMPILER_H_
 #define MSP_GL_PROGRAMCOMPILER_H_
 
+#include <set>
 #include "programparser.h"
 #include "programsyntax.h"
 
@@ -11,8 +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;
@@ -40,7 +50,82 @@ public:
 		virtual void visit(ProgramSyntax::Return &);
 	};
 
-private:
+	struct VariableResolver: Visitor
+	{
+		std::vector<ProgramSyntax::Block *> blocks;
+		ProgramSyntax::StructDeclaration *type;
+		bool anonymous;
+
+		VariableResolver();
+
+		virtual void visit(ProgramSyntax::Block &);
+		virtual void visit(ProgramSyntax::VariableReference &);
+		virtual void visit(ProgramSyntax::MemberAccess &);
+		virtual void visit(ProgramSyntax::BinaryExpression &);
+		virtual void visit(ProgramSyntax::StructDeclaration &);
+		virtual void visit(ProgramSyntax::VariableDeclaration &);
+		virtual void visit(ProgramSyntax::InterfaceBlock &);
+	};
+
+	struct InterfaceGenerator: Visitor
+	{
+		std::string in_prefix;
+		std::string out_prefix;
+		unsigned scope_level;
+		std::map<std::string, ProgramSyntax::VariableDeclaration *> iface_declarations;
+		bool remove_node;
+		std::list<ProgramSyntax::Node *> insert_nodes;
+
+		InterfaceGenerator();
+
+		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 &);
+		void insert_assignment(const std::string &, ProgramSyntax::Expression *);
+		virtual void visit(ProgramSyntax::VariableReference &);
+		virtual void visit(ProgramSyntax::VariableDeclaration &);
+		virtual void visit(ProgramSyntax::Passthrough &);
+	};
+
+	struct VariableRenamer: Visitor
+	{
+		virtual void visit(ProgramSyntax::VariableReference &);
+		virtual void visit(ProgramSyntax::VariableDeclaration &);
+	};
+
+	struct UnusedVariableLocator: Visitor
+	{
+		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: Visitor
+	{
+		std::set<ProgramSyntax::Node *> to_remove;
+		unsigned n_removed;
+		bool immutable_block;
+		bool remove_block;
+
+		NodeRemover();
+
+		virtual void visit(ProgramSyntax::Block &);
+		virtual void visit(ProgramSyntax::StructDeclaration &);
+		virtual void visit(ProgramSyntax::VariableDeclaration &);
+		virtual void visit(ProgramSyntax::InterfaceBlock &);
+	};
+
 	ProgramParser parser;
 	ProgramSyntax::Module *module;
 
@@ -52,7 +137,13 @@ public:
 	void add_shaders(Program &);
 
 private:
-	std::string format_context(ProgramSyntax::Context &);
+	void process();
+	void generate(ProgramSyntax::Stage &);
+	bool optimize(ProgramSyntax::Stage &);
+	static void inject_block(ProgramSyntax::Block &, const ProgramSyntax::Block &);
+	template<typename T>
+	static void apply(ProgramSyntax::Stage &);
+	std::string create_source(ProgramSyntax::Stage &);
 };
 
 } // namespace GL