X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fprogramcompiler.h;h=8681d3638a032cabd389879922fe7378c4a45a76;hb=f1c6ef565577ac322693255d764eea1f2cab9e77;hp=0c87acf0b953a40198b60299f4288b57a0c59cbe;hpb=a0caabaed3aeb8947133d78986bfb4ae5ae3c893;p=libs%2Fgl.git

diff --git a/source/programcompiler.h b/source/programcompiler.h
index 0c87acf0..8681d363 100644
--- a/source/programcompiler.h
+++ b/source/programcompiler.h
@@ -108,6 +108,14 @@ private:
 		virtual void visit(ProgramSyntax::InterfaceBlock &);
 	};
 
+	struct FunctionResolver: Visitor
+	{
+		std::map<std::string, std::vector<ProgramSyntax::FunctionDeclaration *> > functions;
+
+		virtual void visit(ProgramSyntax::FunctionCall &);
+		virtual void visit(ProgramSyntax::FunctionDeclaration &);
+	};
+
 	struct InterfaceGenerator: Visitor
 	{
 		std::string in_prefix;
@@ -136,6 +144,39 @@ private:
 		virtual void visit(ProgramSyntax::VariableDeclaration &);
 	};
 
+	struct ExpressionEvaluator: ProgramSyntax::NodeVisitor
+	{
+		typedef std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Expression *> ValueMap;
+
+		const ValueMap *variable_values;
+		float result;
+		bool result_valid;
+
+		ExpressionEvaluator();
+		ExpressionEvaluator(const ValueMap &);
+
+		virtual void visit(ProgramSyntax::Literal &);
+		virtual void visit(ProgramSyntax::VariableReference &);
+		virtual void visit(ProgramSyntax::UnaryExpression &);
+		virtual void visit(ProgramSyntax::BinaryExpression &);
+	};
+
+	struct ConstantConditionEliminator: Visitor
+	{
+		unsigned scope_level;
+		ExpressionEvaluator::ValueMap variable_values;
+		bool remove_node;
+		ProgramSyntax::Block *replacement_block;
+
+		ConstantConditionEliminator();
+
+		virtual void visit(ProgramSyntax::Block &);
+		virtual void visit(ProgramSyntax::Assignment &);
+		virtual void visit(ProgramSyntax::VariableDeclaration &);
+		virtual void visit(ProgramSyntax::Conditional &);
+		virtual void visit(ProgramSyntax::Iteration &);
+	};
+
 	struct UnusedVariableLocator: Visitor
 	{
 		struct AssignmentList
@@ -174,6 +215,18 @@ private:
 		virtual void visit(ProgramSyntax::Iteration &);
 	};
 
+	struct UnusedFunctionLocator: Visitor
+	{
+		typedef std::set<ProgramSyntax::Node *> ResultType;
+
+		std::set<ProgramSyntax::Node *> unused_nodes;
+		std::set<ProgramSyntax::FunctionDeclaration *> used_definitions;
+
+		const ResultType &get_result() const { return unused_nodes; }
+		virtual void visit(ProgramSyntax::FunctionCall &);
+		virtual void visit(ProgramSyntax::FunctionDeclaration &);
+	};
+
 	struct NodeRemover: Visitor
 	{
 		std::set<ProgramSyntax::Node *> to_remove;