X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fprogramsyntax.h;h=9545760c47b31bd8cfa98f61ee59ef626d2d851c;hb=a0caabaed3aeb8947133d78986bfb4ae5ae3c893;hp=0013d82a97a7cd8c890e3f0a4456ae5dd4875400;hpb=6e6ee01b68056b23c6709d7f60396710dd7623b9;p=libs%2Fgl.git

diff --git a/source/programsyntax.h b/source/programsyntax.h
index 0013d82a..9545760c 100644
--- a/source/programsyntax.h
+++ b/source/programsyntax.h
@@ -1,6 +1,7 @@
 #ifndef MSP_GL_PROGRAMSYNTAX_H_
 #define MSP_GL_PROGRAMSYNTAX_H_
 
+#include <list>
 #include <map>
 #include <string>
 #include <vector>
@@ -13,33 +14,159 @@ struct NodeVisitor;
 
 struct Node
 {
+private:
+	Node &operator=(const Node &);
+public:
 	virtual ~Node() { }
 
+	virtual Node *clone() const = 0;
 	virtual void visit(NodeVisitor &) = 0;
 };
 
+template<typename T>
+class NodePtr
+{
+private:
+	T *node;
+
+public:
+	NodePtr(T *n = 0): node(n) { }
+	NodePtr(const NodePtr &p): node(clone(p.node)) { }
+	NodePtr &operator=(const NodePtr &p) { delete node; node = clone(p.node); return *this; }
+#if __cplusplus>=201103L
+	NodePtr(NodePtr &&p): node(p.node) { p.node = 0; }
+	NodePtr &operator=(NodePtr &&p) { delete node; node = p.node; p.node = 0; return *this; }
+#endif
+	~NodePtr() { delete node; }
+
+private:
+	static T *clone(T *n) { return n ? n->clone() : 0; }
+
+public:
+	T *operator->() { return node; }
+	const T *operator->() const { return node; }
+	T &operator*() { return *node; }
+	const T &operator*() const { return *node; }
+	operator void *() const { return node; }
+};
+
+struct StructDeclaration;
+struct VariableDeclaration;
+
 struct Block: Node
 {
-	std::vector<Node *> body;
+	std::list<NodePtr<Node> > body;
 	bool use_braces;
+	std::map<std::string, StructDeclaration *> types;
+	std::map<std::string, VariableDeclaration *> variables;
 
 	Block();
-	virtual ~Block();
 
+	virtual Block *clone() const { return new Block(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
-struct Expression
+struct Expression: Node
 {
-	std::vector<std::string> tokens;
+	virtual Expression *clone() const = 0;
+};
 
-	bool empty() const { return tokens.empty(); }
+struct Literal: Expression
+{
+	std::string token;
+
+	virtual Literal *clone() const { return new Literal(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct ParenthesizedExpression: Expression
+{
+	NodePtr<Expression> expression;
+
+	virtual ParenthesizedExpression *clone() const { return new ParenthesizedExpression(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct VariableReference: Expression
+{
+	std::string name;
+	VariableDeclaration *declaration;
+
+	VariableReference();
+
+	virtual VariableReference *clone() const { return new VariableReference(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct MemberAccess: Expression
+{
+	NodePtr<Expression> left;
+	std::string member;
+	VariableDeclaration *declaration;
+
+	virtual MemberAccess *clone() const { return new MemberAccess(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct UnaryExpression: Expression
+{
+	std::string oper;
+	NodePtr<Expression> expression;
+	bool prefix;
+
+	UnaryExpression();
+
+	virtual UnaryExpression *clone() const { return new UnaryExpression(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct BinaryExpression: Expression
+{
+	NodePtr<Expression> left;
+	std::string oper;
+	NodePtr<Expression> right;
+	std::string after;
+
+	virtual BinaryExpression *clone() const { return new BinaryExpression(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct Assignment: BinaryExpression
+{
+	bool self_referencing;
+	VariableDeclaration *target_declaration;
+
+	Assignment();
+
+	virtual Assignment *clone() const { return new Assignment(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct FunctionCall: Expression
+{
+	std::string name;
+	bool constructor;
+	std::vector<NodePtr<Expression> > arguments;
+
+	FunctionCall();
+
+	virtual FunctionCall *clone() const { return new FunctionCall(*this); }
+	virtual void visit(NodeVisitor &);
 };
 
 struct ExpressionStatement: Node
 {
-	Expression expression;
+	NodePtr<Expression> expression;
+
+	virtual ExpressionStatement *clone() const { return new ExpressionStatement(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct Import: Node
+{
+	std::string module;
 
+	virtual Import *clone() const { return new Import(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
@@ -54,6 +181,7 @@ struct Layout: Node
 	std::vector<Qualifier> qualifiers;
 	std::string interface;
 
+	virtual Layout *clone() const { return new Layout(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
@@ -64,6 +192,7 @@ struct StructDeclaration: Node
 
 	StructDeclaration();
 
+	virtual StructDeclaration *clone() const { return new StructDeclaration(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
@@ -73,13 +202,16 @@ struct VariableDeclaration: Node
 	std::string sampling;
 	std::string interface;
 	std::string type;
+	StructDeclaration *type_declaration;
 	std::string name;
 	bool array;
-	Expression array_size;
-	Expression init_expression;
+	NodePtr<Expression> array_size;
+	NodePtr<Expression> init_expression;
+	VariableDeclaration *linked_declaration;
 
 	VariableDeclaration();
 
+	virtual VariableDeclaration *clone() const { return new VariableDeclaration(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
@@ -88,9 +220,12 @@ struct InterfaceBlock: Node
 	std::string interface;
 	std::string name;
 	Block members;
+	std::string instance_name;
+	bool array;
 
 	InterfaceBlock();
 
+	virtual InterfaceBlock *clone() const { return new InterfaceBlock(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
@@ -98,42 +233,51 @@ struct FunctionDeclaration: Node
 {
 	std::string return_type;
 	std::string name;
-	std::vector<VariableDeclaration *> parameters;
-	bool definition;
+	std::vector<NodePtr<VariableDeclaration> > parameters;
+	FunctionDeclaration *definition;
 	Block body;
 
 	FunctionDeclaration();
-	~FunctionDeclaration();
+	FunctionDeclaration(const FunctionDeclaration &);
 
+	virtual FunctionDeclaration *clone() const { return new FunctionDeclaration(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
 struct Conditional: Node
 {
-	Expression condition;
+	NodePtr<Expression> condition;
 	Block body;
 	Block else_body;
 
+	virtual Conditional *clone() const { return new Conditional(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
 struct Iteration: Node
 {
-	Node *init_statement;
-	Expression condition;
-	Expression loop_expression;
+	NodePtr<Node> init_statement;
+	NodePtr<Expression> condition;
+	NodePtr<Expression> loop_expression;
 	Block body;
 
-	Iteration();
-	virtual ~Iteration();
+	virtual Iteration *clone() const { return new Iteration(*this); }
+	virtual void visit(NodeVisitor &);
+};
+
+struct Passthrough: Node
+{
+	NodePtr<Expression> subscript;
 
+	virtual Passthrough *clone() const { return new Passthrough(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
 struct Return: Node
 {
-	Expression expression;
+	NodePtr<Expression> expression;
 
+	virtual Return *clone() const { return new Return(*this); }
 	virtual void visit(NodeVisitor &);
 };
 
@@ -142,7 +286,16 @@ struct NodeVisitor
 	virtual ~NodeVisitor() { }
 
 	virtual void visit(Block &) { }
+	virtual void visit(Literal &) { }
+	virtual void visit(ParenthesizedExpression &) { }
+	virtual void visit(VariableReference &) { }
+	virtual void visit(MemberAccess &) { }
+	virtual void visit(UnaryExpression &) { }
+	virtual void visit(BinaryExpression &) { }
+	virtual void visit(Assignment &);
+	virtual void visit(FunctionCall &) { }
 	virtual void visit(ExpressionStatement &) { }
+	virtual void visit(Import &) { }
 	virtual void visit(Layout &) { }
 	virtual void visit(StructDeclaration &) { }
 	virtual void visit(VariableDeclaration &) { }
@@ -150,33 +303,52 @@ struct NodeVisitor
 	virtual void visit(FunctionDeclaration &) { }
 	virtual void visit(Conditional &) { }
 	virtual void visit(Iteration &) { }
+	virtual void visit(Passthrough &) { }
 	virtual void visit(Return &) { }
 };
 
-enum ContextType
+struct TraversingVisitor: NodeVisitor
+{
+	virtual void visit(Block &);
+	virtual void visit(ParenthesizedExpression &);
+	virtual void visit(MemberAccess &);
+	virtual void visit(UnaryExpression &);
+	virtual void visit(BinaryExpression &);
+	virtual void visit(FunctionCall &);
+	virtual void visit(ExpressionStatement &);
+	virtual void visit(StructDeclaration &);
+	virtual void visit(VariableDeclaration &);
+	virtual void visit(InterfaceBlock &);
+	virtual void visit(FunctionDeclaration &);
+	virtual void visit(Conditional &);
+	virtual void visit(Iteration &);
+	virtual void visit(Passthrough &);
+	virtual void visit(Return &);
+};
+
+enum StageType
 {
-	GLOBAL,
+	SHARED,
 	VERTEX,
 	GEOMETRY,
 	FRAGMENT
 };
 
-struct Context
+struct Stage
 {
-	ContextType type;
-	bool present;
+	StageType type;
+	Stage *previous;
 	ProgramSyntax::Block content;
+	std::map<std::string, VariableDeclaration *> in_variables;
+	std::map<std::string, VariableDeclaration *> out_variables;
 
-	Context(ContextType);
+	Stage(StageType);
 };
 
 struct Module
 {
-	Context global_context;
-	Context vertex_context;
-	Context geometry_context;
-	Context fragment_context;
-	std::map<std::string, StructDeclaration *> structs;
+	Stage shared;
+	std::list<Stage> stages;
 
 	Module();
 };