X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fsyntax.cpp;h=e7a3990e5c1478b3fcdf8e5727226b05ba688582;hb=22d5405729048ee2677a1e45e309e6328de64a26;hp=9705c989370d87b6672c7fc543a8fc9710c46502;hpb=c1b0303f65ee966a973197cbdbf177c571478674;p=libs%2Fgl.git

diff --git a/source/glsl/syntax.cpp b/source/glsl/syntax.cpp
index 9705c989..e7a3990e 100644
--- a/source/glsl/syntax.cpp
+++ b/source/glsl/syntax.cpp
@@ -1,4 +1,6 @@
+#include <msp/core/maputils.h>
 #include "syntax.h"
+#include "visitor.h"
 
 using namespace std;
 
@@ -6,6 +8,63 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
+const Operator Operator::operators[] =
+{
+	{ "[", "]", 2, BINARY, LEFT_TO_RIGHT },
+	{ "(", ")", 2, POSTFIX, LEFT_TO_RIGHT },
+	{ ".", { }, 2, POSTFIX, LEFT_TO_RIGHT },
+	{ "++", { }, 2, POSTFIX, LEFT_TO_RIGHT },
+	{ "--", { }, 2, POSTFIX, LEFT_TO_RIGHT },
+	{ "++", { }, 3, PREFIX, RIGHT_TO_LEFT },
+	{ "--", { }, 3, PREFIX, RIGHT_TO_LEFT },
+	{ "+", { }, 3, PREFIX, RIGHT_TO_LEFT },
+	{ "-", { }, 3, PREFIX, RIGHT_TO_LEFT },
+	{ "~", { }, 3, PREFIX, RIGHT_TO_LEFT },
+	{ "!", { }, 3, PREFIX, RIGHT_TO_LEFT },
+	{ "*", { }, 4, BINARY, ASSOCIATIVE },
+	{ "/", { }, 4, BINARY, LEFT_TO_RIGHT },
+	{ "%", { }, 4, BINARY, LEFT_TO_RIGHT },
+	{ "+", { }, 5, BINARY, ASSOCIATIVE },
+	{ "-", { }, 5, BINARY, LEFT_TO_RIGHT },
+	{ "<<", { }, 6, BINARY, LEFT_TO_RIGHT },
+	{ ">>", { }, 6, BINARY, LEFT_TO_RIGHT },
+	{ "<", { }, 7, BINARY, LEFT_TO_RIGHT },
+	{ ">", { }, 7, BINARY, LEFT_TO_RIGHT },
+	{ "<=", { }, 7, BINARY, LEFT_TO_RIGHT },
+	{ ">=", { }, 7, BINARY, LEFT_TO_RIGHT },
+	{ "==", { }, 8, BINARY, LEFT_TO_RIGHT },
+	{ "!=", { }, 8, BINARY, LEFT_TO_RIGHT },
+	{ "&", { }, 9, BINARY, ASSOCIATIVE },
+	{ "^", { }, 10, BINARY, ASSOCIATIVE },
+	{ "|", { }, 11, BINARY, ASSOCIATIVE },
+	{ "&&", { }, 12, BINARY, ASSOCIATIVE },
+	{ "^^", { }, 13, BINARY, ASSOCIATIVE },
+	{ "||", { }, 14, BINARY, ASSOCIATIVE },
+	{ "?", ":", 15, TERNARY, RIGHT_TO_LEFT },
+	{ "=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "+=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "-=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "*=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "/=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "%=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "<<=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ ">>=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "&=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "^=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ "|=", { }, 16, BINARY, RIGHT_TO_LEFT },
+	{ ",", { }, 17, BINARY, LEFT_TO_RIGHT },
+	{ { 0 }, { }, 18, NO_OPERATOR, LEFT_TO_RIGHT }
+};
+
+const Operator &Operator::get_operator(const string &token, Type type)
+{
+	for(const Operator *i=operators; i->type; ++i)
+		if(i->type==type && i->token==token)
+			return *i;
+	throw key_error(token);
+}
+
+
 template<typename C>
 NodeContainer<C>::NodeContainer(const NodeContainer &c):
 	C(c)
@@ -15,14 +74,16 @@ NodeContainer<C>::NodeContainer(const NodeContainer &c):
 }
 
 
-Statement::Statement():
-	source(0),
-	line(1)
+Block::Block():
+	use_braces(false),
+	parent(0)
 { }
 
-
-Block::Block():
-	use_braces(false)
+Block::Block(const Block &other):
+	Node(other),
+	body(other.body),
+	use_braces(other.use_braces),
+	parent(0)
 { }
 
 void Block::visit(NodeVisitor &visitor)
@@ -31,37 +92,79 @@ void Block::visit(NodeVisitor &visitor)
 }
 
 
+Expression::Expression():
+	oper(0),
+	type(0),
+	lvalue(false)
+{ }
+
+
 void Literal::visit(NodeVisitor &visitor)
 {
 	visitor.visit(*this);
 }
 
 
-void ParenthesizedExpression::visit(NodeVisitor &visitor)
+VariableReference::VariableReference():
+	declaration(0)
+{ }
+
+VariableReference::VariableReference(const VariableReference &other):
+	Expression(other),
+	name(other.name),
+	declaration(0)
+{ }
+
+void VariableReference::visit(NodeVisitor &visitor)
 {
 	visitor.visit(*this);
 }
 
 
-VariableReference::VariableReference():
+InterfaceBlockReference::InterfaceBlockReference():
 	declaration(0)
 { }
 
-void VariableReference::visit(NodeVisitor &visitor)
+InterfaceBlockReference::InterfaceBlockReference(const InterfaceBlockReference &other):
+	Expression(other),
+	name(other.name),
+	declaration(0)
+{ }
+
+void InterfaceBlockReference::visit(NodeVisitor &visitor)
 {
 	visitor.visit(*this);
 }
 
 
+MemberAccess::MemberAccess():
+	declaration(0)
+{ }
+
+MemberAccess::MemberAccess(const MemberAccess &other):
+	Expression(other),
+	left(other.left),
+	member(other.member),
+	declaration(0)
+{ }
+
 void MemberAccess::visit(NodeVisitor &visitor)
 {
 	visitor.visit(*this);
 }
 
 
-UnaryExpression::UnaryExpression():
-	prefix(true)
-{ }
+Swizzle::Swizzle():
+	count(0)
+{
+	fill(components, components+4, 0);
+}
+
+void Swizzle::visit(NodeVisitor &visitor)
+{
+	visitor.visit(*this);
+}
+
 
 void UnaryExpression::visit(NodeVisitor &visitor)
 {
@@ -76,8 +179,12 @@ void BinaryExpression::visit(NodeVisitor &visitor)
 
 
 Assignment::Assignment():
-	self_referencing(false),
-	target_declaration(0)
+	self_referencing(false)
+{ }
+
+Assignment::Assignment(const Assignment &other):
+	BinaryExpression(other),
+	self_referencing(other.self_referencing)
 { }
 
 void Assignment::visit(NodeVisitor &visitor)
@@ -86,9 +193,41 @@ void Assignment::visit(NodeVisitor &visitor)
 }
 
 
+Assignment::Target::Target(Statement *d):
+	declaration(d),
+	chain_len(0)
+{
+	fill(chain, chain+7, 0);
+}
+
+bool Assignment::Target::operator<(const Target &other) const
+{
+	if(declaration!=other.declaration)
+		return declaration<other.declaration;
+	for(unsigned i=0; (i<7 && i<chain_len && i<other.chain_len); ++i)
+		if(chain[i]!=other.chain[i])
+			return chain[i]<other.chain[i];
+	return chain_len<other.chain_len;
+}
+
+
+void TernaryExpression::visit(NodeVisitor &visitor)
+{
+	visitor.visit(*this);
+}
+
+
 FunctionCall::FunctionCall():
-	declaration(0),
-	constructor(false)
+	constructor(false),
+	declaration(0)
+{ }
+
+FunctionCall::FunctionCall(const FunctionCall &other):
+	Expression(other),
+	name(other.name),
+	constructor(other.constructor),
+	arguments(other.arguments),
+	declaration(0)
 { }
 
 void FunctionCall::visit(NodeVisitor &visitor)
@@ -127,11 +266,57 @@ void InterfaceLayout::visit(NodeVisitor &visitor)
 }
 
 
-StructDeclaration::StructDeclaration()
+BasicTypeDeclaration::BasicTypeDeclaration():
+	kind(ALIAS),
+	size(0),
+	base_type(0)
+{ }
+
+BasicTypeDeclaration::BasicTypeDeclaration(const BasicTypeDeclaration &other):
+	TypeDeclaration(other),
+	kind(other.kind),
+	size(other.size),
+	base(other.base),
+	base_type(0)
+{ }
+
+void BasicTypeDeclaration::visit(NodeVisitor &visitor)
+{
+	visitor.visit(*this);
+}
+
+
+ImageTypeDeclaration::ImageTypeDeclaration():
+	dimensions(TWO),
+	array(false),
+	sampled(true),
+	shadow(false)
+{ }
+
+void ImageTypeDeclaration::visit(NodeVisitor &visitor)
+{
+	visitor.visit(*this);
+}
+
+
+StructDeclaration::StructDeclaration():
+	interface_block(0)
 {
 	members.use_braces = true;
 }
 
+StructDeclaration::StructDeclaration(const StructDeclaration &other):
+	TypeDeclaration(other),
+	members(other.members),
+	interface_block(0)
+{ }
+
+StructDeclaration::~StructDeclaration()
+{
+	if(interface_block && interface_block->struct_declaration==this)
+		interface_block->struct_declaration = 0;
+}
+
 void StructDeclaration::visit(NodeVisitor &visitor)
 {
 	visitor.visit(*this);
@@ -140,11 +325,34 @@ void StructDeclaration::visit(NodeVisitor &visitor)
 
 VariableDeclaration::VariableDeclaration():
 	constant(false),
-	type_declaration(0),
 	array(false),
+	type_declaration(0),
+	linked_declaration(0)
+{ }
+
+VariableDeclaration::VariableDeclaration(const VariableDeclaration &other):
+	Statement(other),
+	layout(other.layout),
+	constant(other.constant),
+	sampling(other.sampling),
+	interpolation(other.interpolation),
+	interface(other.interface),
+	precision(other.precision),
+	type(other.type),
+	name(other.name),
+	array(other.array),
+	array_size(other.array_size),
+	init_expression(other.init_expression),
+	type_declaration(0),
 	linked_declaration(0)
 { }
 
+VariableDeclaration::~VariableDeclaration()
+{
+	if(linked_declaration && linked_declaration->linked_declaration==this)
+		linked_declaration->linked_declaration = 0;
+}
+
 void VariableDeclaration::visit(NodeVisitor &visitor)
 {
 	visitor.visit(*this);
@@ -152,9 +360,30 @@ void VariableDeclaration::visit(NodeVisitor &visitor)
 
 
 InterfaceBlock::InterfaceBlock():
-	array(false)
+	array(false),
+	type_declaration(0),
+	struct_declaration(0),
+	linked_block(0)
+{ }
+
+InterfaceBlock::InterfaceBlock(const InterfaceBlock &other):
+	Statement(other),
+	interface(other.interface),
+	name(other.name),
+	members(other.members),
+	instance_name(other.instance_name),
+	array(other.array),
+	type_declaration(0),
+	struct_declaration(0),
+	linked_block(0)
+{ }
+
+InterfaceBlock::~InterfaceBlock()
 {
-	members.use_braces = true;
+	if(linked_block && linked_block->linked_block==this)
+		linked_block->linked_block = 0;
+	if(struct_declaration && struct_declaration->interface_block==this)
+		struct_declaration->interface_block = 0;
 }
 
 void InterfaceBlock::visit(NodeVisitor &visitor)
@@ -164,15 +393,23 @@ void InterfaceBlock::visit(NodeVisitor &visitor)
 
 
 FunctionDeclaration::FunctionDeclaration():
-	definition(0)
+	virtua(false),
+	overrd(false),
+	definition(0),
+	return_type_declaration(0)
 { }
 
 FunctionDeclaration::FunctionDeclaration(const FunctionDeclaration &other):
+	Statement(other),
 	return_type(other.return_type),
 	name(other.name),
 	parameters(other.parameters),
-	definition(other.definition==&other ? this : other.definition),
-	body(other.body)
+	virtua(other.virtua),
+	overrd(other.overrd),
+	body(other.body),
+	signature(other.signature),
+	definition(other.definition==&other ? this : 0),
+	return_type_declaration(0)
 { }
 
 void FunctionDeclaration::visit(NodeVisitor &visitor)
@@ -211,123 +448,43 @@ void Jump::visit(NodeVisitor &visitor)
 }
 
 
-void NodeVisitor::visit(Assignment &assign)
-{
-	visit(static_cast<BinaryExpression &>(assign));
-}
-
-
-void TraversingVisitor::visit(Block &block)
-{
-	for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); ++i)
-		(*i)->visit(*this);
-}
-
-void TraversingVisitor::visit(ParenthesizedExpression &parexpr)
-{
-	parexpr.expression->visit(*this);
-}
-
-void TraversingVisitor::visit(MemberAccess &memacc)
-{
-	memacc.left->visit(*this);
-}
-
-void TraversingVisitor::visit(UnaryExpression &unary)
-{
-	unary.expression->visit(*this);
-}
-
-void TraversingVisitor::visit(BinaryExpression &binary)
-{
-	binary.left->visit(*this);
-	binary.right->visit(*this);
-}
-
-void TraversingVisitor::visit(FunctionCall &call)
-{
-	for(NodeArray<Expression>::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
-		(*i)->visit(*this);
-}
-
-void TraversingVisitor::visit(ExpressionStatement &expr)
-{
-	expr.expression->visit(*this);
-}
-
-void TraversingVisitor::visit(InterfaceLayout &layout)
-{
-	layout.layout.visit(*this);
-}
-
-void TraversingVisitor::visit(StructDeclaration &strct)
-{
-	strct.members.visit(*this);
-}
+Stage::Stage(Stage::Type t):
+	type(t),
+	previous(0)
+{ }
 
-void TraversingVisitor::visit(VariableDeclaration &var)
+const char *Stage::get_stage_name(Type type)
 {
-	if(var.layout)
-		var.layout->visit(*this);
-	if(var.init_expression)
-		var.init_expression->visit(*this);
-	if(var.array_size)
-		var.array_size->visit(*this);
+	static const char *names[] = { "shared", "vertex", "geometry", "fragment" };
+	return names[type];
 }
 
-void TraversingVisitor::visit(InterfaceBlock &iface)
-{
-	iface.members.visit(*this);
-}
 
-void TraversingVisitor::visit(FunctionDeclaration &func)
-{
-	for(NodeArray<VariableDeclaration>::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
-		(*i)->visit(*this);
-	func.body.visit(*this);
-}
+Module::Module():
+	shared(Stage::SHARED)
+{ }
 
-void TraversingVisitor::visit(Conditional &cond)
-{
-	cond.condition->visit(*this);
-	cond.body.visit(*this);
-	cond.else_body.visit(*this);
-}
 
-void TraversingVisitor::visit(Iteration &iter)
+string get_unused_variable_name(const Block &block, const string &base)
 {
-	if(iter.init_statement)
-		iter.init_statement->visit(*this);
-	if(iter.condition)
-		iter.condition->visit(*this);
-	if(iter.loop_expression)
-		iter.loop_expression->visit(*this);
-	iter.body.visit(*this);
-}
+	string name = base;
 
-void TraversingVisitor::visit(Passthrough &pass)
-{
-	if(pass.subscript)
-		pass.subscript->visit(*this);
-}
+	unsigned number = 1;
+	unsigned base_size = name.size();
+	while(1)
+	{
+		bool unused = true;
+		for(const Block *b=&block; (unused && b); b=b->parent)
+			unused = !b->variables.count(name);
+		if(unused)
+			return name;
 
-void TraversingVisitor::visit(Return &ret)
-{
-	if(ret.expression)
-		ret.expression->visit(*this);
+		name.erase(base_size);
+		name += format("_%d", number);
+		++number;
+	}
 }
 
-
-Stage::Stage(StageType t):
-	type(t),
-	previous(0)
-{ }
-
-
-Module::Module():
-	shared(SHARED)
-{ }
-
 } // namespace SL
 } // namespace GL
 } // namespace Msp