Remove unused variable and struct declarations from the syntax tree

[libs/gl.git] / source / programsyntax.cpp

diff --git a/source/programsyntax.cpp b/source/programsyntax.cpp
index 5b39d7f3036a4f90e9f495f9ff2f172e02cc59e2..f64493eed2a116fae42a88791a6183a084c06e0a 100644 (file)
--- a/source/programsyntax.cpp
+++ b/source/programsyntax.cpp
@@ -28,6 +28,10 @@ void ParenthesizedExpression::visit(NodeVisitor &visitor)
 }
 
 
+VariableReference::VariableReference():
+       declaration(0)
+{ }
+
 void VariableReference::visit(NodeVisitor &visitor)
 {
        visitor.visit(*this);
@@ -95,6 +99,7 @@ void StructDeclaration::visit(NodeVisitor &visitor)
 
 VariableDeclaration::VariableDeclaration():
        constant(false),
+       type_declaration(0),
        array(false)
 { }
 
@@ -143,6 +148,93 @@ void Iteration::visit(NodeVisitor &visitor)
 }
 
 
+void TraversingVisitor::visit(Block &block)
+{
+       for(list<NodePtr<Node> >::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(vector<NodePtr<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(StructDeclaration &strct)
+{
+       strct.members.visit(*this);
+}
+
+void TraversingVisitor::visit(VariableDeclaration &var)
+{
+       if(var.init_expression)
+               var.init_expression->visit(*this);
+       if(var.array_size)
+               var.array_size->visit(*this);
+}
+
+void TraversingVisitor::visit(InterfaceBlock &iface)
+{
+       iface.members.visit(*this);
+}
+
+void TraversingVisitor::visit(FunctionDeclaration &func)
+{
+       for(vector<NodePtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
+               (*i)->visit(*this);
+       func.body.visit(*this);
+}
+
+void TraversingVisitor::visit(Conditional &cond)
+{
+       cond.condition->visit(*this);
+       cond.body.visit(*this);
+       cond.else_body.visit(*this);
+}
+
+void TraversingVisitor::visit(Iteration &iter)
+{
+       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);
+}
+
+void TraversingVisitor::visit(Return &ret)
+{
+       if(ret.expression)
+               ret.expression->visit(*this);
+}
+
+
 Context::Context(ContextType t):
        type(t),
        present(false)