-
-VariableResolver::VariableResolver():
- stage(0),
- builtins(0),
- members(0),
- record_target(false),
- assignment_target(0),
- self_referencing(false)
-{ }
-
-void VariableResolver::apply(Stage &s)
-{
- stage = &s;
- Stage *builtin_stage = get_builtins(s.type);
- builtins = (builtin_stage ? &builtin_stage->content : 0);
- s.content.visit(*this);
-}
-
-Block *VariableResolver::next_block(Block &block)
-{
- return block.parent ? block.parent : &block!=builtins ? builtins : 0;
-}
-
-void VariableResolver::enter(Block &block)
-{
- block.variables.clear();
-}
-
-void VariableResolver::visit(VariableReference &var)
-{
- var.declaration = 0;
- members = 0;
- for(Block *block=current_block; (!var.declaration && block); block=next_block(*block))
- {
- map<string, VariableDeclaration *>::iterator i = block->variables.find(var.name);
- if(i!=block->variables.end())
- var.declaration = i->second;
- }
-
- if(var.declaration)
- {
- if(var.declaration->type_declaration)
- members = &var.declaration->type_declaration->members.variables;
- }
- else
- {
- const map<string, InterfaceBlock *> &blocks = stage->interface_blocks;
- map<string, InterfaceBlock *>::const_iterator i = blocks.find(var.name);
- if(i!=blocks.end() && i->second->instance_name==var.name)
- {
- iface_ref = new InterfaceBlockReference;
- iface_ref->name = var.name;
- iface_ref->declaration = i->second;
- members = &i->second->members.variables;
- }
- else
- {
- for(i=blocks.begin(); (!var.declaration && i!=blocks.end()); ++i)
- if(i->second->instance_name.empty())
- {
- map<string, VariableDeclaration *>::iterator j = i->second->members.variables.find(var.name);
- if(j!=i->second->members.variables.end())
- var.declaration = j->second;
- }
- }
- }
-
- if(record_target)
- {
- if(assignment_target)
- {
- record_target = false;
- assignment_target = 0;
- }
- else
- assignment_target = var.declaration;
- }
- else if(var.declaration && var.declaration==assignment_target)
- self_referencing = true;
-}
-
-void VariableResolver::visit(InterfaceBlockReference &iface)
-{
- iface.declaration = 0;
- for(Block *block=current_block; block; block=next_block(*block))
- {
- map<string, InterfaceBlock *>::iterator i = stage->interface_blocks.find(iface.name);
- if(i!=stage->interface_blocks.end())
- {
- iface.declaration = i->second;
- members = &i->second->members.variables;
- break;
- }
- }
-}
-
-void VariableResolver::visit(MemberAccess &memacc)
-{
- members = 0;
- iface_ref = 0;
- memacc.left->visit(*this);
-
- if(iface_ref)
- memacc.left = iface_ref;
- iface_ref = 0;
-
- memacc.declaration = 0;
- if(members)
- {
- map<string, VariableDeclaration *>::iterator i = members->find(memacc.member);
- if(i!=members->end())
- {
- memacc.declaration = i->second;
- if(i->second->type_declaration)
- members = &i->second->type_declaration->members.variables;
- }
- else
- members = 0;
- }
-}
-
-void VariableResolver::visit(BinaryExpression &binary)
-{
- if(binary.oper=="[")
- {
- {
- SetForScope<bool> set(record_target, false);
- binary.right->visit(*this);
- }
- members = 0;
- iface_ref = 0;
- binary.left->visit(*this);
- if(iface_ref)
- binary.left = iface_ref;
- iface_ref = 0;
- }
- else
- {
- TraversingVisitor::visit(binary);
- members = 0;