Check for function declaration conflicting with something else

[libs/gl.git] / source / glsl / validate.cpp

diff --git a/source/glsl/validate.cpp b/source/glsl/validate.cpp
index 6368c069244629217b32f04bb78987d3784f39b7..f3390048298e2708db5e307e37b0832144c7c2dd 100644 (file)
--- a/source/glsl/validate.cpp
+++ b/source/glsl/validate.cpp
@@ -30,6 +30,12 @@ DeclarationValidator::DeclarationValidator():
        anonymous_block(false)
 { }
 
+void DeclarationValidator::multiple_definition(const string &name, Statement &statement, Statement &previous)
+{
+       error(&statement, format("Multiple definition of %s", name));
+       diagnose(&previous, Diagnostic::INFO, "Previous definition is here");
+}
+
 Statement *DeclarationValidator::find_definition(const string &name)
 {
        BlockDeclarationMap *decls = &declarations[current_block];
@@ -45,15 +51,16 @@ Statement *DeclarationValidator::find_definition(const string &name)
 void DeclarationValidator::check_definition(const string &name, Statement &statement)
 {
        if(Statement *previous = find_definition(name))
-       {
-               error(&statement, format("Multiple definition of '%s'", name));
-               diagnose(previous, Diagnostic::INFO, "Previous definition is here");
-               return;
-       }
+               multiple_definition(format("'%s'", name), statement, *previous);
+       else
+               record_definition(name, statement);
+}
 
-       declarations[current_block][name] = &statement;
+void DeclarationValidator::record_definition(const string &name, Statement &statement)
+{
+       declarations[current_block].insert(make_pair(name, &statement));
        if(anonymous_block)
-               declarations[current_block->parent][name] = &statement;
+               declarations[current_block->parent].insert(make_pair(name, &statement));
 }
 
 void DeclarationValidator::visit(VariableDeclaration &var)
@@ -64,15 +71,34 @@ void DeclarationValidator::visit(VariableDeclaration &var)
 
 void DeclarationValidator::visit(InterfaceBlock &iface)
 {
-       check_definition(iface.name, iface);
+       string key = iface.interface+iface.name;
+       map<string, InterfaceBlock *>::const_iterator i = interface_blocks.find(key);
+       if(i!=interface_blocks.end())
+               multiple_definition(format("interface block '%s %s'", iface.interface, iface.name), iface, *i->second);
+       else
+               interface_blocks.insert(make_pair(key, &iface));
+
+       if(Statement *previous = find_definition(iface.name))
+       {
+               if(!dynamic_cast<InterfaceBlock *>(previous))
+                       multiple_definition(format("'%s'", iface.name), iface, *previous);
+       }
+       else
+               record_definition(iface.name, iface);
+
        if(!iface.instance_name.empty())
                check_definition(iface.instance_name, iface);
+
        SetFlag set_anon(anonymous_block, iface.instance_name.empty());
        TraversingVisitor::visit(iface);
 }
 
 void DeclarationValidator::visit(FunctionDeclaration &func)
 {
+       if(Statement *previous = find_definition(func.name))
+               if(!dynamic_cast<FunctionDeclaration *>(previous))
+                       multiple_definition(format("'%s'", func.name), func, *previous);
+
        if(func.definition==&func)
                check_definition(func.name, func);
        TraversingVisitor::visit(func);