+#include <algorithm>
+#include <cstring>
#include <msp/core/raii.h>
#include <msp/strings/format.h>
+#include <msp/strings/utils.h>
#include "validate.h"
using namespace std;
namespace SL {
Validator::Validator():
- stage(0)
+ stage(0),
+ last_provoker(0)
{ }
-void Validator::diagnose(Statement *statement, Diagnostic::Severity severity, const string &message)
+void Validator::diagnose(Node &node, Node &provoking_node, Diagnostic::Severity severity, const string &message)
{
Diagnostic diag;
diag.severity = severity;
- if(statement)
- {
- diag.source = statement->source;
- diag.line = statement->line;
- }
+ diag.source = node.source;
+ diag.line = node.line;
+ diag.provoking_source = provoking_node.source;
+ diag.provoking_line = provoking_node.line;
diag.message = message;
stage->diagnostics.push_back(diag);
+
+ last_provoker = &provoking_node;
+}
+
+void Validator::add_info(Node &node, const string &message)
+{
+ if(!last_provoker)
+ throw logic_error("Tried to add info without a previous provoker");
+ diagnose(node, *last_provoker, Diagnostic::INFO, message);
}
DeclarationValidator::DeclarationValidator():
+ scope(GLOBAL),
+ iface_layout(0),
+ iface_block(0),
+ variable(0)
+{ }
+
+const char *DeclarationValidator::describe_variable(ScopeType scope)
+{
+ switch(scope)
+ {
+ case GLOBAL: return "global variable";
+ case STRUCT: return "struct member";
+ case INTERFACE_BLOCK: return "interface block member";
+ case FUNCTION_PARAM: return "function parameter";
+ case FUNCTION: return "local variable";
+ default: return "variable";
+ }
+}
+
+void DeclarationValidator::visit(Layout &layout)
+{
+ for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
+ {
+ bool allowed = false;
+ string err_descr;
+ bool value = true;
+ if(i->name=="location")
+ allowed = (variable && scope==GLOBAL);
+ else if(i->name=="binding" || i->name=="set")
+ {
+ if(variable)
+ {
+ TypeDeclaration *type = variable->type_declaration;
+ while(BasicTypeDeclaration *basic = dynamic_cast<BasicTypeDeclaration *>(type))
+ type = basic->base_type;
+ allowed = (scope==GLOBAL && dynamic_cast<ImageTypeDeclaration *>(type));
+ err_descr = "variable of non-opaque type";
+ }
+ else if(iface_block)
+ allowed = true;
+ }
+ else if(i->name=="constant_id")
+ {
+ allowed = (variable && scope==GLOBAL);
+ if(allowed)
+ {
+ if(!variable->constant)
+ {
+ allowed = false;
+ err_descr = "non-constant variable";
+ }
+ else
+ {
+ BasicTypeDeclaration *basic = dynamic_cast<BasicTypeDeclaration *>(variable->type_declaration);
+ if(!basic || basic->kind<BasicTypeDeclaration::BOOL || basic->kind>BasicTypeDeclaration::INT)
+ {
+ allowed = false;
+ err_descr = format("variable of type '%s'",
+ (variable->type_declaration ? variable->type_declaration->name : variable->type));
+ }
+ }
+ }
+ }
+ else if(i->name=="offset")
+ allowed = (variable && scope==INTERFACE_BLOCK);
+ else if(i->name=="points")
+ {
+ allowed = (stage->type==Stage::GEOMETRY && iface_layout && (iface_layout->interface=="in" || iface_layout->interface=="out"));
+ value = false;
+ }
+ else if(i->name=="lines" || i->name=="lines_adjacency" || i->name=="triangles" || i->name=="triangles_adjacency")
+ {
+ allowed = (stage->type==Stage::GEOMETRY && iface_layout && iface_layout->interface=="in");
+ value = false;
+ }
+ else if(i->name=="line_strip" || i->name=="triangle_strip")
+ {
+ allowed = (stage->type==Stage::GEOMETRY && iface_layout && iface_layout->interface=="out");
+ value = false;
+ }
+ else if(i->name=="invocations")
+ allowed = (stage->type==Stage::GEOMETRY && iface_layout && iface_layout->interface=="in");
+ else if(i->name=="max_vertices")
+ allowed = (stage->type==Stage::GEOMETRY && iface_layout && iface_layout->interface=="out");
+ else if(i->name=="std140" || i->name=="std430")
+ {
+ allowed = (iface_block && !variable && iface_block->interface=="uniform");
+ value = false;
+ }
+
+ if(!allowed)
+ {
+ if(err_descr.empty())
+ {
+ if(variable)
+ err_descr = describe_variable(scope);
+ else if(iface_block)
+ err_descr = "interface block";
+ else if(iface_layout)
+ err_descr = format("interface '%s'", iface_layout->interface);
+ else
+ err_descr = "unknown declaration";
+ }
+ error(layout, format("Layout qualifier '%s' not allowed on %s", i->name, err_descr));
+ }
+ else if(value && !i->has_value)
+ error(layout, format("Layout qualifier '%s' requires a value", i->name));
+ else if(!value && i->has_value)
+ error(layout, format("Layout qualifier '%s' does not allow a value", i->name));
+ }
+}
+
+void DeclarationValidator::visit(InterfaceLayout &layout)
+{
+ SetForScope<InterfaceLayout *> set_layout(iface_layout, &layout);
+ TraversingVisitor::visit(layout);
+}
+
+void DeclarationValidator::visit(BasicTypeDeclaration &type)
+{
+ BasicTypeDeclaration *basic_base = dynamic_cast<BasicTypeDeclaration *>(type.base_type);
+ BasicTypeDeclaration::Kind base_kind = (basic_base ? basic_base->kind : BasicTypeDeclaration::VOID);
+
+ if(type.kind==BasicTypeDeclaration::VECTOR && (base_kind<BasicTypeDeclaration::BOOL || base_kind>BasicTypeDeclaration::FLOAT))
+ error(type, format("Invalid base type '%s' for vector type '%s'", type.base, type.name));
+ else if(type.kind==BasicTypeDeclaration::MATRIX && base_kind!=BasicTypeDeclaration::VECTOR)
+ error(type, format("Invalid base type '%s' for matrix type '%s'", type.base, type.name));
+ else if(type.kind==BasicTypeDeclaration::ARRAY && basic_base && base_kind==BasicTypeDeclaration::VOID)
+ error(type, format("Invalid base type '%s' for array type '%s'", type.base, type.name));
+}
+
+void DeclarationValidator::visit(ImageTypeDeclaration &type)
+{
+ BasicTypeDeclaration::Kind base_kind = BasicTypeDeclaration::VOID;
+ if(BasicTypeDeclaration *basic_base = dynamic_cast<BasicTypeDeclaration *>(type.base_type))
+ base_kind = basic_base->kind;
+ if(base_kind!=BasicTypeDeclaration::INT && base_kind!=BasicTypeDeclaration::FLOAT)
+ error(type, format("Invalid base type '%s' for image type '%s'", type.base, type.name));
+}
+
+void DeclarationValidator::visit(StructDeclaration &strct)
+{
+ SetForScope<ScopeType> set_scope(scope, (scope!=INTERFACE_BLOCK ? STRUCT : scope));
+ TraversingVisitor::visit(strct);
+}
+
+void DeclarationValidator::visit(VariableDeclaration &var)
+{
+ SetForScope<VariableDeclaration *> set_var(variable, &var);
+
+ const char *descr = describe_variable(scope);
+
+ if(var.layout)
+ {
+ if(scope!=GLOBAL && scope!=INTERFACE_BLOCK)
+ error(var, format("Layout qualifier not allowed on %s", descr));
+ else
+ var.layout->visit(*this);
+ }
+
+ if(var.constant)
+ {
+ if(scope==STRUCT || scope==INTERFACE_BLOCK)
+ error(var, format("Constant qualifier not allowed on %s", descr));
+ }
+
+ if(!var.interpolation.empty() || !var.sampling.empty())
+ {
+ if(var.interface!="in" && stage->type==Stage::VERTEX)
+ error(var, "Interpolation qualifier not allowed on vertex input");
+ else if(var.interface!="out" && stage->type==Stage::FRAGMENT)
+ error(var, "Interpolation qualifier not allowed on fragment output");
+ else if((var.interface!="in" && var.interface!="out") || (scope==FUNCTION_PARAM || scope==FUNCTION))
+ error(var, "Interpolation qualifier not allowed on non-interpolated variable");
+ }
+
+ if(!var.interface.empty())
+ {
+ if(iface_block && var.interface!=iface_block->interface)
+ error(var, format("Mismatched interface qualifier '%s' inside '%s' block", var.interface, iface_block->interface));
+ else if(scope==STRUCT || scope==FUNCTION)
+ error(var, format("Interface qualifier not allowed on %s", descr));
+ }
+
+ TypeDeclaration *type = var.type_declaration;
+ while(BasicTypeDeclaration *basic = dynamic_cast<BasicTypeDeclaration *>(type))
+ type = basic->base_type;
+ if(dynamic_cast<ImageTypeDeclaration *>(type))
+ {
+ if(scope!=GLOBAL && scope!=FUNCTION_PARAM)
+ error(var, format("Type '%s' not allowed on %s", type->name, descr));
+ else if(scope==GLOBAL && var.interface!="uniform")
+ error(var, format("Type '%s' only allowed with uniform interface", type->name));
+ }
+
+ if(var.init_expression)
+ {
+ if(scope==GLOBAL && !var.constant)
+ error(var, format("Initializer not allowed on non-constant %s", descr));
+ else if(scope!=GLOBAL && scope!=FUNCTION)
+ error(var, format("Initializer not allowed on %s", descr));
+ else
+ var.init_expression->visit(*this);
+ }
+}
+
+void DeclarationValidator::visit(InterfaceBlock &iface)
+{
+ SetForScope<ScopeType> set_scope(scope, INTERFACE_BLOCK);
+ SetForScope<InterfaceBlock *> set_iface(iface_block, &iface);
+
+ if(stage->type==Stage::VERTEX && iface.interface=="in")
+ error(iface, "Interface block not allowed on vertex shader input");
+ else if(stage->type==Stage::FRAGMENT && iface.interface=="out")
+ error(iface, "Interface block not allowed on fragment shader output");
+
+ TraversingVisitor::visit(iface);
+ if(iface.struct_declaration)
+ iface.struct_declaration->visit(*this);
+}
+
+void DeclarationValidator::visit(FunctionDeclaration &func)
+{
+ SetForScope<ScopeType> set_scope(scope, FUNCTION_PARAM);
+ for(NodeArray<VariableDeclaration>::const_iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
+ (*i)->visit(*this);
+ scope = FUNCTION;
+ func.body.visit(*this);
+}
+
+
+IdentifierValidator::IdentifierValidator():
anonymous_block(false)
{ }
-void DeclarationValidator::multiple_definition(const string &name, Statement &statement, Statement &previous)
+void IdentifierValidator::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");
+ error(statement, format("Multiple definition of %s", name));
+ add_info(previous, "Previous definition is here");
}
-Statement *DeclarationValidator::find_definition(const string &name)
+Statement *IdentifierValidator::find_definition(const string &name)
{
BlockDeclarationMap *decls = &declarations[current_block];
BlockDeclarationMap::const_iterator i = decls->find(name);
return (i!=decls->end() ? i->second : 0);
}
-void DeclarationValidator::check_definition(const string &name, Statement &statement)
+void IdentifierValidator::check_definition(const string &name, Statement &statement)
{
if(Statement *previous = find_definition(name))
multiple_definition(format("'%s'", name), statement, *previous);
record_definition(name, statement);
}
-void DeclarationValidator::record_definition(const string &name, Statement &statement)
+void IdentifierValidator::record_definition(const string &name, Statement &statement)
{
declarations[current_block].insert(make_pair(name, &statement));
if(anonymous_block)
declarations[current_block->parent].insert(make_pair(name, &statement));
}
-void DeclarationValidator::visit(StructDeclaration &strct)
+void IdentifierValidator::visit(TypeDeclaration &type)
+{
+ check_definition(type.name, type);
+}
+
+void IdentifierValidator::visit(StructDeclaration &strct)
{
check_definition(strct.name, strct);
TraversingVisitor::visit(strct);
}
-void DeclarationValidator::visit(VariableDeclaration &var)
+void IdentifierValidator::visit(VariableDeclaration &var)
{
check_definition(var.name, var);
TraversingVisitor::visit(var);
}
-void DeclarationValidator::visit(InterfaceBlock &iface)
+void IdentifierValidator::visit(InterfaceBlock &iface)
{
- string key = iface.interface+iface.name;
+ string key = iface.interface+iface.block_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);
+ multiple_definition(format("interface block '%s %s'", iface.interface, iface.block_name), iface, *i->second);
else
interface_blocks.insert(make_pair(key, &iface));
- if(Statement *previous = find_definition(iface.name))
+ if(Statement *previous = find_definition(iface.block_name))
{
if(!dynamic_cast<InterfaceBlock *>(previous))
- multiple_definition(format("'%s'", iface.name), iface, *previous);
+ multiple_definition(format("'%s'", iface.block_name), iface, *previous);
}
else
- record_definition(iface.name, iface);
+ record_definition(iface.block_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);
+ if(iface.instance_name.empty() && iface.struct_declaration)
+ {
+ // Inject anonymous interface block members into the global scope
+ const map<string, VariableDeclaration *> &iface_vars = iface.struct_declaration->members.variables;
+ for(map<string, VariableDeclaration *>::const_iterator j=iface_vars.begin(); j!=iface_vars.end(); ++j)
+ check_definition(j->first, *j->second);
+ }
}
-void DeclarationValidator::visit(FunctionDeclaration &func)
+void IdentifierValidator::visit(FunctionDeclaration &func)
{
+ string key = func.name+func.signature;
+ map<string, FunctionDeclaration *>::const_iterator i = overloaded_functions.find(key);
+ if(i==overloaded_functions.end())
+ overloaded_functions.insert(make_pair(key, &func));
+ else if(func.return_type_declaration && i->second->return_type_declaration!=func.return_type_declaration)
+ {
+ error(func, format("Conflicting return type '%s' for function '%s'", func.return_type_declaration->name, func.name));
+ if(i->second->return_type_declaration)
+ add_info(*i->second, format("Previously declared as returning '%s'", i->second->return_type_declaration->name));
+ }
+
if(Statement *previous = find_definition(func.name))
+ {
if(!dynamic_cast<FunctionDeclaration *>(previous))
multiple_definition(format("'%s'", func.name), func, *previous);
+ }
+ else
+ record_definition(func.name, func);
if(func.definition==&func)
- check_definition(func.name, func);
+ check_definition(func.name+func.signature, func);
+
TraversingVisitor::visit(func);
}
+
+void ReferenceValidator::visit(BasicTypeDeclaration &type)
+{
+ if(!type.base.empty() && !type.base_type)
+ error(type, format("Use of undeclared type '%s'", type.base));
+}
+
+void ReferenceValidator::visit(ImageTypeDeclaration &type)
+{
+ if(!type.base.empty() && !type.base_type)
+ error(type, format("Use of undeclared type '%s'", type.base));
+}
+
+void ReferenceValidator::visit(VariableReference &var)
+{
+ if(!var.declaration)
+ error(var, format("Use of undeclared variable '%s'", var.name));
+ else if(stage->type!=Stage::VERTEX && var.declaration->interface=="in" && var.name.compare(0, 3, "gl_") && !var.declaration->linked_declaration)
+ error(var, format("Use of unlinked input variable '%s'", var.name));
+}
+
+void ReferenceValidator::visit(MemberAccess &memacc)
+{
+ if(memacc.left->type && !memacc.declaration)
+ error(memacc, format("Use of undeclared member '%s'", memacc.member));
+ TraversingVisitor::visit(memacc);
+}
+
+void ReferenceValidator::visit(InterfaceBlockReference &iface)
+{
+ /* An interface block reference without a declaration should be impossible
+ since references are generated based on existing declarations. */
+ if(!iface.declaration)
+ error(iface, format("Use of undeclared interface block '%s'", iface.name));
+ else if(stage->type!=Stage::VERTEX && iface.declaration->interface=="in" && !iface.declaration->linked_block)
+ error(iface, format("Use of unlinked input block '%s'", iface.name));
+}
+
+void ReferenceValidator::visit(FunctionCall &call)
+{
+ if((!call.constructor && !call.declaration) || (call.constructor && !call.type))
+ {
+ bool have_declaration = call.constructor;
+ if(!call.constructor)
+ {
+ map<string, FunctionDeclaration *>::iterator i = stage->functions.lower_bound(call.name);
+ have_declaration = (i!=stage->functions.end() && i->second->name==call.name);
+ }
+
+ if(have_declaration)
+ {
+ bool valid_types = true;
+ string signature;
+ for(NodeArray<Expression>::const_iterator j=call.arguments.begin(); (valid_types && j!=call.arguments.end()); ++j)
+ {
+ if((*j)->type)
+ append(signature, ", ", (*j)->type->name);
+ else
+ valid_types = false;
+ }
+
+ if(valid_types)
+ error(call, format("No matching %s found for '%s(%s)'", (call.constructor ? "constructor" : "overload"), call.name, signature));
+ }
+ else
+ error(call, format("Call to undeclared function '%s'", call.name));
+ }
+ TraversingVisitor::visit(call);
+}
+
+void ReferenceValidator::visit(VariableDeclaration &var)
+{
+ if(!var.type_declaration)
+ error(var, format("Use of undeclared type '%s'", var.type));
+ TraversingVisitor::visit(var);
+}
+
+void ReferenceValidator::visit(InterfaceBlock &iface)
+{
+ if(!iface.struct_declaration)
+ error(iface, format("Interface block '%s %s' lacks a struct declaration", iface.interface, iface.block_name));
+ TraversingVisitor::visit(iface);
+}
+
+void ReferenceValidator::visit(FunctionDeclaration &func)
+{
+ if(!func.return_type_declaration)
+ error(func, format("Use of undeclared type '%s'", func.return_type));
+ TraversingVisitor::visit(func);
+}
+
+
+ExpressionValidator::ExpressionValidator():
+ current_function(0)
+{ }
+
+void ExpressionValidator::visit(Swizzle &swizzle)
+{
+ unsigned size = 0;
+ if(BasicTypeDeclaration *basic = dynamic_cast<BasicTypeDeclaration *>(swizzle.left->type))
+ {
+ if(basic->kind==BasicTypeDeclaration::INT || basic->kind==BasicTypeDeclaration::FLOAT)
+ size = 1;
+ else if(basic->kind==BasicTypeDeclaration::VECTOR)
+ size = basic->size;
+ }
+
+ if(size)
+ {
+ static const char component_names[] = { 'x', 'y', 'z', 'w', 'r', 'g', 'b', 'a', 's', 't', 'p', 'q' };
+ int flavour = -1;
+ for(unsigned i=0; i<swizzle.count; ++i)
+ {
+ unsigned component_flavour = (find(component_names, component_names+12, swizzle.component_group[i])-component_names)/4;
+ if(flavour==-1)
+ flavour = component_flavour;
+ else if(flavour>=0 && component_flavour!=static_cast<unsigned>(flavour))
+ {
+ error(swizzle, format("Flavour of swizzle component '%c' is inconsistent with '%c'",
+ swizzle.component_group[i], swizzle.component_group[0]));
+ flavour = -2;
+ }
+
+ if(swizzle.components[i]>=size)
+ error(swizzle, format("Access to component '%c' which is not present in '%s'",
+ swizzle.component_group[i], swizzle.left->type->name));
+ }
+ }
+ else if(swizzle.left->type)
+ error(swizzle, format("Swizzle applied to '%s' which is neither a scalar nor a vector", swizzle.left->type->name));
+
+ TraversingVisitor::visit(swizzle);
+}
+
+void ExpressionValidator::visit(UnaryExpression &unary)
+{
+ if(unary.expression->type)
+ {
+ if(!unary.type)
+ error(unary, format("No matching operator '%s' found for '%s'", unary.oper->token, unary.expression->type->name));
+ else if((unary.oper->token[1]=='+' || unary.oper->token[1]=='-') && !unary.expression->lvalue)
+ error(unary, format("Operand of '%s' is not an lvalue", unary.oper->token));
+ }
+ TraversingVisitor::visit(unary);
+}
+
+void ExpressionValidator::visit(BinaryExpression &binary)
+{
+ if(!binary.type && binary.left->type && binary.right->type)
+ {
+ if(binary.oper->token[0]=='[')
+ error(binary, format("Can't index element of '%s' with '%s'",
+ binary.left->type->name, binary.right->type->name));
+ else
+ error(binary, format("No matching operator '%s' found for '%s' and '%s'",
+ binary.oper->token, binary.left->type->name, binary.right->type->name));
+ }
+ TraversingVisitor::visit(binary);
+}
+
+void ExpressionValidator::visit(Assignment &assign)
+{
+ if(assign.left->type)
+ {
+ if(!assign.left->lvalue)
+ error(assign, "Target of assignment is not an lvalue");
+ if(assign.right->type)
+ {
+ if(assign.oper->token[0]!='=')
+ {
+ if(!assign.type)
+ error(assign, format("No matching operator '%s' found for '%s' and '%s'",
+ string(assign.oper->token, strlen(assign.oper->token)-1), assign.left->type->name, assign.right->type->name));
+ }
+ else if(assign.left->type!=assign.right->type)
+ error(assign, format("Assignment to variable of type '%s' from expression of incompatible type '%s'",
+ assign.left->type->name, assign.right->type->name));
+ }
+ }
+ TraversingVisitor::visit(assign);
+}
+
+void ExpressionValidator::visit(TernaryExpression &ternary)
+{
+ if(ternary.condition->type)
+ {
+ BasicTypeDeclaration *basic_cond = dynamic_cast<BasicTypeDeclaration *>(ternary.condition->type);
+ if(!basic_cond || basic_cond->kind!=BasicTypeDeclaration::BOOL)
+ error(ternary, "Ternary operator condition is not a boolean");
+ else if(!ternary.type && ternary.true_expr->type && ternary.false_expr->type)
+ error(ternary, format("Ternary operator has incompatible types '%s' and '%s'",
+ ternary.true_expr->type->name, ternary.false_expr->type->name));
+ }
+ TraversingVisitor::visit(ternary);
+}
+
+void ExpressionValidator::visit(VariableDeclaration &var)
+{
+ if(var.init_expression && var.init_expression->type && var.type_declaration && var.init_expression->type!=var.type_declaration)
+ error(var, format("Initializing a variable of type '%s' with an expression of incompatible type '%s'",
+ var.type_declaration->name, var.init_expression->type->name));
+ TraversingVisitor::visit(var);
+}
+
+void ExpressionValidator::visit(FunctionDeclaration &func)
+{
+ SetForScope<FunctionDeclaration *> set_func(current_function, &func);
+ TraversingVisitor::visit(func);
+}
+
+void ExpressionValidator::visit(Return &ret)
+{
+ if(current_function && current_function->return_type_declaration)
+ {
+ TypeDeclaration *return_type = current_function->return_type_declaration;
+ BasicTypeDeclaration *basic_return = dynamic_cast<BasicTypeDeclaration *>(return_type);
+ if(ret.expression)
+ {
+ if(ret.expression->type && ret.expression->type!=return_type)
+ error(ret, format("Return expression type '%s' is incompatible with declared return type '%s'",
+ ret.expression->type->name, return_type->name));
+ }
+ else if(!basic_return || basic_return->kind!=BasicTypeDeclaration::VOID)
+ error(ret, "Return statement without an expression in a function not returning 'void'");
+ }
+
+ TraversingVisitor::visit(ret);
+}
+
+
+int StageInterfaceValidator::get_location(const Layout &layout)
+{
+ for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
+ if(i->name=="location")
+ return i->value;
+ return -1;
+}
+
+void StageInterfaceValidator::visit(VariableDeclaration &var)
+{
+ int location = (var.layout ? get_location(*var.layout) : -1);
+ if(var.interface=="in" && var.linked_declaration)
+ {
+ const Layout *linked_layout = var.linked_declaration->layout.get();
+ int linked_location = (linked_layout ? get_location(*linked_layout) : -1);
+ if(linked_location!=location)
+ {
+ error(var, format("Mismatched location %d for 'in %s'", location, var.name));
+ add_info(*var.linked_declaration, format("Linked to 'out %s' with location %d",
+ var.linked_declaration->name, linked_location));
+ }
+ if(var.type_declaration && var.linked_declaration->type_declaration)
+ {
+ const TypeDeclaration *type = var.type_declaration;
+ if(stage->type==Stage::GEOMETRY)
+ {
+ if(const BasicTypeDeclaration *basic = dynamic_cast<const BasicTypeDeclaration *>(type))
+ if(basic->kind==BasicTypeDeclaration::ARRAY && basic->base_type)
+ type = basic->base_type;
+ }
+ if(!is_same_type(*type, *var.linked_declaration->type_declaration))
+ {
+ error(var, format("Mismatched type '%s' for 'in %s'", type->name, var.name));
+ add_info(*var.linked_declaration, format("Linked to 'out %s' with type '%s'",
+ var.linked_declaration->name, var.linked_declaration->type_declaration->name));
+ }
+ }
+ }
+
+ if(location>=0 && !var.interface.empty())
+ {
+ map<unsigned, VariableDeclaration *> &used = used_locations[var.interface];
+
+ unsigned loc_count = 1;
+ if(var.array)
+ if(const Literal *literal = dynamic_cast<const Literal *>(var.array_size.get()))
+ if(literal->value.check_type<int>())
+ loc_count = literal->value.value<int>();
+
+ for(unsigned i=0; i<loc_count; ++i)
+ {
+ map<unsigned, VariableDeclaration *>::const_iterator j = used.find(location+i);
+ if(j!=used.end())
+ {
+ error(var, format("Overlapping location %d for '%s %s'", location+i, var.interface, var.name));
+ add_info(*j->second, format("Previously used here for '%s %s'", j->second->interface, j->second->name));
+ }
+ else
+ used[location+i] = &var;
+ }
+ }
+}
+
+
+void GlobalInterfaceValidator::apply(Module &module)
+{
+ for(list<Stage>::iterator i=module.stages.begin(); i!=module.stages.end(); ++i)
+ {
+ stage = &*i;
+ i->content.visit(*this);
+ }
+}
+
+void GlobalInterfaceValidator::get_binding(const Layout &layout, unsigned &desc_set, int &binding)
+{
+ for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
+ {
+ if(i->name=="set")
+ desc_set = i->value;
+ else if(i->name=="binding")
+ binding = i->value;
+ }
+}
+
+void GlobalInterfaceValidator::check_binding(const Layout &layout, const Binding &binding)
+{
+ unsigned desc_set = 0;
+ int bind_point = -1;
+ get_binding(layout, desc_set, bind_point);
+ if(bind_point<0)
+ return;
+
+ map<unsigned, Binding> &used = used_bindings[desc_set];
+ map<unsigned, Binding>::const_iterator i = used.find(bind_point);
+ if(i!=used.end())
+ {
+ if(i->second.name!=binding.name)
+ {
+ error(*binding.node, format("Overlapping binding %d for '%s'", bind_point, binding.name));
+ add_info(*i->second.node, format("Previously used here for '%s'", i->second.name));
+ }
+ if(i->second.type && binding.type)
+ {
+ if(!is_same_type(*i->second.type, *binding.type))
+ {
+ string type_name = (dynamic_cast<const StructDeclaration *>(binding.type) ? "struct type" :
+ format("type '%s'", binding.type->name));
+ error(*binding.node, format("Mismatched %s for binding %d '%s'", type_name, bind_point, binding.name));
+
+ string message = "Previously used here";
+ if(!dynamic_cast<const StructDeclaration *>(i->second.type))
+ message += format(" with type '%s'", i->second.type->name);
+ add_info(*i->second.node, message);
+ }
+ }
+ }
+ else
+ used.insert(make_pair(bind_point, binding));
+}
+
+void GlobalInterfaceValidator::visit(VariableDeclaration &var)
+{
+ if(var.interface=="uniform" && var.layout)
+ check_binding(*var.layout, var);
+}
+
+void GlobalInterfaceValidator::visit(InterfaceBlock &iface)
+{
+ if(iface.interface=="uniform" && iface.layout)
+ check_binding(*iface.layout, iface);
+}
+
} // namespace SL
} // namespace GL
} // namespace Msp