source/glsl/validate.cpp

   1 #include <msp/core/raii.h>
   2 #include <msp/strings/format.h>
   3 #include "validate.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace GL {
   9 namespace SL {
  10
  11 Validator::Validator():
  12         stage(0)
  13 { }
  14
  15 void Validator::diagnose(Statement *statement, Diagnostic::Severity severity, const string &message)
  16 {
  17         Diagnostic diag;
  18         diag.severity = severity;
  19         if(statement)
  20         {
  21                 diag.source = statement->source;
  22                 diag.line = statement->line;
  23         }
  24         diag.message = message;
  25         stage->diagnostics.push_back(diag);
  26 }
  27
  28
  29 DeclarationValidator::DeclarationValidator():
  30         anonymous_block(false)
  31 { }
  32
  33 void DeclarationValidator::multiple_definition(const string &name, Statement &statement, Statement &previous)
  34 {
  35         error(&statement, format("Multiple definition of %s", name));
  36         diagnose(&previous, Diagnostic::INFO, "Previous definition is here");
  37 }
  38
  39 Statement *DeclarationValidator::find_definition(const string &name)
  40 {
  41         BlockDeclarationMap *decls = &declarations[current_block];
  42         BlockDeclarationMap::const_iterator i = decls->find(name);
  43         if(i==decls->end() && anonymous_block)
  44         {
  45                 decls = &declarations[current_block->parent];
  46                 i = decls->find(name);
  47         }
  48         return (i!=decls->end() ? i->second : 0);
  49 }
  50
  51 void DeclarationValidator::check_definition(const string &name, Statement &statement)
  52 {
  53         if(Statement *previous = find_definition(name))
  54                 multiple_definition(format("'%s'", name), statement, *previous);
  55         else
  56                 record_definition(name, statement);
  57 }
  58
  59 void DeclarationValidator::record_definition(const string &name, Statement &statement)
  60 {
  61         declarations[current_block].insert(make_pair(name, &statement));
  62         if(anonymous_block)
  63                 declarations[current_block->parent].insert(make_pair(name, &statement));
  64 }
  65
  66 void DeclarationValidator::visit(VariableDeclaration &var)
  67 {
  68         check_definition(var.name, var);
  69         TraversingVisitor::visit(var);
  70 }
  71
  72 void DeclarationValidator::visit(InterfaceBlock &iface)
  73 {
  74         string key = iface.interface+iface.name;
  75         map<string, InterfaceBlock *>::const_iterator i = interface_blocks.find(key);
  76         if(i!=interface_blocks.end())
  77                 multiple_definition(format("interface block '%s %s'", iface.interface, iface.name), iface, *i->second);
  78         else
  79                 interface_blocks.insert(make_pair(key, &iface));
  80
  81         if(Statement *previous = find_definition(iface.name))
  82         {
  83                 if(!dynamic_cast<InterfaceBlock *>(previous))
  84                         multiple_definition(format("'%s'", iface.name), iface, *previous);
  85         }
  86         else
  87                 record_definition(iface.name, iface);
  88
  89         if(!iface.instance_name.empty())
  90                 check_definition(iface.instance_name, iface);
  91
  92         SetFlag set_anon(anonymous_block, iface.instance_name.empty());
  93         TraversingVisitor::visit(iface);
  94 }
  95
  96 void DeclarationValidator::visit(FunctionDeclaration &func)
  97 {
  98         if(Statement *previous = find_definition(func.name))
  99                 if(!dynamic_cast<FunctionDeclaration *>(previous))
 100                         multiple_definition(format("'%s'", func.name), func, *previous);
 101
 102         if(func.definition==&func)
 103                 check_definition(func.name, func);
 104         TraversingVisitor::visit(func);
 105 }
 106
 107 } // namespace SL
 108 } // namespace GL
 109 } // namespace Msp