source: src/Parser/TypedefTable.cc@ 2bae7307

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// TypedefTable.cc -- 
//
// Author           : Rodolfo G. Esteves
// Created On       : Sat May 16 15:20:13 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Sat May 16 15:24:03 2015
// Update Count     : 2
//

#include <map>
#include <list>
#include "TypedefTable.h"
#include <cassert>
using namespace std;

#if 0
#include <iostream>
#define debugPrint(x ) cerr << x
#else
#define debugPrint( x )
#endif

TypedefTable::TypedefTable() : currentScope( 0 ) {}

bool TypedefTable::isKind( string identifier, kind_t kind ) const {
        tableType::const_iterator id_pos = table.find( identifier );
        if ( id_pos == table.end()) {
                return true;
        } else {
                return (*((*id_pos ).second.begin())).kind == kind;
        }
}

bool TypedefTable::isIdentifier( string identifier ) const {
        return isKind( identifier, ID );
}

bool TypedefTable::isTypedef( string identifier ) const {
        return isKind( identifier, TD );
}

bool TypedefTable::isTypegen( string identifier ) const {
        return isKind( identifier, TG );
}

void TypedefTable::addToScope( const std::string &identifier, kind_t kind, int scope ) {
        if ( currentContext != "" && scope == contextScope ) {
                DeferredEntry entry = { identifier, kind };
                contexts[currentContext].push_back( entry );
        } else {
                debugPrint( "Adding " << identifier << " as type " << kind << " scope " << scope << " from scope " << currentScope << endl );
                Entry newEntry = { scope, kind };
                tableType::iterator curPos = table.find( identifier );
                if ( curPos == table.end()) {
                        list<Entry> newList;
                        newList.push_front( newEntry );
                        table[identifier] = newList;
                } else {
                        list<Entry>::iterator listPos = (*curPos ).second.begin();
                        while ( listPos != (*curPos ).second.end() && listPos->scope > scope ) {
                                listPos++;
                        }
                        (*curPos ).second.insert( listPos, newEntry );
                }
        }
}

void TypedefTable::addToCurrentScope( const std::string &identifier, kind_t kind ) {
        addToScope( identifier, kind, currentScope );
}

void TypedefTable::addToCurrentScope( kind_t kind ) {
        addToCurrentScope( nextIdentifiers.top(), kind );
}

void TypedefTable::addToEnclosingScope( const std::string &identifier, kind_t kind ) {
        assert( currentScope >= 1 );
        addToScope( identifier, kind, currentScope - 1 );
}

void TypedefTable::addToEnclosingScope( kind_t kind ) {
        addToEnclosingScope( nextIdentifiers.top(), kind );
}

void TypedefTable::addToEnclosingScope2( const std::string &identifier, kind_t kind ) {
        assert( currentScope >= 2 );
        addToScope( identifier, kind, currentScope - 2 );
}

void TypedefTable::addToEnclosingScope2( kind_t kind ) {
        addToEnclosingScope2( nextIdentifiers.top(), kind );
}

void TypedefTable::setNextIdentifier( const std::string &identifier ) {
        nextIdentifiers.top() = identifier;
}

void TypedefTable::openContext( std::string contextName ) {
        map< string, deferListType >::iterator i = contexts.find( contextName );
        if ( i != contexts.end() ) {
                deferListType &entries = i->second;
                for ( deferListType::iterator i = entries.begin(); i != entries.end(); i++) {
                        addToEnclosingScope( i->identifier, i->kind );
                }
        }
}

void TypedefTable::enterScope( void ) {
        currentScope += 1;
        deferListStack.push( deferListType() );
        nextIdentifiers.push( "" );
        debugPrint( "Entering scope " << currentScope << ", nextIdentifiers size is " << nextIdentifiers.size() << endl );
}

void TypedefTable::leaveScope( void ) {
        debugPrint( "Leaving scope " << currentScope << endl );
        for ( tableType::iterator i = table.begin(); i != table.end(); ) {
                list<Entry> &declList = (*i ).second;
                while ( ! declList.empty() && declList.front().scope == currentScope ) {
                        declList.pop_front();
                }
                if ( declList.empty() ) {                       // standard idom for erasing during traversal
                        table.erase( i++ );
                } else ++i;
        }
        currentScope -= 1;
        for ( deferListType::iterator i = deferListStack.top().begin(); i != deferListStack.top().end(); i++) {
                addToCurrentScope( i->identifier, i->kind );
        }
        deferListStack.pop();
        debugPrint( "nextIdentifiers size is " << nextIdentifiers.size() << " top is " << nextIdentifiers.top() << endl );
        nextIdentifiers.pop();
}

void TypedefTable::enterContext( std::string contextName ) {
        currentContext = contextName;
        contextScope = currentScope;
}

void TypedefTable::leaveContext( void ) {
        currentContext = "";
}

void TypedefTable::print( void ) const {
        for ( tableType::const_iterator i = table.begin(); i != table.end(); i++) {
                debugPrint( (*i ).first << ": " );
                list<Entry> declList = (*i ).second;
                for ( list<Entry>::const_iterator j = declList.begin(); j != declList.end(); j++ ) {
                        debugPrint( "(" << (*j ).scope << " " << (*j).kind << ") " );
                }
                debugPrint( endl );
        }
}

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //