source: src/Parser/DeclarationNode.cc @ d63eeb0

//
// 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.
//
// DeclarationNode.cc --
//
// Author           : Rodolfo G. Esteves
// Created On       : Sat May 16 12:34:05 2015
// Last Modified By : Rob Schluntz
// Last Modified On : Thu Jan 07 13:18:02 2016
// Update Count     : 130
//

#include <string>
#include <list>
#include <iterator>
#include <algorithm>
#include <cassert>

#include "TypeData.h"

#include "SynTree/Declaration.h"
#include "SynTree/Expression.h"

#include "Parser.h"
#include "TypedefTable.h"
extern TypedefTable typedefTable;

using namespace std;

// These must remain in the same order as the corresponding DeclarationNode enumerations.
const char *DeclarationNode::storageName[] = { "extern", "static", "auto", "register", "inline", "fortran", "_Noreturn", "_Thread_local", "" };
const char *DeclarationNode::qualifierName[] = { "const", "restrict", "volatile", "lvalue", "_Atomic" };
const char *DeclarationNode::basicTypeName[] = { "char", "int", "float", "double", "void", "_Bool", "_Complex", "_Imaginary" };
const char *DeclarationNode::modifierName[]  = { "signed", "unsigned", "short", "long" };
const char *DeclarationNode::aggregateName[] = { "struct", "union", "context" };
const char *DeclarationNode::typeClassName[] = { "type", "dtype", "ftype" };

UniqueName DeclarationNode::anonymous( "__anonymous" );

extern LinkageSpec::Type linkage;               /* defined in cfa.y */

DeclarationNode *DeclarationNode::clone() const {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = maybeClone( type );
        newnode->name = name;
        newnode->storageClasses = storageClasses;
        newnode->bitfieldWidth = maybeClone( bitfieldWidth );
        newnode->hasEllipsis = hasEllipsis;
        newnode->initializer = initializer;
        newnode->next = maybeClone( next );
        newnode->linkage = linkage;
        return newnode;
}

DeclarationNode::DeclarationNode() : type( 0 ), bitfieldWidth( 0 ), initializer( 0 ), hasEllipsis( false ), linkage( ::linkage ) {
}

DeclarationNode::~DeclarationNode() {
        delete type;
        delete bitfieldWidth;
        delete initializer;
}

bool DeclarationNode::get_hasEllipsis() const {
        return hasEllipsis;
}

void DeclarationNode::print( std::ostream &os, int indent ) const {
        os << string( indent, ' ' );
        if ( name == "" ) {
                os << "unnamed: ";
        } else {
                os << name << ": ";
        } // if

        if ( linkage != LinkageSpec::Cforall ) {
                os << LinkageSpec::toString( linkage ) << " ";
        } // if

        printEnums( storageClasses.begin(), storageClasses.end(), DeclarationNode::storageName, os );
        if ( type ) {
                type->print( os, indent );
        } else {
                os << "untyped entity ";
        } // if

        if ( bitfieldWidth ) {
                os << endl << string( indent + 2, ' ' ) << "with bitfield width ";
                bitfieldWidth->printOneLine( os );
        } // if

        if ( initializer != 0 ) {
                os << endl << string( indent + 2, ' ' ) << "with initializer ";
                initializer->printOneLine( os );
                os << " maybe constructed? " << initializer->get_maybeConstructed();

        } // if

        os << endl;
}

void DeclarationNode::printList( std::ostream &os, int indent ) const {
        ParseNode::printList( os, indent );
        if ( hasEllipsis ) {
                os << string( indent, ' ' )  << "and a variable number of other arguments" << endl;
        } // if
}

DeclarationNode *DeclarationNode::newFunction( std::string *name, DeclarationNode *ret, DeclarationNode *param, StatementNode *body, bool newStyle ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->name = assign_strptr( name );

        newnode->type = new TypeData( TypeData::Function );
        newnode->type->function->params = param;
        newnode->type->function->newStyle = newStyle;
        newnode->type->function->body = body;

        if ( body ) {
                newnode->type->function->hasBody = true;
        } // if

        if ( ret ) {
                newnode->type->base = ret->type;
                ret->type = 0;
                delete ret;
        } // if

        return newnode;
}

DeclarationNode *DeclarationNode::newQualifier( Qualifier q ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData();
        newnode->type->qualifiers.push_back( q );
        return newnode;
}

DeclarationNode *DeclarationNode::newStorageClass( DeclarationNode::StorageClass sc ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->storageClasses.push_back( sc );
        return newnode;
}

DeclarationNode *DeclarationNode::newBasicType( BasicType bt ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Basic );
        newnode->type->basic->typeSpec.push_back( bt );
        return newnode;
}

DeclarationNode *DeclarationNode::newModifier( Modifier mod ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Basic );
        newnode->type->basic->modifiers.push_back( mod );
        return newnode;
}

DeclarationNode *DeclarationNode::newForall( DeclarationNode *forall ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Unknown );
        newnode->type->forall = forall;
        return newnode;
}

DeclarationNode *DeclarationNode::newFromTypedef( std::string *name ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::SymbolicInst );
        newnode->type->symbolic->name = assign_strptr( name );
        newnode->type->symbolic->isTypedef = true;
        newnode->type->symbolic->params = 0;
        return newnode;
}

DeclarationNode *DeclarationNode::newAggregate( Aggregate kind, const std::string *name, ExpressionNode *actuals, DeclarationNode *fields ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Aggregate );
        newnode->type->aggregate->kind = kind;
        newnode->type->aggregate->name = assign_strptr( name );
        if ( newnode->type->aggregate->name == "" ) {           // anonymous aggregate ?
                newnode->type->aggregate->name = DeclarationNode::anonymous.newName();
        } else {
                // SKULLDUGGERY: generate a typedef for the aggregate name so that the aggregate does not have to be qualified
                // by "struct"
                typedefTable.addToEnclosingScope( newnode->type->aggregate->name, TypedefTable::TD );
                DeclarationNode *typedf = new DeclarationNode;
                typedf->name = newnode->type->aggregate->name;
                newnode->appendList( typedf->addType( newnode->clone() )->addTypedef() );
        } // if
        newnode->type->aggregate->actuals = actuals;
        newnode->type->aggregate->fields = fields;
        return newnode;
}

DeclarationNode *DeclarationNode::newEnum( std::string *name, DeclarationNode *constants ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->name = assign_strptr( name );
        newnode->type = new TypeData( TypeData::Enum );
        newnode->type->enumeration->name = newnode->name;
        if ( newnode->type->enumeration->name == "" ) {         // anonymous enumeration ?
                newnode->type->enumeration->name = DeclarationNode::anonymous.newName();
        } else {
                // SKULLDUGGERY: generate a typedef for the enumeration name so that the enumeration does not have to be
                // qualified by "enum"
                typedefTable.addToEnclosingScope( newnode->type->enumeration->name, TypedefTable::TD );
                DeclarationNode *typedf = new DeclarationNode;
                typedf->name = newnode->type->enumeration->name;
                newnode->appendList( typedf->addType( newnode->clone() )->addTypedef() );
        } // if
        newnode->type->enumeration->constants = constants;
        return newnode;
}

DeclarationNode *DeclarationNode::newEnumConstant( std::string *name, ExpressionNode *constant ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->name = assign_strptr( name );
        // do something with the constant
        return newnode;
}

DeclarationNode *DeclarationNode::newName( std::string *name ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->name = assign_strptr( name );
        return newnode;
}

DeclarationNode *DeclarationNode::newFromTypeGen( std::string *name, ExpressionNode *params ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::SymbolicInst );
        newnode->type->symbolic->name = assign_strptr( name );
        newnode->type->symbolic->isTypedef = false;
        newnode->type->symbolic->actuals = params;
        return newnode;
}

DeclarationNode *DeclarationNode::newTypeParam( TypeClass tc, std::string *name ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->name = assign_strptr( name );
        newnode->type = new TypeData( TypeData::Variable );
        newnode->type->variable->tyClass = tc;
        newnode->type->variable->name = newnode->name;
        return newnode;
}

DeclarationNode *DeclarationNode::newContext( std::string *name, DeclarationNode *params, DeclarationNode *asserts ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Aggregate );
        newnode->type->aggregate->kind = Context;
        newnode->type->aggregate->params = params;
        newnode->type->aggregate->fields = asserts;
        newnode->type->aggregate->name = assign_strptr( name );
        return newnode;
}

DeclarationNode *DeclarationNode::newContextUse( std::string *name, ExpressionNode *params ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::AggregateInst );
        newnode->type->aggInst->aggregate = new TypeData( TypeData::Aggregate );
        newnode->type->aggInst->aggregate->aggregate->kind = Context;
        newnode->type->aggInst->aggregate->aggregate->name = assign_strptr( name );
        newnode->type->aggInst->params = params;
        return newnode;
}

DeclarationNode *DeclarationNode::newTypeDecl( std::string *name, DeclarationNode *typeParams ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->name = assign_strptr( name );
        newnode->type = new TypeData( TypeData::Symbolic );
        newnode->type->symbolic->isTypedef = false;
        newnode->type->symbolic->params = typeParams;
        newnode->type->symbolic->name = newnode->name;
        return newnode;
}

DeclarationNode *DeclarationNode::newPointer( DeclarationNode *qualifiers ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Pointer );
        return newnode->addQualifiers( qualifiers );
}

DeclarationNode *DeclarationNode::newArray( ExpressionNode *size, DeclarationNode *qualifiers, bool isStatic ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Array );
        newnode->type->array->dimension = size;
        newnode->type->array->isStatic = isStatic;
        if ( newnode->type->array->dimension == 0 || dynamic_cast<ConstantNode *>( newnode->type->array->dimension ) ) {
                newnode->type->array->isVarLen = false;
        } else {
                newnode->type->array->isVarLen = true;
        } // if
        return newnode->addQualifiers( qualifiers );
}

DeclarationNode *DeclarationNode::newVarArray( DeclarationNode *qualifiers ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Array );
        newnode->type->array->dimension = 0;
        newnode->type->array->isStatic = false;
        newnode->type->array->isVarLen = true;
        return newnode->addQualifiers( qualifiers );
}

DeclarationNode *DeclarationNode::newBitfield( ExpressionNode *size ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->bitfieldWidth = size;
        return newnode;
}

DeclarationNode *DeclarationNode::newTuple( DeclarationNode *members ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Tuple );
        newnode->type->tuple->members = members;
        return newnode;
}

DeclarationNode *DeclarationNode::newTypeof( ExpressionNode *expr ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Typeof );
        newnode->type->typeexpr->expr = expr;
        return newnode;
}

DeclarationNode *DeclarationNode::newAttr( std::string *name, ExpressionNode *expr ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Attr );
        newnode->type->attr->name = assign_strptr( name );
        newnode->type->attr->expr = expr;
        return newnode;
}

DeclarationNode *DeclarationNode::newAttr( std::string *name, DeclarationNode *type ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = new TypeData( TypeData::Attr );
        newnode->type->attr->name = assign_strptr( name );
        newnode->type->attr->type = type;
        return newnode;
}

static void addQualifiersToType( TypeData *&src, TypeData *dst ) {
        if ( src && dst ) {
                if ( src->forall && dst->kind == TypeData::Function ) {
                        if ( dst->forall ) {
                                dst->forall->appendList( src->forall );
                        } else {
                                dst->forall = src->forall;
                        } // if
                        src->forall = 0;
                } // if
                if ( dst->base ) {
                        addQualifiersToType( src, dst->base );
                } else if ( dst->kind == TypeData::Function ) {
                        dst->base = src;
                        src = 0;
                } else {
                        dst->qualifiers.splice( dst->qualifiers.end(), src->qualifiers );
                } // if
        } // if
}

DeclarationNode *DeclarationNode::addQualifiers( DeclarationNode *q ) {
        if ( q ) {
                storageClasses.splice( storageClasses.end(), q->storageClasses );
                if ( q->type ) {
                        if ( ! type ) {
                                type = new TypeData;
                        } // if
                        addQualifiersToType( q->type, type );
                        if ( q->type && q->type->forall ) {
                                if ( type->forall ) {
                                        type->forall->appendList( q->type->forall );
                                } else {
                                        if ( type->kind == TypeData::Aggregate ) {
                                                type->aggregate->params = q->type->forall;
                                                // change implicit typedef from TYPEDEFname to TYPEGENname
                                                typedefTable.changeKind( type->aggregate->name, TypedefTable::TG );
                                        } else {
                                                type->forall = q->type->forall;
                                        } // if
                                } // if
                                q->type->forall = 0;
                        } // if
                } // if
        } // if
        delete q;
        return this;
}

DeclarationNode *DeclarationNode::copyStorageClasses( DeclarationNode *q ) {
        storageClasses = q->storageClasses;
        return this;
}

static void addTypeToType( TypeData *&src, TypeData *&dst ) {
        if ( src && dst ) {
                if ( src->forall && dst->kind == TypeData::Function ) {
                        if ( dst->forall ) {
                                dst->forall->appendList( src->forall );
                        } else {
                                dst->forall = src->forall;
                        } // if
                        src->forall = 0;
                } // if
                if ( dst->base ) {
                        addTypeToType( src, dst->base );
                } else {
                        switch ( dst->kind ) {
                          case TypeData::Unknown:
                                src->qualifiers.splice( src->qualifiers.end(), dst->qualifiers );
                                dst = src;
                                src = 0;
                                break;
                          case TypeData::Basic:
                                dst->qualifiers.splice( dst->qualifiers.end(), src->qualifiers );
                                if ( src->kind != TypeData::Unknown ) {
                                        assert( src->kind == TypeData::Basic );
                                        dst->basic->modifiers.splice( dst->basic->modifiers.end(), src->basic->modifiers );
                                        dst->basic->typeSpec.splice( dst->basic->typeSpec.end(), src->basic->typeSpec );
                                } // if
                                break;
                          default:
                                switch ( src->kind ) {
                                  case TypeData::Aggregate:
                                  case TypeData::Enum:
                                        dst->base = new TypeData( TypeData::AggregateInst );
                                        dst->base->aggInst->aggregate = src;
                                        if ( src->kind == TypeData::Aggregate ) {
                                                dst->base->aggInst->params = maybeClone( src->aggregate->actuals );
                                        } // if
                                        dst->base->qualifiers.splice( dst->base->qualifiers.end(), src->qualifiers );
                                        src = 0;
                                        break;
                                  default:
                                        if ( dst->forall ) {
                                                dst->forall->appendList( src->forall );
                                        } else {
                                                dst->forall = src->forall;
                                        } // if
                                        src->forall = 0;
                                        dst->base = src;
                                        src = 0;
                                } // switch
                        } // switch
                } // if
        } // if
}

DeclarationNode *DeclarationNode::addType( DeclarationNode *o ) {
        if ( o ) {
                storageClasses.splice( storageClasses.end(), o->storageClasses );
                if ( o->type ) {
                        if ( ! type ) {
                                if ( o->type->kind == TypeData::Aggregate || o->type->kind == TypeData::Enum ) {
                                        type = new TypeData( TypeData::AggregateInst );
                                        type->aggInst->aggregate = o->type;
                                        if ( o->type->kind == TypeData::Aggregate ) {
                                                type->aggInst->params = maybeClone( o->type->aggregate->actuals );
                                        } // if
                                        type->qualifiers.splice( type->qualifiers.end(), o->type->qualifiers );
                                } else {
                                        type = o->type;
                                } // if
                                o->type = 0;
                        } else {
                                addTypeToType( o->type, type );
                        } // if
                } // if
                if ( o->bitfieldWidth ) {
                        bitfieldWidth = o->bitfieldWidth;
                } // if

                // there may be typedefs chained onto the type
                if ( o->get_link() ) {
                        set_link( o->get_link()->clone() );
                } // if
        } // if
        delete o;
        return this;
}

DeclarationNode *DeclarationNode::addTypedef() {
        TypeData *newtype = new TypeData( TypeData::Symbolic );
        newtype->symbolic->params = 0;
        newtype->symbolic->isTypedef = true;
        newtype->symbolic->name = name;
        newtype->base = type;
        type = newtype;
        return this;
}

DeclarationNode *DeclarationNode::addAssertions( DeclarationNode *assertions ) {
        assert( type );
        switch ( type->kind ) {
          case TypeData::Symbolic:
                if ( type->symbolic->assertions ) {
                        type->symbolic->assertions->appendList( assertions );
                } else {
                        type->symbolic->assertions = assertions;
                } // if
                break;
          case TypeData::Variable:
                if ( type->variable->assertions ) {
                        type->variable->assertions->appendList( assertions );
                } else {
                        type->variable->assertions = assertions;
                } // if
                break;
          default:
                assert( false );
        } // switch

        return this;
}

DeclarationNode *DeclarationNode::addName( std::string *newname ) {
        name = assign_strptr( newname );
        return this;
}

DeclarationNode *DeclarationNode::addBitfield( ExpressionNode *size ) {
        bitfieldWidth = size;
        return this;
}

DeclarationNode *DeclarationNode::addVarArgs() {
        assert( type );
        hasEllipsis = true;
        return this;
}

DeclarationNode *DeclarationNode::addFunctionBody( StatementNode *body ) {
        assert( type );
        assert( type->kind == TypeData::Function );
        assert( type->function->body == 0 );
        type->function->body = body;
        type->function->hasBody = true;
        return this;
}

DeclarationNode *DeclarationNode::addOldDeclList( DeclarationNode *list ) {
        assert( type );
        assert( type->kind == TypeData::Function );
        assert( type->function->oldDeclList == 0 );
        type->function->oldDeclList = list;
        return this;
}

static void setBase( TypeData *&type, TypeData *newType ) {
        if ( type ) {
                TypeData *prevBase = type;
                TypeData *curBase = type->base;
                while ( curBase != 0 ) {
                        prevBase = curBase;
                        curBase = curBase->base;
                } // while
                prevBase->base = newType;
        } else {
                type = newType;
        } // if
}

DeclarationNode *DeclarationNode::addPointer( DeclarationNode *p ) {
        if ( p ) {
                assert( p->type->kind == TypeData::Pointer );
                setBase( type, p->type );
                p->type = 0;
                delete p;
        } // if
        return this;
}

DeclarationNode *DeclarationNode::addArray( DeclarationNode *a ) {
        if ( a ) {
                assert( a->type->kind == TypeData::Array );
                setBase( type, a->type );
                a->type = 0;
                delete a;
        } // if
        return this;
}

DeclarationNode *DeclarationNode::addNewPointer( DeclarationNode *p ) {
        if ( p ) {
                assert( p->type->kind == TypeData::Pointer );
                if ( type ) {
                        switch ( type->kind ) {
                          case TypeData::Aggregate:
                          case TypeData::Enum:
                                p->type->base = new TypeData( TypeData::AggregateInst );
                                p->type->base->aggInst->aggregate = type;
                                if ( type->kind == TypeData::Aggregate ) {
                                        p->type->base->aggInst->params = maybeClone( type->aggregate->actuals );
                                } // if
                                p->type->base->qualifiers.splice( p->type->base->qualifiers.end(), type->qualifiers );
                                break;

                          default:
                                p->type->base = type;
                        } // switch
                        type = 0;
                } // if
                delete this;
                return p;
        } else {
                return this;
        } // if
}

static TypeData *findLast( TypeData *a ) {
        assert( a );
        TypeData *cur = a;
        while ( cur->base ) {
                cur = cur->base;
        } // while
        return cur;
}

DeclarationNode *DeclarationNode::addNewArray( DeclarationNode *a ) {
        if ( a ) {
                assert( a->type->kind == TypeData::Array );
                TypeData *lastArray = findLast( a->type );
                if ( type ) {
                        switch ( type->kind ) {
                          case TypeData::Aggregate:
                          case TypeData::Enum:
                                lastArray->base = new TypeData( TypeData::AggregateInst );
                                lastArray->base->aggInst->aggregate = type;
                                if ( type->kind == TypeData::Aggregate ) {
                                        lastArray->base->aggInst->params = maybeClone( type->aggregate->actuals );
                                } // if
                                lastArray->base->qualifiers.splice( lastArray->base->qualifiers.end(), type->qualifiers );
                                break;
                          default:
                                lastArray->base = type;
                        } // switch
                        type = 0;
                } // if
                delete this;
                return a;
        } else {
                return this;
        } // if
}

DeclarationNode *DeclarationNode::addParamList( DeclarationNode *params ) {
        TypeData *ftype = new TypeData( TypeData::Function );
        ftype->function->params = params;
        setBase( type, ftype );
        return this;
}

static TypeData *addIdListToType( TypeData *type, DeclarationNode *ids ) {
        if ( type ) {
                if ( type->kind != TypeData::Function ) {
                        type->base = addIdListToType( type->base, ids );
                } else {
                        type->function->idList = ids;
                } // if
                return type;
        } else {
                TypeData *newtype = new TypeData( TypeData::Function );
                newtype->function->idList = ids;
                return newtype;
        } // if
}

DeclarationNode *DeclarationNode::addIdList( DeclarationNode *ids ) {
        type = addIdListToType( type, ids );
        return this;
}

DeclarationNode *DeclarationNode::addInitializer( InitializerNode *init ) {
        //assert
        initializer = init;
        return this;
}

DeclarationNode *DeclarationNode::cloneBaseType( string *newName ) {
        DeclarationNode *newnode = new DeclarationNode;
        TypeData *srcType = type;
        while ( srcType->base ) {
                srcType = srcType->base;
        } // while
        newnode->type = maybeClone( srcType );
        if ( newnode->type->kind == TypeData::AggregateInst ) {
                // don't duplicate members
                if ( newnode->type->aggInst->aggregate->kind == TypeData::Enum ) {
                        delete newnode->type->aggInst->aggregate->enumeration->constants;
                        newnode->type->aggInst->aggregate->enumeration->constants = 0;
                } else {
                        assert( newnode->type->aggInst->aggregate->kind == TypeData::Aggregate );
                        delete newnode->type->aggInst->aggregate->aggregate->fields;
                        newnode->type->aggInst->aggregate->aggregate->fields = 0;
                } // if
        } // if
        newnode->type->forall = maybeClone( type->forall );
        newnode->storageClasses = storageClasses;
        newnode->name = assign_strptr( newName );
        return newnode;
}

DeclarationNode *DeclarationNode::cloneBaseType( DeclarationNode *o ) {
        if ( o ) {
                o->storageClasses.insert( o->storageClasses.end(), storageClasses.begin(), storageClasses.end() );
                if ( type ) {
                        TypeData *srcType = type;
                        while ( srcType->base ) {
                                srcType = srcType->base;
                        } // while
                        TypeData *newType = srcType->clone();
                        if ( newType->kind == TypeData::AggregateInst ) {
                                // don't duplicate members
                                if ( newType->aggInst->aggregate->kind == TypeData::Enum ) {
                                        delete newType->aggInst->aggregate->enumeration->constants;
                                        newType->aggInst->aggregate->enumeration->constants = 0;
                                } else {
                                        assert( newType->aggInst->aggregate->kind == TypeData::Aggregate );
                                        delete newType->aggInst->aggregate->aggregate->fields;
                                        newType->aggInst->aggregate->aggregate->fields = 0;
                                } // if
                        } // if
                        newType->forall = maybeClone( type->forall );
                        if ( ! o->type ) {
                                o->type = newType;
                        } else {
                                addTypeToType( newType, o->type );
                                delete newType;
                        } // if
                } // if
        } // if
        return o;
}

DeclarationNode *DeclarationNode::cloneType( string *newName ) {
        DeclarationNode *newnode = new DeclarationNode;
        newnode->type = maybeClone( type );
        newnode->storageClasses = storageClasses;
        newnode->name = assign_strptr( newName );
        return newnode;
}

DeclarationNode *DeclarationNode::cloneType( DeclarationNode *o ) {
        if ( o ) {
                o->storageClasses.insert( o->storageClasses.end(), storageClasses.begin(), storageClasses.end() );
                if ( type ) {
                        TypeData *newType = type->clone();
                        if ( ! o->type ) {
                                o->type = newType;
                        } else {
                                addTypeToType( newType, o->type );
                                delete newType;
                        } // if
                } // if
        } // if
        return o;
}

DeclarationNode *DeclarationNode::appendList( DeclarationNode *node ) {
        if ( node != 0 ) {
                set_link( node );
        } // if
        return this;
}

DeclarationNode *DeclarationNode::extractAggregate() const {
        if ( type ) {
                TypeData *ret = type->extractAggregate();
                if ( ret ) {
                        DeclarationNode *newnode = new DeclarationNode;
                        newnode->type = ret;
                        return newnode;
                } // if
        } // if
        return 0;
}

void buildList( const DeclarationNode *firstNode, std::list< Declaration * > &outputList ) {
        SemanticError errors;
        std::back_insert_iterator< std::list< Declaration *> > out( outputList );
        const DeclarationNode *cur = firstNode;
        while ( cur ) {
                try {
                        if ( DeclarationNode *extr = cur->extractAggregate() ) {
                                // handle the case where a structure declaration is contained within an object or type declaration
                                Declaration *decl = extr->build();
                                if ( decl ) {
                                        *out++ = decl;
                                } // if
                        } // if
                        Declaration *decl = cur->build();
                        if ( decl ) {
                                *out++ = decl;
                        } // if
                } catch( SemanticError &e ) {
                        errors.append( e );
                } // try
                cur = dynamic_cast< DeclarationNode *>( cur->get_link() );
        } // while
        if ( ! errors.isEmpty() ) {
                throw errors;
        } // if
}

void buildList( const DeclarationNode *firstNode, std::list< DeclarationWithType *> &outputList ) {
        SemanticError errors;
        std::back_insert_iterator< std::list< DeclarationWithType *> > out( outputList );
        const DeclarationNode *cur = firstNode;
        while ( cur ) {
                try {
///       if ( DeclarationNode *extr = cur->extractAggregate() ) {
///     // handle the case where a structure declaration is contained within an object or type
///     // declaration
///     Declaration *decl = extr->build();
///     if ( decl ) {
///          *out++ = decl;
///     }
///       }
                        Declaration *decl = cur->build();
                        if ( decl ) {
                                if ( DeclarationWithType *dwt = dynamic_cast< DeclarationWithType *>( decl ) ) {
                                        *out++ = dwt;
                                } else if ( StructDecl *agg = dynamic_cast< StructDecl *>( decl ) ) {
                                        StructInstType *inst = new StructInstType( Type::Qualifiers(), agg->get_name() );
                                        *out++ = new ObjectDecl( "", DeclarationNode::NoStorageClass, linkage, 0, inst, 0 );
                                        delete agg;
                                } else if ( UnionDecl *agg = dynamic_cast< UnionDecl *>( decl ) ) {
                                        UnionInstType *inst = new UnionInstType( Type::Qualifiers(), agg->get_name() );
                                        *out++ = new ObjectDecl( "", DeclarationNode::NoStorageClass, linkage, 0, inst, 0 );
                                } // if
                        } // if
                } catch( SemanticError &e ) {
                        errors.append( e );
                } // try
                cur = dynamic_cast< DeclarationNode *>( cur->get_link() );
        } // while
        if ( ! errors.isEmpty() ) {
                throw errors;
        } // if
}

void buildTypeList( const DeclarationNode *firstNode, std::list< Type *> &outputList ) {
        SemanticError errors;
        std::back_insert_iterator< std::list< Type *> > out( outputList );
        const DeclarationNode *cur = firstNode;
        while ( cur ) {
                try {
                        *out++ = cur->buildType();
                } catch( SemanticError &e ) {
                        errors.append( e );
                } // try
                cur = dynamic_cast< DeclarationNode *>( cur->get_link() );
        } // while
        if ( ! errors.isEmpty() ) {
                throw errors;
        } // if
}

Declaration *DeclarationNode::build() const {
        if ( type ) {
                Declaration *newDecl = type->buildDecl( name, buildStorageClass(), maybeBuild< Expression >( bitfieldWidth ), buildFuncSpecifier( Inline ), buildFuncSpecifier( Noreturn ), linkage, maybeBuild< Initializer >(initializer) );
                return newDecl;
        } // if
        if ( ! buildFuncSpecifier( Inline ) && ! buildFuncSpecifier( Noreturn ) ) {
                return new ObjectDecl( name, buildStorageClass(), linkage, maybeBuild< Expression >( bitfieldWidth ), 0, maybeBuild< Initializer >( initializer ) );
        } // if
        throw SemanticError( "invalid function specifier in declaration of ", this );
}

Type *DeclarationNode::buildType() const {
        assert( type );

        switch ( type->kind ) {
          case TypeData::Enum:
                return new EnumInstType( type->buildQualifiers(), type->enumeration->name );
          case TypeData::Aggregate: {
                  ReferenceToType *ret;
                  switch ( type->aggregate->kind ) {
                        case DeclarationNode::Struct:
                          ret = new StructInstType( type->buildQualifiers(), type->aggregate->name );
                          break;
                        case DeclarationNode::Union:
                          ret = new UnionInstType( type->buildQualifiers(), type->aggregate->name );
                          break;
                        case DeclarationNode::Context:
                          ret = new ContextInstType( type->buildQualifiers(), type->aggregate->name );
                          break;
                        default:
                          assert( false );
                  } // switch
                  buildList( type->aggregate->actuals, ret->get_parameters() );
                  return ret;
          }
          case TypeData::Symbolic: {
                  TypeInstType *ret = new TypeInstType( type->buildQualifiers(), type->symbolic->name, false );
                  buildList( type->symbolic->actuals, ret->get_parameters() );
                  return ret;
          }
          default:
                return type->build();
        } // switch
}

DeclarationNode::StorageClass DeclarationNode::buildStorageClass() const {
        DeclarationNode::StorageClass ret = DeclarationNode::NoStorageClass;
        for ( std::list< DeclarationNode::StorageClass >::const_iterator i = storageClasses.begin(); i != storageClasses.end(); ++i ) {
          if ( *i == DeclarationNode::Inline || *i == DeclarationNode::Noreturn ) continue; // ignore function specifiers
          if ( ret != DeclarationNode::NoStorageClass ) {       // already have a valid storage class ?
                        throw SemanticError( "invalid combination of storage classes in declaration of ", this );
                } // if
                ret = *i;
        } // for
        return ret;
}

bool DeclarationNode::buildFuncSpecifier( DeclarationNode::StorageClass key ) const {
        std::list< DeclarationNode::StorageClass >::const_iterator first = std::find( storageClasses.begin(), storageClasses.end(), key );
  if ( first == storageClasses.end() ) return false;    // not found
        first = std::find( ++first, storageClasses.end(), key ); // found
  if ( first == storageClasses.end() ) return true;             // not found again
        throw SemanticError( "duplicate function specifier in declaration of ", this );
}

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