BreakableNode( const RefDNode& refNode): ProgNode( refNode)
{
if( refNode->GetFirstChild() != RefDNode(antlr::nullAST))
{
down = NewProgNode( refNode->GetFirstChild());
}
if( refNode->GetNextSibling() != RefDNode(antlr::nullAST))
{
right = NewProgNode( refNode->GetNextSibling());
}
}
BLOCKNode( const RefDNode& refNode): ProgNode( refNode)
{
if( refNode->GetFirstChild() != RefDNode(antlr::nullAST))
{
down = NewProgNode( refNode->GetFirstChild());
}
if( refNode->GetNextSibling() != RefDNode(antlr::nullAST))
{
right = NewProgNode( refNode->GetNextSibling());
// first statement
if( down != NULL)
down->GetLastSibling()->KeepRight( right);
else
this->KeepDown( right);
}
}
IFNode( const RefDNode& refNode): ProgNode( refNode)
{
if( refNode->GetFirstChild() != RefDNode(antlr::nullAST))
{
down = NewProgNode( refNode->GetFirstChild());
}
if( refNode->GetNextSibling() != RefDNode(antlr::nullAST))
{
right = NewProgNode( refNode->GetNextSibling());
}
assert( down != NULL);
// first alternative
if( right != NULL)
{
ProgNodeP s1 = down->GetNextSibling(); // skip expr
s1->GetLastSibling()->KeepRight( right);
}
}
IF_ELSENode( const RefDNode& refNode): ProgNode( refNode)
{
// std::cout << "IF_ELSENode" << std::endl;
if( refNode->GetFirstChild() != RefDNode(antlr::nullAST))
{
down = NewProgNode( refNode->GetFirstChild());
}
if( refNode->GetNextSibling() != RefDNode(antlr::nullAST))
{
right = NewProgNode( refNode->GetNextSibling());
}
assert( down != NULL);
// IF expr s1 s2
// first alternative
// s1 is always a BLOCK (gdlc.tree.g, if_statement)
// right MUST be set here even if NULL as it IS set to 2nd alternative
ProgNodeP s1 = down->GetNextSibling(); // skip expr
if( s1->GetFirstChild() == NULL || s1->KeepDown())
{
s1->KeepDown( right);
}
else
{
s1->GetFirstChild()->GetLastSibling()->KeepRight( right);
}
if( right != NULL)
{
// 2nd alternative
ProgNodeP s2 = s1->GetNextSibling();
s2->GetLastSibling()->KeepRight( right); // disconnect s2
}
}
