public static GATNode _selectionStmt(this LL1Processor ll1)
{
var node = new GATNode();
node.generator = SelectionStmt;
WordContainer.Advance(WordType.IF);
WordContainer.Advance(WordType.BRACKET_L);
var expression = ll1._expression();
WordContainer.Advance(WordType.BRACKET_R);
var statement = ll1._statement();
node.AddChild(expression); //0
node.AddChild(GATNode.CodeNode()); //1
node.AddChild(statement); //2
var next = WordContainer.GetWordType();
if (next == WordType.ELSE)
{
WordContainer.Advance(WordType.ELSE);
var elseStatement = ll1._statement();
node.AddChild(GATNode.CodeNode()); //3
node.AddChild(GATNode.LabelNode()); //4
node.AddChild(elseStatement); //5
}
node.AddChild(GATNode.LabelNode()); //3-6
return(node);
}
public static GATNode _statementList(this LL1Processor ll1)
{
var node = new GATNode();
node.generator = StatmentList;
var next = WordContainer.GetWordType();
while (StatementProc.first.Contains(next))
{
var statement = ll1._statement();
node.AddChild(statement);
next = WordContainer.GetWordType();
}
return(node);
}
public static GATNode _iterationStmt(this LL1Processor ll1)
{
var node = new GATNode();
node.generator = IterationStmt;
WordContainer.Advance(WordType.WHILE);
WordContainer.Advance(WordType.BRACKET_L);
node.AddChild(GATNode.LabelNode());//0
var expression = ll1._expression();
node.AddChild(expression); //1
node.AddChild(GATNode.CodeNode()); //2
WordContainer.Advance(WordType.BRACKET_R);
var statement = ll1._statement();
node.AddChild(statement); //3
node.AddChild(GATNode.CodeNode()); //4
node.AddChild(GATNode.LabelNode()); //5
return(node);
}