public static GATNode _statement(this LL1Processor ll1)
{
var node = new GATNode();
var next = WordContainer.GetWordType();
if (ExpressionStmtProc.first.Contains(next))
{
var expressionStmt = ll1._expressionStmt();
node.AddChild(expressionStmt);
node.generator = Statement1;
return(node);
}
var offset = 0;
switch (WordContainer.GetWordType(offset))
{
case WordType.BRACE_L:
{
var compoundStmt = ll1._compoundStmt();
node.AddChild(compoundStmt);
node.generator = Statement2;
break;
}
case WordType.IF:
{
var selectionStmt = ll1._selectionStmt();
node.AddChild(selectionStmt);
node.generator = Statement3;
break;
}
case WordType.WHILE:
{
var iterationStmt = ll1._iterationStmt();
node.AddChild(iterationStmt);
node.generator = Statement4;
break;
}
case WordType.RETURN:
{
var returnStmt = ll1._returnStmt();
node.AddChild(returnStmt);
node.generator = Statement5;
break;
}
default:
{
throw new BNFException();
}
}
return(node);
}
public static GATNode _funDeclaration(this LL1Processor ll1)
{
var node = new GATNode();
var typeSpecifier = ll1._typeSpecifier();
var id = WordContainer.Advance(WordType.ID);
WordContainer.Advance(WordType.BRACKET_L);
var param = ll1._params();
WordContainer.Advance(WordType.BRACKET_R);
var compoundStmt = ll1._compoundStmt();
//
node.name = id.value;
//
node.generator = FunDeclaration;
node.AddChild(typeSpecifier); //0
node.AddChild(id); //1
node.AddChild(param); //2
node.AddChild(GATNode.LabelNode()); //3
node.AddChild(compoundStmt); //4
return(node);
}