/* shift-expression-p:
| expression-shift-operator additive-expression shift-expression-p
| EPSILON */
private ExpressionNode shift_expression_p(ExpressionNode leftExpression)
{
printIfDebug("shift_expression_p");
if (pass(shiftOperatorOptions))
{
Token shiftOperator = token;
consumeToken();
var additiveExpression = additive_expression();
ExpressionNode resultExpression = null;
if (shiftOperator.type == TokenType.OP_SHIFT_LEFT)
{
resultExpression = new ShiftLeftNode(leftExpression, additiveExpression, shiftOperator);
}
else
{
resultExpression = new ShiftRightNode(leftExpression, additiveExpression, shiftOperator);
}
return(shift_expression_p(resultExpression));
}
else
{
return(leftExpression);
}
}
private Node ParseShift()
{
var lNode = this.ParseAdditive();
while (this.AreMoreTokens)
{
if (this.currentToken.Equals(TokenType.Symbol, "<<"))
{
this.ReadNextToken();
lNode = new ShiftLeftNode(lNode, this.ParseAdditive());
}
else if (this.currentToken.Equals(TokenType.Symbol, ">>"))
{
this.ReadNextToken();
lNode = new ShiftRightNode(lNode, this.ParseAdditive());
}
else
{
break;
}
}
return(lNode);
}
private Node ParseShift()
{
var lNode = this.ParseAdditive();
while (this.AreMoreTokens)
{
if (this.currentToken.Equals(TokenType.Symbol, "<<"))
{
this.ReadNextToken();
lNode = new ShiftLeftNode(lNode, this.ParseAdditive());
}
else if (this.currentToken.Equals(TokenType.Symbol, ">>"))
{
this.ReadNextToken();
lNode = new ShiftRightNode(lNode, this.ParseAdditive());
}
else
{
break;
}
}
return lNode;
}
