public static ArithmeticEvaluationStatement CreatePrefixIncrement(IncrementOperator op,
EvaluationStatement operand, StatementInfo info, IStatement parentStatement = null)
{
return(new ArithmeticEvaluationStatement(true, null, op, operand, info)
{
ParentStatement = parentStatement
});
}
private IExpression ParseUnaryExpression()
{
if (this.TryParse(TokenType.Operator, "+", "-", "!"))
{
Token oper = this.lexer.NextToken();
IExpression unaryExpression = this.ParseUnaryExpression();
if (oper.Value == "!")
{
return(new NotExpression(unaryExpression));
}
ArithmeticOperator op = oper.Value == "+" ? ArithmeticOperator.Plus : ArithmeticOperator.Minus;
return(new ArithmeticUnaryExpression(op, unaryExpression));
}
if (this.TryParse(TokenType.Operator, "++", "--"))
{
Token oper = this.lexer.NextToken();
IExpression expression = this.ParseTermExpression();
IncrementOperator op = oper.Value == "++" ? IncrementOperator.PreIncrement : IncrementOperator.PreDecrement;
return(new IncrementExpression(expression, op));
}
if (this.TryParse(TokenType.Operator, "<-", "@"))
{
this.lexer.NextToken();
IExpression expression = this.ParseTermExpression();
return(new GetValueExpression(expression));
}
IExpression termexpr = this.ParseTermExpression();
if (this.TryParse(TokenType.Operator, "++", "--"))
{
Token oper = this.lexer.NextToken();
IncrementOperator op = oper.Value == "++" ? IncrementOperator.PostIncrement : IncrementOperator.PostDecrement;
return(new IncrementExpression(termexpr, op));
}
return(termexpr);
}
public IncrementExpression(IExpression expression, IncrementOperator oper)
: base(expression)
{
this.oper = oper;
}
public IncrementExpression(IExpression expression, IncrementOperator oper)
: base(expression)
{
this.oper = oper;
}
