/// <summary>
/// Reads a conditional expression.
/// </summary>
/// <param name="leftHandSide">
/// The expression on the left hand side of the operator.
/// </param>
/// <param name="previousPrecedence">
/// The precedence of the expression just before this one.
/// </param>
/// <param name="unsafeCode">
/// Indicates whether the code being parsed resides in an unsafe code block.
/// </param>
/// <returns>
/// Returns the expression.
/// </returns>
private ConditionalExpression GetConditionalExpression(Expression leftHandSide, ExpressionPrecedence previousPrecedence, bool unsafeCode)
{
Param.AssertNotNull(leftHandSide, "leftHandSide");
Param.Ignore(unsafeCode);
Param.Ignore(previousPrecedence);
ConditionalExpression expression = null;
if (CheckPrecedence(previousPrecedence, ExpressionPrecedence.Conditional))
{
Reference<ICodePart> expressionReference = new Reference<ICodePart>();
// Get the first operator.
this.tokens.Add(this.GetOperatorToken(OperatorType.ConditionalQuestionMark, expressionReference));
// Get the expression on the right-hand side of the operator.
Expression trueValue = this.GetOperatorRightHandExpression(ExpressionPrecedence.Conditional, expressionReference, unsafeCode);
// Get the next operator and make sure it is the correct type.
this.tokens.Add(this.GetOperatorToken(OperatorType.ConditionalColon, expressionReference));
// Get the expression on the right-hand side of the operator.
Expression falseValue = this.GetOperatorRightHandExpression(ExpressionPrecedence.None, expressionReference, unsafeCode);
// Create the partial token list for the expression.
CsTokenList partialTokens = new CsTokenList(this.tokens, leftHandSide.Tokens.First, this.tokens.Last);
// Create and return the expression.
expression = new ConditionalExpression(partialTokens, leftHandSide, trueValue, falseValue);
expressionReference.Target = expression;
}
return expression;
}
/// <summary>
/// The save.
/// </summary>
/// <param name="conditionalExpression">
/// The conditional expression.
/// </param>
private void Save(ConditionalExpression conditionalExpression)
{
this.cppWriter.Write('(');
@switch(conditionalExpression.Condition);
this.cppWriter.Write(") ? ");
@switch(conditionalExpression.TrueExpression);
this.cppWriter.Write(" : ");
@switch(conditionalExpression.FalseExpression);
}