/// <summary>
/// Reads an expression wrapped in parenthesis.
/// </summary>
/// <param name="parentProxy">Represents the parent item.</param>
/// <returns>Returns the expression.</returns>
private ParenthesizedExpression GetConditionalPreprocessorParenthesizedExpression(CodeUnitProxy parentProxy)
{
Param.AssertNotNull(parentProxy, "parentProxy");
this.AdvanceToNextConditionalDirectiveCodeSymbol(parentProxy);
var expressionProxy = new CodeUnitProxy(this.document);
// Get the opening parenthesis.
Symbol firstSymbol = this.symbols.Peek(1);
if (firstSymbol == null || firstSymbol.SymbolType != SymbolType.OpenParenthesis)
{
throw new SyntaxException(this.document, firstSymbol.LineNumber);
}
this.symbols.Advance();
var openParenthesis = new OpenParenthesisToken(this.document, firstSymbol.Text, firstSymbol.Location, this.symbols.Generated);
expressionProxy.Children.Add(openParenthesis);
// Get the inner expression.
Expression expression = this.GetNextConditionalPreprocessorExpression(this.document, expressionProxy, ExpressionPrecedence.None);
if (expression == null)
{
throw new SyntaxException(this.document, firstSymbol.LineNumber);
}
// Get the closing parenthesis.
this.AdvanceToNextConditionalDirectiveCodeSymbol(expressionProxy);
Symbol symbol = this.symbols.Peek(1);
if (symbol == null || symbol.SymbolType != SymbolType.CloseParenthesis)
{
throw new SyntaxException(this.document, firstSymbol.LineNumber);
}
this.symbols.Advance();
var closeParenthesis = new CloseParenthesisToken(this.document, symbol.Text, symbol.Location, this.symbols.Generated);
expressionProxy.Children.Add(closeParenthesis);
openParenthesis.MatchingBracket = closeParenthesis;
closeParenthesis.MatchingBracket = openParenthesis;
// Create and return the expression.
var parenthesizedExpression = new ParenthesizedExpression(expressionProxy, expression);
parentProxy.Children.Add(parenthesizedExpression);
return(parenthesizedExpression);
}
/// <summary>
/// Reads an expression wrapped in parenthesis expression.
/// </summary>
/// <param name="parentProxy">Represents the parent item.</param>
/// <param name="unsafeCode">Indicates whether the code being parsed resides in an unsafe code block.</param>
/// <returns>Returns the expression.</returns>
private ParenthesizedExpression GetParenthesizedExpression(CodeUnitProxy parentProxy, bool unsafeCode)
{
Param.AssertNotNull(parentProxy, "parentProxy");
Param.Ignore(unsafeCode);
this.AdvanceToNextCodeSymbol(parentProxy);
var expressionProxy = new CodeUnitProxy(this.document);
// Get the opening parenthesis.
BracketToken openParenthesis = (BracketToken)this.GetToken(expressionProxy, TokenType.OpenParenthesis, SymbolType.OpenParenthesis);
// Get the inner expression.
Expression innerExpression = this.GetNextExpression(expressionProxy, ExpressionPrecedence.None, unsafeCode);
if (innerExpression == null)
{
throw this.CreateSyntaxException();
}
// Get the closing parenthesis.
BracketToken closeParenthesis = (BracketToken)this.GetToken(expressionProxy, TokenType.CloseParenthesis, SymbolType.CloseParenthesis);
openParenthesis.MatchingBracket = closeParenthesis;
closeParenthesis.MatchingBracket = openParenthesis;
// Create and return the expression.
var expression = new ParenthesizedExpression(expressionProxy, innerExpression);
parentProxy.Children.Add(expression);
return expression;
}
/// <summary>
/// Reads an expression wrapped in parenthesis.
/// </summary>
/// <param name="parentProxy">Represents the parent item.</param>
/// <returns>Returns the expression.</returns>
private ParenthesizedExpression GetConditionalPreprocessorParenthesizedExpression(CodeUnitProxy parentProxy)
{
Param.AssertNotNull(parentProxy, "parentProxy");
this.AdvanceToNextConditionalDirectiveCodeSymbol(parentProxy);
var expressionProxy = new CodeUnitProxy(this.document);
// Get the opening parenthesis.
Symbol firstSymbol = this.symbols.Peek(1);
if (firstSymbol == null || firstSymbol.SymbolType != SymbolType.OpenParenthesis)
{
throw new SyntaxException(this.document, firstSymbol.LineNumber);
}
this.symbols.Advance();
var openParenthesis = new OpenParenthesisToken(this.document, firstSymbol.Text, firstSymbol.Location, this.symbols.Generated);
expressionProxy.Children.Add(openParenthesis);
// Get the inner expression.
Expression expression = this.GetNextConditionalPreprocessorExpression(this.document, expressionProxy, ExpressionPrecedence.None);
if (expression == null)
{
throw new SyntaxException(this.document, firstSymbol.LineNumber);
}
// Get the closing parenthesis.
this.AdvanceToNextConditionalDirectiveCodeSymbol(expressionProxy);
Symbol symbol = this.symbols.Peek(1);
if (symbol == null || symbol.SymbolType != SymbolType.CloseParenthesis)
{
throw new SyntaxException(this.document, firstSymbol.LineNumber);
}
this.symbols.Advance();
var closeParenthesis = new CloseParenthesisToken(this.document, symbol.Text, symbol.Location, this.symbols.Generated);
expressionProxy.Children.Add(closeParenthesis);
openParenthesis.MatchingBracket = closeParenthesis;
closeParenthesis.MatchingBracket = openParenthesis;
// Create and return the expression.
var parenthesizedExpression = new ParenthesizedExpression(expressionProxy, expression);
parentProxy.Children.Add(parenthesizedExpression);
return parenthesizedExpression;
}
