/// <summary>
/// Reads the next if-statement from the file and returns it.
/// </summary>
/// <param name="parentReference">The parent code unit.</param>
/// <param name="unsafeCode">Indicates whether the code being parsed resides in an unsafe code block.</param>
/// <returns>Returns the statement.</returns>
private IfStatement ParseIfStatement(Reference<ICodePart> parentReference, bool unsafeCode)
{
Param.AssertNotNull(parentReference, "parentReference");
Param.Ignore(unsafeCode);
var statementReference = new Reference<ICodePart>();
// Move past the if keyword.
CsToken firstToken = this.GetToken(CsTokenType.If, SymbolType.If, parentReference, statementReference);
Node<CsToken> firstTokenNode = this.tokens.InsertLast(firstToken);
// Get the opening parenthesis.
Bracket openParenthesis = this.GetBracketToken(CsTokenType.OpenParenthesis, SymbolType.OpenParenthesis, statementReference);
Node<CsToken> openParenthesisNode = this.tokens.InsertLast(openParenthesis);
// Get the expression within the parenthesis.
Expression expression = this.GetNextExpression(ExpressionPrecedence.None, statementReference, unsafeCode);
if (expression == null)
{
throw this.CreateSyntaxException();
}
// Get the closing parenthesis.
Bracket closeParenthesis = this.GetBracketToken(CsTokenType.CloseParenthesis, SymbolType.CloseParenthesis, statementReference);
Node<CsToken> closeParenthesisNode = this.tokens.InsertLast(closeParenthesis);
openParenthesis.MatchingBracketNode = closeParenthesisNode;
closeParenthesis.MatchingBracketNode = openParenthesisNode;
// Get the embedded statement.
Statement childStatement = this.GetNextStatement(statementReference, unsafeCode);
if (childStatement == null)
{
throw new SyntaxException(this.document.SourceCode, firstToken.LineNumber);
}
// Create the token list for the statement.
CsTokenList partialTokens = new CsTokenList(this.tokens, firstTokenNode, this.tokens.Last);
// Create the if-statement.
IfStatement statement = new IfStatement(partialTokens, expression);
statement.EmbeddedStatement = childStatement;
statementReference.Target = statement;
// Check if there is an else or an else-if attached to this statement.
ElseStatement attached = this.GetAttachedElseStatement(statementReference, statement, unsafeCode);
if (attached != null)
{
statement.AttachedElseStatement = attached;
}
return statement;
}
private IfStatement ParseIfStatement(bool unsafeCode)
{
CsToken item = this.GetToken(CsTokenType.If, SymbolType.If);
Microsoft.StyleCop.Node<CsToken> firstItemNode = this.tokens.InsertLast(item);
Bracket bracketToken = this.GetBracketToken(CsTokenType.OpenParenthesis, SymbolType.OpenParenthesis);
Microsoft.StyleCop.Node<CsToken> node2 = this.tokens.InsertLast(bracketToken);
Expression nextExpression = this.GetNextExpression(ExpressionPrecedence.None, unsafeCode);
if (nextExpression == null)
{
throw this.CreateSyntaxException();
}
Bracket bracket2 = this.GetBracketToken(CsTokenType.CloseParenthesis, SymbolType.CloseParenthesis);
Microsoft.StyleCop.Node<CsToken> node3 = this.tokens.InsertLast(bracket2);
bracketToken.MatchingBracketNode = node3;
bracket2.MatchingBracketNode = node2;
Statement nextStatement = this.GetNextStatement(unsafeCode);
if (nextStatement == null)
{
throw new SyntaxException(this.document.SourceCode, item.LineNumber);
}
CsTokenList tokens = new CsTokenList(this.tokens, firstItemNode, this.tokens.Last);
IfStatement statement2 = new IfStatement(tokens, nextExpression);
statement2.EmbeddedStatement = nextStatement;
ElseStatement attachedElseStatement = this.GetAttachedElseStatement(unsafeCode);
if (attachedElseStatement != null)
{
statement2.AttachedElseStatement = attachedElseStatement;
}
return statement2;
}
