/// <summary>
/// Reads the next case-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 SwitchCaseStatement ParseSwitchCaseStatement(Reference<ICodePart> parentReference, bool unsafeCode)
{
Param.AssertNotNull(parentReference, "parentReference");
Param.Ignore(unsafeCode);
var statementReference = new Reference<ICodePart>();
// Move past the case keyword.
CsToken firstToken = this.GetToken(CsTokenType.Case, SymbolType.Case, parentReference, statementReference);
Node<CsToken> firstTokenNode = this.tokens.InsertLast(firstToken);
// Get the name.
Symbol symbol = this.GetNextSymbol(statementReference);
if (symbol.SymbolType != SymbolType.Other &&
symbol.SymbolType != SymbolType.String &&
symbol.SymbolType != SymbolType.Number &&
symbol.SymbolType != SymbolType.Null &&
symbol.SymbolType != SymbolType.OpenParenthesis &&
symbol.SymbolType != SymbolType.Minus &&
symbol.SymbolType != SymbolType.Plus &&
symbol.SymbolType != SymbolType.True &&
symbol.SymbolType != SymbolType.False &&
symbol.SymbolType != SymbolType.Sizeof &&
symbol.SymbolType != SymbolType.Typeof &&
symbol.SymbolType != SymbolType.Checked &&
symbol.SymbolType != SymbolType.Unchecked)
{
throw this.CreateSyntaxException();
}
Expression identifier = this.GetNextExpression(ExpressionPrecedence.None, statementReference, unsafeCode);
// Get the colon.
this.tokens.Add(this.GetToken(CsTokenType.LabelColon, SymbolType.Colon, statementReference));
// Create the statement.
SwitchCaseStatement caseStatement = new SwitchCaseStatement(identifier);
// Get each of the sub-statements beneath this statement.
while (true)
{
// Check the type of the next symbol.
symbol = this.GetNextSymbol(statementReference);
// Check if we've reached the end of the case statement.
if (symbol.SymbolType == SymbolType.CloseCurlyBracket ||
symbol.SymbolType == SymbolType.Case ||
symbol.SymbolType == SymbolType.Default)
{
break;
}
// Read the next child statement.
Statement statement = this.GetNextStatement(statementReference, unsafeCode, caseStatement.Variables);
if (statement == null)
{
throw this.CreateSyntaxException();
}
// Add it to the case statement.
caseStatement.AddStatement(statement);
}
// Create the token list for the case statement.
caseStatement.Tokens = new CsTokenList(this.tokens, firstTokenNode, this.tokens.Last);
statementReference.Target = caseStatement;
return caseStatement;
}
private SwitchCaseStatement ParseSwitchCaseStatement(bool unsafeCode)
{
CsToken item = this.GetToken(CsTokenType.Case, SymbolType.Case);
Microsoft.StyleCop.Node<CsToken> firstItemNode = this.tokens.InsertLast(item);
Symbol nextSymbol = this.GetNextSymbol();
if (((((nextSymbol.SymbolType != SymbolType.Other) && (nextSymbol.SymbolType != SymbolType.String)) && ((nextSymbol.SymbolType != SymbolType.Number) && (nextSymbol.SymbolType != SymbolType.Null))) && (((nextSymbol.SymbolType != SymbolType.OpenParenthesis) && (nextSymbol.SymbolType != SymbolType.Minus)) && ((nextSymbol.SymbolType != SymbolType.Plus) && (nextSymbol.SymbolType != SymbolType.True)))) && (nextSymbol.SymbolType != SymbolType.False))
{
throw this.CreateSyntaxException();
}
Expression nextExpression = this.GetNextExpression(ExpressionPrecedence.None, unsafeCode);
this.tokens.Add(this.GetToken(CsTokenType.LabelColon, SymbolType.Colon));
SwitchCaseStatement statement = new SwitchCaseStatement(nextExpression);
while (true)
{
nextSymbol = this.GetNextSymbol();
if (((nextSymbol.SymbolType == SymbolType.CloseCurlyBracket) || (nextSymbol.SymbolType == SymbolType.Case)) || (nextSymbol.SymbolType == SymbolType.Default))
{
break;
}
Statement nextStatement = this.GetNextStatement(unsafeCode, statement.Variables);
if (nextStatement == null)
{
throw this.CreateSyntaxException();
}
statement.AddStatement(nextStatement);
}
statement.Tokens = new CsTokenList(this.tokens, firstItemNode, this.tokens.Last);
return statement;
}