/// <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);
Reference<ICodePart> 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;
}
/// <summary>
/// The save.
/// </summary>
/// <param name="switchCaseStatement">
/// The switch case statement.
/// </param>
private void Save(SwitchCaseStatement switchCaseStatement)
{
this.cppWriter.Write("case ");
@switch(switchCaseStatement.Identifier);
this.cppWriter.WriteLine(":");
this.Save(switchCaseStatement, SaveICodeUnit.IfNotEmpty | SaveICodeUnit.NoBrackets);
}