private PreprocessorLine SkipElseBlock()
{
PreprocessorLine line = SkipBlock();
if (line.Type == PreprocessorTokenType.Endif)
{
line = null;
}
else
{
ReportError(PreprocessorError.PpEndifExpected);
}
return(line);
}
public PreprocessorLine ParseNextLine(TextBuffer text, IDictionary defines)
{
PreprocessorLine line = null;
do
{
lexer.SkipWhiteSpace();
if (lexer.Eof)
{
line = new PreprocessorLine(PreprocessorTokenType.EndOfLine);
}
else if (text.PeekChar() != '#')
{
lexer.IgnoreRestOfLine();
}
else
{
line = Parse(text, defines);
}
} while (line == null);
return(line);
}
private void DoSimpleLine(PreprocessorLine line)
{
switch (line.Type)
{
case PreprocessorTokenType.Define:
case PreprocessorTokenType.Undef:
if (FoundNonComment())
{
// have more than BOF
ReportError(PreprocessorError.DefineAfterToken);
}
else
{
PreprocessorDeclarationLine decl = (PreprocessorDeclarationLine)line;
if (decl.Type == PreprocessorTokenType.Define)
{
defines.Add(decl.Identifier.Text, null);
}
else
{
defines.Remove(decl.Identifier.Text);
}
}
break;
case PreprocessorTokenType.Warning:
ReportFormattedError(PreprocessorError.PpWarning, ((PreprocessorControlLine)line).Message);
break;
case PreprocessorTokenType.Error:
ReportFormattedError(PreprocessorError.PpError, ((PreprocessorControlLine)line).Message);
break;
case PreprocessorTokenType.Line:
{
PreprocessorLineNumberLine lineNumber = (PreprocessorLineNumberLine)line;
if (lineNumber.File != null)
{
lineMap.AddEntry(text.Line, lineNumber.Line, lineNumber.File);
}
else
{
lineMap.AddEntry(text.Line, lineNumber.Line);
}
}
break;
case PreprocessorTokenType.Default:
lineMap.AddEntry(text.Line, text.Line, lineMap.FileName);
break;
case PreprocessorTokenType.Hidden:
// #line hidden is for the weak
break;
case PreprocessorTokenType.Pragma:
// no pragma's suported yet
break;
default:
Debug.Fail("Bad preprocessor line");
break;
}
}
private PreprocessorLine LexBlock()
{
while (lexer.LexBlock(text, tokens, includeComments))
{
PreprocessorLine line = parser.Parse(text, defines);
if (line != null)
{
DoLine:
switch (line.Type)
{
case PreprocessorTokenType.Define:
case PreprocessorTokenType.Undef:
case PreprocessorTokenType.Warning:
case PreprocessorTokenType.Error:
case PreprocessorTokenType.Line:
case PreprocessorTokenType.Default:
case PreprocessorTokenType.Hidden:
case PreprocessorTokenType.Pragma:
DoSimpleLine(line);
break;
case PreprocessorTokenType.Region:
line = LexBlock();
if (line.Type == PreprocessorTokenType.EndRegion)
{
break;
}
else
{
ReportError(PreprocessorError.EndRegionExpected);
goto DoLine;
}
case PreprocessorTokenType.If:
line = DoIf((PreprocessorIfLine)line);
if (line != null)
{
goto DoLine;
}
break;
case PreprocessorTokenType.EndRegion:
case PreprocessorTokenType.Elif:
case PreprocessorTokenType.Else:
case PreprocessorTokenType.Endif:
case PreprocessorTokenType.EndOfLine:
return(line);
}
}
}
return(new PreprocessorLine(PreprocessorTokenType.EndOfLine));
}
