internal SyntaxTree(SourceText text, Func<SyntaxTree, Tuple<SyntaxNode, List<FileSegment>>> parseFunc)
{
Text = text;
var parsed = parseFunc(this);
Root = parsed.Item1;
_fileSegments = parsed.Item2;
}
public static IReadOnlyList<SyntaxToken> ParseAllTokens(SourceText sourceText, IIncludeFileSystem fileSystem = null)
{
var tokens = new List<SyntaxToken>();
var lexer = new HlslLexer(sourceText, fileSystem: fileSystem);
SyntaxToken token;
do
{
tokens.Add(token = lexer.Lex(LexerMode.Syntax));
} while (token.Kind != SyntaxKind.EndOfFileToken);
return tokens;
}
private static SyntaxTree Parse(SourceText sourceText, ParserOptions options, IIncludeFileSystem fileSystem, Func<HlslParser, SyntaxNode> parseFunc)
{
var lexer = new HlslLexer(sourceText, options, fileSystem);
var parser = new HlslParser(lexer);
var result = new SyntaxTree(sourceText,
syntaxTree => new Tuple<SyntaxNode, List<FileSegment>>(
parseFunc(parser),
lexer.FileSegments));
Debug.WriteLine(DateTime.Now + " - Finished parsing");
return result;
}
public HlslLexer(SourceText text, ParserOptions options = null, IIncludeFileSystem fileSystem = null)
{
_fileSystem = fileSystem ?? new DummyFileSystem();
_directives = DirectiveStack.Empty;
if (options != null)
foreach (var define in options.PreprocessorDefines)
{
_directives = _directives.Add(new Directive(new ObjectLikeDefineDirectiveTriviaSyntax(
null, null, SyntaxFactory.ParseToken(define), new List<SyntaxToken>
{
SyntaxFactory.ParseToken("1")
}, null, true)));
}
ExpandMacros = true;
FileSegments = new List<FileSegment>();
_includeStack = new Stack<IncludeContext>();
PushIncludeContext(text);
}
public static SyntaxTree ParseSyntaxTree(SourceText sourceText, ParserOptions options = null, IIncludeFileSystem fileSystem = null, CancellationToken cancellationToken = default(CancellationToken))
{
return Parse(sourceText, options, fileSystem ?? new DummyFileSystem(), p => p.ParseCompilationUnit(cancellationToken));
}
public IncludeContext(SourceText text)
{
CharReader = new CharReader(text);
Text = text;
}
private void PushIncludeContext(SourceText text)
{
_currentFileSegmentAbsolutePosition = FileSegments.Sum(x => x.Length);
var includeContext = new IncludeContext(text);
_includeStack.Push(includeContext);
_charReader = includeContext.CharReader;
FileSegments.Add(new FileSegment(text, 0));
}
public FileSegment(SourceText text, int start)
{
Text = text;
Start = start;
}
private static IReadOnlyList<SyntaxToken> LexAllTokens(SourceText text, IIncludeFileSystem fileSystem = null)
{
return SyntaxFactory.ParseAllTokens(text, fileSystem);
}
public CharReader(SourceText text)
{
_text = text;
}