protected override void Stmt(string text, LNode expected, Action <EcsNodePrinter> configure = null, Mode mode = Mode.Both)
{
bool exprMode = (mode & Mode.Expression) != 0;
if ((mode & Mode.ParserTest) == 0)
{
return;
}
// This is the easy way:
//LNode result = EcsLanguageService.Value.ParseSingle(text, MessageSink.Console, exprMode ? ParsingService.Exprs : ParsingService.Stmts);
// But to make debugging easier, I'll do it the long way:
ILexer <Token> lexer = EcsLanguageService.Value.Tokenize(new UString(text), "", MessageSink.Console);
var preprocessed = new EcsPreprocessor(lexer);
var treeified = new TokensToTree(preprocessed, false);
var sink = (mode & Mode.ExpectAndDropParserError) != 0 ? new MessageHolder() : (IMessageSink)MessageSink.Console;
var parser = new EcsParser(treeified.Buffered(), lexer.SourceFile, sink);
LNode result = exprMode ? parser.ExprStart(false) : LNode.List(parser.ParseStmtsGreedy()).AsLNode(S.Splice);
AreEqual(TokenType.EOF, parser.LT0.Type(), string.Format("Parser stopped before EOF at [{0}] in {1}", parser.LT0.StartIndex, text));
AreEqual(expected, result);
if (sink is MessageHolder)
{
GreaterOrEqual(((MessageHolder)sink).List.Count, 1, "Expected an error but got none for " + text);
}
}
protected override void Stmt(string text, LNode expected, Action <EcsPrinterOptions> configure = null, Mode mode = Mode.Both)
{
bool exprMode = (mode & Mode.Expression) != 0;
if ((mode & (Mode.ParserTest | Mode.ExpectAndDropParserError)) == 0)
{
return;
}
var sink = (mode & Mode.ExpectAndDropParserError) != 0 ? new MessageHolder() : (IMessageSink)ConsoleMessageSink.Value;
using (Token.SetToStringStrategy(TokenExt.ToString)) // debugging aid
{
// This is the easy way:
// LNode result = EcsLanguageService.Value.ParseSingle(text, sink, exprMode ? ParsingMode.Expressions : ParsingMode.Statements, preserveComments: true);
// But to make debugging easier, I'll do it the long way:
ILexer <Token> lexer = EcsLanguageService.Value.Tokenize(new UString(text), "", sink);
var preprocessed = new EcsPreprocessor(lexer, true);
var treeified = new TokensToTree(preprocessed, false);
var parser = new EcsParser(treeified.Buffered(), lexer.SourceFile, sink, null);
LNodeList results = exprMode ? LNode.List(parser.ExprStart(false)) : LNode.List(parser.ParseStmtsGreedy());
// Inject comments
var injector = new EcsTriviaInjector(preprocessed.TriviaList, preprocessed.SourceFile, (int)TokenType.Newline, "/*", "*/", "//", (mode & Mode.Expression) == 0);
results = LNode.List(injector.Run(results.GetEnumerator()).ToList());
LNode result = results.AsLNode(S.Splice);
AreEqual(TokenType.EOF, parser.LT0.Type(), string.Format("Parser stopped before EOF at [{0}] in {1}", parser.LT0.StartIndex, text));
if ((mode & Mode.IgnoreTrivia) != 0)
{
result = result.ReplaceRecursive(n => n.IsTrivia ? Maybe <LNode> .NoValue : n, LNode.ReplaceOpt.ProcessAttrs).Value;
}
if (sink is MessageHolder)
{
((MessageHolder)sink).WriteListTo(TraceMessageSink.Value);
GreaterOrEqual(((MessageHolder)sink).List.Count(m => m.Severity >= Severity.Error), 1,
"Expected an error but got none for " + text);
if (expected == null)
{
return;
}
}
if (!expected.Equals(result, LNode.CompareMode.TypeMarkers))
{
if ((mode & Mode.CompareAsLes) != 0)
{
using (LNode.SetPrinter(Syntax.Les.Les3LanguageService.Value))
AreEqual(expected.ToString(), result.ToString());
}
else
{
AreEqual(expected, result);
}
Fail("{0} has a different type marker than {1}", expected, result);
}
}
}
public IListSource <LNode> Parse(IListSource <Token> input, ISourceFile file, IMessageSink msgs, ParsingMode inputType = null)
{
// For efficiency we'd prefer to re-use our _parser object, but
// when parsing lazily, we can't re-use it because another parsing
// operation could start before this one is finished. To force
// greedy parsing, we can call ParseStmtsGreedy(), but the caller may
// prefer lazy parsing, especially if the input is large. As a
// compromise I'll check if the source file is larger than a
// certain arbitrary size. Also, ParseExprs() is always greedy
// so we can always re-use _parser in that case.
char _ = '\0';
if (file.Text.TryGet(255, ref _) || inputType == ParsingMode.FormalArguments ||
inputType == ParsingMode.Types || inputType == ParsingMode.Expressions)
{
EcsParser parser = _parser;
if (parser == null)
{
_parser = parser = new EcsParser(input, file, msgs);
}
else
{
parser.ErrorSink = msgs ?? MessageSink.Default;
parser.Reset(input, file);
}
if (inputType == ParsingMode.Expressions)
{
return(parser.ParseExprs(false, allowUnassignedVarDecl: false));
}
else if (inputType == ParsingMode.FormalArguments)
{
return(parser.ParseExprs(false, allowUnassignedVarDecl: true));
}
else if (inputType == ParsingMode.Types)
{
return(LNode.List(parser.DataType()));
}
else
{
return(parser.ParseStmtsGreedy());
}
}
else
{
var parser = new EcsParser(input, file, msgs);
return(parser.ParseStmtsLazy().Buffered());
}
}
public IListSource <LNode> Parse(IListSource <Token> input, ISourceFile file, IMessageSink msgs, Symbol inputType = null)
{
// For efficiency we'd prefer to re-use our _parser object, but
// when parsing lazily, we can't re-use it because another parsing
// operation could start before this one is finished. To force
// greedy parsing, we can call ParseStmtsGreedy(), but the caller may
// prefer lazy parsing, especially if the input is large. As a
// compromise I'll check if the source file is larger than a
// certain arbitrary size. Also, ParseExprs() is always greedy
// so we can always re-use _parser in that case.
bool exprMode = inputType == ParsingService.Exprs;
char _ = '\0';
if (inputType == ParsingService.Exprs || file.Text.TryGet(255, ref _))
{
EcsParser parser = _parser;
if (parser == null)
{
_parser = parser = new EcsParser(input, file, msgs);
}
else
{
parser.ErrorSink = msgs ?? MessageSink.Current;
parser.Reset(input, file);
}
if (inputType == ParsingService.Exprs)
{
return(parser.ParseExprs());
}
else
{
return(parser.ParseStmtsGreedy());
}
}
else
{
var parser = new EcsParser(input, file, msgs);
return(parser.ParseStmtsLazy().Buffered());
}
}
