protected List <Token> ClassFilter(List <Token> tokens)
{
var classDefPattern = ComboPatternByFirstMatchBuilder
.Reset()
.NextPattern(new SingleTokenPattern(TokenType.CLASS_OPERATOR))
.NextPattern(new SingleTokenPattern(TokenType.IDENTIFIER))
.NextPattern(TokensBlockPattern.BracketBlock)
.Build();
var classDef = classDefPattern.GetMatch(tokens);
while (classDef.IsPartMatch)
{
var classOperatorMatch = classDef.GetMatch(0);
var classArgsMatch = classDef.GetMatch(1);
var codeBlockMatch = classDef.GetMatch(2);
if (codeBlockMatch.IsFullMatch)
{
var classBlockLex = TokenUtils.GetMatchResultBlockTokens(tokens, codeBlockMatch);
tokens.RemoveRange(classDef.Start, classDef.Length);
tokens.InsertRange(classDef.Start, classBlockLex);
classDef = classDefPattern.GetMatch(tokens, classDef.End - 4);
}
else if (classOperatorMatch.IsFullMatch && (!classArgsMatch.IsFullMatch | classArgsMatch.IsFullMatch))
{
throw new ParseRuleException(classDefPattern, tokens, classDef.Start);
}
}
return(tokens);
}
protected List <Token> FilterTryBlock(List <Token> tokens)
{
var tryPattern = ComboPatternByFirstMatchBuilder
.Reset()
.NextPattern(new SingleTokenPattern(TokenType.TRY_OPERATOR))
.NextPattern(TokensBlockPattern.BracketBlock)
.Build();
var tryMatch = tryPattern.GetMatch(tokens);
while (tryMatch.IsPartMatch)
{
var tryOpMatch = tryMatch.GetMatch(0);
var codeBlockMatch = tryMatch.GetMatch(1);
if (tryMatch.IsFullMatch)
{
var tryBlockLexes = tokens.GetRange(codeBlockMatch.Start + 1, codeBlockMatch.Length - 2);
tokens.RemoveRange(tryMatch.Start, tryMatch.Length);
tokens.InsertRange(tryMatch.Start, tryBlockLexes);
tryMatch = tryPattern.GetMatch(tokens, tryMatch.Start + codeBlockMatch.Length);
}
else if (tryOpMatch.IsFullMatch && !codeBlockMatch.IsFullMatch)
{
throw new ParseRuleException(tryPattern, tokens, tryMatch.Start);
}
}
return(tokens);
}
public CppTokenFilterChain()
{
var argsBlock = new TokensBlockWithExcludePatternBuilder()
.Reset()
.StartWith(TokenType.ARGS_OPEN)
.ExceptRange(
Enum.GetValues(typeof(TokenType))
.Cast <TokenType>()
.Where(t => t.IsOperatorToken())
.ToList())
.Except(TokenType.ACCESS_MODIFICATOR)
.EndWith(TokenType.ARGS_CLOSE)
.Build();
var gotoLabelPattern = TokenSequencePatternBuilder
.Reset()
.Then(TokenType.IDENTIFIER)
.Then(TokenType.DOUBLE_DOT)
.Build();
var gotoConstructionPattern = new StartEndTokensPattern(
TokenType.RESERVE_5,
TokenType.LINE_END);
var accessModificatorPattern = TokenSequencePatternBuilder
.Reset()
.Then(TokenType.ACCESS_MODIFICATOR)
.Then(TokenType.DOUBLE_DOT)
.Build();
var classQualifierPattern = TokenSequencePatternBuilder
.Reset()
.Then(TokenType.IDENTIFIER)
.Then(TokenType.DOUBLE_DOT)
.Then(TokenType.DOUBLE_DOT)
.Build();
var throwLinePattern = new StartEndTokensPattern(
TokenType.THROW_OPERATOR,
TokenType.LINE_END);
var emptyObjVarsPattern = TokenSequencePatternBuilder
.Reset()
.Then(TokenType.IDENTIFIER)
.Then(TokenType.IDENTIFIER)
.Then(TokenType.LINE_END)
.Build();
var varDefPattern = TokenSequencePatternBuilder
.Reset()
.Then(TokenType.IDENTIFIER)
.Then(TokenType.LINE_END)
.Build();
var castPattern = TokenSequencePatternBuilder
.Reset()
.Then(TokenType.ARGS_OPEN)
.Then(TokenType.IDENTIFIER)
.Then(TokenType.ARGS_CLOSE)
.Build();
var catchBlockPattern = StrictPatternBuilder
.Reset()
.NextPattern(new SingleTokenPattern(TokenType.CATCH_OPERATOR))
.NextPattern(argsBlock)
.NextPattern(TokensBlockPattern.BracketBlock)
.Build();
var structDefPattern = StrictPatternBuilder
.Reset()
.NextPattern(TokenSequencePatternBuilder
.Reset()
.Then(TokenType.RESERVE_1)
.Then(TokenType.IDENTIFIER)
.Build())
.NextPattern(TokensBlockPattern.BracketBlock)
.Build();
var structVarInitComboPattern = StrictPatternBuilder
.Reset()
.NextPattern(TokenSequencePatternBuilder
.Reset()
.Then(TokenType.IDENTIFIER)
.Then(TokenType.IDENTIFIER)
.Then(TokenType.EQUAL_ACTION)
.Build())
.NextPattern(TokensBlockPattern.BracketBlock)
.Build();
var tryPattern = ComboPatternByFirstMatchBuilder
.Reset()
.NextPattern(new SingleTokenPattern(TokenType.TRY_OPERATOR))
.NextPattern(TokensBlockPattern.BracketBlock)
.Build();
var classDefPattern = ComboPatternByFirstMatchBuilder
.Reset()
.NextPattern(new SingleTokenPattern(TokenType.CLASS_OPERATOR))
.NextPattern(new SingleTokenPattern(TokenType.IDENTIFIER))
.NextPattern(TokensBlockPattern.BracketBlock)
.Build();
var lineBreakFilter = new SingleTokenPattern(TokenType.NEW_LINE);
var tabFilter = new SingleTokenPattern(TokenType.TABULATION);
var carriageRetFilter = new SingleTokenPattern(TokenType.CARRIAGE_RETURN);
Filters.AddRange(new List <TokenFilter>()
{
new RemoveTokensFilter(lineBreakFilter, TokenFilter.HighestPriority),
new RemoveTokensFilter(tabFilter, TokenFilter.HighestPriority),
new RemoveTokensFilter(carriageRetFilter, TokenFilter.HighestPriority),
new RemoveTokensFilter(gotoLabelPattern, TokenFilter.PreHighestPriority),
new RemoveTokensFilter(gotoConstructionPattern, TokenFilter.PreHighestPriority),
new RemoveTokensFilter(catchBlockPattern, TokenFilter.PreHighestPriority),
new RemoveTokensFilter(structDefPattern, TokenFilter.PreHighestPriority),
new RemoveTokensFilter(structVarInitComboPattern, TokenFilter.PreHighestPriority),
new RemoveTokensFilter(accessModificatorPattern, TokenFilter.PreHighestPriority),
new RemoveTokensFilter(classQualifierPattern, TokenFilter.PreHighestPriority),
new StrictEditTokensFilter(FilterTryBlock, tryPattern),
new StrictEditTokensFilter(ClassFilter, classDefPattern),
new RemoveTokensFilter(throwLinePattern, TokenFilter.PreLowestPriority),
new RemoveTokensFilter(castPattern, TokenFilter.PreLowestPriority),
new RemoveTokensFilter(emptyObjVarsPattern, TokenFilter.LowestPriority),
new RemoveTokensFilter(varDefPattern, TokenFilter.LowestPriority)
});
}
