Java Recognizer.getInputStream方法代碼示例

import org.antlr.v4.runtime.Recognizer; //導入方法依賴的package包/類
protected <T extends Token> void underlineError(
		Recognizer<T, ?> recognizer, Token offendingToken, int line,
		int charPositionInLine) {
	
	CommonTokenStream tokens = (CommonTokenStream) recognizer
			.getInputStream();
	
	String input = tokens.getTokenSource().getInputStream().toString();
	
	String[] lines = input.split("\n");
	
	String errorLine = lines[line - 1];
	
	System.out.println(errorLine);
	
	for (int i = 0; i < charPositionInLine; i++)
		System.out.print(" ");
	
	int start = offendingToken.getStartIndex();
	int stop = offendingToken.getStopIndex();
	
	if (start >= 0 && stop >= 0) {
		for (int i = start; i <= stop; i++)
			System.out.print("^");
	}
	System.out.println();
}
 

import org.antlr.v4.runtime.Recognizer; //導入方法依賴的package包/類
protected void underlineError(Recognizer<?, ?> recognizer, Token offendingToken, int line, int charPositionInLine, String msg) {
    CommonTokenStream tokens = (CommonTokenStream) recognizer.getInputStream();

    int start = offendingToken.getStartIndex() + embeddedOffset;
    int stop = offendingToken.getStopIndex() + embeddedOffset;

    SyntaxError syntaxError = new SyntaxError();
    syntaxError.message = msg;
    syntaxError.line = line;
    syntaxError.charPositionInLine = charPositionInLine;
    syntaxError.start = start;
    syntaxError.stop = stop + 1;
    syntaxErrors.add(syntaxError);
}
 

import org.antlr.v4.runtime.Recognizer; //導入方法依賴的package包/類
@Override
public void syntaxError(Recognizer<?, ?> recognizer, Object offendingSymbol, int line, int charPositionInLine,
		String msg, RecognitionException e) {
	super.syntaxError(recognizer, offendingSymbol, line, charPositionInLine, msg, e);

	this.line = line;

	if (recognizer.getInputStream() instanceof CommonTokenStream) {
		StringBuilder errorBuilder = new StringBuilder(msg);

		CommonTokenStream tokenStream = (CommonTokenStream) recognizer.getInputStream();
		errorBuilder.append("\n");

		String expression = tokenStream.getTokenSource().getInputStream().toString();
		String[] split = expression.split("(\r\n|\n)");
		String error = null;
		if (split.length > 0) {
			if (line - 1 >= 0 && line - 1 < split.length) {
				error = split[line - 1].replace("\t", " ");
			} else {
				error = split[split.length - 1].replace("\t", " ");
			}
			errorBuilder.append(error);
			errorBuilder.append("\n");
		} else {
			errorBuilder.append(expression);
			errorBuilder.append("\n");
		}

		for (int i = 0; i < charPositionInLine; i++) {
			errorBuilder.append(" ");
		}

		if (offendingSymbol instanceof Token) {
			Token token = (Token) offendingSymbol;
			int startIndex = token.getStartIndex();
			int stopIndex = token.getStopIndex();
			if (startIndex >= 0 && stopIndex >= 0 && startIndex <= stopIndex) {
				for (int i = token.getStartIndex(); i <= token.getStopIndex(); i++) {
					errorBuilder.append("^");
				}
			} else {
				errorBuilder.append("^");
			}
		} else {
			errorBuilder.append("^");
		}

		errorMessage = errorBuilder.toString();
	} else {
		errorMessage = msg;
	}
}