Java Token.descPosition方法代码示例

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Removes all commentaries from some JavaScript code.
 *
 * @param text a source
 * @return comments-free JavaScript code
 */
public static String removeComments(String text) {
    StringBuilder sb = new StringBuilder();
    int i = 0;
    for (Long t : getCommentsTokens(text)) {
        int offset = Token.descPosition(t);
        int lenght = Token.descLength(t);
        sb.append(text.substring(i, offset));
        for (int j = 0; j < lenght; j++) {
            sb.append(" ");//NOI18N
        }
        i = offset + lenght;
    }
    sb.append(text.substring(i));
    return sb.toString();
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Format an error message to include source and line information.
 * @param message Error message string.
 * @param source  Source file information.
 * @param line    Source line number.
 * @param column  Source column number.
 * @param token   Offending token descriptor.
 * @return formatted string
 */
public static String format(final String message, final Source source, final int line, final int column, final long token) {
    final String        eoln     = System.lineSeparator();
    final int           position = Token.descPosition(token);
    final StringBuilder sb       = new StringBuilder();

    // Source description and message.
    sb.append(source.getName()).
        append(':').
        append(line).
        append(':').
        append(column).
        append(' ').
        append(message).
        append(eoln);

    // Source content.
    final String sourceLine = source.getSourceLine(position);
    sb.append(sourceLine).append(eoln);

    // Pointer to column.
    for (int i = 0; i < column; i++) {
        if (sourceLine.charAt(i) == '\t') {
            sb.append('\t');
        } else {
            sb.append(' ');
        }
    }

    sb.append('^');
    // Use will append eoln.
    // buffer.append(eoln);

    return sb.toString();
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
private static long tokenFor(final FunctionNode fn) {
    final int  position  = Token.descPosition(fn.getFirstToken());
    final long lastToken = Token.withDelimiter(fn.getLastToken());
    // EOL uses length field to store the line number
    final int  length    = Token.descPosition(lastToken) - position + (Token.descType(lastToken) == TokenType.EOL ? 0 : Token.descLength(lastToken));

    return Token.toDesc(TokenType.FUNCTION, position, length);
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
FunctionNode reparse() {
    if (isSerialized()) {
        return deserialize();
    }

    final int descPosition = Token.descPosition(token);
    final Context context = Context.getContextTrusted();
    final Parser parser = new Parser(
        context.getEnv(),
        source,
        new Context.ThrowErrorManager(),
        isStrict(),
        // source starts at line 0, so even though lineNumber is the correct declaration line, back off
        // one to make it exclusive
        lineNumber - 1,
        context.getLogger(Parser.class));

    if (getFunctionFlag(FunctionNode.IS_ANONYMOUS)) {
        parser.setFunctionName(functionName);
    }
    parser.setReparsedFunction(this);

    final FunctionNode program = parser.parse(CompilerConstants.PROGRAM.symbolName(), descPosition,
            Token.descLength(token), true);
    // Parser generates a program AST even if we're recompiling a single function, so when we are only
    // recompiling a single function, extract it from the program.
    return (isProgram() ? program : extractFunctionFromScript(program)).setName(null, functionName);
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Format an error message to include source and line information.
 * @param message Error message string.
 * @param source  Source file information.
 * @param line    Source line number.
 * @param column  Source column number.
 * @param token   Offending token descriptor.
 * @return formatted string
 */
public static String format(final String message, final Source source, final int line, final int column, final long token) {
    final String        eoln     = System.lineSeparator();
    final int           position = Token.descPosition(token);
    final StringBuilder sb       = new StringBuilder();

    // Source description and message.
    sb.append(source.getName()).
        append(':').
        append(line).
        append(':').
        append(column).
        append(' ').
        append(message).
        append(eoln);

    // Source content.
    final String sourceLine = source.getSourceLine(position);
    sb.append(sourceLine).append(eoln);

    // Pointer to column.
    for (int i = 0; i < column; i++) {
        if (i < sourceLine.length() && sourceLine.charAt(i) == '\t') {
            sb.append('\t');
        } else {
            sb.append(' ');
        }
    }

    sb.append('^');
    // Use will append eoln.
    // buffer.append(eoln);

    return sb.toString();
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Fetch a portion of source content associated with a token.
 * @param token Token descriptor.
 * @return Source content portion.
 */
public String getString(final long token) {
    final int start = Token.descPosition(token);
    final int len = Token.descLength(token);
    return new String(data(), start, len);
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Fetch a portion of source content associated with a token.
 * @param token Token descriptor.
 * @return Source content portion.
 */
public String getString(final long token) {
    final int start = Token.descPosition(token);
    final int len = Token.descLength(token);
    return new String(content, start, len);
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
private static long tokenFor(final FunctionNode fn) {
    final int  position   = Token.descPosition(fn.getFirstToken());
    final int  length     = Token.descPosition(fn.getLastToken()) - position + Token.descLength(fn.getLastToken());

    return Token.toDesc(TokenType.FUNCTION, position, length);
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Get token position within source where the error originated.
 * @return token position if available, else -1
 */
public int getPosition() {
    return Token.descPosition(token);
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Constructor
 *
 * @param token  token
 * @param finish finish
 */
public Node(final long token, final int finish) {
    this.token  = token;
    this.start  = Token.descPosition(token);
    this.finish = finish;
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Return token position from a token descriptor.
 *
 * @return Start position of the token in the source.
 */
public int position() {
    return Token.descPosition(token);
}
 

import jdk.nashorn.internal.parser.Token; //导入方法依赖的package包/类
/**
 * Get the unique ID for this function within the script file.
 * @return the id
 */
public int getId() {
    return isProgram() ? -1: Token.descPosition(firstToken);
}