Example usage for org.antlr.v4.runtime TokenSource getInputStream

Introduction

In this page you can find the example usage for org.antlr.v4.runtime TokenSource getInputStream.

Prototype

public CharStream getInputStream();

Source Link

Document

Get the CharStream from which this token source is currently providing tokens.

Usage

From source file:boa.compiler.listeners.BoaErrorListener.java

License:Apache License

private void underlineError(final TokenSource tokens, final Token offendingToken, final int line,
        final int charPositionInLine, final int length) {
    final String input = tokens.getInputStream().toString() + "\n ";
    final String[] lines = input.split("\n");
    final String errorLine = lines[line - 1];
    System.err.println(errorLine.replaceAll("\t", "    "));

    int stop = Math.min(charPositionInLine, errorLine.length());
    for (int i = 0; i < stop; i++)
        if (errorLine.charAt(i) == '\t')
            System.err.print("    ");
        else//from  ww  w .  j  av  a2s .c om
            System.err.print(" ");

    int stop2 = Math.min(stop + length, errorLine.length());
    for (int i = stop; i < stop2; i++)
        if (errorLine.charAt(i) == '\t')
            System.err.print("^^^^");
        else
            System.err.print("^");

    System.err.println();
}

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From source file:edu.iastate.cs.boa.ui.errors.FetchCompilerError.java

License:Apache License

private void underlineError(final TokenSource tokens, final Token offendingToken, final int line,
        final int charPositionInLine, final int length) {
    final String input = tokens.getInputStream().toString() + "\n ";
    final String[] lines = input.split("\n");
    final String errorLine = lines[line - 1];
    System.err.println(errorLine.replaceAll("\t", "    "));

    int stop = Math.min(charPositionInLine, errorLine.length());
    for (int i = 0; i < stop; i++)
        if (errorLine.charAt(i) == '\t')
            System.err.print("    ");
        else/*w w  w.  j  ava  2 s  . c o  m*/
            System.err.print(" ");

    int stop2 = Math.min(stop + length, errorLine.length());
    for (int i = stop; i < stop2; i++)
        if (errorLine.charAt(i) == '\t')
            System.err.print("^^^^");
        else
            System.err.print("^");
    System.err.println();
}

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