Package org.antlr.v4.runtime

Examples of org.antlr.v4.runtime.TokenStreamRewriter.insertAfter()

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    String input = "abc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.insertAfter(2, "x");
    String result = tokens.getText();
    String expecting = "abcx";
    assertEquals(expecting, result);
  }
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    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.insertBefore(1, "x");
    tokens.insertAfter(1, "x");
    String result = tokens.getText();
    String expecting = "axbxc";
    assertEquals(expecting, result);
  }
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    result = tokens.getText(Interval.of(12, 16));
    expecting = "2 * 0";
    assertEquals(expecting, result);

    tokens.insertAfter(17, "// comment");
    result = tokens.getText(Interval.of(12, 18));
    expecting = "2 * 0;// comment";
    assertEquals(expecting, result);

    result = tokens.getText(Interval.of(0, 8));
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    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(2, "x");
    tokens.insertAfter(2, "y");
    String result = tokens.getText();
    String expecting = "abxy";
    assertEquals(expecting, result);
  }
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    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(2, 4, "x");
    tokens.insertAfter(4, "y");
    String result = tokens.getText();
    String expecting = "abxyba";
    assertEquals(expecting, result);
  }
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