Package org.antlr.v4.runtime

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

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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.replace(0, "x");
    String result = tokens.getText();
    String expecting = "xbc";
    assertEquals(expecting, result);
  }
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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.replace(2, "x");
    String result = tokens.getText();
    String expecting = "abx";
    assertEquals(expecting, result);
  }
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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.replace(1, "x");
    String result = tokens.getText();
    String expecting = "axc";
    assertEquals(expecting, result);
  }
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    String input = "x = 3 * 0;";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(4, 8, "0");
    stream.fill();
// replace 3 * 0 with 0

    String result = tokens.getTokenStream().getText();
    String expecting = "x = 3 * 0;";
 
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    String result = tokens.getTokenStream().getText();
    String expecting = "x = 3 * 0 + 2 * 0;";
    assertEquals(expecting, result);

    tokens.replace(4, 8, "0");
    stream.fill();
// replace 3 * 0 with 0
    result = tokens.getText();
    expecting = "x = 0 + 2 * 0;";
    assertEquals(expecting, result);
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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.replace(1, "x");
    tokens.replace(1, "y");
    String result = tokens.getText();
    String expecting = "ayc";
    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(1, "x");
    tokens.replace(1, "y");
    String result = tokens.getText();
    String expecting = "ayc";
    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(0, "_");
    tokens.replace(1, "x");
    tokens.replace(1, "y");
    String result = tokens.getText();
    String expecting = "_ayc";
    assertEquals(expecting, result);
  }
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    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.insertBefore(0, "_");
    tokens.replace(1, "x");
    tokens.replace(1, "y");
    String result = tokens.getText();
    String expecting = "_ayc";
    assertEquals(expecting, result);
  }
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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.replace(1, "x");
    tokens.delete(1);
    String result = tokens.getText();
    String expecting = "ac";
    assertEquals(expecting, result);
  }
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