Package org.antlr.runtime

Examples of org.antlr.runtime.TokenRewriteStream.LT()

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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.insertBefore(0, "x");
    tokens.insertBefore(0, "y");
    tokens.replace(0, "z");
    String result = tokens.toString();
    String expecting = "yxzbc";
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(2, "x");
    tokens.insertBefore(2, "y");
    String result = tokens.toString();
    String expecting = "abyx";
    assertEquals(result, expecting);
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.insertBefore(2, "y");
    tokens.replace(2, "x");
    String result = tokens.toString();
    String expecting = "abyx";
    assertEquals(result, expecting);
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(2, "x");
    tokens.insertAfter(2, "y");
    String result = tokens.toString();
    String expecting = "abxy";
    assertEquals(result, expecting);
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(2, 4, "x");
    tokens.insertBefore(3, "y"); // no effect; can't insert in middle of replaced region
    String result = tokens.toString();
    String expecting = "abxba";
    assertEquals(result, expecting);
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(2, 4, "x");
    tokens.insertBefore(2, "y");
    String result = tokens.toString();
    String expecting = "abyxba";
    assertEquals(result, expecting);
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(2, 4, "x");
    tokens.insertBefore(4, "y"); // no effect; within range of a replace
    String result = tokens.toString();
    String expecting = "abxba";
    assertEquals(result, expecting);
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(2, 4, "x");
    tokens.insertAfter(4, "y");
    String result = tokens.toString();
    String expecting = "abxyba";
    assertEquals(result, expecting);
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(0, 6, "x");
    String result = tokens.toString();
    String expecting = "x";
    assertEquals(result, expecting);
  }
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      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(2, 4, "xyz");
    String result = tokens.toString(0,6);
    String expecting = "abxyzba";
    assertEquals(result, expecting);
  }
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