Package org.antlr.runtime

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

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    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, "x");
    tokens.insertBefore(2, "y");
    String result = tokens.toString();
    String expecting = "abyx";
    assertEquals(expecting, result);
  }
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      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.insertBefore(2, "y");
    tokens.replace(2, "x");
    String result = tokens.toString();
    String expecting = "abyx";
    assertEquals(expecting, result);
  }
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    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, 4, "x");
    tokens.insertBefore(2, "y");
    String result = tokens.toString();
    String expecting = "abyxba";
    assertEquals(expecting, result);
  }
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    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, 4, "x");
    tokens.insertBefore(4, "y"); // no effect; within range of a replace
    Exception exc = null;
    try {
      tokens.toString();
    }
    catch (IllegalArgumentException iae) {
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      "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, "0");
    String result = tokens.toString();
    String expecting = "0abc";
    assertEquals(expecting, result);
  }
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      "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(1, "x");
    tokens.insertAfter(1, "x");
    String result = tokens.toString();
    String expecting = "axbxc";
    assertEquals(expecting, result);
  }
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      "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, "_");
        tokens.replace(1, "x");
    tokens.replace(1, "y");
    String result = tokens.toString();
    String expecting = "_ayc";
    assertEquals(expecting, result);
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    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.LT(1); // fill buffer
    tokens.replace(0, 2, "x");
    tokens.insertBefore(1, "0");
    Exception exc = null;
    try {
      tokens.toString();
    }
    catch (IllegalArgumentException iae) {
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      "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, "0");
    tokens.replace(0, "x"); // supercedes insert at 0
    String result = tokens.toString();
    String expecting = "xbc";
    assertEquals(expecting, result);
  }
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      "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(1, "x");
    tokens.insertBefore(1, "y");
    String result = tokens.toString();
    String expecting = "ayxbc";
    assertEquals(expecting, result);
  }
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