Package org.antlr.tool

Examples of org.antlr.tool.Grammar

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    String expecting = "x";
    assertEquals(expecting, result);
  }

  @Test public void testReplaceSubsetThenFetch() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
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    String expecting = "abxyzba";
    assertEquals(expecting, result);
  }

  @Test public void testReplaceThenReplaceSuperset() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
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    assertNotNull(exc);
    assertEquals(expecting, exc.getMessage());
  }

  @Test public void testReplaceThenReplaceLowerIndexedSuperset() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
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    assertNotNull(exc);
    assertEquals(expecting, exc.getMessage());
  }

  @Test public void testReplaceSingleMiddleThenOverlappingSuperset() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcba");
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  }

  // June 2, 2008 I rewrote core of rewrite engine; just adding lots more tests here

  @Test public void testCombineInserts() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
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    String expecting = "yxabc";
    assertEquals(expecting, result);
  }

  @Test public void testCombine3Inserts() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
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    String expecting = "yazxbc";
    assertEquals(expecting, result);
  }

  @Test public void testCombineInsertOnLeftWithReplace() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
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    String expecting = "zfoo";
    assertEquals(expecting, result);
  }

  @Test public void testCombineInsertOnLeftWithDelete() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
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    String expecting = "z"; // make sure combo is not znull
    assertEquals(expecting, result);
  }

  @Test public void testDisjointInserts() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
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    String expecting = "zaxbyc";
    assertEquals(expecting, result);
  }

  @Test public void testOverlappingReplace() throws Exception {
    Grammar g = new Grammar(
      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcc");
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Related Classes of org.antlr.tool.Grammar

  • antlr.TokenStreamRewriteEngine
  • antlr.TokenWithIndex
  • org.antlr.analysis.DecisionProbe
  • org.antlr.analysis.DFA
  • org.antlr.analysis.LL1DFA
  • org.antlr.analysis.LookaheadSet
  • org.antlr.analysis.NFA
  • org.antlr.analysis.NFAConversionThread
  • org.antlr.analysis.NFAState
  • org.antlr.analysis.Transition
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