Examples of TreeWizard

org.antlr.runtime.tree.TreeWizard
Build and navigate trees with this object. Must know about the names of tokens so you have to pass in a map or array of token names (from which this class can build the map). I.e., Token DECL means nothing unless the class can translate it to a token type. In order to create nodes and navigate, this class needs a TreeAdaptor. This class can build a token type -> node index for repeated use or for iterating over the various nodes with a particular type. This class works in conjunction with the TreeAdaptor rather than moving all this functionality into the adaptor. An adaptor helps build and navigate trees using methods. This class helps you do it with string patterns like "(A B C)". You can create a tree from that pattern or match subtrees against it.

Examples of org.antlr.runtime.tree.TreeWizard

    boolean valid = wiz.parse(t, "(nil A B C)");
    assertTrue(valid);
  }


  @Test public void testWildcard() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C)");
    boolean valid = wiz.parse(t, "(A . .)");
    assertTrue(valid);
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    boolean valid = wiz.parse(t, "(A . .)");
    assertTrue(valid);
  }


  @Test public void testParseWithText() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B[foo] C[bar])");
    // C pattern has no text arg so despite [bar] in t, no need
    // to match text--check structure only.
    boolean valid = wiz.parse(t, "(A B[foo] C)");
    assertTrue(valid);
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    boolean valid = wiz.parse(t, "(A B[foo] C)");
    assertTrue(valid);
  }


  @Test public void testParseWithText2() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B[T__32] (C (D E[a])))");
    // C pattern has no text arg so despite [bar] in t, no need
    // to match text--check structure only.
    boolean valid = wiz.parse(t, "(A B[foo] C)");
    assertEquals("(A T__32 (C (D a)))", t.toStringTree());
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    boolean valid = wiz.parse(t, "(A B[foo] C)");
    assertEquals("(A T__32 (C (D a)))", t.toStringTree());
  }


  @Test public void testParseWithTextFails() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C)");
    boolean valid = wiz.parse(t, "(A[foo] B C)");
    assertTrue(!valid); // fails
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    boolean valid = wiz.parse(t, "(A[foo] B C)");
    assertTrue(!valid); // fails
  }


  @Test public void testParseLabels() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C)");
    Map<String, Object> labels = new HashMap<String, Object>();
    boolean valid = wiz.parse(t, "(%a:A %b:B %c:C)", labels);
    assertTrue(valid);
    assertEquals("A", labels.get("a").toString());
    assertEquals("B", labels.get("b").toString());
    assertEquals("C", labels.get("c").toString());
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    assertEquals("B", labels.get("b").toString());
    assertEquals("C", labels.get("c").toString());
  }


  @Test public void testParseWithWildcardLabels() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C)");
    Map<String, Object> labels = new HashMap<String, Object>();
    boolean valid = wiz.parse(t, "(A %b:. %c:.)", labels);
    assertTrue(valid);
    assertEquals("B", labels.get("b").toString());
    assertEquals("C", labels.get("c").toString());
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    assertEquals("B", labels.get("b").toString());
    assertEquals("C", labels.get("c").toString());
  }


  @Test public void testParseLabelsAndTestText() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B[foo] C)");
    Map<String, Object> labels = new HashMap<String, Object>();
    boolean valid = wiz.parse(t, "(%a:A %b:B[foo] %c:C)", labels);
    assertTrue(valid);
    assertEquals("A", labels.get("a").toString());
    assertEquals("foo", labels.get("b").toString());
    assertEquals("C", labels.get("c").toString());
  }

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Examples of org.antlr.runtime.tree.TreeWizard

  protected static final String[] tokens =
    new String[] {"", "", "", "", "", "A", "B", "C", "D", "E", "ID", "VAR"};
  protected static final TreeAdaptor adaptor = new CommonTreeAdaptor();


  @Test public void testSingleNode() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("ID");
    String found = t.toStringTree();
    String expecting = "ID";
    assertEquals(expecting, found);
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    String expecting = "ID";
    assertEquals(expecting, found);
  }


  @Test public void testSingleNodeWithArg() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("ID[foo]");
    String found = t.toStringTree();
    String expecting = "foo";
    assertEquals(expecting, found);
  }

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Examples of org.antlr.runtime.tree.TreeWizard

    String expecting = "foo";
    assertEquals(expecting, found);
  }


  @Test public void testSingleNodeTree() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A)");
    String found = t.toStringTree();
    String expecting = "A";
    assertEquals(expecting, found);
  }

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