Package org.antlr.v4.runtime

Examples of org.antlr.v4.runtime.TokenStreamRewriter$ReplaceOp

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                       "C : 'c';\n");
    String input = "abcccba";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(2, 4, "xyz");
    tokens.replace(1, 3, "foo");
    stream.fill();
// overlap, error
    Exception exc = null;
    try {
      tokens.getText();
    }
    catch (IllegalArgumentException iae) {
      exc = iae;
    }
    String expecting = "replace op boundaries of <ReplaceOp@[@1,1:1='b',<2>,1:1]..[@3,3:3='c',<3>,1:3]:\"foo\"> overlap with previous <ReplaceOp@[@2,2:2='c',<3>,1:2]..[@4,4:4='c',<3>,1:4]:\"xyz\">";
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                       "C : 'c';\n");
    String input = "abcba";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(2, 2, "xyz");
    tokens.replace(0, 3, "foo");
    String result = tokens.getText();
    String expecting = "fooa";
    assertEquals(expecting, result);
  }
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                       "C : 'c';\n");
    String input = "abc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.insertBefore(0, "x");
    tokens.insertBefore(0, "y");
    String result = tokens.getText();
    String expecting = "yxabc";
    assertEquals(expecting, result);
  }
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                       "C : 'c';\n");
    String input = "abc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.insertBefore(1, "x");
    tokens.insertBefore(0, "y");
    tokens.insertBefore(1, "z");
    String result = tokens.getText();
    String expecting = "yazxbc";
    assertEquals(expecting, result);
  }
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                       "C : 'c';\n");
    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, 2, "foo");
    tokens.insertBefore(0, "z");
    stream.fill();
// combine with left edge of rewrite
    String result = tokens.getText();
    String expecting = "zfoo";
    assertEquals(expecting, result);
  }
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                       "C : 'c';\n");
    String input = "abc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.delete(0, 2);
    tokens.insertBefore(0, "z");
    stream.fill();
// combine with left edge of rewrite
    String result = tokens.getText();
    String expecting = "z";
    stream.fill();
// make sure combo is not znull
    assertEquals(expecting, result);
  }
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                       "C : 'c';\n");
    String input = "abc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.insertBefore(1, "x");
    tokens.insertBefore(2, "y");
    tokens.insertBefore(0, "z");
    String result = tokens.getText();
    String expecting = "zaxbyc";
    assertEquals(expecting, result);
  }
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                       "C : 'c';\n");
    String input = "abcc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(1, 2, "foo");
    tokens.replace(0, 3, "bar");
    stream.fill();
// wipes prior nested replace
    String result = tokens.getText();
    String expecting = "bar";
    assertEquals(expecting, result);
  }
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                       "C : 'c';\n");
    String input = "abcc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(0, 3, "bar");
    tokens.replace(1, 2, "foo");
    stream.fill();
// cannot split earlier replace
    Exception exc = null;
    try {
      tokens.getText();
    }
    catch (IllegalArgumentException iae) {
      exc = iae;
    }
    String expecting = "replace op boundaries of <ReplaceOp@[@1,1:1='b',<2>,1:1]..[@2,2:2='c',<3>,1:2]:\"foo\"> overlap with previous <ReplaceOp@[@0,0:0='a',<1>,1:0]..[@3,3:3='c',<3>,1:3]:\"bar\">";
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                       "C : 'c';\n");
    String input = "abcc";
    LexerInterpreter lexEngine = g.createLexerInterpreter(new ANTLRInputStream(input));
    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(1, 2, "foo");
    tokens.replace(0, 2, "bar");
    stream.fill();
// wipes prior nested replace
    String result = tokens.getText();
    String expecting = "barc";
    assertEquals(expecting, result);
  }
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Related Classes of org.antlr.v4.runtime.TokenStreamRewriter$ReplaceOp

  • org.antlr.runtime.ANTLRFileStream
  • org.antlr.runtime.ANTLRStringStream
  • org.antlr.runtime.CharStream
  • org.antlr.runtime.CommonToken
  • org.antlr.runtime.tree.CommonTree
  • org.antlr.runtime.tree.CommonTreeNodeStream
  • org.antlr.runtime.tree.Tree
  • org.antlr.runtime.tree.TreeVisitor
  • org.antlr.runtime.tree.TreeVisitorAction
  • org.antlr.v4.analysis.LeftRecursionDetector
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