Examples of org.antlr.v4.runtime.CommonTokenStream.fill()

Class org.antlr.v4.runtime.CommonTokenStream

Examples of org.antlr.v4.runtime.CommonTokenStream.fill()

org.antlr.v4.runtime.CommonTokenStream.fill()
Add {@code n} characters to the buffer. Returns the number of charactersactually added to the buffer. If the return value is less than {@code n}, then EOF was reached before {@code n} characters could be added.

                       "B : 'b';\n" +
                       "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(1, "y");
    String result = tokens.getText();
    String expecting = "ayxbc";

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                       "B : 'b';\n" +
                       "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");
    tokens.replace(0, "z");
    String result = tokens.getText();

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                       "B : 'b';\n" +
                       "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(2, "x");
    tokens.insertBefore(2, "y");
    String result = tokens.getText();
    String expecting = "abyx";

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                       "B : 'b';\n" +
                       "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(2, "y");
    tokens.replace(2, "x");
    String result = tokens.getText();
    String expecting = "abyx";

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                       "B : 'b';\n" +
                       "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(2, "x");
    tokens.insertAfter(2, "y");
    String result = tokens.getText();
    String expecting = "abxy";

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                       "B : 'b';\n" +
                       "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, "x");
    tokens.insertBefore(2, "y");
    String result = tokens.getText();
    String expecting = "abyxba";

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                       "B : 'b';\n" +
                       "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, "x");
    tokens.insertBefore(4, "y");
    stream.fill(); // no effect; within range of a replace
    Exception exc = null;

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    CommonTokenStream stream = new CommonTokenStream(lexEngine);
    stream.fill();
    TokenStreamRewriter tokens = new TokenStreamRewriter(stream);
    tokens.replace(2, 4, "x");
    tokens.insertBefore(4, "y");
    stream.fill(); // no effect; within range of a replace
    Exception exc = null;
    try {
      tokens.getText();
    }
    catch (IllegalArgumentException iae) {

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                       "B : 'b';\n" +
                       "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, "x");
    tokens.insertAfter(4, "y");
    String result = tokens.getText();
    String expecting = "abxyba";

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                       "B : 'b';\n" +
                       "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(0, 6, "x");
    String result = tokens.getText();
    String expecting = "x";
    assertEquals(expecting, result);

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