Examples of org.antlr.tool.Interpreter

org.antlr.tool.Interpreter
The recognition interpreter/engine for grammars. Separated out of Grammar as it's related, but technically not a Grammar function. You create an interpreter for a grammar and an input stream. This object can act as a TokenSource so that you can hook up two grammars (via a CommonTokenStream) to lex/parse. Being a token source only makes sense for a lexer grammar of course.

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    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;

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, 4, "x");
    tokens.insertAfter(4, "y");
    String result = tokens.toString();

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(0, 6, "x");
    String result = tokens.toString();
    String expecting = "x";

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, 4, "xyz");
    String result = tokens.toString(0,6);
    String expecting = "abxyzba";

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, 4, "xyz");
    tokens.replace(3, 5, "foo"); // overlaps, error
    Exception exc = null;

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcccba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, 4, "xyz");
    tokens.replace(1, 3, "foo"); // overlap, error
    Exception exc = null;

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abcba");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(2, 2, "xyz");
    tokens.replace(0, 3, "foo");
    String result = tokens.toString();

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.insertBefore(0, "x");
    tokens.insertBefore(0, "y");
    String result = tokens.toString();

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.insertBefore(1, "x");
    tokens.insertBefore(0, "y");
    tokens.insertBefore(1, "z");

View Full Code Here

      "lexer grammar t;\n"+
      "A : 'a';\n" +
      "B : 'b';\n" +
      "C : 'c';\n");
    CharStream input = new ANTLRStringStream("abc");
    Interpreter lexEngine = new Interpreter(g, input);
    TokenRewriteStream tokens = new TokenRewriteStream(lexEngine);
    tokens.fill();
    tokens.replace(0, 2, "foo");
    tokens.insertBefore(0, "z"); // combine with left edge of rewrite
    String result = tokens.toString();

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.antlr.tool.Interpreter

org.antlr.analysis.DFA

org.antlr.runtime.debug.ParseTreeBuilder

org.antlr.test.TestCommonTokenStream

org.antlr.test.TestInterpretedLexing

org.antlr.test.TestInterpretedParsing

org.antlr.test.TestTokenRewriteStream

org.antlr.works.interpreter.InterpreterTab

java.util.Stack

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.