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91 lines
2.6 KiB
91 lines
2.6 KiB
5 years ago
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package com.fr.third.antlr;
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/* ANTLR Translator Generator
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* Project led by Terence Parr at http://www.cs.usfca.edu
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* Software rights: http://www.antlr.org/license.html
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*
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* $Id: //depot/code/org.antlr/release/antlr-2.7.7/antlr/TreeWalkerGrammar.java#2 $
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*/
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import java.io.IOException;
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/** Parser-specific grammar subclass */
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class TreeWalkerGrammar extends Grammar {
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// true for transform mode
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protected boolean transform = false;
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TreeWalkerGrammar(String className_, Tool tool_, String superClass) {
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super(className_, tool_, superClass);
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}
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/** Top-level call to generate the code for this grammar */
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public void generate() throws IOException {
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generator.gen(this);
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}
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// Get name of class from which generated parser/lexer inherits
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protected String getSuperClass() {
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return "TreeParser";
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}
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/**Process command line arguments.
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* -trace have all rules call traceIn/traceOut
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* -traceParser have parser rules call traceIn/traceOut
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* -debug generate debugging output for parser debugger
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*/
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public void processArguments(String[] args) {
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for (int i = 0; i < args.length; i++) {
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if (args[i].equals("-trace")) {
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traceRules = true;
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antlrTool.setArgOK(i);
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}
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else if (args[i].equals("-traceTreeParser")) {
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traceRules = true;
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antlrTool.setArgOK(i);
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}
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// else if ( args[i].equals("-debug") ) {
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// debuggingOutput = true;
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// superClass = "parseview.DebuggingTreeWalker";
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// Tool.setArgOK(i);
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// }
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}
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}
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/** Set tree parser options */
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public boolean setOption(String key, Token value) {
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if (key.equals("buildAST")) {
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if (value.getText().equals("true")) {
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buildAST = true;
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}
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else if (value.getText().equals("false")) {
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buildAST = false;
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}
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else {
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antlrTool.error("buildAST option must be true or false", getFilename(), value.getLine(), value.getColumn());
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}
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return true;
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}
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if (key.equals("ASTLabelType")) {
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super.setOption(key, value);
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return true;
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}
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if (key.equals("className")) {
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super.setOption(key, value);
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return true;
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}
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if (super.setOption(key, value)) {
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return true;
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}
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antlrTool.error("Invalid option: " + key, getFilename(), value.getLine(), value.getColumn());
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return false;
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}
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}
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