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