antlr.RuleSymbol Maven / Gradle / Ivy
package antlr;
/* ANTLR Translator Generator
* Project led by Terence Parr at http://www.cs.usfca.edu
* Software rights: http://www.antlr.org/license.html
*
* $Id: //depot/code/org.antlr/release/antlr-2.7.7/antlr/RuleSymbol.java#2 $
*/
import antlr.collections.impl.Vector;
class RuleSymbol extends GrammarSymbol {
RuleBlock block; // list of alternatives
boolean defined; // has the rule been defined yet?
Vector references; // list of all nodes referencing this rule
// not strictly needed by generic symbol table
// but we will almost always analyze/gen code
String access; // access specifier for this rule
String comment; // A javadoc comment if any.
public RuleSymbol(String r) {
super(r);
references = new Vector();
}
public void addReference(RuleRefElement e) {
references.appendElement(e);
}
public RuleBlock getBlock() {
return block;
}
public RuleRefElement getReference(int i) {
return (RuleRefElement)references.elementAt(i);
}
public boolean isDefined() {
return defined;
}
public int numReferences() {
return references.size();
}
public void setBlock(RuleBlock rb) {
block = rb;
}
public void setDefined() {
defined = true;
}
}