protected void exitRule(ParseTreeListener listener, RuleNode r) {
ParserRuleContext ctx = (ParserRuleContext) r.getRuleContext();
ctx.exitRule(listener);
listener.exitEveryRule(ctx);
GlobalInfo info = GlobalInfo.getInstance();
info.exitRuleSetup();
}
public static Interval getSourceInterval(@NonNull ParseTree context) {
Parameters.notNull("context", context);
if (context instanceof TerminalNode) {
TerminalNode terminalNode = (TerminalNode) context;
Token token = terminalNode.getSymbol();
return new Interval(token.getStartIndex(), token.getStopIndex());
} else if (context instanceof RuleNode) {
RuleNode ruleNode = (RuleNode) context;
RuleContext ruleContext = ruleNode.getRuleContext();
if (ruleContext instanceof ParserRuleContext) {
return getSourceInterval((ParserRuleContext) ruleContext);
} else {
Token startSymbol = getStartSymbol(context);
Token stopSymbol = getStopSymbol(context);
if (startSymbol == null || stopSymbol == null) {
return Interval.INVALID;
}
return new Interval(startSymbol.getStartIndex(), stopSymbol.getStopIndex());
}
} else {
return Interval.INVALID;
}
}
@CheckForNull
public static RuleNode findAncestor(@NonNull ParseTree tree, int ruleIndex) {
for (ParseTree current = tree; current != null; current = current.getParent()) {
if (!(current instanceof RuleNode)) {
continue;
}
RuleNode ruleNode = (RuleNode) current;
if (ruleNode.getRuleContext().getRuleIndex() == ruleIndex) {
return ruleNode;
}
}
return null;
}
@CheckForNull
public static <ContextClass> ContextClass findAncestor(
@NonNull ParseTree tree, @NonNull Class<ContextClass> nodeType) {
for (ParseTree current = tree; current != null; current = current.getParent()) {
if (!(current instanceof RuleNode)) {
continue;
}
RuleNode ruleNode = (RuleNode) current;
RuleContext ruleContext = ruleNode.getRuleContext();
if (nodeType.isInstance(ruleContext)) {
return nodeType.cast(ruleContext);
}
}
return null;
}
