sigmasternchen/xtext-core
1
0
Fork 0
mirror of https://github.com/sigmasternchen/xtext-core synced 2025-03-15 16:28:56 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[GrammarUtil/perf] make containing*() fast for misses

Browse source 
containingAssignment() and containingCrossReference() should return
null as fast as possible when there is no Assignemnt/CrossReference

Signed-off-by: Moritz Eysholdt <moritz.eysholdt@typefox.io>
This commit is contained in:
Moritz Eysholdt 2016-10-14 09:07:32 +02:00 committed by Moritz Eysholdt
parent d7f9373b95
commit 66b8ace522
1 changed files with 37 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
org.eclipse.xtext/src/org/eclipse/xtext/GrammarUtil.java
View file

@ -120,7 +120,26 @@ public class GrammarUtil {
}
public static Assignment containingAssignment(EObject e) {
return getContainerOfType(e, Assignment.class);
EObject current = e;
while (current != null) {
switch (current.eClass().getClassifierID()) {
case XtextPackage.ASSIGNMENT:
return (Assignment) current;
case XtextPackage.GROUP:
case XtextPackage.UNORDERED_GROUP:
case XtextPackage.PARSER_RULE:
case XtextPackage.TERMINAL_RULE:
case XtextPackage.ENUM_RULE:
return null;
case XtextPackage.ALTERNATIVES:
if (((Alternatives) current).getCardinality() != null) {
return null;
}
default:
current = current.eContainer();
}
}
return null;
}
public static Group containingGroup(EObject e) {
@ -132,7 +151,23 @@ public class GrammarUtil {
}
public static CrossReference containingCrossReference(EObject e) {
return getContainerOfType(e, CrossReference.class);
EObject current = e;
while (current != null) {
switch (current.eClass().getClassifierID()) {
case XtextPackage.CROSS_REFERENCE:
return (CrossReference) current;
case XtextPackage.GROUP:
case XtextPackage.UNORDERED_GROUP:
case XtextPackage.ALTERNATIVES:
case XtextPackage.PARSER_RULE:
case XtextPackage.TERMINAL_RULE:
case XtextPackage.ENUM_RULE:
return null;
default:
current = current.eContainer();
}
}
return null;
}
public static List<Action> containedActions(EObject e) {