public static boolean isMainOrPremainMethod(@NotNull PsiMethod method) {
if (!PsiType.VOID.equals(method.getReturnType())) return false;
String name = method.getName();
if (!("main".equals(name) || "premain".equals(name))) return false;
PsiElementFactory factory = JavaPsiFacade.getInstance(method.getProject()).getElementFactory();
MethodSignature signature = method.getSignature(PsiSubstitutor.EMPTY);
try {
MethodSignature main = createSignatureFromText(factory, "void main(String[] args);");
if (MethodSignatureUtil.areSignaturesEqual(signature, main)) return true;
MethodSignature premain =
createSignatureFromText(
factory, "void premain(String args, java.lang.instrument.Instrumentation i);");
if (MethodSignatureUtil.areSignaturesEqual(signature, premain)) return true;
} catch (IncorrectOperationException e) {
LOG.error(e);
}
return false;
}
private static void setupPatternMethods(
PsiManager manager,
GlobalSearchScope searchScope,
List<PsiMethod> patternMethods,
IntArrayList indices) {
final PsiClass collectionClass =
JavaPsiFacade.getInstance(manager.getProject())
.findClass("java.util.Collection", searchScope);
PsiType[] javaLangObject = {PsiType.getJavaLangObject(manager, searchScope)};
MethodSignature removeSignature =
MethodSignatureUtil.createMethodSignature(
"remove", javaLangObject, PsiTypeParameter.EMPTY_ARRAY, PsiSubstitutor.EMPTY);
if (collectionClass != null) {
PsiMethod remove =
MethodSignatureUtil.findMethodBySignature(collectionClass, removeSignature, false);
addMethod(remove, 0, patternMethods, indices);
MethodSignature containsSignature =
MethodSignatureUtil.createMethodSignature(
"contains", javaLangObject, PsiTypeParameter.EMPTY_ARRAY, PsiSubstitutor.EMPTY);
PsiMethod contains =
MethodSignatureUtil.findMethodBySignature(collectionClass, containsSignature, false);
addMethod(contains, 0, patternMethods, indices);
}
final PsiClass listClass =
JavaPsiFacade.getInstance(manager.getProject()).findClass("java.util.List", searchScope);
if (listClass != null) {
MethodSignature indexofSignature =
MethodSignatureUtil.createMethodSignature(
"indexOf", javaLangObject, PsiTypeParameter.EMPTY_ARRAY, PsiSubstitutor.EMPTY);
PsiMethod indexof =
MethodSignatureUtil.findMethodBySignature(listClass, indexofSignature, false);
addMethod(indexof, 0, patternMethods, indices);
MethodSignature lastindexofSignature =
MethodSignatureUtil.createMethodSignature(
"lastIndexOf", javaLangObject, PsiTypeParameter.EMPTY_ARRAY, PsiSubstitutor.EMPTY);
PsiMethod lastindexof =
MethodSignatureUtil.findMethodBySignature(listClass, lastindexofSignature, false);
addMethod(lastindexof, 0, patternMethods, indices);
}
final PsiClass mapClass =
JavaPsiFacade.getInstance(manager.getProject()).findClass("java.util.Map", searchScope);
if (mapClass != null) {
PsiMethod remove =
MethodSignatureUtil.findMethodBySignature(mapClass, removeSignature, false);
addMethod(remove, 0, patternMethods, indices);
MethodSignature getSignature =
MethodSignatureUtil.createMethodSignature(
"get", javaLangObject, PsiTypeParameter.EMPTY_ARRAY, PsiSubstitutor.EMPTY);
PsiMethod get = MethodSignatureUtil.findMethodBySignature(mapClass, getSignature, false);
addMethod(get, 0, patternMethods, indices);
MethodSignature containsKeySignature =
MethodSignatureUtil.createMethodSignature(
"containsKey", javaLangObject, PsiTypeParameter.EMPTY_ARRAY, PsiSubstitutor.EMPTY);
PsiMethod containsKey =
MethodSignatureUtil.findMethodBySignature(mapClass, containsKeySignature, false);
addMethod(containsKey, 0, patternMethods, indices);
MethodSignature containsValueSignature =
MethodSignatureUtil.createMethodSignature(
"containsValue", javaLangObject, PsiTypeParameter.EMPTY_ARRAY, PsiSubstitutor.EMPTY);
PsiMethod containsValue =
MethodSignatureUtil.findMethodBySignature(mapClass, containsValueSignature, false);
addMethod(containsValue, 1, patternMethods, indices);
}
}