@Nullable
private static PsiType guessElementTypeFromReference(
MethodPatternMap methodPatternMap, PsiElement ref, TextRange rangeToIgnore) {
PsiElement refParent = ref.getParent();
if (refParent instanceof PsiReferenceExpression) {
PsiReferenceExpression parentExpr = (PsiReferenceExpression) refParent;
if (ref.equals(parentExpr.getQualifierExpression())
&& parentExpr.getParent() instanceof PsiMethodCallExpression) {
String methodName = parentExpr.getReferenceName();
PsiMethodCallExpression methodCall = (PsiMethodCallExpression) parentExpr.getParent();
PsiExpression[] args = methodCall.getArgumentList().getExpressions();
MethodPattern pattern = methodPatternMap.findPattern(methodName, args.length);
if (pattern != null) {
if (pattern.parameterIndex < 0) { // return value
if (methodCall.getParent() instanceof PsiTypeCastExpression
&& (rangeToIgnore == null || !rangeToIgnore.contains(methodCall.getTextRange()))) {
return ((PsiTypeCastExpression) methodCall.getParent()).getType();
}
} else {
return args[pattern.parameterIndex].getType();
}
}
}
}
return null;
}
private void addExprTypesWhenContainerElement(LinkedHashSet<PsiType> set, PsiExpression expr) {
if (expr instanceof PsiMethodCallExpression) {
PsiMethodCallExpression callExpr = (PsiMethodCallExpression) expr;
PsiReferenceExpression methodExpr = callExpr.getMethodExpression();
String methodName = methodExpr.getReferenceName();
MethodPattern pattern =
myMethodPatternMap.findPattern(
methodName, callExpr.getArgumentList().getExpressions().length);
if (pattern != null && pattern.parameterIndex < 0 /* return value */) {
PsiExpression qualifier = methodExpr.getQualifierExpression();
if (qualifier != null) {
PsiType[] types = guessContainerElementType(qualifier, null);
for (PsiType type : types) {
if (type instanceof PsiClassType) {
if (((PsiClassType) type).resolve() instanceof PsiAnonymousClass) continue;
}
set.add(type);
}
}
}
}
}
@SuppressWarnings({"HardCodedStringLiteral"})
private void initMethodPatterns() {
// Collection
myMethodPatternMap.addPattern(new MethodPattern("add", 1, 0));
myMethodPatternMap.addPattern(new MethodPattern("contains", 1, 0));
myMethodPatternMap.addPattern(new MethodPattern("remove", 1, 0));
// Vector
myMethodPatternMap.addPattern(new MethodPattern("add", 2, 1));
myMethodPatternMap.addPattern(new MethodPattern("addElement", 1, 0));
myMethodPatternMap.addPattern(new MethodPattern("elementAt", 1, -1));
myMethodPatternMap.addPattern(new MethodPattern("firstElement", 0, -1));
myMethodPatternMap.addPattern(new MethodPattern("lastElement", 0, -1));
myMethodPatternMap.addPattern(new MethodPattern("get", 1, -1));
myMethodPatternMap.addPattern(new MethodPattern("indexOf", 1, 0));
myMethodPatternMap.addPattern(new MethodPattern("indexOf", 2, 0));
myMethodPatternMap.addPattern(new MethodPattern("lastIndexOf", 1, 0));
myMethodPatternMap.addPattern(new MethodPattern("lastIndexOf", 2, 0));
myMethodPatternMap.addPattern(new MethodPattern("insertElementAt", 2, 0));
myMethodPatternMap.addPattern(new MethodPattern("removeElement", 1, 0));
myMethodPatternMap.addPattern(new MethodPattern("set", 2, 1));
myMethodPatternMap.addPattern(new MethodPattern("setElementAt", 2, 0));
}