private String[] getSuggestionsByName(
String name, VariableKind variableKind, boolean isArray, boolean correctKeywords) {
boolean upperCaseStyle = variableKind == VariableKind.STATIC_FINAL_FIELD;
boolean preferLongerNames = getSettings().PREFER_LONGER_NAMES;
String prefix = getPrefixByVariableKind(variableKind);
String suffix = getSuffixByVariableKind(variableKind);
List<String> answer = new ArrayList<String>();
for (String suggestion :
NameUtil.getSuggestionsByName(
name, prefix, suffix, upperCaseStyle, preferLongerNames, isArray)) {
answer.add(correctKeywords ? changeIfNotIdentifier(suggestion) : suggestion);
}
return ArrayUtil.toStringArray(answer);
}
@Override
public String propertyNameToVariableName(String propertyName, VariableKind variableKind) {
if (variableKind == VariableKind.STATIC_FINAL_FIELD) {
String[] words = NameUtil.nameToWords(propertyName);
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < words.length; i++) {
String word = words[i];
if (i > 0) {
buffer.append("_");
}
buffer.append(StringUtil.toUpperCase(word));
}
return buffer.toString();
}
String prefix = getPrefixByVariableKind(variableKind);
String name = propertyName;
if (!name.isEmpty() && !prefix.isEmpty() && !StringUtil.endsWithChar(prefix, '_')) {
name = Character.toUpperCase(name.charAt(0)) + name.substring(1);
}
name = prefix + name + getSuffixByVariableKind(variableKind);
name = changeIfNotIdentifier(name);
return name;
}
private NamesByExprInfo suggestVariableNameByExpressionPlace(
PsiExpression expr, final VariableKind variableKind, boolean correctKeywords) {
if (expr.getParent() instanceof PsiExpressionList) {
PsiExpressionList list = (PsiExpressionList) expr.getParent();
PsiElement listParent = list.getParent();
PsiSubstitutor subst = PsiSubstitutor.EMPTY;
PsiMethod method = null;
if (listParent instanceof PsiMethodCallExpression) {
final JavaResolveResult resolveResult =
((PsiMethodCallExpression) listParent).getMethodExpression().advancedResolve(false);
method = (PsiMethod) resolveResult.getElement();
subst = resolveResult.getSubstitutor();
} else {
if (listParent instanceof PsiAnonymousClass) {
listParent = listParent.getParent();
}
if (listParent instanceof PsiNewExpression) {
method = ((PsiNewExpression) listParent).resolveConstructor();
}
}
if (method != null) {
final PsiElement navElement = method.getNavigationElement();
if (navElement instanceof PsiMethod) {
method = (PsiMethod) navElement;
}
PsiExpression[] expressions = list.getExpressions();
int index = -1;
for (int i = 0; i < expressions.length; i++) {
if (expressions[i] == expr) {
index = i;
break;
}
}
PsiParameter[] parameters = method.getParameterList().getParameters();
if (index < parameters.length) {
String name = parameters[index].getName();
if (name != null
&& TypeConversionUtil.areTypesAssignmentCompatible(
subst.substitute(parameters[index].getType()), expr)) {
name = variableNameToPropertyName(name, VariableKind.PARAMETER);
String[] names = getSuggestionsByName(name, variableKind, false, correctKeywords);
if (expressions.length == 1) {
final String methodName = method.getName();
String[] words = NameUtil.nameToWords(methodName);
if (words.length > 0) {
final String firstWord = words[0];
if (SET_PREFIX.equals(firstWord)) {
final String propertyName = methodName.substring(firstWord.length());
final String[] setterNames =
getSuggestionsByName(propertyName, variableKind, false, correctKeywords);
names = ArrayUtil.mergeArrays(names, setterNames);
}
}
}
return new NamesByExprInfo(name, names);
}
}
}
} else if (expr.getParent() instanceof PsiAssignmentExpression
&& variableKind == VariableKind.PARAMETER) {
final PsiAssignmentExpression assignmentExpression =
(PsiAssignmentExpression) expr.getParent();
if (expr == assignmentExpression.getRExpression()) {
final PsiExpression leftExpression = assignmentExpression.getLExpression();
if (leftExpression instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) leftExpression).getQualifier() == null) {
String name = leftExpression.getText();
if (name != null) {
final PsiElement resolve = ((PsiReferenceExpression) leftExpression).resolve();
if (resolve instanceof PsiVariable) {
name = variableNameToPropertyName(name, getVariableKind((PsiVariable) resolve));
}
String[] names = getSuggestionsByName(name, variableKind, false, correctKeywords);
return new NamesByExprInfo(name, names);
}
}
}
}
return new NamesByExprInfo(null, ArrayUtil.EMPTY_STRING_ARRAY);
}
private NamesByExprInfo suggestVariableNameByExpressionOnly(
PsiExpression expr,
final VariableKind variableKind,
boolean correctKeywords,
boolean useAllMethodNames) {
if (expr instanceof PsiMethodCallExpression) {
PsiReferenceExpression methodExpr = ((PsiMethodCallExpression) expr).getMethodExpression();
String methodName = methodExpr.getReferenceName();
if (methodName != null) {
if ("of".equals(methodName) || "ofNullable".equals(methodName)) {
if (isJavaUtilMethodCall((PsiMethodCallExpression) expr)) {
PsiExpression[] expressions =
((PsiMethodCallExpression) expr).getArgumentList().getExpressions();
if (expressions.length > 0) {
return suggestVariableNameByExpressionOnly(
expressions[0], variableKind, correctKeywords, useAllMethodNames);
}
}
}
if ("map".equals(methodName)
|| "flatMap".equals(methodName)
|| "filter".equals(methodName)) {
if (isJavaUtilMethodCall((PsiMethodCallExpression) expr)) {
return new NamesByExprInfo(null);
}
}
String[] words = NameUtil.nameToWords(methodName);
if (words.length > 0) {
final String firstWord = words[0];
if (GET_PREFIX.equals(firstWord)
|| IS_PREFIX.equals(firstWord)
|| FIND_PREFIX.equals(firstWord)
|| CREATE_PREFIX.equals(firstWord)) {
if (words.length > 1) {
final String propertyName = methodName.substring(firstWord.length());
String[] names =
getSuggestionsByName(propertyName, variableKind, false, correctKeywords);
final PsiExpression qualifierExpression = methodExpr.getQualifierExpression();
if (qualifierExpression instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) qualifierExpression).resolve()
instanceof PsiVariable) {
names =
ArrayUtil.append(
names,
StringUtil.sanitizeJavaIdentifier(
changeIfNotIdentifier(
qualifierExpression.getText()
+ StringUtil.capitalize(propertyName))));
}
return new NamesByExprInfo(propertyName, names);
}
} else if (words.length == 1 || useAllMethodNames) {
return new NamesByExprInfo(
methodName, getSuggestionsByName(methodName, variableKind, false, correctKeywords));
}
}
}
} else if (expr instanceof PsiReferenceExpression) {
String propertyName = ((PsiReferenceExpression) expr).getReferenceName();
PsiElement refElement = ((PsiReferenceExpression) expr).resolve();
if (refElement instanceof PsiVariable) {
VariableKind refVariableKind = getVariableKind((PsiVariable) refElement);
propertyName = variableNameToPropertyName(propertyName, refVariableKind);
}
if (refElement != null && propertyName != null) {
String[] names = getSuggestionsByName(propertyName, variableKind, false, correctKeywords);
return new NamesByExprInfo(propertyName, names);
}
} else if (expr instanceof PsiArrayAccessExpression) {
PsiExpression arrayExpr = ((PsiArrayAccessExpression) expr).getArrayExpression();
if (arrayExpr instanceof PsiReferenceExpression) {
String arrayName = ((PsiReferenceExpression) arrayExpr).getReferenceName();
PsiElement refElement = ((PsiReferenceExpression) arrayExpr).resolve();
if (refElement instanceof PsiVariable) {
VariableKind refVariableKind = getVariableKind((PsiVariable) refElement);
arrayName = variableNameToPropertyName(arrayName, refVariableKind);
}
if (arrayName != null) {
String name = StringUtil.unpluralize(arrayName);
if (name != null) {
String[] names = getSuggestionsByName(name, variableKind, false, correctKeywords);
return new NamesByExprInfo(name, names);
}
}
}
} else if (expr instanceof PsiLiteralExpression
&& variableKind == VariableKind.STATIC_FINAL_FIELD) {
final PsiLiteralExpression literalExpression = (PsiLiteralExpression) expr;
final Object value = literalExpression.getValue();
if (value instanceof String) {
final String stringValue = (String) value;
String[] names = getSuggestionsByValue(stringValue);
if (names.length > 0) {
return new NamesByExprInfo(null, constantValueToConstantName(names));
}
}
} else if (expr instanceof PsiParenthesizedExpression) {
return suggestVariableNameByExpressionOnly(
((PsiParenthesizedExpression) expr).getExpression(),
variableKind,
correctKeywords,
useAllMethodNames);
} else if (expr instanceof PsiTypeCastExpression) {
return suggestVariableNameByExpressionOnly(
((PsiTypeCastExpression) expr).getOperand(),
variableKind,
correctKeywords,
useAllMethodNames);
} else if (expr instanceof PsiLiteralExpression) {
final String text = StringUtil.stripQuotesAroundValue(expr.getText());
if (isIdentifier(text)) {
return new NamesByExprInfo(
text, getSuggestionsByName(text, variableKind, false, correctKeywords));
}
}
return new NamesByExprInfo(null, ArrayUtil.EMPTY_STRING_ARRAY);
}