private static boolean canBeReplacedByContains(
     PsiExpression lhs, PsiJavaToken sign, PsiExpression rhs, boolean flipped) {
   final PsiMethodCallExpression callExpression = (PsiMethodCallExpression) lhs;
   if (!isIndexOfCall(callExpression)) {
     return false;
   }
   final Object object = ExpressionUtils.computeConstantExpression(rhs);
   if (!(object instanceof Integer)) {
     return false;
   }
   final Integer integer = (Integer) object;
   final int constant = integer.intValue();
   final IElementType tokenType = sign.getTokenType();
   if (flipped) {
     if (constant == -1
         && (JavaTokenType.NE.equals(tokenType)
             || JavaTokenType.LT.equals(tokenType)
             || JavaTokenType.EQEQ.equals(tokenType)
             || JavaTokenType.GE.equals(tokenType))) {
       return true;
     } else if (constant == 0
         && (JavaTokenType.LE.equals(tokenType) || JavaTokenType.GT.equals(tokenType))) {
       return true;
     }
   } else {
     if (constant == -1
         && (JavaTokenType.NE.equals(tokenType)
             || JavaTokenType.GT.equals(tokenType)
             || JavaTokenType.EQEQ.equals(tokenType)
             || JavaTokenType.LE.equals(tokenType))) {
       return true;
     } else if (constant == 0
         && (JavaTokenType.GE.equals(tokenType) || JavaTokenType.LT.equals(tokenType))) {
       return true;
     }
   }
   return false;
 }
コード例 #2
0
 @Nullable
 private String createListIterationText(@NotNull PsiForStatement forStatement) {
   final PsiBinaryExpression condition =
       (PsiBinaryExpression) ParenthesesUtils.stripParentheses(forStatement.getCondition());
   if (condition == null) {
     return null;
   }
   final PsiExpression lhs = ParenthesesUtils.stripParentheses(condition.getLOperand());
   if (lhs == null) {
     return null;
   }
   final PsiExpression rhs = ParenthesesUtils.stripParentheses(condition.getROperand());
   if (rhs == null) {
     return null;
   }
   final IElementType tokenType = condition.getOperationTokenType();
   final String indexName;
   PsiExpression collectionSize;
   if (JavaTokenType.LT.equals(tokenType)) {
     indexName = lhs.getText();
     collectionSize = rhs;
   } else if (JavaTokenType.GT.equals(tokenType)) {
     indexName = rhs.getText();
     collectionSize = lhs;
   } else {
     return null;
   }
   if (collectionSize instanceof PsiReferenceExpression) {
     final PsiReferenceExpression referenceExpression = (PsiReferenceExpression) collectionSize;
     final PsiElement target = referenceExpression.resolve();
     if (target instanceof PsiVariable) {
       final PsiVariable variable = (PsiVariable) target;
       collectionSize = ParenthesesUtils.stripParentheses(variable.getInitializer());
     }
   }
   if (!(collectionSize instanceof PsiMethodCallExpression)) {
     return null;
   }
   final PsiMethodCallExpression methodCallExpression =
       (PsiMethodCallExpression) ParenthesesUtils.stripParentheses(collectionSize);
   if (methodCallExpression == null) {
     return null;
   }
   final PsiReferenceExpression listLengthExpression =
       methodCallExpression.getMethodExpression();
   final PsiExpression qualifier =
       ParenthesesUtils.stripParentheses(listLengthExpression.getQualifierExpression());
   final PsiReferenceExpression listReference;
   if (qualifier instanceof PsiReferenceExpression) {
     listReference = (PsiReferenceExpression) qualifier;
   } else {
     listReference = null;
   }
   PsiType parameterType;
   if (listReference == null) {
     parameterType = extractListTypeFromContainingClass(forStatement);
   } else {
     final PsiType type = listReference.getType();
     if (type == null) {
       return null;
     }
     parameterType = extractContentTypeFromType(type);
   }
   if (parameterType == null) {
     parameterType = TypeUtils.getObjectType(forStatement);
   }
   final String typeString = parameterType.getCanonicalText();
   final PsiVariable listVariable;
   if (listReference == null) {
     listVariable = null;
   } else {
     final PsiElement target = listReference.resolve();
     if (!(target instanceof PsiVariable)) {
       return null;
     }
     listVariable = (PsiVariable) target;
   }
   final PsiStatement body = forStatement.getBody();
   final PsiStatement firstStatement = getFirstStatement(body);
   final boolean isDeclaration =
       isListElementDeclaration(firstStatement, listVariable, indexName, parameterType);
   final String contentVariableName;
   @NonNls final String finalString;
   final PsiStatement statementToSkip;
   if (isDeclaration) {
     final PsiDeclarationStatement declarationStatement =
         (PsiDeclarationStatement) firstStatement;
     assert declarationStatement != null;
     final PsiElement[] declaredElements = declarationStatement.getDeclaredElements();
     final PsiElement declaredElement = declaredElements[0];
     if (!(declaredElement instanceof PsiVariable)) {
       return null;
     }
     final PsiVariable variable = (PsiVariable) declaredElement;
     contentVariableName = variable.getName();
     statementToSkip = declarationStatement;
     if (variable.hasModifierProperty(PsiModifier.FINAL)) {
       finalString = "final ";
     } else {
       finalString = "";
     }
   } else {
     final String collectionName;
     if (listReference == null) {
       collectionName = null;
     } else {
       collectionName = listReference.getReferenceName();
     }
     contentVariableName = createNewVariableName(forStatement, parameterType, collectionName);
     finalString = "";
     statementToSkip = null;
   }
   @NonNls final StringBuilder out = new StringBuilder();
   out.append("for(");
   out.append(finalString);
   out.append(typeString);
   out.append(' ');
   out.append(contentVariableName);
   out.append(": ");
   @NonNls final String listName;
   if (listReference == null) {
     listName = "this";
   } else {
     listName = listReference.getText();
   }
   out.append(listName);
   out.append(')');
   if (body != null) {
     replaceCollectionGetAccess(
         body, contentVariableName, listVariable, indexName, statementToSkip, out);
   }
   return out.toString();
 }