@Nullable private static PsiParameter getAnchorParameter(PsiMethod methodToReplaceIn) { PsiParameterList parameterList = methodToReplaceIn.getParameterList(); final PsiParameter anchorParameter; final PsiParameter[] parameters = parameterList.getParameters(); final int length = parameters.length; if (!methodToReplaceIn.isVarArgs()) { anchorParameter = length > 0 ? parameters[length - 1] : null; } else { LOG.assertTrue(length > 0); LOG.assertTrue(parameters[length - 1].isVarArgs()); anchorParameter = length > 1 ? parameters[length - 2] : null; } return anchorParameter; }
private void processChangedMethodCall(PsiElement element) throws IncorrectOperationException { if (element.getParent() instanceof PsiMethodCallExpression) { PsiMethodCallExpression methodCall = (PsiMethodCallExpression) element.getParent(); if (myMethodToReplaceIn == myMethodToSearchFor && PsiTreeUtil.isAncestor(methodCall, myParameterInitializer, false)) return; PsiElementFactory factory = JavaPsiFacade.getInstance(methodCall.getProject()).getElementFactory(); PsiExpression expression = factory.createExpressionFromText(myParameterName, null); final PsiExpressionList argList = methodCall.getArgumentList(); final PsiExpression[] exprs = argList.getExpressions(); boolean first = false; PsiElement anchor = null; if (myMethodToSearchFor.isVarArgs()) { final int oldParamCount = myMethodToSearchFor.getParameterList().getParametersCount() - 1; if (exprs.length >= oldParamCount) { if (oldParamCount > 1) { anchor = exprs[oldParamCount - 2]; } else { first = true; anchor = null; } } else { anchor = exprs[exprs.length - 1]; } } else if (exprs.length > 0) { anchor = exprs[exprs.length - 1]; } if (anchor != null) { argList.addAfter(expression, anchor); } else { if (first && exprs.length > 0) { argList.addBefore(expression, exprs[0]); } else { argList.add(expression); } } removeParametersFromCall(argList); } else { LOG.error(element.getParent()); } }