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This commit is contained in:
Alexey Kudravtsev
2004-11-11 16:39:07 +03:00
parent 4b2c6df64d
commit d76111433b
1 changed files with 19 additions and 12 deletions
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31
plugins/InspectionGadgets/src/com/siyeh/ig/psiutils/ExpectedTypeUtils.java
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@@ -2,12 +2,12 @@ package com.siyeh.ig.psiutils;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.search.GlobalSearchScope;
public class ExpectedTypeUtils {
private ExpectedTypeUtils() {
super();
}
public static PsiType findExpectedType(PsiExpression exp) {
@@ -49,7 +49,13 @@ public class ExpectedTypeUtils {
if (rExpression != null) {
if (rExpression.equals(wrappedExp)) {
final PsiExpression lExpression = assignment.getLExpression();
return lExpression.getType();
PsiType lType = lExpression.getType();
if (lType == null) return null;
// e.g. String += any type
if (TypeUtils.isJavaLangString(lType) && JavaTokenType.PLUSEQ.equals(assignment.getOperationSign().getTokenType())) {
return rExpression.getType();
}
return lType;
}
}
} else if (context instanceof PsiBinaryExpression) {
@@ -79,15 +85,15 @@ public class ExpectedTypeUtils {
return conditional.getType();
} else if (context instanceof PsiExpressionList) {
final PsiExpressionList expList = (PsiExpressionList) context;
final PsiMethod method = ExpectedTypeUtils.findCalledMethod(expList);
final PsiMethod method = findCalledMethod(expList);
if (method == null) {
return null;
}
final int parameterPosition = ExpectedTypeUtils.getParameterPosition(expList, wrappedExp);
return ExpectedTypeUtils.getTypeOfParemeter(method, parameterPosition);
final int parameterPosition = getParameterPosition(expList, wrappedExp);
return getTypeOfParemeter(method, parameterPosition);
} else if (context instanceof PsiReturnStatement) {
final PsiReturnStatement psiReturnStatement = (PsiReturnStatement) context;
final PsiMethod method = ExpectedTypeUtils.findEnclosingPsiMethod(psiReturnStatement);
final PsiMethod method = findEnclosingPsiMethod(psiReturnStatement);
if (method == null) {
return null;
}
@@ -108,12 +114,13 @@ public class ExpectedTypeUtils {
return null;
}
private static boolean isArithmeticOperation(PsiJavaToken sign) {
return sign.equals(JavaTokenType.PLUS)
|| sign.equals(JavaTokenType.MINUS)
|| sign.equals(JavaTokenType.ASTERISK)
|| sign.equals(JavaTokenType.DIV) ||
sign.equals(JavaTokenType.PERC);
private static boolean isArithmeticOperation(PsiJavaToken javaToken) {
IElementType sign = javaToken.getTokenType();
return JavaTokenType.PLUS.equals(sign)
|| JavaTokenType.MINUS.equals(sign)
|| JavaTokenType.ASTERISK.equals(sign)
|| JavaTokenType.DIV.equals(sign) ||
JavaTokenType.PERC.equals(sign);
}
private static int getParameterPosition(PsiExpressionList expressionList, PsiExpression exp) {