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Refine null-safety in the spring-expression module 

Closes gh-34156
This commit is contained in:
Sébastien Deleuze 2024-12-26 14:59:50 +01:00
parent 4747ab67e6
commit be11e73d2c
5 changed files with 8 additions and 9 deletions
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2
spring-expression/src/main/java/org/springframework/expression/ExpressionException.java
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@ -153,7 +153,7 @@ public class ExpressionException extends RuntimeException {
* that caused the failure.
* @since 4.0
*/
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Dataflow analysis limitation
public String getSimpleMessage() {
return super.getMessage();
}

1
spring-expression/src/main/java/org/springframework/expression/spel/ast/FunctionReference.java
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@ -174,7 +174,6 @@ public class FunctionReference extends SpelNodeImpl {
* @throws EvaluationException if there is any problem invoking the method
* @since 6.1
*/
@SuppressWarnings("NullAway") // TODO Remove when NullAway 0.12.2 is released, see https://github.com/uber/NullAway/pull/1089
private TypedValue executeFunctionViaMethodHandle(ExpressionState state, MethodHandle methodHandle) throws EvaluationException {
Object[] functionArgs = getArguments(state);
MethodType declaredParams = methodHandle.type();

2
spring-expression/src/main/java/org/springframework/expression/spel/ast/Operator.java
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@ -351,7 +351,7 @@ public abstract class Operator extends SpelNodeImpl {
* @param rightActualDescriptor the dynamic/runtime right object descriptor
* @return a DescriptorComparison object indicating the type of compatibility, if any
*/
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Dataflow analysis limitation
public static DescriptorComparison checkNumericCompatibility(
@Nullable String leftDeclaredDescriptor, @Nullable String rightDeclaredDescriptor,
@Nullable String leftActualDescriptor, @Nullable String rightActualDescriptor) {

8
spring-expression/src/main/java/org/springframework/expression/spel/standard/InternalSpelExpressionParser.java
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@ -166,7 +166,7 @@ class InternalSpelExpressionParser extends TemplateAwareExpressionParser {
// | (DEFAULT^ logicalOrExpression)
// | (QMARK^ expression COLON! expression)
// | (ELVIS^ expression))?;
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Not null assertion performed in SpelNodeImpl constructor
private @Nullable SpelNodeImpl eatExpression() {
SpelNodeImpl expr = eatLogicalOrExpression();
Token t = peekToken();
@ -273,7 +273,7 @@ class InternalSpelExpressionParser extends TemplateAwareExpressionParser {
}
//sumExpression: productExpression ( (PLUS^ | MINUS^) productExpression)*;
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Not null assertion performed in SpelNodeImpl constructor
private @Nullable SpelNodeImpl eatSumExpression() {
SpelNodeImpl expr = eatProductExpression();
while (peekToken(TokenKind.PLUS, TokenKind.MINUS, TokenKind.INC)) {
@ -311,7 +311,7 @@ class InternalSpelExpressionParser extends TemplateAwareExpressionParser {
}
// powerExpr : unaryExpression (POWER^ unaryExpression)? (INC || DEC) ;
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Not null assertion performed in SpelNodeImpl constructor
private @Nullable SpelNodeImpl eatPowerIncDecExpression() {
SpelNodeImpl expr = eatUnaryExpression();
if (peekToken(TokenKind.POWER)) {
@ -331,7 +331,7 @@ class InternalSpelExpressionParser extends TemplateAwareExpressionParser {
}
// unaryExpression: (PLUS^ | MINUS^ | BANG^ | INC^ | DEC^) unaryExpression | primaryExpression ;
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Not null assertion performed in SpelNodeImpl constructor
private @Nullable SpelNodeImpl eatUnaryExpression() {
if (peekToken(TokenKind.NOT, TokenKind.PLUS, TokenKind.MINUS)) {
Token t = takeToken();

4
spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
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@ -154,7 +154,7 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
}
@Override
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Dataflow analysis limitation
public TypedValue read(EvaluationContext context, @Nullable Object target, String name) throws AccessException {
Assert.state(target != null, "Target must not be null");
Class<?> type = (target instanceof Class<?> clazz ? clazz : target.getClass());
@ -507,7 +507,7 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
* <p>Note: An optimized accessor is currently only usable for read attempts.
* Do not call this method if you need a read-write accessor.
*/
@SuppressWarnings("NullAway")
@SuppressWarnings("NullAway") // Dataflow analysis limitation
public PropertyAccessor createOptimalAccessor(EvaluationContext context, @Nullable Object target, String name) {
// Don't be clever for arrays or a null target...
if (target == null) {