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Polish SpEL internals

This commit is contained in:
Sam Brannen 2024-03-06 11:31:10 +01:00
parent 19b5f11734
commit 9eea768205
4 changed files with 16 additions and 12 deletions
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20
spring-expression/src/main/java/org/springframework/expression/spel/ast/MethodReference.java
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@ -1,5 +1,5 @@
/*
* Copyright 2002-2023 the original author or authors.
* Copyright 2002-2024 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -309,18 +309,17 @@ public class MethodReference extends SpelNodeImpl {
if (executorToCheck == null || !(executorToCheck.get() instanceof ReflectiveMethodExecutor methodExecutor)) {
throw new IllegalStateException("No applicable cached executor found: " + executorToCheck);
}
Method method = methodExecutor.getMethod();
boolean isStaticMethod = Modifier.isStatic(method.getModifiers());
boolean isStatic = Modifier.isStatic(method.getModifiers());
String descriptor = cf.lastDescriptor();
if (descriptor == null && !isStaticMethod) {
if (descriptor == null && !isStatic) {
// Nothing on the stack but something is needed
cf.loadTarget(mv);
}
Label skipIfNull = null;
if (this.nullSafe && (descriptor != null || !isStaticMethod)) {
if (this.nullSafe && (descriptor != null || !isStatic)) {
skipIfNull = new Label();
Label continueLabel = new Label();
mv.visitInsn(DUP);
@ -330,8 +329,9 @@ public class MethodReference extends SpelNodeImpl {
mv.visitLabel(continueLabel);
}
if (descriptor != null && isStaticMethod) {
// Something on the stack when nothing is needed
if (descriptor != null && isStatic) {
// A static method call will not consume what is on the stack, so
// it needs to be popped off.
mv.visitInsn(POP);
}
@ -349,13 +349,13 @@ public class MethodReference extends SpelNodeImpl {
classDesc = publicDeclaringClass.getName().replace('.', '/');
}
if (!isStaticMethod && (descriptor == null || !descriptor.substring(1).equals(classDesc))) {
if (!isStatic && (descriptor == null || !descriptor.substring(1).equals(classDesc))) {
CodeFlow.insertCheckCast(mv, "L" + classDesc);
}
generateCodeForArguments(mv, cf, method, this.children);
mv.visitMethodInsn((isStaticMethod ? INVOKESTATIC : (method.isDefault() ? INVOKEINTERFACE : INVOKEVIRTUAL)),
classDesc, method.getName(), CodeFlow.createSignatureDescriptor(method),
int opcode = (isStatic ? INVOKESTATIC : method.isDefault() ? INVOKEINTERFACE : INVOKEVIRTUAL);
mv.visitMethodInsn(opcode, classDesc, method.getName(), CodeFlow.createSignatureDescriptor(method),
method.getDeclaringClass().isInterface());
cf.pushDescriptor(this.exitTypeDescriptor);

4
spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectiveMethodExecutor.java
View File

@ -40,6 +40,10 @@ public class ReflectiveMethodExecutor implements MethodExecutor {
private final Method originalMethod;
/**
* The method to invoke via reflection, which is not necessarily the method
* to invoke in a compiled expression.
*/
private final Method methodToInvoke;
@Nullable

2
spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
View File

@ -707,7 +707,7 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
}
else {
if (descriptor != null) {
// A static field/method call will not consume what is on the stack,
// A static field/method call will not consume what is on the stack, so
// it needs to be popped off.
mv.visitInsn(POP);
}

2
spring-expression/src/test/java/org/springframework/expression/spel/SpelReproTests.java
View File

@ -1325,7 +1325,7 @@ class SpelReproTests extends AbstractExpressionTests {
assertThat(Array.get(result, 2)).isEqualTo(XYZ.Z);
}
@Test
@Test // https://github.com/spring-projects/spring-framework/issues/15119
void SPR10486() {
SpelExpressionParser parser = new SpelExpressionParser();
StandardEvaluationContext context = new StandardEvaluationContext();