Detect use of deprecated API

This commit is a best effort attempt at identifying the members that
code generation invokes and might be deprecated. It introduces
a CodeWarnings helper class that records warnings, with special
handling for `@Deprecated`.

See gh-29597

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedBean.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.beans.testfixture.beans.factory.generator.deprecation;
+
+/**
+ * A sample bean that's fully deprecated.
+ *
+ * @author Stephane Nicoll
+ */
+@Deprecated
+public class DeprecatedBean {
+}
+

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedConstructor.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.beans.testfixture.beans.factory.generator.deprecation;
+
+import org.springframework.core.env.Environment;
+
+/**
+ * A sample whose factory method (constructor) is deprecated.
+ *
+ * @author Stephane Nicoll
+ */
+public class DeprecatedConstructor {
+
+	@Deprecated
+	public DeprecatedConstructor(Environment environment) {
+
+	}
+
+}
+

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedForRemovalBean.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.beans.testfixture.beans.factory.generator.deprecation;
+
+/**
+ * A sample bean that's fully deprecated for removal.
+ *
+ * @author Stephane Nicoll
+ */
+@Deprecated(forRemoval = true)
+public class DeprecatedForRemovalBean {
+}
+

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedForRemovalConstructor.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.beans.testfixture.beans.factory.generator.deprecation;
+
+import org.springframework.core.env.Environment;
+
+/**
+ * A sample whose factory method (constructor) is deprecated for removal
+ *
+ * @author Stephane Nicoll
+ */
+public class DeprecatedForRemovalConstructor {
+
+	@Deprecated(forRemoval = true)
+	public DeprecatedForRemovalConstructor(Environment environment) {
+
+	}
+
+}
+

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedForRemovalMemberConfiguration.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.beans.testfixture.beans.factory.generator.deprecation;
+
+/**
+ * A class with deprecated members for removal to test various use cases.
+ *
+ * @author Stephane Nicoll
+ */
+public class DeprecatedForRemovalMemberConfiguration {
+
+	@Deprecated(forRemoval = true)
+	public String deprecatedString() {
+		return "deprecated";
+	}
+
+	public String deprecatedParameter(DeprecatedForRemovalBean bean) {
+		return bean.toString();
+	}
+
+}
+

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedMemberConfiguration.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.beans.testfixture.beans.factory.generator.deprecation;
+
+/**
+ * A class with deprecated members to test various use cases.
+ *
+ * @author Stephane Nicoll
+ */
+public class DeprecatedMemberConfiguration {
+
+	@Deprecated
+	public String deprecatedString() {
+		return "deprecated";
+	}
+
+	public String deprecatedParameter(DeprecatedBean bean) {
+		return bean.toString();
+	}
+
+	public DeprecatedBean deprecatedReturnType() {
+		return new DeprecatedBean();
+	}
+
+}
+