Add initial (incomplete) definition for java/lang/Exception and `ja…

…va/lang/Throwable`.

Full syntax support for `env->ThrowNew` does not exist yet.

Inherited methods/fields are not yet supported so these definitions are incomplete.

PiperOrigin-RevId: 674307011

BUILD

@@ -28,6 +28,8 @@ cc_library(
     deps = [
         ":jni_dep",
         "//class_defs:java_lang_classes",
+        "//class_defs:java_lang_exception",
+        "//class_defs:java_lang_throwable",
         "//class_defs:java_util_array_list",
         "//class_defs:java_util_classes",
         "//implementation:array",

class_defs/BUILD

@@ -12,6 +12,38 @@ filegroup(
 
 exports_files(["LICENSE"])
 
+cc_library(
+    name = "java_lang_exception",
+    hdrs = ["java_lang_exception.h"],
+    deps = [
+        ":java_lang_throwable",
+        "//:jni_dep",
+        "//implementation:class",
+        "//implementation:constructor",
+        "//implementation:method",
+        "//implementation:params",
+        "//implementation:return",
+        "//implementation:self",
+        "//implementation:static",
+    ],
+)
+
+cc_library(
+    name = "java_lang_throwable",
+    hdrs = ["java_lang_throwable.h"],
+    deps = [
+        "//:jni_dep",
+        "//implementation:array",
+        "//implementation:class",
+        "//implementation:constructor",
+        "//implementation:method",
+        "//implementation:params",
+        "//implementation:return",
+        "//implementation:self",
+        "//implementation:static",
+    ],
+)
+
 cc_library(
     name = "java_lang_classes",
     hdrs = ["java_lang_classes.h"],

class_defs/README.md

@@ -0,0 +1,8 @@
+** WARNING **
+
+Class definitions in this directory may have their path change in the future, you may be better suited creating copies until full scrapes of APIs are provided in the future.
+
+These are used to bootstrap JNI Bind, but may change in the future, and may also be superseded by separate more complete definitions.
+
+Some definitions in this directory exist solely for phase 1 compilation and as such may be incomplete.
+

class_defs/java_lang_classes.h

@@ -58,13 +58,6 @@ static constexpr Class kJavaLangString{
   Method{"toString", Return{jstring{}}, Params<>{}},
 };
 
-static constexpr Class kJavaLangException{
-  "java/lang/Exception",
-  Method{"getMessage", Return{jstring{}}, Params<>{}},
-  Method{"printStackTrace", Return{}, Params<>{}},
-  Method{"toString", Return{jstring{}}, Params<>{}},
-};
-
 // clang-format on
 
 }  // namespace jni

class_defs/java_lang_exception.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * 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
+ *
+ *      http://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.
+ */
+
+#ifndef JNI_BIND_CLASS_DEFS_JAVA_LANG_EXCEPTION_H_
+#define JNI_BIND_CLASS_DEFS_JAVA_LANG_EXCEPTION_H_
+
+#include "class_defs/java_lang_throwable.h"
+#include "implementation/class.h"
+#include "implementation/constructor.h"
+#include "implementation/method.h"
+#include "implementation/params.h"
+#include "implementation/return.h"
+#include "jni_dep.h"
+
+namespace jni {
+
+static constexpr Class kJavaLangException{
+    "java/lang/Exception",
+    Constructor{},
+    Constructor<jstring>{},
+    Constructor{jstring{}, kJavaLangThrowable, jboolean{}, jboolean{}},
+    Constructor{kJavaLangThrowable},
+
+    // Inherited.
+    Method{"getMessage", Return{jstring{}}, Params<>{}},
+    Method{"printStackTrace", Return{}, Params<>{}},
+    Method{"toString", Return{jstring{}}, Params<>{}},
+};
+
+}  // namespace jni
+
+#endif  // JNI_BIND_CLASS_DEFS_JAVA_LANG_EXCEPTION_H_

class_defs/java_lang_throwable.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * 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
+ *
+ *      http://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.
+ */
+
+#ifndef JNI_BIND_CLASS_DEFS_JAVA_LANG_THROWABLE_H_
+#define JNI_BIND_CLASS_DEFS_JAVA_LANG_THROWABLE_H_
+
+#include "implementation/class.h"
+#include "implementation/constructor.h"
+#include "implementation/self.h"
+#include "jni_dep.h"
+
+namespace jni {
+
+static constexpr Class kJavaLangThrowable{
+    "java/lang/Throwable",
+    Constructor{},
+    Constructor<jstring>{},
+    Constructor{jstring{}, Self{}},
+    Constructor{jstring{}, Self{}, jboolean{}, jboolean{}},
+    Constructor{Self{}}};
+
+}  // namespace jni
+
+#endif  // JNI_BIND_CLASS_DEFS_JAVA_LANG_THROWABLE_H_

jni_bind.h

@@ -81,6 +81,8 @@ static constexpr Configuration kConfig{
 
 // Convenience headers for system libraries.
 #include "class_defs/java_lang_classes.h"
+#include "class_defs/java_lang_exception.h"
+#include "class_defs/java_lang_throwable.h"
 #include "class_defs/java_util_array_list.h"
 #include "class_defs/java_util_classes.h"