зеркало из https://github.com/mozilla/gecko-dev.git
526 строки
22 KiB
C
526 строки
22 KiB
C
/* -*- Mode: C; tab-width: 8 -*-
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* Copyright (C) 1998 Netscape Communications Corporation, All Rights Reserved.
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*/
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/*
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* This file is part of the Java-vendor-neutral implementation of LiveConnect
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*
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* Declarations of private (internal) functions/data/types for
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* JavaScript <==> Java communication.
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*
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*/
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#ifndef _JSJAVA_PVT_H
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#define _JSJAVA_PVT_H
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#include "prtypes.h"
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/* NSPR1 compatibility definitions */
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#ifdef NSPR20
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# include "prprf.h"
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# include "prlog.h"
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# include "plhash.h" /* NSPR hash-tables */
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#else
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# include "prprintf.h"
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# include "prassert.h"
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# include "prhash.h" /* NSPR hash-tables */
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# define PRHashNumber prhashcode
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#endif
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#ifdef XP_MAC
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# include "prosdep.h"
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#endif
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#include "jsj_hash.h" /* Hash tables */
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#include "jni.h" /* Java Native Interface */
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#include "jsapi.h" /* JavaScript engine API */
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#include "jsjava.h" /* LiveConnect public API */
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/*************************** Type Declarations ******************************/
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/* Forward type declarations */
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typedef struct JavaMemberDescriptor JavaMemberDescriptor;
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typedef struct JavaMethodSpec JavaMethodSpec;
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typedef struct JavaClassDescriptor JavaClassDescriptor;
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typedef struct JavaClassDescriptor JavaSignature;
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typedef struct CapturedJSError CapturedJSError;
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typedef struct JavaMemberVal JavaMemberVal;
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/*
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* This enum uses the same character encoding used by the JDK to encode
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* Java type signatures, but the enum is easier to debug/compile with.
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*/
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typedef enum {
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JAVA_SIGNATURE_ARRAY = '[',
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JAVA_SIGNATURE_BYTE = 'B',
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JAVA_SIGNATURE_CHAR = 'C',
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JAVA_SIGNATURE_CLASS = 'L',
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JAVA_SIGNATURE_FLOAT = 'F',
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JAVA_SIGNATURE_DOUBLE = 'D',
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JAVA_SIGNATURE_INT = 'I',
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JAVA_SIGNATURE_LONG = 'J',
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JAVA_SIGNATURE_SHORT = 'S',
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JAVA_SIGNATURE_VOID = 'V',
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JAVA_SIGNATURE_BOOLEAN = 'Z',
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JAVA_SIGNATURE_UNKNOWN = 0
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} JavaSignatureChar;
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/* The signature of a Java method consists of the signatures of all its
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arguments and its return type signature. */
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typedef struct JavaMethodSignature {
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jsize num_args; /* Length of arg_signatures array */
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JavaSignature ** arg_signatures; /* Array of argument signatures */
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JavaSignature * return_val_signature; /* Return type signature */
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} JavaMethodSignature;
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/* A descriptor for the reflection of a single Java field */
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typedef struct JavaFieldSpec {
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jfieldID fieldID; /* JVM opaque access handle for field */
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JavaSignature * signature; /* Java type of field */
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int modifiers; /* Bitfield indicating field qualifiers */
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const char * name; /* UTF8; TODO - Should support Unicode field names */
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} JavaFieldSpec;
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/* A descriptor for the reflection of a single Java method.
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Each overloaded method has a separate corresponding JavaMethodSpec. */
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struct JavaMethodSpec {
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jmethodID methodID; /* JVM opaque access handle for method */
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JavaMethodSignature signature;
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const char * name; /* UTF8; TODO - Should support Unicode method names */
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JavaMethodSpec * next; /* next method in chain of overloaded methods */
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};
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/*
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* A descriptor for the reflection of a single member of a Java object.
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* This can represent one or more Java methods and/or a single field.
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* (When there is more than one method attached to a single JavaMemberDescriptor
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* they are overloaded methods sharing the same simple name.) This same
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* descriptor type is used for both static or instance members.
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*/
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struct JavaMemberDescriptor {
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const char * name; /* simple name of field and/or method */
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jsid id; /* hashed name for quick JS property lookup */
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JavaFieldSpec * field; /* field with the given name, if any */
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JavaMethodSpec * methods; /* Overloaded methods which share the same name, if any */
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JavaMemberDescriptor * next; /* next descriptor in same defining class */
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JSObject * invoke_func_obj; /* If non-null, JSFunction obj to invoke method */
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};
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/* This is the native portion of a reflected Java class */
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struct JavaClassDescriptor {
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const char * name; /* Name of class, e.g. "java/lang/Byte" */
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JavaSignatureChar type; /* class category: primitive type, object, array */
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jclass java_class; /* Opaque JVM handle to corresponding java.lang.Class */
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int num_instance_members;
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int num_static_members;
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JSBool instance_members_reflected;
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JavaMemberDescriptor * instance_members;
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JSBool static_members_reflected;
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JavaMemberDescriptor * static_members;
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JavaMemberDescriptor * constructors;
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int modifiers; /* Class declaration qualifiers,
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e.g. abstract, private */
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int ref_count; /* # of references to this struct */
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JavaSignature * array_component_signature; /* Only non-NULL for array classes */
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};
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/* This is the native portion of a reflected Java method or field */
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struct JavaMemberVal {
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jsval field_val; /* Captured value of Java field */
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jsval invoke_method_func_val; /* JSFunction wrapper around Java method invoker */
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JavaMemberDescriptor * descriptor;
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JavaMemberVal * next;
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};
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/* This is the native portion of a reflected Java object */
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typedef struct JavaObjectWrapper {
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jobject java_obj; /* Opaque JVM ref to Java object */
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JavaClassDescriptor * class_descriptor; /* Java class info */
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} JavaObjectWrapper;
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/* These are definitions of the Java class/method/field modifier bits.
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These really shouldn't be hard-coded here. Rather,
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they should be read from java.lang.reflect.Modifier */
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#define ACC_PUBLIC 0x0001 /* visible to everyone */
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#define ACC_STATIC 0x0008 /* instance variable is static */
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#define ACC_FINAL 0x0010 /* no further subclassing,overriding */
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#define ACC_INTERFACE 0x0200 /* class is an interface */
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#define ACC_ABSTRACT 0x0400 /* no definition provided */
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/* A JSJavaVM structure must be created for each Java VM that is accessed
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via LiveConnect */
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struct JSJavaVM {
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/* TODO - all LiveConnect global variables should be migrated into this
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structure in order to allow more than one LiveConnect-enabled
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Java VM to exist within the same process. */
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JavaVM * java_vm;
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JNIEnv * main_thread_env; /* Main-thread Java environment */
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JSBool jsj_created_java_vm;
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int num_attached_threads;
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JSJavaVM * next; /* next VM among all created VMs */
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};
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/* Per-thread state that encapsulates the connection to the Java VM */
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struct JSJavaThreadState {
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const char * name; /* Thread name, for debugging */
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JSJavaVM * jsjava_vm; /* All per-JVM state */
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JNIEnv * jEnv; /* Per-thread opaque handle to Java VM */
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CapturedJSError * pending_js_errors; /* JS errors to be thrown as Java exceptions */
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JSContext * cx; /* current JS context for thread */
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JSJavaThreadState * next; /* next thread state among all created threads */
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};
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/******************************** Globals ***********************************/
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extern JSJCallbacks *JSJ_callbacks;
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/* JavaScript classes that reflect Java objects */
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extern JSClass JavaObject_class;
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extern JSClass JavaArray_class;
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extern JSClass JavaClass_class;
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extern JSClass JavaMember_class;
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/*
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* Opaque JVM handles to Java classes, methods and objects required for
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* Java reflection. These are computed and cached during initialization.
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* TODO: These should be moved inside the JSJavaVM struct
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*/
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extern jclass jlObject; /* java.lang.Object */
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extern jclass jlrConstructor; /* java.lang.reflect.Constructor */
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extern jclass jlThrowable; /* java.lang.Throwable */
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extern jclass jlSystem; /* java.lang.System */
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extern jclass jlClass; /* java.lang.Class */
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extern jclass jlBoolean; /* java.lang.Boolean */
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extern jclass jlDouble; /* java.lang.Double */
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extern jclass jlString; /* java.lang.String */
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extern jclass njJSObject; /* netscape.javascript.JSObject */
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extern jclass njJSException; /* netscape.javascript.JSException */
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extern jclass njJSUtil; /* netscape.javascript.JSUtil */
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extern jmethodID jlClass_getMethods; /* java.lang.Class.getMethods() */
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extern jmethodID jlClass_getConstructors; /* java.lang.Class.getConstructors() */
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extern jmethodID jlClass_getFields; /* java.lang.Class.getFields() */
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extern jmethodID jlClass_getName; /* java.lang.Class.getName() */
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extern jmethodID jlClass_getComponentType; /* java.lang.Class.getComponentType() */
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extern jmethodID jlClass_getModifiers; /* java.lang.Class.getModifiers() */
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extern jmethodID jlClass_isArray; /* java.lang.Class.isArray() */
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extern jmethodID jlrMethod_getName; /* java.lang.reflect.Method.getName() */
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extern jmethodID jlrMethod_getParameterTypes; /* java.lang.reflect.Method.getParameterTypes() */
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extern jmethodID jlrMethod_getReturnType; /* java.lang.reflect.Method.getReturnType() */
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extern jmethodID jlrMethod_getModifiers; /* java.lang.reflect.Method.getModifiers() */
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extern jmethodID jlrConstructor_getParameterTypes; /* java.lang.reflect.Constructor.getParameterTypes() */
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extern jmethodID jlrConstructor_getModifiers; /* java.lang.reflect.Constructor.getModifiers() */
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extern jmethodID jlrField_getName; /* java.lang.reflect.Field.getName() */
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extern jmethodID jlrField_getType; /* java.lang.reflect.Field.getType() */
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extern jmethodID jlrField_getModifiers; /* java.lang.reflect.Field.getModifiers() */
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extern jmethodID jlThrowable_getMessage; /* java.lang.Throwable.getMessage() */
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extern jmethodID jlThrowable_toString; /* java.lang.Throwable.toString() */
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extern jmethodID jlBoolean_Boolean; /* java.lang.Boolean constructor */
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extern jmethodID jlBoolean_booleanValue; /* java.lang.Boolean.booleanValue() */
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extern jmethodID jlDouble_Double; /* java.lang.Double constructor */
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extern jmethodID jlDouble_doubleValue; /* java.lang.Double.doubleValue() */
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extern jmethodID jlSystem_identityHashCode; /* java.lang.System.identityHashCode() */
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extern jobject jlVoid_TYPE; /* java.lang.Void.TYPE value */
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extern jmethodID njJSException_JSException; /* netscape.javascipt.JSexception constructor */
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extern jmethodID njJSObject_JSObject; /* netscape.javascript.JSObject constructor */
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extern jmethodID njJSUtil_getStackTrace; /* netscape.javascript.JSUtil.getStackTrace() */
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extern jfieldID njJSObject_internal; /* netscape.javascript.JSObject.internal */
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extern jfieldID njJSException_lineno; /* netscape.javascript.JSException.lineno */
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extern jfieldID njJSException_tokenIndex; /* netscape.javascript.JSException.tokenIndex */
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extern jfieldID njJSException_source; /* netscape.javascript.JSException.source */
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extern jfieldID njJSException_filename; /* netscape.javascript.JSException.filename */
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/**************** Java <==> JS conversions and Java types *******************/
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extern JSBool
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jsj_ComputeJavaClassSignature(JSContext *cx,
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JavaSignature *signature,
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jclass java_class);
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extern const char *
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jsj_ConvertJavaSignatureToString(JSContext *cx, JavaSignature *signature);
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extern const char *
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jsj_ConvertJavaSignatureToHRString(JSContext *cx,
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JavaSignature *signature);
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extern JavaMethodSignature *
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jsj_InitJavaMethodSignature(JSContext *cx, JNIEnv *jEnv, jobject method,
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JavaMethodSignature *method_signature);
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extern const char *
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jsj_ConvertJavaMethodSignatureToString(JSContext *cx,
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JavaMethodSignature *method_signature);
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extern const char *
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jsj_ConvertJavaMethodSignatureToHRString(JSContext *cx,
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const char *method_name,
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JavaMethodSignature *method_signature);
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extern void
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jsj_PurgeJavaMethodSignature(JSContext *cx, JNIEnv *jEnv, JavaMethodSignature *signature);
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extern JSBool
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jsj_ConvertJSValueToJavaValue(JSContext *cx, JNIEnv *jEnv, jsval v, JavaSignature *signature,
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int *cost, jvalue *java_value, JSBool *is_local_refp);
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extern JSBool
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jsj_ConvertJSValueToJavaObject(JSContext *cx, JNIEnv *jEnv, jsval v, JavaSignature *signature,
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int *cost, jobject *java_value, JSBool *is_local_refp);
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extern jstring
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jsj_ConvertJSStringToJavaString(JSContext *cx, JNIEnv *jEnv, JSString *js_str);
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extern JSBool
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jsj_ConvertJavaValueToJSValue(JSContext *cx, JNIEnv *jEnv, JavaSignature *signature,
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jvalue *java_value, jsval *vp);
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extern JSBool
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jsj_ConvertJavaObjectToJSValue(JSContext *cx, JNIEnv *jEnv,
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jobject java_obj, jsval *vp);
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extern JSString *
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jsj_ConvertJavaStringToJSString(JSContext *cx, JNIEnv *jEnv, jstring java_str);
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extern JSBool
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jsj_ConvertJavaObjectToJSString(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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jobject java_obj, jsval *vp);
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extern JSBool
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jsj_ConvertJavaObjectToJSNumber(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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jobject java_obj, jsval *vp);
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extern JSBool
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jsj_ConvertJavaObjectToJSBoolean(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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jobject java_obj, jsval *vp);
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/************************ Java package reflection **************************/
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extern JSBool
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jsj_init_JavaPackage(JSContext *, JSObject *,
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JavaPackageDef *predefined_packages);
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/************************* Java class reflection ***************************/
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extern JSBool
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jsj_init_JavaClass(JSContext *cx, JSObject *global_obj);
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extern void
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jsj_DiscardJavaClassReflections(JNIEnv *jEnv);
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extern const char *
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jsj_GetJavaClassName(JSContext *cx, JNIEnv *jEnv, jclass java_class);
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extern JavaClassDescriptor *
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jsj_GetJavaClassDescriptor(JSContext *cx, JNIEnv *jEnv, jclass java_class);
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extern void
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jsj_ReleaseJavaClassDescriptor(JSContext *cx, JNIEnv *jEnv, JavaClassDescriptor *class_descriptor);
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extern JSObject *
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jsj_define_JavaClass(JSContext *cx, JNIEnv *jEnv, JSObject *obj,
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const char *unqualified_class_name,
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jclass jclazz);
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extern JavaMemberDescriptor *
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jsj_GetJavaMemberDescriptor(JSContext *cx,
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JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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jstring member_name);
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extern JavaMemberDescriptor *
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jsj_LookupJavaMemberDescriptorById(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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jsid id);
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extern JavaMemberDescriptor *
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jsj_LookupJavaStaticMemberDescriptorById(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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jsid id);
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extern JavaMemberDescriptor *
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jsj_GetJavaStaticMemberDescriptor(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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jstring member_name);
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extern JavaMemberDescriptor *
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jsj_GetJavaClassConstructors(JSContext *cx,
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JavaClassDescriptor *class_descriptor);
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extern JavaMemberDescriptor *
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jsj_LookupJavaClassConstructors(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor);
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extern JavaMemberDescriptor *
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jsj_GetClassInstanceMembers(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor);
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extern JavaMemberDescriptor *
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jsj_GetClassStaticMembers(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor);
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extern JSBool
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jsj_InitJavaClassReflectionsTable();
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/************************* Java field reflection ***************************/
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extern JSBool
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jsj_GetJavaFieldValue(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field_spec,
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jobject java_obj, jsval *vp);
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extern JSBool
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jsj_SetJavaFieldValue(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field_spec,
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jobject java_obj, jsval js_val);
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extern JSBool
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jsj_ReflectJavaFields(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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JSBool reflect_only_static_fields);
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extern void
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jsj_DestroyFieldSpec(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field);
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/************************* Java method reflection ***************************/
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extern JSBool
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jsj_JavaInstanceMethodWrapper(JSContext *cx, JSObject *obj,
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uintN argc, jsval *argv, jsval *vp);
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extern JSBool
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jsj_JavaStaticMethodWrapper(JSContext *cx, JSObject *obj,
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uintN argc, jsval *argv, jsval *vp);
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extern JSBool
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jsj_JavaConstructorWrapper(JSContext *cx, JSObject *obj,
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uintN argc, jsval *argv, jsval *vp);
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extern JSBool
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jsj_ReflectJavaMethods(JSContext *cx, JNIEnv *jEnv,
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JavaClassDescriptor *class_descriptor,
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JSBool reflect_only_static_methods);
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extern void
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jsj_DestroyMethodSpec(JSContext *cx, JNIEnv *jEnv, JavaMethodSpec *method_spec);
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/************************* Java member reflection ***************************/
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extern JSBool
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jsj_init_JavaMember(JSContext *, JSObject *);
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extern JSBool
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jsj_ReflectJavaMethodsAndFields(JSContext *cx, JavaClassDescriptor *class_descriptor,
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JSBool reflect_only_statics);
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extern JSObject *
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jsj_CreateJavaMember(JSContext *cx, jsval method_val, jsval field_val);
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/************************* Java object reflection **************************/
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extern JSBool
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jsj_init_JavaObject(JSContext *, JSObject *);
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extern JSObject *
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jsj_WrapJavaObject(JSContext *cx, JNIEnv *jEnv, jobject java_obj, jclass java_class);
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extern void
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jsj_DiscardJavaObjReflections(JNIEnv *jEnv);
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extern JSBool
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JavaObject_convert(JSContext *cx, JSObject *obj, JSType type, jsval *vp);
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extern void
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JavaObject_finalize(JSContext *cx, JSObject *obj);
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extern JSBool
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JavaObject_resolve(JSContext *cx, JSObject *obj, jsval id);
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extern JSBool
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JavaObject_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
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extern JSBool
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JavaObject_getPropertyById(JSContext *cx, JSObject *obj, jsid id, jsval *vp);
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/************************* Java array reflection ***************************/
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extern JSBool
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jsj_init_JavaArray(JSContext *cx, JSObject *global_obj);
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extern JSBool
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jsj_GetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array,
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jsize index, JavaSignature *array_component_signature,
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jsval *vp);
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extern JSBool
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jsj_SetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array,
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jsize index, JavaSignature *array_component_signature,
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jsval js_val);
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/********************* JavaScript object reflection ************************/
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extern jobject
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jsj_WrapJSObject(JSContext *cx, JNIEnv *jEnv, JSObject *js_obj);
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extern JSObject *
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jsj_UnwrapJSObjectWrapper(JNIEnv *jEnv, jobject java_wrapper_obj);
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extern void
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jsj_ClearPendingJSErrors(JSJavaThreadState *jsj_env);
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extern JSBool
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jsj_ReportUncaughtJSException(JSContext *cx, JNIEnv *jEnv, jthrowable java_exception);
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/**************************** Utilities ************************************/
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extern void
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jsj_ReportJavaError(JSContext *cx, JNIEnv *env, const char *format, ...);
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extern void
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jsj_UnexpectedJavaError(JSContext *cx, JNIEnv *env, const char *format, ...);
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extern const char *
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jsj_GetJavaErrorMessage(JNIEnv *env);
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extern void
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jsj_LogError(const char *error_msg);
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extern const JSErrorFormatString *
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jsj_GetErrorMessage(const uintN errorNumber);
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PR_CALLBACK JSJHashNumber
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|
jsj_HashJavaObject(const void *key, void* env);
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PR_CALLBACK intN
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jsj_JavaObjectComparator(const void *v1, const void *v2, void *arg);
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extern JSJavaThreadState *
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|
jsj_MapJavaThreadToJSJavaThreadState(JNIEnv *jEnv, char **errp);
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extern void
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|
jsj_MakeJNIClassname(char *jClassName);
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|
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|
extern const char *
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|
jsj_ClassNameOfJavaObject(JSContext *cx, JNIEnv *jEnv, jobject java_object);
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|
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|
extern jsize
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|
jsj_GetJavaArrayLength(JSContext *cx, JNIEnv *jEnv, jarray java_array);
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|
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|
extern JSBool
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|
JavaStringToId(JSContext *cx, JNIEnv *jEnv, jstring jstr, jsid *idp);
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|
|
|
extern const char *
|
|
jsj_DupJavaStringUTF(JSContext *cx, JNIEnv *jEnv, jstring jstr);
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|
|
|
JSJavaThreadState *
|
|
jsj_MapJSContextToJSJThread(JSContext *cx, JNIEnv **envp);
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|
|
|
#ifdef DEBUG
|
|
#define DEBUG_LOG(args) printf args
|
|
#endif
|
|
|
|
#define JS_FREE_IF(cx, x) \
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|
PR_BEGIN_MACRO \
|
|
if (x) \
|
|
JS_free(cx, x); \
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|
PR_END_MACRO
|
|
|
|
|
|
enum JSJErrNum {
|
|
#define MSG_DEF(name, number, format, count) \
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|
name = number,
|
|
#include "jsj_msg.def"
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|
#undef MSG_DEF
|
|
JSJ_Err_Limit
|
|
#undef MSGDEF
|
|
};
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|
|
|
#endif /* _JSJAVA_PVT_H */
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