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/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2011 INRIA, France Telecom
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.springframework.asm;
/**
* @author Remi Forax
*/
final class ModuleWriter extends ModuleVisitor {
/**
* The class writer to which this Module attribute must be added.
*/
private final ClassWriter cw;
/**
* size in byte of the Module attribute.
*/
int size;
/**
* Number of attributes associated with the current module
* (Version, ConcealPackages, etc)
*/
int attributeCount;
/**
* Size in bytes of the attributes associated with the current module
*/
int attributesSize;
/**
* module name index in the constant pool
*/
private final int name;
/**
* module access flags
*/
private final int access;
/**
* module version index in the constant pool or 0
*/
private final int version;
/**
* module main class index in the constant pool or 0
*/
private int mainClass;
/**
* number of packages
*/
private int packageCount;
/**
* The packages in bytecode form. This byte vector only contains
* the items themselves, the number of items is store in packageCount
*/
private ByteVector packages;
/**
* number of requires items
*/
private int requireCount;
/**
* The requires items in bytecode form. This byte vector only contains
* the items themselves, the number of items is store in requireCount
*/
private ByteVector requires;
/**
* number of exports items
*/
private int exportCount;
/**
* The exports items in bytecode form. This byte vector only contains
* the items themselves, the number of items is store in exportCount
*/
private ByteVector exports;
/**
* number of opens items
*/
private int openCount;
/**
* The opens items in bytecode form. This byte vector only contains
* the items themselves, the number of items is store in openCount
*/
private ByteVector opens;
/**
* number of uses items
*/
private int useCount;
/**
* The uses items in bytecode form. This byte vector only contains
* the items themselves, the number of items is store in useCount
*/
private ByteVector uses;
/**
* number of provides items
*/
private int provideCount;
/**
* The uses provides in bytecode form. This byte vector only contains
* the items themselves, the number of items is store in provideCount
*/
private ByteVector provides;
ModuleWriter(final ClassWriter cw, final int name,
final int access, final int version) {
super(Opcodes.ASM6);
this.cw = cw;
this.size = 16; // name + access + version + 5 counts
this.name = name;
this.access = access;
this.version = version;
}
@Override
public void visitMainClass(String mainClass) {
if (this.mainClass == 0) { // protect against several calls to visitMainClass
cw.newUTF8("ModuleMainClass");
attributeCount++;
attributesSize += 8;
}
this.mainClass = cw.newClass(mainClass);
}
@Override
public void visitPackage(String packaze) {
if (packages == null) {
// protect against several calls to visitPackage
cw.newUTF8("ModulePackages");
packages = new ByteVector();
attributeCount++;
attributesSize += 8;
}
packages.putShort(cw.newPackage(packaze));
packageCount++;
attributesSize += 2;
}
@Override
public void visitRequire(String module, int access, String version) {
if (requires == null) {
requires = new ByteVector();
}
requires.putShort(cw.newModule(module))
.putShort(access)
.putShort(version == null? 0: cw.newUTF8(version));
requireCount++;
size += 6;
}
@Override
public void visitExport(String packaze, int access, String... modules) {
if (exports == null) {
exports = new ByteVector();
}
exports.putShort(cw.newPackage(packaze)).putShort(access);
if (modules == null) {
exports.putShort(0);
size += 6;
} else {
exports.putShort(modules.length);
for(String module: modules) {
exports.putShort(cw.newModule(module));
}
size += 6 + 2 * modules.length;
}
exportCount++;
}
@Override
public void visitOpen(String packaze, int access, String... modules) {
if (opens == null) {
opens = new ByteVector();
}
opens.putShort(cw.newPackage(packaze)).putShort(access);
if (modules == null) {
opens.putShort(0);
size += 6;
} else {
opens.putShort(modules.length);
for(String module: modules) {
opens.putShort(cw.newModule(module));
}
size += 6 + 2 * modules.length;
}
openCount++;
}
@Override
public void visitUse(String service) {
if (uses == null) {
uses = new ByteVector();
}
uses.putShort(cw.newClass(service));
useCount++;
size += 2;
}
@Override
public void visitProvide(String service, String... providers) {
if (provides == null) {
provides = new ByteVector();
}
provides.putShort(cw.newClass(service));
provides.putShort(providers.length);
for(String provider: providers) {
provides.putShort(cw.newClass(provider));
}
provideCount++;
size += 4 + 2 * providers.length;
}
@Override
public void visitEnd() {
// empty
}
void putAttributes(ByteVector out) {
if (mainClass != 0) {
out.putShort(cw.newUTF8("ModuleMainClass")).putInt(2).putShort(mainClass);
}
if (packages != null) {
out.putShort(cw.newUTF8("ModulePackages"))
.putInt(2 + 2 * packageCount)
.putShort(packageCount)
.putByteArray(packages.data, 0, packages.length);
}
}
void put(ByteVector out) {
out.putInt(size);
out.putShort(name).putShort(access).putShort(version);
out.putShort(requireCount);
if (requires != null) {
out.putByteArray(requires.data, 0, requires.length);
}
out.putShort(exportCount);
if (exports != null) {
out.putByteArray(exports.data, 0, exports.length);
}
out.putShort(openCount);
if (opens != null) {
out.putByteArray(opens.data, 0, opens.length);
}
out.putShort(useCount);
if (uses != null) {
out.putByteArray(uses.data, 0, uses.length);
}
out.putShort(provideCount);
if (provides != null) {
out.putByteArray(provides.data, 0, provides.length);
}
}
}
