95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
/*
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* Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "incls/_precompiled.incl"
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#include "incls/_classFileStream.cpp.incl"
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void ClassFileStream::truncated_file_error(TRAPS) {
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THROW_MSG(vmSymbols::java_lang_ClassFormatError(), "Truncated class file");
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}
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ClassFileStream::ClassFileStream(u1* buffer, int length, char* source) {
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_buffer_start = buffer;
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_buffer_end = buffer + length;
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_current = buffer;
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_source = source;
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_need_verify = false;
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}
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u1 ClassFileStream::get_u1(TRAPS) {
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if (_need_verify) {
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guarantee_more(1, CHECK_0);
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} else {
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assert(1 <= _buffer_end - _current, "buffer overflow");
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}
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return *_current++;
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}
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u2 ClassFileStream::get_u2(TRAPS) {
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if (_need_verify) {
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guarantee_more(2, CHECK_0);
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} else {
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assert(2 <= _buffer_end - _current, "buffer overflow");
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}
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u1* tmp = _current;
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_current += 2;
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return Bytes::get_Java_u2(tmp);
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}
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u4 ClassFileStream::get_u4(TRAPS) {
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if (_need_verify) {
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guarantee_more(4, CHECK_0);
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} else {
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assert(4 <= _buffer_end - _current, "buffer overflow");
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}
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u1* tmp = _current;
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_current += 4;
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return Bytes::get_Java_u4(tmp);
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}
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u8 ClassFileStream::get_u8(TRAPS) {
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if (_need_verify) {
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guarantee_more(8, CHECK_0);
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} else {
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assert(8 <= _buffer_end - _current, "buffer overflow");
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}
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u1* tmp = _current;
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_current += 8;
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return Bytes::get_Java_u8(tmp);
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}
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void ClassFileStream::skip_u1(int length, TRAPS) {
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if (_need_verify) {
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guarantee_more(length, CHECK);
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}
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_current += length;
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}
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void ClassFileStream::skip_u2(int length, TRAPS) {
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if (_need_verify) {
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guarantee_more(length * 2, CHECK);
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}
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_current += length * 2;
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}
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