mirror of
https://github.com/corda/corda.git
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87b02eb949
Previously, I used a shell script to extract modification date ranges from the Git history, but that was complicated and unreliable, so now every file just gets the same year range in its copyright header. If someone needs to know when a specific file was modified and by whom, they can look at the Git history themselves; no need to include it redundantly in the header.
114 lines
2.0 KiB
C++
114 lines
2.0 KiB
C++
/* Copyright (c) 2008-2013, Avian Contributors
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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There is NO WARRANTY for this software. See license.txt for
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details. */
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#ifndef STREAM_H
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#define STREAM_H
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#include "avian/common.h"
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namespace vm {
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class AbstractStream {
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public:
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class Client {
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public:
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virtual void handleError() = 0;
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};
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AbstractStream(Client* client, unsigned size):
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client(client), size(size), position_(0)
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{ }
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unsigned position() {
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return position_;
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}
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void setPosition(unsigned p) {
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position_ = p;
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}
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void skip(unsigned size) {
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if (size > this->size - position_) {
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client->handleError();
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} else {
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position_ += size;
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}
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}
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void read(uint8_t* dst, unsigned size) {
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if (size > this->size - position_) {
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memset(dst, 0, size);
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client->handleError();
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} else {
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copy(dst, position_, size);
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position_ += size;
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}
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}
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uint8_t read1() {
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uint8_t v;
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read(&v, 1);
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return v;
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}
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uint16_t read2() {
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uint16_t a = read1();
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uint16_t b = read1();
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return (a << 8) | b;
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}
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uint32_t read4() {
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uint32_t a = read2();
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uint32_t b = read2();
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return (a << 16) | b;
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}
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uint64_t read8() {
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uint64_t a = read4();
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uint64_t b = read4();
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return (a << 32) | b;
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}
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uint32_t readFloat() {
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return read4();
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}
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uint64_t readDouble() {
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return read8();
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}
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protected:
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virtual void copy(uint8_t* dst, unsigned offset, unsigned size) = 0;
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private:
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Client* client;
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unsigned size;
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unsigned position_;
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};
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class Stream: public AbstractStream {
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public:
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Stream(Client* client, const uint8_t* data, unsigned size):
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AbstractStream(client, size), data(data)
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{ }
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private:
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virtual void copy(uint8_t* dst, unsigned offset, unsigned size) {
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memcpy(dst, data + offset, size);
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}
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const uint8_t* data;
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};
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} // namespace vm
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#endif//STREAM_H
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