1/*
2 * Copyright 2017 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SKSL_OUTPUTSTREAM
9#define SKSL_OUTPUTSTREAM
10
11#include "src/sksl/SkSLDefines.h"
12#include "src/sksl/SkSLString.h"
13
14namespace SkSL {
15
16class OutputStream {
17public:
18 virtual bool isValid() const {
19 return true;
20 }
21
22 virtual void write8(uint8_t b) = 0;
23
24 void write16(uint16_t i) {
25 this->write8((uint8_t) i);
26 this->write8((uint8_t) (i >> 8));
27 }
28
29 void write32(uint32_t i) {
30 this->write8((uint8_t) i);
31 this->write8((uint8_t) (i >> 8));
32 this->write8((uint8_t) (i >> 16));
33 this->write8((uint8_t) (i >> 24));
34 }
35
36 virtual void writeText(const char* s) = 0;
37
38 virtual void write(const void* s, size_t size) = 0;
39
40 void writeString(String s);
41
42 void printf(const char format[], ...) SKSL_PRINTF_LIKE(2, 3);
43
44 void appendVAList(const char format[], va_list args);
45
46 virtual ~OutputStream() {}
47
48private:
49 static const int kBufferSize = 1024;
50};
51
52} // namespace SkSL
53
54#endif
55