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 "include/core/SkTypes.h" 12 13 #include <cstdarg> 14 #include <cstddef> 15 #include <cstdint> 16 #include <string> 17 18 namespace SkSL { 19 20 class OutputStream { 21 public: isValid()22 virtual bool isValid() const { 23 return true; 24 } 25 26 virtual void write8(uint8_t b) = 0; 27 write16(uint16_t i)28 void write16(uint16_t i) { 29 this->write8((uint8_t) i); 30 this->write8((uint8_t) (i >> 8)); 31 } 32 write32(uint32_t i)33 void write32(uint32_t i) { 34 this->write8((uint8_t) i); 35 this->write8((uint8_t) (i >> 8)); 36 this->write8((uint8_t) (i >> 16)); 37 this->write8((uint8_t) (i >> 24)); 38 } 39 40 virtual void writeText(const char* s) = 0; 41 42 virtual void write(const void* s, size_t size) = 0; 43 44 void writeString(const std::string& s); 45 46 void printf(const char format[], ...) SK_PRINTF_LIKE(2, 3); 47 48 void appendVAList(const char format[], va_list args) SK_PRINTF_LIKE(2, 0); 49 ~OutputStream()50 virtual ~OutputStream() {} 51 52 private: 53 static const int kBufferSize = 1024; 54 }; 55 56 } // namespace SkSL 57 58 #endif 59