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      1 
      2 /* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
      3  * written by Walter Bright
      4  * https://www.digitalmars.com
      5  * Distributed under the Boost Software License, Version 1.0.
      6  * https://www.boost.org/LICENSE_1_0.txt
      7  * https://github.com/dlang/dmd/blob/master/src/dmd/common/outbuffer.h
      8  */
      9 
     10 #pragma once
     11 
     12 #include "../root/dsystem.h"
     13 #include "../root/dcompat.h"
     14 #include "../root/rmem.h"
     15 
     16 class RootObject;
     17 
     18 struct OutBuffer
     19 {
     20     // IMPORTANT: PLEASE KEEP STATE AND DESTRUCTOR IN SYNC WITH DEFINITION IN ./outbuffer.d.
     21 private:
     22     DArray<unsigned char> data;
     23     d_size_t offset;
     24     bool notlinehead;
     25     void *fileMapping;  // pointer to a file mapping object not used on the C++ side
     26 public:
     27     bool doindent;
     28     bool spaces;
     29     int level;
     30 
     31     OutBuffer()
     32     {
     33         data = DArray<unsigned char>();
     34         offset = 0;
     35 
     36         doindent = 0;
     37         level = 0;
     38         notlinehead = 0;
     39         fileMapping = 0;
     40     }
     41     ~OutBuffer()
     42     {
     43         mem.xfree(data.ptr);
     44     }
     45     d_size_t length() const { return offset; }
     46     char *extractData();
     47     void destroy();
     48 
     49     void reserve(d_size_t nbytes);
     50     void setsize(d_size_t size);
     51     void reset();
     52     void write(const void *data, d_size_t nbytes);
     53     void writestring(const char *string);
     54     void prependstring(const char *string);
     55     void writenl();                     // write newline
     56     void writeByte(unsigned b);
     57     void writeUTF8(unsigned b);
     58     void prependbyte(unsigned b);
     59     void writewchar(unsigned w);
     60     void writeword(unsigned w);
     61     void writeUTF16(unsigned w);
     62     void write4(unsigned w);
     63     void write(const OutBuffer *buf);
     64     void write(RootObject *obj);
     65     void fill0(d_size_t nbytes);
     66     void vprintf(const char *format, va_list args);
     67     void printf(const char *format, ...);
     68     void bracket(char left, char right);
     69     d_size_t bracket(d_size_t i, const char *left, d_size_t j, const char *right);
     70     void spread(d_size_t offset, d_size_t nbytes);
     71     d_size_t insert(d_size_t offset, const void *data, d_size_t nbytes);
     72     void remove(d_size_t offset, d_size_t nbytes);
     73     // Append terminating null if necessary and get view of internal buffer
     74     char *peekChars();
     75     // Append terminating null if necessary and take ownership of data
     76     char *extractChars();
     77 };
     78