/*
 * upb - a minimalist implementation of protocol buffers.
 *
 * Copyright (c) 2009 Joshua Haberman.  See LICENSE for details.
 */

#include <inttypes.h>
#include "upb_text.h"
#include "descriptor.h"

void upb_text_printval(upb_field_type_t type, union upb_value val, FILE *file)
{
#define CASE(fmtstr, member) fprintf(file, fmtstr, val.member); break;
  switch(type) {
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_DOUBLE:
      CASE("%0.f", _double);
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FLOAT:
      CASE("%0.f", _float)
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT64:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED64:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT64:
      CASE("%" PRId64, int64)
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_UINT64:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FIXED64:
      CASE("%" PRIu64, uint64)
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT32:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED32:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT32:
      CASE("%" PRId32, int32)
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_UINT32:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FIXED32:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_ENUM:
      CASE("%" PRIu32, uint32);
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BOOL:
      CASE("%hhu", _bool);
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_STRING:
    case GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BYTES:
      /* TODO: escaping. */
      fprintf(file, "\"" UPB_STRFMT "\"", UPB_STRARG(val.str)); break;
  }
}

static void print_indent(struct upb_text_printer *p, FILE *stream)
{
  if(!p->single_line)
    for(int i = 0; i < p->indent_depth; i++)
      fprintf(stream, "  ");
}

void upb_text_printfield(struct upb_text_printer *p,
                         struct upb_string *name,
                         upb_field_type_t valtype, union upb_value val,
                         FILE *stream)
{
  print_indent(p, stream);
  fprintf(stream, UPB_STRFMT ":", UPB_STRARG(name));
  upb_text_printval(valtype, val, stream);
  if(p->single_line)
    fputc(' ', stream);
  else
    fputc('\n', stream);
}

void upb_text_push(struct upb_text_printer *p,
                   struct upb_string *submsg_type,
                   FILE *stream)
{
  print_indent(p, stream);
  fprintf(stream, UPB_STRFMT " {", UPB_STRARG(submsg_type));
  if(!p->single_line) fputc('\n', stream);
  p->indent_depth++;
}

void upb_text_pop(struct upb_text_printer *p,
                  FILE *stream)
{
  p->indent_depth--;
  print_indent(p, stream);
  fprintf(stream, "}\n");
}