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				|  |  | +/*
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				|  |  | + *
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				|  |  | + * Copyright 2014, Google Inc.
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				|  |  | + * All rights reserved.
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				|  |  | + *
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				|  |  | + * Redistribution and use in source and binary forms, with or without
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				|  |  | + * modification, are permitted provided that the following conditions are
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				|  |  | + * met:
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				|  |  | + *
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				|  |  | + *     * Redistributions of source code must retain the above copyright
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				|  |  | + * notice, this list of conditions and the following disclaimer.
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				|  |  | + *     * Redistributions in binary form must reproduce the above
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				|  |  | + * copyright notice, this list of conditions and the following disclaimer
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				|  |  | + * in the documentation and/or other materials provided with the
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				|  |  | + * distribution.
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				|  |  | + *     * Neither the name of Google Inc. nor the names of its
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				|  |  | + * contributors may be used to endorse or promote products derived from
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				|  |  | + * this software without specific prior written permission.
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				|  |  | + *
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				|  |  | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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				|  |  | + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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				|  |  | + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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				|  |  | + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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				|  |  | + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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				|  |  | + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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				|  |  | + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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				|  |  | + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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				|  |  | + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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				|  |  | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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				|  |  | + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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				|  |  | + *
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				|  |  | + */
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				|  |  | +
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				|  |  | +#include <stdio.h>
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				|  |  | +#include <stdlib.h>
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				|  |  | +
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				|  |  | +#include <grpc/support/alloc.h>
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				|  |  | +#include <grpc/support/useful.h>
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				|  |  | +#include <grpc/support/log.h>
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				|  |  | +#include "test/core/util/test_config.h"
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				|  |  | +
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				|  |  | +#include "src/core/json/json_reader.h"
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				|  |  | +#include "src/core/json/json_writer.h"
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				|  |  | +
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				|  |  | +typedef struct json_writer_userdata {
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				|  |  | +  FILE* cmp;
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				|  |  | +} json_writer_userdata;
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				|  |  | +
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				|  |  | +typedef struct stacked_container {
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				|  |  | +  grpc_json_type type;
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				|  |  | +  struct stacked_container* next;
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				|  |  | +} stacked_container;
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				|  |  | +
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				|  |  | +typedef struct json_reader_userdata {
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				|  |  | +  FILE* in;
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				|  |  | +  grpc_json_writer* writer;
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				|  |  | +  char* scratchpad;
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				|  |  | +  char* ptr;
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				|  |  | +  size_t free_space;
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				|  |  | +  size_t allocated;
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				|  |  | +  size_t string_len;
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				|  |  | +  stacked_container* top;
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				|  |  | +  int did_eagain;
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				|  |  | +} json_reader_userdata;
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				|  |  | +
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				|  |  | +static void json_writer_output_char(void* userdata, char c) {
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				|  |  | +  json_writer_userdata* state = userdata;
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				|  |  | +  int cmp = fgetc(state->cmp);
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				|  |  | +  GPR_ASSERT(cmp == c);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_writer_output_string(void* userdata, const char* str) {
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				|  |  | +  while (*str) {
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				|  |  | +    json_writer_output_char(userdata, *str++);
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				|  |  | +  }
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_writer_output_string_with_len(void* userdata, const char* str,
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				|  |  | +                                               size_t len) {
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				|  |  | +  size_t i;
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				|  |  | +  for (i = 0; i < len; i++) {
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				|  |  | +    json_writer_output_char(userdata, str[i]);
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				|  |  | +  }
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				|  |  | +}
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				|  |  | +
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				|  |  | +grpc_json_writer_vtable writer_vtable = {
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				|  |  | +  json_writer_output_char,
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				|  |  | +  json_writer_output_string,
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				|  |  | +  json_writer_output_string_with_len
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				|  |  | +};
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				|  |  | +
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				|  |  | +static void check_string(json_reader_userdata* state, size_t needed) {
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				|  |  | +  if (state->free_space >= needed) return;
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				|  |  | +  needed -= state->free_space;
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				|  |  | +  needed = (needed + 0xff) & ~0xff;
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				|  |  | +  state->scratchpad = gpr_realloc(state->scratchpad, state->allocated + needed);
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				|  |  | +  state->free_space += needed;
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				|  |  | +  state->allocated += needed;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_string_clear(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +  state->free_space = state->allocated;
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				|  |  | +  state->string_len = 0;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_string_add_char(void* userdata, gpr_uint32 c) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +  check_string(state, 1);
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				|  |  | +  state->scratchpad[state->string_len++] = c;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_string_add_utf32(void* userdata, gpr_uint32 c) {
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				|  |  | +  if (c <= 0x7f) {
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				|  |  | +    json_reader_string_add_char(userdata, c);
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				|  |  | +  } else if (c <= 0x7ff) {
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				|  |  | +    int b1 = 0xc0 | ((c >> 6) & 0x1f);
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				|  |  | +    int b2 = 0x80 | (c & 0x3f);
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				|  |  | +    json_reader_string_add_char(userdata, b1);
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				|  |  | +    json_reader_string_add_char(userdata, b2);
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				|  |  | +  } else if (c <= 0xffff) {
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				|  |  | +    int b1 = 0xe0 | ((c >> 12) & 0x0f);
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				|  |  | +    int b2 = 0x80 | ((c >> 6) & 0x3f);
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				|  |  | +    int b3 = 0x80 | (c & 0x3f);
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				|  |  | +    json_reader_string_add_char(userdata, b1);
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				|  |  | +    json_reader_string_add_char(userdata, b2);
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				|  |  | +    json_reader_string_add_char(userdata, b3);
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				|  |  | +  } else if (c <= 0x1fffff) {
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				|  |  | +    int b1 = 0xf0 | ((c >> 18) & 0x07);
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				|  |  | +    int b2 = 0x80 | ((c >> 12) & 0x3f);
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				|  |  | +    int b3 = 0x80 | ((c >> 6) & 0x3f);
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				|  |  | +    int b4 = 0x80 | (c & 0x3f);
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				|  |  | +    json_reader_string_add_char(userdata, b1);
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				|  |  | +    json_reader_string_add_char(userdata, b2);
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				|  |  | +    json_reader_string_add_char(userdata, b3);
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				|  |  | +    json_reader_string_add_char(userdata, b4);
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				|  |  | +  }
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				|  |  | +}
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				|  |  | +
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				|  |  | +static gpr_uint32 json_reader_read_char(void* userdata) {
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				|  |  | +  gpr_uint32 r;
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +
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				|  |  | +  if (!state->did_eagain) {
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				|  |  | +    state->did_eagain = 1;
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				|  |  | +    return GRPC_JSON_READ_CHAR_EAGAIN;
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  state->did_eagain = 0;
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				|  |  | +
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				|  |  | +  r = fgetc(state->in);
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				|  |  | +  if (r == EOF) r = GRPC_JSON_READ_CHAR_EOF;
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				|  |  | +  return r;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_container_begins(void* userdata, grpc_json_type type) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +  stacked_container* container = gpr_malloc(sizeof(stacked_container));
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				|  |  | +
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				|  |  | +  container->type = type;
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				|  |  | +  container->next = state->top;
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				|  |  | +  state->top = container;
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				|  |  | +
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				|  |  | +  grpc_json_writer_container_begins(state->writer, type);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static grpc_json_type json_reader_container_ends(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +  stacked_container* container = state->top;
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				|  |  | +
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				|  |  | +  grpc_json_writer_container_ends(state->writer, container->type);
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				|  |  | +  state->top = container->next;
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				|  |  | +  gpr_free(container);
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				|  |  | +  return state->top ? state->top->type : GRPC_JSON_TOP_LEVEL;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_set_key(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +  json_reader_string_add_char(userdata, 0);
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				|  |  | +
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				|  |  | +  grpc_json_writer_object_key(state->writer, state->scratchpad);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_set_string(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +  json_reader_string_add_char(userdata, 0);
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				|  |  | +
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				|  |  | +  grpc_json_writer_value_string(state->writer, state->scratchpad);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static int json_reader_set_number(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +
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				|  |  | +  grpc_json_writer_value_raw_with_len(state->writer, state->scratchpad,
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				|  |  | +                                      state->string_len);
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				|  |  | +
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				|  |  | +  return 1;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_set_true(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +
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				|  |  | +  grpc_json_writer_value_raw_with_len(state->writer, "true", 4);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_set_false(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +
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				|  |  | +  grpc_json_writer_value_raw_with_len(state->writer, "false", 5);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void json_reader_set_null(void* userdata) {
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				|  |  | +  json_reader_userdata* state = userdata;
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				|  |  | +
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				|  |  | +  grpc_json_writer_value_raw_with_len(state->writer, "null", 4);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static grpc_json_reader_vtable reader_vtable = {
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				|  |  | +  json_reader_string_clear,
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				|  |  | +  json_reader_string_add_char,
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				|  |  | +  json_reader_string_add_utf32,
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				|  |  | +  json_reader_read_char,
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				|  |  | +  json_reader_container_begins,
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				|  |  | +  json_reader_container_ends,
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				|  |  | +  json_reader_set_key,
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				|  |  | +  json_reader_set_string,
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				|  |  | +  json_reader_set_number,
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				|  |  | +  json_reader_set_true,
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				|  |  | +  json_reader_set_false,
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				|  |  | +  json_reader_set_null
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				|  |  | +};
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				|  |  | +
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				|  |  | +int rewrite_and_compare(FILE* in, FILE* cmp, int indent) {
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				|  |  | +  grpc_json_writer writer;
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				|  |  | +  grpc_json_reader reader;
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				|  |  | +  grpc_json_reader_status status;
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				|  |  | +  json_writer_userdata writer_user;
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				|  |  | +  json_reader_userdata reader_user;
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				|  |  | +
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				|  |  | +  GPR_ASSERT(in);
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				|  |  | +  GPR_ASSERT(cmp);
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				|  |  | +
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				|  |  | +  reader_user.writer = &writer;
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				|  |  | +  reader_user.in = in;
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				|  |  | +  reader_user.top = NULL;
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				|  |  | +  reader_user.scratchpad = NULL;
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				|  |  | +  reader_user.string_len = 0;
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				|  |  | +  reader_user.free_space = 0;
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				|  |  | +  reader_user.allocated = 0;
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				|  |  | +  reader_user.did_eagain = 0;
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				|  |  | +
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				|  |  | +  writer_user.cmp = cmp;
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				|  |  | +
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				|  |  | +  grpc_json_writer_init(&writer, indent, &writer_vtable, &writer_user);
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				|  |  | +  grpc_json_reader_init(&reader, &reader_vtable, &reader_user);
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				|  |  | +
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				|  |  | +  do {
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				|  |  | +    status = grpc_json_reader_run(&reader);
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				|  |  | +  } while (status == GRPC_JSON_EAGAIN);
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				|  |  | +
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				|  |  | +  free(reader_user.scratchpad);
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				|  |  | +  while (reader_user.top) {
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				|  |  | +    stacked_container* container = reader_user.top;
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				|  |  | +    reader_user.top = container->next;
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				|  |  | +    free(container);
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  return status == GRPC_JSON_DONE;
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				|  |  | +}
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				|  |  | +
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				|  |  | +typedef struct test_file {
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				|  |  | +  const char* input;
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				|  |  | +  const char* cmp;
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				|  |  | +  int indent;
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				|  |  | +} test_file;
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				|  |  | +
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				|  |  | +static test_file test_files[] = {
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				|  |  | +  {
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				|  |  | +    "test/core/json/rewrite_test_input.json",
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				|  |  | +    "test/core/json/rewrite_test_output_condensed.json",
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				|  |  | +    0
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				|  |  | +  },
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				|  |  | +  {
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				|  |  | +    "test/core/json/rewrite_test_input.json",
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				|  |  | +    "test/core/json/rewrite_test_output_indented.json",
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				|  |  | +    2
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				|  |  | +  },
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				|  |  | +  {
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				|  |  | +    "test/core/json/rewrite_test_output_indented.json",
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				|  |  | +    "test/core/json/rewrite_test_output_condensed.json",
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				|  |  | +    0
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				|  |  | +  },
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				|  |  | +  {
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				|  |  | +    "test/core/json/rewrite_test_output_condensed.json",
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				|  |  | +    "test/core/json/rewrite_test_output_indented.json",
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				|  |  | +    2
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				|  |  | +  },
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				|  |  | +};
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				|  |  | +
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				|  |  | +void test_rewrites() {
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				|  |  | +  int i;
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				|  |  | +
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				|  |  | +  for (i = 0; i < GPR_ARRAY_SIZE(test_files); i++) {
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				|  |  | +    test_file* test = test_files + i;
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				|  |  | +    FILE* input = fopen(test->input, "rb");
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				|  |  | +    FILE* cmp = fopen(test->cmp, "rb");
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				|  |  | +    int status;
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				|  |  | +    gpr_log(GPR_INFO, "Testing file %s against %s using indent=%i",
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				|  |  | +            test->input, test->cmp, test->indent);
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				|  |  | +    status = rewrite_and_compare(input, cmp, test->indent);
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				|  |  | +    GPR_ASSERT(status);
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				|  |  | +    fclose(input);
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				|  |  | +    fclose(cmp);
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				|  |  | +  }
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				|  |  | +}
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				|  |  | +
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				|  |  | +int main(int argc, char** argv) {
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				|  |  | +  grpc_test_init(argc, argv);
 | 
	
		
			
				|  |  | +  test_rewrites();
 | 
	
		
			
				|  |  | +  gpr_log(GPR_INFO, "json_rewrite_test success");
 | 
	
		
			
				|  |  | +  return 0;
 | 
	
		
			
				|  |  | +}
 |