File size: 11,887 Bytes
305a42c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 | #include "json-partial.h"
#include "log.h"
#include <nlohmann/json.hpp>
#include <string>
using json = nlohmann::ordered_json;
enum common_json_stack_element_type {
COMMON_JSON_STACK_ELEMENT_OBJECT,
COMMON_JSON_STACK_ELEMENT_KEY,
COMMON_JSON_STACK_ELEMENT_ARRAY,
};
struct common_json_stack_element {
common_json_stack_element_type type;
std::string key;
};
bool common_json_parse(
const std::string & input,
const std::string & healing_marker,
common_json & out)
{
std::string::const_iterator it = input.begin();
const auto end = input.end();
return common_json_parse(it, end, healing_marker, out);
}
bool common_json_parse(
std::string::const_iterator & it,
const std::string::const_iterator & end,
const std::string & healing_marker,
common_json & out)
{
// // https://json.nlohmann.me/features/parsing/sax_interface/
struct json_error_locator : public nlohmann::json_sax<json> {
std::size_t position;
bool found_error;
std::string last_token;
std::string exception_message;
std::vector<common_json_stack_element> stack;
json_error_locator() : position(0), found_error(false) {}
bool parse_error(std::size_t position, const std::string & last_token, const json::exception & ex) override { // NOLINT
this->position = position - 1;
this->found_error = true;
this->last_token = last_token;
this->exception_message = ex.what();
return false;
}
void close_value() {
if (!stack.empty() && (stack.back().type == COMMON_JSON_STACK_ELEMENT_KEY)) {
stack.pop_back();
}
}
bool null() override { // NOLINT
close_value();
return true;
}
bool boolean(bool) override { // NOLINT
close_value();
return true;
}
bool number_integer(number_integer_t) override { // NOLINT
close_value();
return true;
}
bool number_unsigned(number_unsigned_t) override { // NOLINT
close_value();
return true;
}
bool number_float(number_float_t, const string_t &) override { // NOLINT
close_value();
return true;
}
bool string(string_t &) override { // NOLINT
close_value();
return true;
}
bool binary(binary_t &) override { // NOLINT
close_value();
return true;
}
bool start_object(std::size_t) override { // NOLINT
stack.push_back({COMMON_JSON_STACK_ELEMENT_OBJECT, ""});
return true;
}
bool end_object() override {
GGML_ASSERT(!stack.empty() && stack.back().type == COMMON_JSON_STACK_ELEMENT_OBJECT);
stack.pop_back();
close_value();
return true;
}
bool key(string_t & key) override { // NOLINT
stack.push_back({COMMON_JSON_STACK_ELEMENT_KEY, key});
return true;
}
bool start_array(std::size_t) override { // NOLINT
stack.push_back({COMMON_JSON_STACK_ELEMENT_ARRAY, ""});
return true;
}
bool end_array() override {
GGML_ASSERT(!stack.empty() && stack.back().type == COMMON_JSON_STACK_ELEMENT_ARRAY);
stack.pop_back();
close_value();
return true;
}
};
json_error_locator err_loc;
auto start = it;
json::sax_parse(it, end, &err_loc);
if (err_loc.found_error) {
it = start;
auto temptative_end = it + err_loc.position;
// LOG_DBG("Error at position %zu (is_end = %s): %s\n", err_loc.position, temptative_end == end ? "true" : "false", err_loc.exception_message.c_str());
auto input = std::string(it, temptative_end);
try {
out.json = json::parse(input);
// out.json = json::parse(it, temptative_end);
it = temptative_end;
return true;
} catch (const std::exception & ex) {
// No, needs healing.
LOG_DBG("Failed to parse up to error: %s: <<<%s>>>\n", ex.what(), std::string(it, temptative_end).c_str());
}
auto can_parse = [](const std::string & str) {
try {
auto _ = json::parse(str); // NOLINT
return true;
} catch (const std::exception &) {
return false;
}
};
if (!healing_marker.empty() && !err_loc.stack.empty()) {
std::string str(it, temptative_end);
auto last_non_sp_pos = str.find_last_not_of(" \n\r\t");
if (last_non_sp_pos == std::string::npos) {
throw std::runtime_error("Cannot heal a truncated JSON that stopped in an unknown location");
}
auto last_non_sp_char = str[last_non_sp_pos];
// Used to detect stops on a number, which may not be complete.
auto was_maybe_number = [&]() {
if (!str.empty() && std::isspace(str.back())) {
return false;
}
return std::isdigit(last_non_sp_char) ||
last_non_sp_char == '.' ||
last_non_sp_char == 'e' ||
last_non_sp_char == 'E' ||
last_non_sp_char == '-';
};
std::string closing;
for (size_t i = err_loc.stack.size(); i > 0; i--) {
auto & el = err_loc.stack[i - 1];
if (el.type == COMMON_JSON_STACK_ELEMENT_OBJECT) {
closing += "}";
} else if (el.type == COMMON_JSON_STACK_ELEMENT_ARRAY) {
closing += "]";
} else if (el.type != COMMON_JSON_STACK_ELEMENT_KEY) {
throw std::runtime_error("Unexpected stack element type");
}
}
const auto & magic_seed = out.healing_marker.marker = healing_marker;//"$llama.cpp.json$";
if (err_loc.stack.back().type == COMMON_JSON_STACK_ELEMENT_KEY) {
// We're inside an object value
if (last_non_sp_char == ':' && can_parse(str + "1" + closing)) {
// Was about to create an object value
str += (out.healing_marker.json_dump_marker = "\"" + magic_seed) + "\"" + closing;
} else if (can_parse(str + ": 1" + closing)) {
str += (out.healing_marker.json_dump_marker = ":\"" + magic_seed) + "\"" + closing;
} else if (last_non_sp_char == '{' && can_parse(str + closing)) {
// Was about to create an object
str += (out.healing_marker.json_dump_marker = "\"" + magic_seed) + "\": 1" + closing;
} else if (can_parse(str + "\"" + closing)) {
// Was inside an object value string
str += (out.healing_marker.json_dump_marker = magic_seed) + "\"" + closing;
} else if (str[str.length() - 1] == '\\' && can_parse(str + "\\\"" + closing)) {
// Was inside an object value string after an escape
str += (out.healing_marker.json_dump_marker = "\\" + magic_seed) + "\"" + closing;
} else {
// find last :
auto last_pos = str.find_last_of(':');
if (last_pos == std::string::npos) {
throw std::runtime_error("Cannot heal a truncated JSON that stopped in an unknown location");
}
// Cutting back to opening : for object value
str = str.substr(0, last_pos + 1) + (out.healing_marker.json_dump_marker = "\"" + magic_seed) + "\"" + closing;
}
} else if (err_loc.stack.back().type == COMMON_JSON_STACK_ELEMENT_ARRAY) {
if ((last_non_sp_char == ',' || last_non_sp_char == '[') && can_parse(str + "1" + closing)) {
// Was about to create an array value
str += (out.healing_marker.json_dump_marker = "\"" + magic_seed) + "\"" + closing;
} else if (can_parse(str + "\"" + closing)) {
// Was inside an array value string
str += (out.healing_marker.json_dump_marker = magic_seed) + "\"" + closing;
} else if (str[str.length() - 1] == '\\' && can_parse(str + "\\\"" + closing)) {
// Was inside an array value string after an escape
str += (out.healing_marker.json_dump_marker = "\\" + magic_seed) + "\"" + closing;
} else if (!was_maybe_number() && can_parse(str + ", 1" + closing)) {
// Had just finished a value
str += (out.healing_marker.json_dump_marker = ",\"" + magic_seed) + "\"" + closing;
} else {
auto last_pos = str.find_last_of("[,");
if (last_pos == std::string::npos) {
throw std::runtime_error("Cannot heal a truncated JSON array stopped in an unknown location");
}
// Cutting back to last [ or , for array value
str = str.substr(0, last_pos + 1) + (out.healing_marker.json_dump_marker = "\"" + magic_seed) + "\"" + closing;
}
} else if (err_loc.stack.back().type == COMMON_JSON_STACK_ELEMENT_OBJECT) {
if ((last_non_sp_char == '{' && can_parse(str + closing)) ||
(last_non_sp_char == ',' && can_parse(str + "\"\": 1" + closing))) {
// Was about to create an object key+value
str += (out.healing_marker.json_dump_marker = "\"" + magic_seed) + "\": 1" + closing;
} else if (!was_maybe_number() && can_parse(str + ",\"\": 1" + closing)) {
// Was about to create an object key+value
str += (out.healing_marker.json_dump_marker = ",\"" + magic_seed) + "\": 1" + closing;
} else if (can_parse(str + "\": 1" + closing)) {
// Was inside an object key string
str += (out.healing_marker.json_dump_marker = magic_seed) + "\": 1" + closing;
} else if (str[str.length() - 1] == '\\' && can_parse(str + "\\\": 1" + closing)) {
// Was inside an object key string after an escape
str += (out.healing_marker.json_dump_marker = "\\" + magic_seed) + "\": 1" + closing;
} else {
auto last_pos = str.find_last_of(':');
if (last_pos == std::string::npos) {
throw std::runtime_error("Cannot heal a truncated JSON object stopped in an unknown location");
}
// fprintf(stderr, "Cutting back to last : for object key+value\n");
str = str.substr(0, last_pos + 1) + (out.healing_marker.json_dump_marker = "\"" + magic_seed) + "\"" + closing;
}
} else {
throw std::runtime_error("Cannot heal a truncated JSON object stopped in an unknown location");
}
// fprintf(stderr, "HEALED:\nSTRING <<<\n%s\n>>>\n\nmagic_cut: <<<\n%s\n>>>\n\n", str.c_str(), out.healing_marker.json_dump_marker.c_str());
out.json = json::parse(str);
it = temptative_end;
return true;
}
// TODO: handle unclosed top-level primitive if the stack was empty but we got an error (e.g. "tru", "\"", etc...)
// fprintf(stderr, "Closing: TODO\n");
return false;
}
out.json = json::parse(it, end);
it = end;
return true;
}
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