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codeparrot

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#include <usual/cxextra.h>
#include <usual/cbtree.h>
#include <usual/misc.h>
#include <usual/utf8.h>
#include <usual/ctype.h>
#include <usual/bytemap.h>
#include <usual/string.h>
#include <math.h>
#define TYPE_BITS 3
#define TYPE_MASK ((1 << TYPE_BITS) - 1)
#define UNATTACHED ((struct JsonValue *)(1 << TYPE_BITS))
#define JSON_MAX_KEY (1024*1024)
#define NUMBER_BUF 100
#define JSON_MAXINT ((1LL << 53) - 1)
#define JSON_MININT (-(1LL << 53) + 1)
/*
* Common struct for all JSON values
*/
struct JsonValue {
/* actual value for simple types */
union {
double v_float; /* float */
int64_t v_int; /* int */
bool v_bool; /* bool */
size_t v_size; /* str/list/dict */
} u;
/* pointer to next elem and type in low bits */
uintptr_t v_next_and_type;
};
/*
* List container.
*/
struct ValueList {
struct JsonValue *first;
struct JsonValue *last;
struct JsonValue **array;
};
/*
* Extra data for list/dict.
*/
struct JsonContainer {
/* parent container */
struct JsonValue *c_parent;
/* main context for child alloc */
struct JsonContext *c_ctx;
/* child elements */
union {
struct CBTree *c_dict;
struct ValueList c_list;
} u;
};
#define DICT_EXTRA (offsetof(struct JsonContainer, u.c_dict) + sizeof(struct CBTree *))
#define LIST_EXTRA (sizeof(struct JsonContainer))
/*
* Allocation context.
*/
struct JsonContext {
CxMem *pool;
unsigned int options;
/* parse state */
struct JsonValue *parent;
struct JsonValue *cur_key;
struct JsonValue *top;
const char *lasterr;
char errbuf[128];
int64_t linenr;
};
struct RenderState {
struct MBuf *dst;
unsigned int options;
};
/*
* Parser states
*/
enum ParseState {
S_INITIAL_VALUE = 1,
S_LIST_VALUE,
S_LIST_VALUE_OR_CLOSE,
S_LIST_COMMA_OR_CLOSE,
S_DICT_KEY,
S_DICT_KEY_OR_CLOSE,
S_DICT_COLON,
S_DICT_VALUE,
S_DICT_COMMA_OR_CLOSE,
S_PARENT,