duktape-1.5.2/src-separate/duk_json.h

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/*
 *  Defines for JSON, especially duk_bi_json.c.
 */
 
#ifndef DUK_JSON_H_INCLUDED
#define DUK_JSON_H_INCLUDED
 
/* Encoding/decoding flags */
#define DUK_JSON_FLAG_ASCII_ONLY              (1 << 0)  /* escape any non-ASCII characters */
#define DUK_JSON_FLAG_AVOID_KEY_QUOTES        (1 << 1)  /* avoid key quotes when key is an ASCII Identifier */
#define DUK_JSON_FLAG_EXT_CUSTOM              (1 << 2)  /* extended types: custom encoding */
#define DUK_JSON_FLAG_EXT_COMPATIBLE          (1 << 3)  /* extended types: compatible encoding */
 
/* How much stack to require on entry to object/array encode */
#define DUK_JSON_ENC_REQSTACK                 32
 
/* How much stack to require on entry to object/array decode */
#define DUK_JSON_DEC_REQSTACK                 32
 
/* How large a loop detection stack to use */
#define DUK_JSON_ENC_LOOPARRAY                64
 
/* Encoding state.  Heap object references are all borrowed. */
typedef struct {
    duk_hthread *thr;
    duk_bufwriter_ctx bw;        /* output bufwriter */
    duk_hobject *h_replacer;     /* replacer function */
    duk_hstring *h_gap;          /* gap (if empty string, NULL) */
    duk_idx_t idx_proplist;      /* explicit PropertyList */
    duk_idx_t idx_loop;          /* valstack index of loop detection object */
    duk_small_uint_t flags;
    duk_small_uint_t flag_ascii_only;
    duk_small_uint_t flag_avoid_key_quotes;
#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
    duk_small_uint_t flag_ext_custom;
    duk_small_uint_t flag_ext_compatible;
    duk_small_uint_t flag_ext_custom_or_compatible;
#endif
    duk_int_t recursion_depth;
    duk_int_t recursion_limit;
    duk_uint_t mask_for_undefined;      /* type bit mask: types which certainly produce 'undefined' */
#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
    duk_small_uint_t stridx_custom_undefined;
    duk_small_uint_t stridx_custom_nan;
    duk_small_uint_t stridx_custom_neginf;
    duk_small_uint_t stridx_custom_posinf;
    duk_small_uint_t stridx_custom_function;
#endif
    duk_hobject *visiting[DUK_JSON_ENC_LOOPARRAY];  /* indexed by recursion_depth */
} duk_json_enc_ctx;
 
typedef struct {
    duk_hthread *thr;
    const duk_uint8_t *p;
    const duk_uint8_t *p_start;
    const duk_uint8_t *p_end;
    duk_idx_t idx_reviver;
    duk_small_uint_t flags;
#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
    duk_small_uint_t flag_ext_custom;
    duk_small_uint_t flag_ext_compatible;
    duk_small_uint_t flag_ext_custom_or_compatible;
#endif
    duk_int_t recursion_depth;
    duk_int_t recursion_limit;
} duk_json_dec_ctx;
 
#endif  /* DUK_JSON_H_INCLUDED */