118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
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#ifndef JSON_CHECKER_H
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#define JSON_CHECKER_H
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/* JSON_checker.h */
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#include <stddef.h>
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/* Windows DLL stuff */
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#ifdef _WIN32
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# ifdef JSON_CHECKER_DLL_EXPORTS
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# define JSON_CHECKER_DLL_API __declspec(dllexport)
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# else
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# define JSON_CHECKER_DLL_API __declspec(dllimport)
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# endif
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#else
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# define JSON_CHECKER_DLL_API
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#endif
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/* Determine the integer type use to parse non-floating point numbers */
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#if __STDC_VERSION__ >= 199901L || HAVE_LONG_LONG == 1
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typedef long long JSON_int_t;
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#define JSON_CHECKER_INTEGER_SSCANF_TOKEN "%lld"
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#define JSON_CHECKER_INTEGER_SPRINTF_TOKEN "%lld"
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#else
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typedef long JSON_int_t;
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#define JSON_CHECKER_INTEGER_SSCANF_TOKEN "%ld"
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#define JSON_CHECKER_INTEGER_SPRINTF_TOKEN "%ld"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum
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{
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JSON_T_NONE = 0,
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JSON_T_ARRAY_BEGIN,
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JSON_T_ARRAY_END,
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JSON_T_OBJECT_BEGIN,
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JSON_T_OBJECT_END,
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JSON_T_INTEGER,
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JSON_T_FLOAT,
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JSON_T_NULL,
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JSON_T_TRUE,
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JSON_T_FALSE,
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JSON_T_STRING,
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JSON_T_KEY,
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} JSON_type;
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typedef struct JSON_value_struct {
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union {
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JSON_int_t integer_value;
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long double float_value;
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struct {
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const char* string_value;
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size_t string_length;
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};
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};
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} JSON_value;
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/*! \brief JSON parser callback
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\param ctx The pointer passed to new_JSON_checker.
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\param type An element of JSON_type but not JSON_T_NONE.
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\param value A representation of the parsed value. This parameter is NULL for
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JSON_T_ARRAY_BEGIN, JSON_T_ARRAY_END, JSON_T_OBJECT_BEGIN, JSON_T_OBJECT_END,
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JSON_T_NULL, JSON_T_TRUE, and SON_T_FALSE.
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\return Non-zero if parsing should continue, else zero.
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*/
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typedef int (JSON_checker_callback)(void* ctx, int type, const struct JSON_value_struct* value);
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/*! \brief Create a JSON parser object
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\param depth If negative, the parser can parse arbitrary levels of JSON, otherwise
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the depth is the limit
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\param Pointer to a callback. This parameter may be NULL.
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\param Callback context. This parameter may be NULL.
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\return The parser object.
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*/
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JSON_CHECKER_DLL_API extern struct JSON_checker_struct* new_JSON_checker(int depth, JSON_checker_callback*, void* ctx, int allowComments);
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/*! \brief Destroy a previously created JSON parser object. */
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JSON_CHECKER_DLL_API extern void delete_JSON_checker(struct JSON_checker_struct* jc);
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/*! \brief Parse a character.
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\return Non-zero, if all characters passed to this function are part of are valid JSON.
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*/
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JSON_CHECKER_DLL_API extern int JSON_checker_char(struct JSON_checker_struct* jc, int next_char);
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/*! \brief Finalize parsing.
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Call this method once after all input characters have been consumed.
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\return Non-zero, if all parsed characters are valid JSON, zero otherwise.
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*/
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JSON_CHECKER_DLL_API extern int JSON_checker_done(struct JSON_checker_struct* jc);
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/*! \brief Determine if a given string is valid JSON white space
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\return Non-zero if the string is valid, zero otherwise.
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*/
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JSON_CHECKER_DLL_API extern int JSON_checker_is_legal_white_space_string(const char* s);
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#ifdef __cplusplus
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}
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#endif
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#endif /* JSON_CHECKER_H */
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