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/*
* Number-to-string conversion. The semantics of these is very tightly
* bound with the ECMAScript semantics required for call sites.
*/
#if !defined(DUK_NUMCONV_H_INCLUDED)
#define DUK_NUMCONV_H_INCLUDED
/* Output a specified number of digits instead of using the shortest
* form. Used for toPrecision() and toFixed().
*/
#define DUK_N2S_FLAG_FIXED_FORMAT (1U << 0)
/* Force exponential format. Used for toExponential(). */
#define DUK_N2S_FLAG_FORCE_EXP (1U << 1)
/* If number would need zero padding (for whole number part), use
* exponential format instead. E.g. if input number is 12300, 3
* digits are generated ("123"), output "1.23e+4" instead of "12300".
* Used for toPrecision().
*/
#define DUK_N2S_FLAG_NO_ZERO_PAD (1U << 2)
/* Digit count indicates number of fractions (i.e. an absolute
* digit index instead of a relative one). Used together with
* DUK_N2S_FLAG_FIXED_FORMAT for toFixed().
*/
#define DUK_N2S_FLAG_FRACTION_DIGITS (1U << 3)
/*
* String-to-number conversion
*/
/* Maximum exponent value when parsing numbers. This is not strictly
* compliant as there should be no upper limit, but as we parse the
* exponent without a bigint, impose some limit. The limit should be
* small enough that multiplying it (or limit-1 to be precise) won't
* overflow signed 32-bit integer range. Exponent is only parsed with
* radix 10, but with maximum radix (36) a safe limit is:
* (10000000*36).toString(16) -> '15752a00'
*/
#define DUK_S2N_MAX_EXPONENT 10000000L
/* Trim white space (= allow leading and trailing whitespace) */
#define DUK_S2N_FLAG_TRIM_WHITE (1U << 0)
/* Allow exponent */
#define DUK_S2N_FLAG_ALLOW_EXP (1U << 1)
/* Allow trailing garbage (e.g. treat "123foo" as "123) */
#define DUK_S2N_FLAG_ALLOW_GARBAGE (1U << 2)
/* Allow leading plus sign */
#define DUK_S2N_FLAG_ALLOW_PLUS (1U << 3)
/* Allow leading minus sign */
#define DUK_S2N_FLAG_ALLOW_MINUS (1U << 4)
/* Allow 'Infinity' */
#define DUK_S2N_FLAG_ALLOW_INF (1U << 5)
/* Allow fraction part */
#define DUK_S2N_FLAG_ALLOW_FRAC (1U << 6)
/* Allow naked fraction (e.g. ".123") */
#define DUK_S2N_FLAG_ALLOW_NAKED_FRAC (1U << 7)
/* Allow empty fraction (e.g. "123.") */
#define DUK_S2N_FLAG_ALLOW_EMPTY_FRAC (1U << 8)
/* Allow empty string to be interpreted as 0 */
#define DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO (1U << 9)
/* Allow leading zeroes (e.g. "0123" -> "123") */
#define DUK_S2N_FLAG_ALLOW_LEADING_ZERO (1U << 10)
/* Allow automatic detection of hex base ("0x" or "0X" prefix),
* overrides radix argument and forces integer mode.
*/
#define DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT (1U << 11)
/* Allow automatic detection of legacy octal base ("0n"),
* overrides radix argument and forces integer mode.
*/
#define DUK_S2N_FLAG_ALLOW_AUTO_LEGACY_OCT_INT (1U << 12)
/* Allow automatic detection of ES2015 octal base ("0o123"),
* overrides radix argument and forces integer mode.
*/
#define DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT (1U << 13)
/* Allow automatic detection of ES2015 binary base ("0b10001"),
* overrides radix argument and forces integer mode.
*/
#define DUK_S2N_FLAG_ALLOW_AUTO_BIN_INT (1U << 14)
/*
* Prototypes
*/
DUK_INTERNAL_DECL void duk_numconv_stringify(duk_hthread *thr,
duk_small_int_t radix,
duk_small_int_t digits,
duk_small_uint_t flags);
DUK_INTERNAL_DECL void duk_numconv_parse(duk_hthread *thr, duk_small_int_t radix, duk_small_uint_t flags);
#endif /* DUK_NUMCONV_H_INCLUDED */
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