| #ifndef DUK_NUMCONV_H_INCLUDED |
| #define DUK_NUMCONV_H_INCLUDED |
| |
| /* |
| * Number-to-string conversion. The semantics of these is very tightly |
| * bound with the Ecmascript semantics required for call sites. |
| */ |
| |
| /* Output a specified number of digits instead of using the shortest |
| * form. Used for toPrecision() and toFixed(). |
| */ |
| #define DUK_N2S_FLAG_FIXED_FORMAT (1 << 0) |
| |
| /* Force exponential format. Used for toExponential(). */ |
| #define DUK_N2S_FLAG_FORCE_EXP (1 << 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 (1 << 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 (1 << 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. |
| */ |
| #define DUK_S2N_MAX_EXPONENT 1000000000 |
| |
| /* Trim white space (= allow leading and trailing whitespace) */ |
| #define DUK_S2N_FLAG_TRIM_WHITE (1 << 0) |
| |
| /* Allow exponent */ |
| #define DUK_S2N_FLAG_ALLOW_EXP (1 << 1) |
| |
| /* Allow trailing garbage (e.g. treat "123foo" as "123) */ |
| #define DUK_S2N_FLAG_ALLOW_GARBAGE (1 << 2) |
| |
| /* Allow leading plus sign */ |
| #define DUK_S2N_FLAG_ALLOW_PLUS (1 << 3) |
| |
| /* Allow leading minus sign */ |
| #define DUK_S2N_FLAG_ALLOW_MINUS (1 << 4) |
| |
| /* Allow 'Infinity' */ |
| #define DUK_S2N_FLAG_ALLOW_INF (1 << 5) |
| |
| /* Allow fraction part */ |
| #define DUK_S2N_FLAG_ALLOW_FRAC (1 << 6) |
| |
| /* Allow naked fraction (e.g. ".123") */ |
| #define DUK_S2N_FLAG_ALLOW_NAKED_FRAC (1 << 7) |
| |
| /* Allow empty fraction (e.g. "123.") */ |
| #define DUK_S2N_FLAG_ALLOW_EMPTY_FRAC (1 << 8) |
| |
| /* Allow empty string to be interpreted as 0 */ |
| #define DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO (1 << 9) |
| |
| /* Allow leading zeroes (e.g. "0123" -> "123") */ |
| #define DUK_S2N_FLAG_ALLOW_LEADING_ZERO (1 << 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 (1 << 11) |
| |
| /* Allow automatic detection of octal base, overrides radix |
| * argument and forces integer mode. |
| */ |
| #define DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT (1 << 12) |
| |
| /* |
| * Prototypes |
| */ |
| |
| DUK_INTERNAL_DECL void duk_numconv_stringify(duk_context *ctx, duk_small_int_t radix, duk_small_int_t digits, duk_small_uint_t flags); |
| DUK_INTERNAL_DECL void duk_numconv_parse(duk_context *ctx, duk_small_int_t radix, duk_small_uint_t flags); |
| |
| #endif /* DUK_NUMCONV_H_INCLUDED */ |
