diff options
Diffstat (limited to 'src/lobject.js')
| -rw-r--r-- | src/lobject.js | 39 |
1 files changed, 20 insertions, 19 deletions
diff --git a/src/lobject.js b/src/lobject.js index e958975..b2cffe3 100644 --- a/src/lobject.js +++ b/src/lobject.js @@ -8,6 +8,7 @@ const lua = require('./lua.js'); const luaconf = require('./luaconf.js'); const CT = lua.constant_types; const UpVal = require('./lfunc.js').UpVal; +const char = lua.char; let tvalueCount = 0; @@ -291,13 +292,13 @@ const luaO_chunkid = function(source, bufflen) { bufflen = bufflen instanceof TValue ? bufflen.value : bufflen; let l = source.length; let out = []; - if (source[0] === '='.charCodeAt(0)) { /* 'literal' source */ + if (source[0] === char['=']) { /* 'literal' source */ if (l < bufflen) /* small enough? */ out = source.slice(1); else { /* truncate it */ out = out.concat(source.slice(1, bufflen)); } - } else if (source[0] === '@'.charCodeAt(0)) { /* file name */ + } else if (source[0] === char['@']) { /* file name */ if (l <= bufflen) /* small enough? */ out = source.slice(1); else { /* add '...' before rest of name */ @@ -323,8 +324,8 @@ const luaO_chunkid = function(source, bufflen) { }; const luaO_hexavalue = function(c) { - if (ljstype.lisdigit(c)) return c - '0'.charCodeAt(0); - else return (String.fromCharCode(c).toLowerCase().charCodeAt(0) - 'a'.charCodeAt(0)) + 10; + if (ljstype.lisdigit(c)) return c - char['0']; + else return (String.fromCharCode(c).toLowerCase().charCodeAt(0) - char['a']) + 10; }; const UTF8BUFFSZ = 8; @@ -379,7 +380,7 @@ const ldexp = function(mantissa, exponent) { ** C99 specification for 'strtod' */ const lua_strx2number = function(s) { - let dot = luaconf.lua_getlocaledecpoint(); + let dot = char[luaconf.lua_getlocaledecpoint()]; let r = 0.0; /* result (accumulator) */ let sigdig = 0; /* number of significant digits */ let nosigdig = 0; /* number of non-significant digits */ @@ -387,11 +388,11 @@ const lua_strx2number = function(s) { let neg; /* 1 if number is negative */ let hasdot = false; /* true after seen a dot */ - while (ljstype.lisspace(s)) s = s.slice(1); /* skip initial spaces */ + while (ljstype.lisspace(s[0])) s = s.slice(1); /* skip initial spaces */ - neg = s[0] === '-'.charCodeAt(0); /* check signal */ - s = neg || s[0] === '+'.charCodeAt(0) ? s.slice(1) : s; /* skip sign if one */ - if (!(s[0] === '0' && (s[1] === 'x'.charCodeAt(0) || s[1] === 'X'.charCodeAt(0)))) /* check '0x' */ + neg = s[0] === char['-']; /* check signal */ + s = neg || s[0] === char['+'] ? s.slice(1) : s; /* skip sign if one */ + if (!(s[0] === char['0'] && (s[1] === char['x'] || s[1] === char['X']))) /* check '0x' */ return 0.0; /* invalid format (no '0x') */ for (s = s.slice(2); ; s = s.slice(1)) { /* skip '0x' and read numeral */ @@ -399,10 +400,10 @@ const lua_strx2number = function(s) { if (hasdot) break; /* second dot? stop loop */ else hasdot = true; } else if (ljstype.lisxdigit(s[0])) { - if (sigdig === 0 && s[0] === '0'.charCodeAt(0)) /* non-significant digit (zero)? */ + if (sigdig === 0 && s[0] === char['0']) /* non-significant digit (zero)? */ nosigdig++; else if (++sigdig <= MAXSIGDIG) /* can read it without overflow? */ - r = (r * 16) + luaO_hexavalue(s); + r = (r * 16) + luaO_hexavalue(s[0]); else e++; /* too many digits; ignore, but still count for exponent */ if (hasdot) e--; /* decimal digit? correct exponent */ } else break; /* neither a dot nor a digit */ @@ -411,16 +412,16 @@ const lua_strx2number = function(s) { if (nosigdig + sigdig === 0) /* no digits? */ return 0.0; /* invalid format */ e *= 4; /* each digit multiplies/divides value by 2^4 */ - if (s[0] === 'p'.charCodeAt(0) || s[0] === 'P'.charCodeAt(0)) { /* exponent part? */ + if (s[0] === char['p'] || s[0] === char['P']) { /* exponent part? */ let exp1 = 0; /* exponent value */ let neg1; /* exponent signal */ s = s.slice(1); /* skip 'p' */ - neg1 = s[0] === '-'.charCodeAt(0); /* check signal */ - s = neg1 || s[0] === '+'.charCodeAt(0) ? s.slice(1) : s; /* skip sign if one */ + neg1 = s[0] === char['-']; /* check signal */ + s = neg1 || s[0] === char['+'] ? s.slice(1) : s; /* skip sign if one */ if (!ljstype.lisdigit(s[0])) return 0.0; /* invalid; must have at least one digit */ while (ljstype.lisdigit(s[0])) { /* read exponent */ - exp1 = exp1 * 10 + s - '0'.charCodeAt(0); + exp1 = exp1 * 10 + s[0] - char['0']; s = s.slice(1); } if (neg1) exp1 = -exp1; @@ -458,12 +459,12 @@ const l_str2int = function(s) { let neg; while (ljstype.lisspace(s[0])) s = s.slice(1); /* skip initial spaces */ - neg = s[0] === '-'.charCodeAt(0); + neg = s[0] === char['-']; - if (neg || s[0] === '+'.charCodeAt(0)) + if (neg || s[0] === char['+']) s = s.slice(1); - if (s[0] === '0'.charCodeAt(0) && (s[1] === 'x'.charCodeAt(0) || s[1] === 'X'.charCodeAt(0))) { /* hex? */ + if (s[0] === char['0'] && (s[1] === char['x'] || s[1] === char['X'])) { /* hex? */ s = s.slice(2); /* skip '0x' */ for (; ljstype.lisxdigit(s[0]); s = s.slice(1)) { @@ -472,7 +473,7 @@ const l_str2int = function(s) { } } else { /* decimal */ for (; ljstype.lisdigit(s[0]); s = s.slice(1)) { - let d = s[0] - '0'.charCodeAt(0); + let d = s[0] - char['0']; if (a >= MAXBY10 && (a > MAXBY10 || d > MAXLASTD + neg)) /* overflow? */ return null; /* do not accept it (as integer) */ a = a * 10 + d; |