From 0110717f5e6c2a4ec202501f3d086afeed69029b Mon Sep 17 00:00:00 2001 From: daurnimator Date: Thu, 18 Jan 2018 05:28:21 +1100 Subject: src/llex.js: Use destructuring assignment for defs.js --- src/llex.js | 53 +++++++++++++++++++++++++++-------------------------- 1 file changed, 27 insertions(+), 26 deletions(-) (limited to 'src/llex.js') diff --git a/src/llex.js b/src/llex.js index 1e3f15b..a838158 100644 --- a/src/llex.js +++ b/src/llex.js @@ -1,6 +1,11 @@ "use strict"; -const defs = require('./defs.js'); +const { + constant_types: { LUA_TLNGSTR }, + char, + thread_status: { LUA_ERRSYNTAX }, + to_luastring +} = require('./defs.js'); const { lua_assert } = require('./llimits.js'); const ldebug = require('./ldebug.js'); const ldo = require('./ldo.js'); @@ -11,13 +16,9 @@ const ltable = require('./ltable.js'); const llimits = require('./llimits.js'); const lzio = require('./lzio.js'); -const {LUA_TLNGSTR} = defs.constant_types; -const char = defs.char; -const TS = defs.thread_status; - const FIRST_RESERVED = 257; -const LUA_ENV = defs.to_luastring("_ENV", true); +const LUA_ENV = to_luastring("_ENV", true); const RESERVED = { /* terminal symbols denoted by reserved words */ @@ -112,7 +113,7 @@ const save = function(ls, c) { let b = ls.buff; if (b.n + 1 > b.buffer.length) { if (b.buffer.length >= llimits.MAX_INT/2) - lexerror(ls, defs.to_luastring("lexical element too long", true), 0); + lexerror(ls, to_luastring("lexical element too long", true), 0); let newsize = b.buffer.length*2; lzio.luaZ_resizebuffer(ls.L, b, newsize); } @@ -121,13 +122,13 @@ const save = function(ls, c) { const luaX_token2str = function(ls, token) { if (token < FIRST_RESERVED) { /* single-byte symbols? */ - return lobject.luaO_pushfstring(ls.L, defs.to_luastring("'%c'", true), token); + return lobject.luaO_pushfstring(ls.L, to_luastring("'%c'", true), token); } else { let s = luaX_tokens[token - FIRST_RESERVED]; if (token < R.TK_EOS) /* fixed format (symbols and reserved words)? */ - return lobject.luaO_pushfstring(ls.L, defs.to_luastring("'%s'", true), defs.to_luastring(s)); + return lobject.luaO_pushfstring(ls.L, to_luastring("'%s'", true), to_luastring(s)); else /* names, strings, and numerals */ - return defs.to_luastring(s); + return to_luastring(s); } }; @@ -175,7 +176,7 @@ const inclinenumber = function(ls) { if (currIsNewline(ls) && ls.current !== old) next(ls); /* skip '\n\r' or '\r\n' */ if (++ls.linenumber >= llimits.MAX_INT) - lexerror(ls, defs.to_luastring("chunk has too many lines", true), 0); + lexerror(ls, to_luastring("chunk has too many lines", true), 0); }; const luaX_setinput = function(L, ls, z, source, firstchar) { @@ -242,7 +243,7 @@ const read_numeral = function(ls, seminfo) { let obj = new lobject.TValue(); if (lobject.luaO_str2num(lzio.luaZ_buffer(ls.buff), obj) === 0) /* format error? */ - lexerror(ls, defs.to_luastring("malformed number", true), R.TK_FLT); + lexerror(ls, to_luastring("malformed number", true), R.TK_FLT); if (obj.ttisinteger()) { seminfo.i = obj.value; return R.TK_INT; @@ -258,7 +259,7 @@ const txtToken = function(ls, token) { case R.TK_NAME: case R.TK_STRING: case R.TK_FLT: case R.TK_INT: // save(ls, 0); - return lobject.luaO_pushfstring(ls.L, defs.to_luastring("'%s'", true), lzio.luaZ_buffer(ls.buff)); + return lobject.luaO_pushfstring(ls.L, to_luastring("'%s'", true), lzio.luaZ_buffer(ls.buff)); default: return luaX_token2str(ls, token); } @@ -267,8 +268,8 @@ const txtToken = function(ls, token) { const lexerror = function(ls, msg, token) { msg = ldebug.luaG_addinfo(ls.L, msg, ls.source, ls.linenumber); if (token) - lobject.luaO_pushfstring(ls.L, defs.to_luastring("%s near %s"), msg, txtToken(ls, token)); - ldo.luaD_throw(ls.L, TS.LUA_ERRSYNTAX); + lobject.luaO_pushfstring(ls.L, to_luastring("%s near %s"), msg, txtToken(ls, token)); + ldo.luaD_throw(ls.L, LUA_ERRSYNTAX); }; const luaX_syntaxerror = function(ls, msg) { @@ -305,7 +306,7 @@ const read_long_string = function(ls, seminfo, sep) { case lzio.EOZ: { /* error */ let what = seminfo ? "string" : "comment"; let msg = `unfinished long ${what} (starting at line ${line})`; - lexerror(ls, defs.to_luastring(msg), R.TK_EOS); + lexerror(ls, to_luastring(msg), R.TK_EOS); break; } case char[']']: { @@ -342,7 +343,7 @@ const esccheck = function(ls, c, msg) { const gethexa = function(ls) { save_and_next(ls); - esccheck(ls, ljstype.lisxdigit(ls.current), defs.to_luastring("hexadecimal digit expected", true)); + esccheck(ls, ljstype.lisxdigit(ls.current), to_luastring("hexadecimal digit expected", true)); return lobject.luaO_hexavalue(ls.current); }; @@ -356,17 +357,17 @@ const readhexaesc = function(ls) { const readutf8desc = function(ls) { let i = 4; /* chars to be removed: '\', 'u', '{', and first digit */ save_and_next(ls); /* skip 'u' */ - esccheck(ls, ls.current === char['{'], defs.to_luastring("missing '{'", true)); + esccheck(ls, ls.current === char['{'], to_luastring("missing '{'", true)); let r = gethexa(ls); /* must have at least one digit */ save_and_next(ls); while (ljstype.lisxdigit(ls.current)) { i++; r = (r << 4) + lobject.luaO_hexavalue(ls.current); - esccheck(ls, r <= 0x10FFFF, defs.to_luastring("UTF-8 value too large", true)); + esccheck(ls, r <= 0x10FFFF, to_luastring("UTF-8 value too large", true)); save_and_next(ls); } - esccheck(ls, ls.current === char['}'], defs.to_luastring("missing '}'", true)); + esccheck(ls, ls.current === char['}'], to_luastring("missing '}'", true)); next(ls); /* skip '}' */ lzio.luaZ_buffremove(ls.buff, i); /* remove saved chars from buffer */ return r; @@ -386,7 +387,7 @@ const readdecesc = function(ls) { r = 10 * r + ls.current - char['0']; save_and_next(ls); } - esccheck(ls, r <= 255, defs.to_luastring("decimal escape too large", true)); + esccheck(ls, r <= 255, to_luastring("decimal escape too large", true)); lzio.luaZ_buffremove(ls.buff, i); /* remove read digits from buffer */ return r; }; @@ -397,11 +398,11 @@ const read_string = function(ls, del, seminfo) { while (ls.current !== del) { switch (ls.current) { case lzio.EOZ: - lexerror(ls, defs.to_luastring("unfinished string", true), R.TK_EOS); + lexerror(ls, to_luastring("unfinished string", true), R.TK_EOS); break; case char['\n']: case char['\r']: - lexerror(ls, defs.to_luastring("unfinished string", true), R.TK_STRING); + lexerror(ls, to_luastring("unfinished string", true), R.TK_STRING); break; case char['\\']: { /* escape sequences */ save_and_next(ls); /* keep '\\' for error messages */ @@ -432,7 +433,7 @@ const read_string = function(ls, del, seminfo) { will = 'no_save'; break; } default: { - esccheck(ls, ljstype.lisdigit(ls.current), defs.to_luastring("invalid escape sequence", true)); + esccheck(ls, ljstype.lisdigit(ls.current), to_luastring("invalid escape sequence", true)); c = readdecesc(ls); /* digital escape '\ddd' */ will = 'only_save'; break; } @@ -458,7 +459,7 @@ const read_string = function(ls, del, seminfo) { }; const token_to_index = Object.create(null); /* don't want to return true for e.g. 'hasOwnProperty' */ -luaX_tokens.forEach((e, i)=>token_to_index[lstring.luaS_hash(defs.to_luastring(e))] = i); +luaX_tokens.forEach((e, i)=>token_to_index[lstring.luaS_hash(to_luastring(e))] = i); const isreserved = function(w) { let kidx = token_to_index[lstring.luaS_hashlongstr(w)]; @@ -504,7 +505,7 @@ const llex = function(ls, seminfo) { read_long_string(ls, seminfo, sep); return R.TK_STRING; } else if (sep !== -1) /* '[=...' missing second bracket */ - lexerror(ls, defs.to_luastring("invalid long string delimiter", true), R.TK_STRING); + lexerror(ls, to_luastring("invalid long string delimiter", true), R.TK_STRING); return char['[']; } case char['=']: { -- cgit v1.2.3-54-g00ecf