diff options
Diffstat (limited to 'src/lcorolib.js')
| -rw-r--r-- | src/lcorolib.js | 134 |
1 files changed, 83 insertions, 51 deletions
diff --git a/src/lcorolib.js b/src/lcorolib.js index bcdae8b..eb402b8 100644 --- a/src/lcorolib.js +++ b/src/lcorolib.js @@ -1,112 +1,144 @@ "use strict"; -const lua = require('./lua.js'); -const lauxlib = require('./lauxlib.js'); -const {to_luastring} = require("./fengaricore.js"); +const { + LUA_OK, + LUA_TFUNCTION, + LUA_TSTRING, + LUA_YIELD, + lua_Debug, + lua_checkstack, + lua_concat, + lua_error, + lua_getstack, + lua_gettop, + lua_insert, + lua_isyieldable, + lua_newthread, + lua_pop, + lua_pushboolean, + lua_pushcclosure, + lua_pushliteral, + lua_pushthread, + lua_pushvalue, + lua_resume, + lua_status, + lua_tothread, + lua_type, + lua_upvalueindex, + lua_xmove, + lua_yield +} = require('./lua.js'); +const { + luaL_argcheck, + luaL_checktype, + luaL_newlib, + luaL_where +} = require('./lauxlib.js'); +const { to_luastring } = require("./fengaricore.js"); const getco = function(L) { - let co = lua.lua_tothread(L, 1); - lauxlib.luaL_argcheck(L, co, 1, to_luastring("thread expected", true)); + let co = lua_tothread(L, 1); + luaL_argcheck(L, co, 1, to_luastring("thread expected", true)); return co; }; const auxresume = function(L, co, narg) { - if (!lua.lua_checkstack(co, narg)) { - lua.lua_pushliteral(L, "too many arguments to resume"); + if (!lua_checkstack(co, narg)) { + lua_pushliteral(L, "too many arguments to resume"); return -1; /* error flag */ } - if (lua.lua_status(co) === lua.LUA_OK && lua.lua_gettop(co) === 0) { - lua.lua_pushliteral(L, "cannot resume dead coroutine"); + if (lua_status(co) === LUA_OK && lua_gettop(co) === 0) { + lua_pushliteral(L, "cannot resume dead coroutine"); return -1; /* error flag */ } - lua.lua_xmove(L, co, narg); - let status = lua.lua_resume(co, L, narg); - if (status === lua.LUA_OK || status === lua.LUA_YIELD) { - let nres = lua.lua_gettop(co); - if (!lua.lua_checkstack(L, nres + 1)) { - lua.lua_pop(co, nres); /* remove results anyway */ - lua.lua_pushliteral(L, "too many results to resume"); + lua_xmove(L, co, narg); + let status = lua_resume(co, L, narg); + if (status === LUA_OK || status === LUA_YIELD) { + let nres = lua_gettop(co); + if (!lua_checkstack(L, nres + 1)) { + lua_pop(co, nres); /* remove results anyway */ + lua_pushliteral(L, "too many results to resume"); return -1; /* error flag */ } - lua.lua_xmove(co, L, nres); /* move yielded values */ + lua_xmove(co, L, nres); /* move yielded values */ return nres; } else { - lua.lua_xmove(co, L, 1); /* move error message */ + lua_xmove(co, L, 1); /* move error message */ return -1; /* error flag */ } }; const luaB_coresume = function(L) { let co = getco(L); - let r = auxresume(L, co, lua.lua_gettop(L) - 1); + let r = auxresume(L, co, lua_gettop(L) - 1); if (r < 0) { - lua.lua_pushboolean(L, 0); - lua.lua_insert(L, -2); + lua_pushboolean(L, 0); + lua_insert(L, -2); return 2; /* return false + error message */ } else { - lua.lua_pushboolean(L, 1); - lua.lua_insert(L, -(r + 1)); + lua_pushboolean(L, 1); + lua_insert(L, -(r + 1)); return r + 1; /* return true + 'resume' returns */ } }; const luaB_auxwrap = function(L) { - let co = lua.lua_tothread(L, lua.lua_upvalueindex(1)); - let r = auxresume(L, co, lua.lua_gettop(L)); + let co = lua_tothread(L, lua_upvalueindex(1)); + let r = auxresume(L, co, lua_gettop(L)); if (r < 0) { - if (lua.lua_type(L, -1) === lua.LUA_TSTRING) { /* error object is a string? */ - lauxlib.luaL_where(L, 1); /* add extra info */ - lua.lua_insert(L, -2); - lua.lua_concat(L, 2); + if (lua_type(L, -1) === LUA_TSTRING) { /* error object is a string? */ + luaL_where(L, 1); /* add extra info */ + lua_insert(L, -2); + lua_concat(L, 2); } - return lua.lua_error(L); /* propagate error */ + return lua_error(L); /* propagate error */ } return r; }; const luaB_cocreate = function(L) { - lauxlib.luaL_checktype(L, 1, lua.LUA_TFUNCTION); - let NL = lua.lua_newthread(L); - lua.lua_pushvalue(L, 1); /* move function to top */ - lua.lua_xmove(L, NL, 1); /* move function from L to NL */ + luaL_checktype(L, 1, LUA_TFUNCTION); + let NL = lua_newthread(L); + lua_pushvalue(L, 1); /* move function to top */ + lua_xmove(L, NL, 1); /* move function from L to NL */ return 1; }; const luaB_cowrap = function(L) { luaB_cocreate(L); - lua.lua_pushcclosure(L, luaB_auxwrap, 1); + lua_pushcclosure(L, luaB_auxwrap, 1); return 1; }; const luaB_yield = function(L) { - return lua.lua_yield(L, lua.lua_gettop(L)); + return lua_yield(L, lua_gettop(L)); }; const luaB_costatus = function(L) { let co = getco(L); - if (L === co) lua.lua_pushliteral(L, "running"); + if (L === co) lua_pushliteral(L, "running"); else { - switch (lua.lua_status(co)) { - case lua.LUA_YIELD: - lua.lua_pushliteral(L, "suspended"); + switch (lua_status(co)) { + case LUA_YIELD: + lua_pushliteral(L, "suspended"); break; - case lua.LUA_OK: { - let ar = new lua.lua_Debug(); - if (lua.lua_getstack(co, 0, ar) > 0) /* does it have frames? */ - lua.lua_pushliteral(L, "normal"); /* it is running */ - else if (lua.lua_gettop(co) === 0) - lua.lua_pushliteral(L, "dead"); + case LUA_OK: { + let ar = new lua_Debug(); + if (lua_getstack(co, 0, ar) > 0) /* does it have frames? */ + lua_pushliteral(L, "normal"); /* it is running */ + else if (lua_gettop(co) === 0) + lua_pushliteral(L, "dead"); else - lua.lua_pushliteral(L, "suspended"); /* initial state */ + lua_pushliteral(L, "suspended"); /* initial state */ break; } default: /* some error occurred */ - lua.lua_pushliteral(L, "dead"); + lua_pushliteral(L, "dead"); break; } } @@ -115,12 +147,12 @@ const luaB_costatus = function(L) { }; const luaB_yieldable = function(L) { - lua.lua_pushboolean(L, lua.lua_isyieldable(L)); + lua_pushboolean(L, lua_isyieldable(L)); return 1; }; const luaB_corunning = function(L) { - lua.lua_pushboolean(L, lua.lua_pushthread(L)); + lua_pushboolean(L, lua_pushthread(L)); return 2; }; @@ -135,7 +167,7 @@ const co_funcs = { }; const luaopen_coroutine = function(L) { - lauxlib.luaL_newlib(L, co_funcs); + luaL_newlib(L, co_funcs); return 1; }; |