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string contatenation handles conversion of integers to strings +

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floats always format as floats (with decimal dot or exponent)
This commit is contained in:
Roberto Ierusalimschy
2013-06-04 16:36:42 -03:00
parent 932e7fb0e1
commit 6fb0b11350
3 changed files with 25 additions and 22 deletions
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15
lauxlib.c
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@@ -1,5 +1,5 @@
/*
** $Id: lauxlib.c,v 1.248 2013/03/21 13:54:57 roberto Exp roberto $
** $Id: lauxlib.c,v 1.249 2013/04/25 13:53:13 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
@@ -737,15 +737,10 @@ LUALIB_API int luaL_len (lua_State *L, int idx) {
LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
if (!luaL_callmeta(L, idx, "__tostring")) { /* no metafield? */
switch (lua_type(L, idx)) {
case LUA_TNUMBER: {
if (lua_isinteger(L, idx)) {
lua_Integer n = lua_tointeger(L, idx);
lua_pushfstring(L, "%I", n);
}
else {
lua_Number n = lua_tonumber(L, idx);
lua_pushfstring(L, "%f", n);
}
case LUA_TNUMBER: { /* concatenate with empty string to convert */
lua_pushvalue(L, idx);
lua_pushliteral(L, "");
lua_concat(L, 2);
break;
}
case LUA_TSTRING: