mirrors/lua
1
0
Fork 0
mirror of https://github.com/lua/lua synced 2024-11-22 12:51:30 +03:00
Code Issues Packages Projects Releases Wiki Activity

now that 'luaO_str2num' always accepts a dot as a radix character,

Browse Source 
the lexer does not need to bother with this issue.
This commit is contained in:
Roberto Ierusalimschy 2016-05-02 11:02:12 -03:00
parent ed110f66c5
commit 0232fbffbe
2 changed files with 3 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
llex.c
View File

@ -1,5 +1,5 @@
/*
** $Id: llex.c,v 2.94 2015/10/28 18:51:47 roberto Exp roberto $
** $Id: llex.c,v 2.95 2015/11/19 19:16:22 roberto Exp roberto $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/
@ -162,7 +162,6 @@ static void inclinenumber (LexState *ls) {
void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
int firstchar) {
ls->t.token = 0;
ls->decpoint = '.';
ls->L = L;
ls->current = firstchar;
ls->lookahead.token = TK_EOS; /* no look-ahead token */
@ -207,35 +206,6 @@ static int check_next2 (LexState *ls, const char *set) {
}
/*
** change all characters 'from' in buffer to 'to'
*/
static void buffreplace (LexState *ls, char from, char to) {
if (from != to) {
size_t n = luaZ_bufflen(ls->buff);
char *p = luaZ_buffer(ls->buff);
while (n--)
if (p[n] == from) p[n] = to;
}
}
/*
** in case of format error, try to change decimal point separator to
** the one defined in the current locale and check again
*/
static void trydecpoint (LexState *ls, TValue *o) {
char old = ls->decpoint;
ls->decpoint = lua_getlocaledecpoint();
buffreplace(ls, old, ls->decpoint); /* try new decimal separator */
if (luaO_str2num(luaZ_buffer(ls->buff), o) == 0) {
/* format error with correct decimal point: no more options */
buffreplace(ls, ls->decpoint, '.'); /* undo change (for error message) */
lexerror(ls, "malformed number", TK_FLT);
}
}
/* LUA_NUMBER */
/*
** this function is quite liberal in what it accepts, as 'luaO_str2num'
@ -259,9 +229,8 @@ static int read_numeral (LexState *ls, SemInfo *seminfo) {
else break;
}
save(ls, '\0');
buffreplace(ls, '.', ls->decpoint); /* follow locale for decimal point */
if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0) /* format error? */
trydecpoint(ls, &obj); /* try to update decimal point separator */
lexerror(ls, "malformed number", TK_FLT);
if (ttisinteger(&obj)) {
seminfo->i = ivalue(&obj);
return TK_INT;

3
llex.h
View File

@ -1,5 +1,5 @@
/*
** $Id: llex.h,v 1.77 2014/10/25 11:50:46 roberto Exp roberto $
** $Id: llex.h,v 1.78 2014/10/29 15:38:24 roberto Exp roberto $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/
@ -69,7 +69,6 @@ typedef struct LexState {
struct Dyndata *dyd; /* dynamic structures used by the parser */
TString *source; /* current source name */
TString *envn; /* environment variable name */
char decpoint; /* locale decimal point */
} LexState;