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better error messages for some limits

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Roberto Ierusalimschy
2004-03-12 16:53:56 -03:00
parent b876ec61c0
commit a003e89125
3 changed files with 26 additions and 23 deletions
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24
lparser.c
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@@ -1,5 +1,5 @@
/*
** $Id: lparser.c,v 1.222 2003/12/09 16:56:11 roberto Exp roberto $
** $Id: lparser.c,v 2.1 2003/12/10 12:13:36 roberto Exp roberto $
** Lua Parser
** See Copyright Notice in lua.h
*/
@@ -28,9 +28,10 @@
#define getlocvar(fs, i) ((fs)->f->locvars[(fs)->actvar[i]])
#define luaY_checklimit(fs,v,l,m) if ((v)>(l)) luaY_errorlimit(fs,l,m)
#define enterlevel(ls) if (++(ls)->nestlevel > LUA_MAXPARSERLEVEL) \
luaX_syntaxerror(ls, "too many syntax levels");
#define enterlevel(ls) if (++(ls)->nestlevel > LUA_MAXPARSERLEVEL) \
luaX_lexerror(ls, "chunk has too many syntax levels", 0)
#define leavelevel(ls) ((ls)->nestlevel--)
@@ -86,6 +87,15 @@ static void error_expected (LexState *ls, int token) {
}
static void luaY_errorlimit (FuncState *fs, int limit, const char *what) {
const char *msg = (fs->f->lineDefined == 0) ?
luaO_pushfstring(fs->L, "main function has more than %d %s", limit, what) :
luaO_pushfstring(fs->L, "function at line %d has more than %d %s",
fs->f->lineDefined, limit, what);
luaX_lexerror(fs->ls, msg, 0);
}
static int testnext (LexState *ls, int c) {
if (ls->t.token == c) {
next(ls);
@@ -163,7 +173,7 @@ static int luaI_registerlocalvar (LexState *ls, TString *varname) {
static void new_localvar (LexState *ls, TString *name, int n) {
FuncState *fs = ls->fs;
luaX_checklimit(ls, fs->nactvar+n+1, MAXVARS, "local variables");
luaY_checklimit(fs, fs->nactvar+n+1, MAXVARS, "local variables");
fs->actvar[fs->nactvar+n] = cast(unsigned short,
luaI_registerlocalvar(ls, name));
}
@@ -196,7 +206,7 @@ static int indexupvalue (FuncState *fs, TString *name, expdesc *v) {
}
}
/* new one */
luaX_checklimit(fs->ls, f->nups + 1, MAXUPVALUES, "upvalues");
luaY_checklimit(fs, f->nups + 1, MAXUPVALUES, "upvalues");
luaM_growvector(fs->L, f->upvalues, f->nups, f->sizeupvalues,
TString *, MAX_INT, "");
while (oldsize < f->sizeupvalues) f->upvalues[oldsize++] = NULL;
@@ -441,7 +451,7 @@ static void recfield (LexState *ls, struct ConsControl *cc) {
int reg = ls->fs->freereg;
expdesc key, val;
if (ls->t.token == TK_NAME) {
luaX_checklimit(ls, cc->nh, MAX_INT, "items in a constructor");
luaY_checklimit(fs, cc->nh, MAX_INT, "items in a constructor");
cc->nh++;
checkname(ls, &key);
}
@@ -485,7 +495,7 @@ static void lastlistfield (FuncState *fs, struct ConsControl *cc) {
static void listfield (LexState *ls, struct ConsControl *cc) {
expr(ls, &cc->v);
luaX_checklimit(ls, cc->na, MAXARG_Bx, "items in a constructor");
luaY_checklimit(ls->fs, cc->na, MAXARG_Bx, "items in a constructor");
cc->na++;
cc->tostore++;
}