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-rw-r--r--src/ldo.js6
-rw-r--r--src/lobject.js13
-rw-r--r--src/lparser.js26
3 files changed, 31 insertions, 14 deletions
diff --git a/src/ldo.js b/src/ldo.js
index f78cc9c..efb971d 100644
--- a/src/ldo.js
+++ b/src/ldo.js
@@ -549,11 +549,11 @@ const luaD_protectedparser = function(L, z, name, mode) {
p.z = z;
p.name = name;
p.mode = mode;
- p.dyd.actvar.arr = null;
+ p.dyd.actvar.arr = [];
p.dyd.actvar.size = 0;
- p.dyd.gt.arr = null;
+ p.dyd.gt.arr = [];
p.dyd.gt.size = 0;
- p.dyd.label.arr = null;
+ p.dyd.label.arr = [];
p.dyd.label.size = 0;
let status = luaD_pcall(L, f_parser, p, L.top, L.errfunc);
diff --git a/src/lobject.js b/src/lobject.js
index f748416..bd234a1 100644
--- a/src/lobject.js
+++ b/src/lobject.js
@@ -204,6 +204,18 @@ class CClosure extends TValue {
}
+/*
+** Description of a local variable for function prototypes
+** (used for debug information)
+*/
+class LocVar {
+ constructor() {
+ this.varname = null;
+ this.startpc = NaN; /* first point where variable is active */
+ this.endpc = NaN; /* first point where variable is dead */
+ }
+}
+
const RETS = "...";
const PRE = "[string \"";
const POS = "\"]";
@@ -400,6 +412,7 @@ const numarith = function(L, op, v1, v2) {
module.exports.CClosure = CClosure;
module.exports.LClosure = LClosure;
+module.exports.LocVar = LocVar;
module.exports.TValue = TValue;
module.exports.Table = Table;
module.exports.UTF8BUFFSZ = UTF8BUFFSZ;
diff --git a/src/lparser.js b/src/lparser.js
index aa48f10..1e454e0 100644
--- a/src/lparser.js
+++ b/src/lparser.js
@@ -225,6 +225,7 @@ const checkname = function(ls, e) {
const registerlocalvar = function(ls, varname) {
let fs = ls.fs;
let f = fs.f;
+ f.locvars[fs.nlocvars] = new lobject.LocVar();
f.locvars[fs.nlocvars].varname = varname;
return fs.nlocvars++;
};
@@ -234,7 +235,9 @@ const new_localvar = function(ls, name) {
let dyd = ls.dyd;
let reg = registerlocalvar(ls, name);
checklimit(fs, dyd.actvar.n + 1 - fs.firstlocal, MAXVARS, "local variables");
- dyd.actvar.arr[dyd.actvar.n++].idx = reg;
+ dyd.actvar.arr[dyd.actvar.n] = new Vardesc();
+ dyd.actvar.arr[dyd.actvar.n].idx = reg;
+ dyd.actvar.n++;
};
const new_localvarliteral = function(ls, name) {
@@ -263,7 +266,7 @@ const removevars = function(fs, tolevel) {
const searchupvalue = function(fs, name) {
let up = fs.f.upvalues;
for (let i = 0; i < fs.nups; i++) {
- if (up[i].name === name)
+ if (up[i].name.value === name.value)
return i;
}
return -1; /* not found */
@@ -281,7 +284,7 @@ const newupvalue = function(fs, name, v) {
const searchvar = function(fs, n) {
for (let i = fs.nactvar - 1; i >= 0; i--) {
- if (n === getlocvar(fs, i).varname)
+ if (n.value === getlocvar(fs, i).varname.value)
return i;
}
@@ -373,10 +376,10 @@ const closegoto = function(ls, g, label) {
let fs = ls.fs;
let gl = ls.dyd.gt;
let gt = gl.arr[g];
- assert(gt.name === label.name);
+ assert(gt.name.value === label.name.value);
if (gt.nactvar < label.nactvar) {
let vname = getlocvar(fs, gt.nactvar).varname;
- semerror(ls, `<goto ${gt.name}> at line ${gt.line} jumps into the scope of local '${vname}'`);
+ semerror(ls, `<goto ${gt.name.value}> at line ${gt.line} jumps into the scope of local '${vname.value}'`);
}
lcode.luaK_patchlist(fs, gt.pc, label.pc);
/* remove goto from pending list */
@@ -395,7 +398,7 @@ const findlabel = function(ls, g) {
/* check labels in current block for a match */
for (let i = bl.firstlabel; i < dyd.label.n; i++) {
let lb = dyd.label.arr[i];
- if (lb.name === gt.name) { /* correct label? */
+ if (lb.name.value === gt.name.value) { /* correct label? */
if (gt.nactvar > lb.nactvar && (bl.upval || dyd.label.n > bl.firstlabel))
lcode.luaK_patchclose(ls.fs, gt.pc, lb.nactvar);
closegoto(ls, g, lb); /* close it */
@@ -407,6 +410,7 @@ const findlabel = function(ls, g) {
const newlabelentry = function(ls, l, name, line, pc) {
let n = l.n;
+ l.arr[n] = new Labeldesc();
l.arr[n].name = name;
l.arr[n].line = line;
l.arr[n].nactvar = ls.fs.nactvar;
@@ -423,7 +427,7 @@ const findgotos = function(ls, lb) {
let gl = ls.dyd.gt;
let i = ls.fs.bl.firstgoto;
while (i < gl.n) {
- if (gl.arr[i].name === lb.name)
+ if (gl.arr[i].name.value === lb.name.value)
closegoto(ls, i, lb);
else
i++;
@@ -478,9 +482,9 @@ const breaklabel = function(ls) {
** message when label name is a reserved word (which can only be 'break')
*/
const undefgoto = function(ls, gt) {
- const msg = llex.isreserved(gt.name)
- ? `<${gt.name}> at line ${gt.line} not inside a loop`
- : `no visible label '${gt.name}' for <goto> at line ${gt.line}`;
+ const msg = llex.isreserved(gt.name.value)
+ ? `<${gt.name.value}> at line ${gt.line} not inside a loop`
+ : `no visible label '${gt.name.value}' for <goto> at line ${gt.line}`;
semerror(ls, msg);
};
@@ -1139,7 +1143,7 @@ const gotostat = function(ls, pc) {
/* check for repeated labels on the same block */
const checkrepeated = function(fs, ll, label) {
for (let i = fs.bl.firstlabel; i < ll.n; i++) {
- if (label === ll.arr[i].name) {
+ if (label.value === ll.arr[i].name.value) {
semerror(fs.ls, `label '${label}' already defined on line ${ll.arr[i].line}`);
}
}