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authorBenoit Giannangeli <benoit.giannangeli@boursorama.fr>2017-02-28 09:08:45 +0100
committerBenoit Giannangeli <benoit.giannangeli@boursorama.fr>2017-02-28 10:49:46 +0100
commitf37df0022d609443c5b3f222a85ee465d8211b88 (patch)
tree3113ab9212d9d5c0e97bca396c7daf0b4395489c /src/lcode.js
parent8285c78283f922e5b5569ce5c28fb25074db0af3 (diff)
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grammar
Diffstat (limited to 'src/lcode.js')
-rw-r--r--src/lcode.js46
1 files changed, 42 insertions, 4 deletions
diff --git a/src/lcode.js b/src/lcode.js
index 695c7dc..e64c0a9 100644
--- a/src/lcode.js
+++ b/src/lcode.js
@@ -14,6 +14,39 @@ const OpCodesI = lopcode.OpCodesI;
*/
const NO_JUMP = -1;
+const BinOpr = {
+ OPR_ADD: 0,
+ OPR_SUB: 1,
+ OPR_MUL: 2,
+ OPR_MOD: 3,
+ OPR_POW: 4,
+ OPR_DIV: 5,
+ OPR_IDIV: 6,
+ OPR_BAND: 7,
+ OPR_BOR: 8,
+ OPR_BXOR: 9,
+ OPR_SHL: 10,
+ OPR_SHR: 11,
+ OPR_CONCAT: 12,
+ OPR_EQ: 13,
+ OPR_LT: 14,
+ OPR_LE: 15,
+ OPR_NE: 16,
+ OPR_GT: 17,
+ OPR_GE: 18,
+ OPR_AND: 19,
+ OPR_OR: 21,
+ OPR_NOBINOPR: 22
+};
+
+const UnOpr = {
+ OPR_MINUS: 0,
+ OPR_BNOT: 1,
+ OPR_NOT: 2,
+ OPR_LEN: 3,
+ OPR_NOUNOPR: 4
+};
+
/*
** Gets the destination address of a jump instruction. Used to traverse
** a list of jumps.
@@ -45,9 +78,9 @@ const fixjump = function(fs, pc, dest) {
const luaK_concat = function(fs, l1, l2) {
if (l2 === NO_JUMP) return; /* nothing to concatenate? */
else if (l1 === NO_JUMP) /* no original list? */
- l1[0] = l2;
+ l1 = l2;
else {
- let list = l1[0];
+ let list = l1;
let next = getjump(fs, list);
while (next !== NO_JUMP) { /* find last element */
list = next;
@@ -55,6 +88,8 @@ const luaK_concat = function(fs, l1, l2) {
}
fixjump(fs, list, l2);
}
+
+ return l1;
};
/*
@@ -67,7 +102,7 @@ const luaK_jump = function (fs) {
let jpc = fs.jpc; /* save list of jumps to here */
fs.jpc = NO_JUMP; /* no more jumps to here */
let j = luaK_codeAsBx(fs, OpCodesI.OP_JMP, 0, NO_JUMP);
- luaK_concat(fs, j, jpc); /* keep them on hold */
+ j = luaK_concat(fs, j, jpc); /* keep them on hold */
return j;
};
@@ -142,7 +177,7 @@ const patchlistaux = function(fs, list, vtarget, reg, dtarget) {
*/
const luaK_patchtohere = function(fs, list) {
luaK_getlabel(fs); /* mark "here" as a jump target */
- luaK_concat(fs, fs.jpc, list);
+ fs.jpc = luaK_concat(fs, fs.jpc, list);
};
/*
@@ -212,7 +247,10 @@ const luaK_codeAsBx = function(fs,o,A,sBx) {
return luaK_codeABx(fs, o, A, (sBx) + lopcode.MAXARG_sBx);
};
+module.exports.BinOpr = BinOpr;
module.exports.NO_JUMP = NO_JUMP;
+module.exports.UnOpr = UnOpr;
+module.exports.luaK_codeABC = luaK_codeABC;
module.exports.luaK_codeABx = luaK_codeABx;
module.exports.luaK_codeAsBx = luaK_codeAsBx;
module.exports.luaK_getlabel = luaK_getlabel;