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authorBenoit Giannangeli <benoit.giannangeli@boursorama.fr>2017-02-14 16:02:21 +0100
committerBenoit Giannangeli <benoit.giannangeli@boursorama.fr>2017-02-14 16:02:21 +0100
commit8e19f368c2c40d99a92b39c6f566c7bcb2af6cf7 (patch)
treeeacae97261255f4af1de2ecdf550e5052d4c27b9 /tests/ltm.js
parent4f76b9ac649cfa47b61f6b29af8c24e08cafec33 (diff)
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binary op tag methods
Diffstat (limited to 'tests/ltm.js')
-rw-r--r--tests/ltm.js151
1 files changed, 151 insertions, 0 deletions
diff --git a/tests/ltm.js b/tests/ltm.js
index 003afe3..cacb20b 100644
--- a/tests/ltm.js
+++ b/tests/ltm.js
@@ -648,4 +648,155 @@ test('__newindex table with own metatable', function (t) {
null,
"Program output is correct"
);
+});
+
+
+test('binary __xxx functions in metatable', function (t) {
+ let luaCode = `
+ local mt = {
+ __add = function (a, b)
+ return "{} + " .. b
+ end,
+
+ __sub = function (a, b)
+ return "{} - " .. b
+ end,
+
+ __mul = function (a, b)
+ return "{} * " .. b
+ end,
+
+ __mod = function (a, b)
+ return "{} % " .. b
+ end,
+
+ __pow = function (a, b)
+ return "{} ^ " .. b
+ end,
+
+ __div = function (a, b)
+ return "{} / " .. b
+ end,
+
+ __idiv = function (a, b)
+ return "{} // " .. b
+ end,
+
+ __band = function (a, b)
+ return "{} & " .. b
+ end,
+
+ __bor = function (a, b)
+ return "{} | " .. b
+ end,
+
+ __bxor = function (a, b)
+ return "{} ~ " .. b
+ end,
+
+ __shl = function (a, b)
+ return "{} << " .. b
+ end,
+
+ __shr = function (a, b)
+ return "{} >> " .. b
+ end
+
+ }
+
+ local t = {}
+
+ -- setmetatable(t, mt)
+
+ return
+ t + 1,
+ t - 1,
+ t * 1,
+ t % 1,
+ t ^ 1,
+ t / 1,
+ t // 1,
+ t & 1,
+ t | 1,
+ t ~ 1,
+ t << 1,
+ t >> 1
+ `, L;
+
+ t.plan(4);
+
+ t.comment("Running following code: \n" + luaCode);
+
+ t.doesNotThrow(function () {
+ L = getState(luaCode);
+ }, "Bytecode parsed without errors");
+
+
+
+ //main <hello.lua:0,0> (40 instructions at 0x7fd29ac03210)
+ //0+ params, 14 slots, 1 upvalue, 2 locals, 13 constants, 12 functions
+ // 1 [1] NEWTABLE 0 0 12
+ // 2 [4] CLOSURE 1 0 ; 0x7fd29ac03440
+ // 3 [4] SETTABLE 0 -1 1 ; "__add" -
+ // 4 [8] CLOSURE 1 1 ; 0x7fd29ac03500
+ // 5 [8] SETTABLE 0 -2 1 ; "__sub" -
+ // 6 [12] CLOSURE 1 2 ; 0x7fd29ac038c0
+ // 7 [12] SETTABLE 0 -3 1 ; "__mul" -
+ // 8 [16] CLOSURE 1 3 ; 0x7fd29ac039e0
+ // 9 [16] SETTABLE 0 -4 1 ; "__mod" -
+ // 10 [20] CLOSURE 1 4 ; 0x7fd29ac03c00
+ // 11 [20] SETTABLE 0 -5 1 ; "__pow" -
+ // 12 [24] CLOSURE 1 5 ; 0x7fd29ac036a0
+ // 13 [24] SETTABLE 0 -6 1 ; "__div" -
+ // 14 [28] CLOSURE 1 6 ; 0x7fd29ac037c0
+ // 15 [28] SETTABLE 0 -7 1 ; "__idiv" -
+ // 16 [32] CLOSURE 1 7 ; 0x7fd29ac03ce0
+ // 17 [32] SETTABLE 0 -8 1 ; "__band" -
+ // 18 [36] CLOSURE 1 8 ; 0x7fd29ac03b00
+ // 19 [36] SETTABLE 0 -9 1 ; "__bor" -
+ // 20 [40] CLOSURE 1 9 ; 0x7fd29ac04060
+ // 21 [40] SETTABLE 0 -10 1 ; "__bxor" -
+ // 22 [44] CLOSURE 1 10 ; 0x7fd29ac04180
+ // 23 [44] SETTABLE 0 -11 1 ; "__shl" -
+ // 24 [48] CLOSURE 1 11 ; 0x7fd29ac042a0
+ // 25 [48] SETTABLE 0 -12 1 ; "__shr" -
+ // 26 [52] NEWTABLE 1 0 0
+ // 27 [57] ADD 2 1 -13 ; - 1 <=== We stop here
+ // 28 [58] SUB 3 1 -13 ; - 1
+ // 29 [59] MUL 4 1 -13 ; - 1
+ // 30 [60] MOD 5 1 -13
+ // 31 [61] POW 6 1 -13 ; - 1
+ // 32 [62] DIV 7 1 -13 ; - 1
+ // 33 [63] IDIV 8 1 -13 ; - 1
+ // 34 [64] BAND 9 1 -13 ; - 1
+ // 35 [65] BOR 10 1 -13 ; - 1
+ // 36 [66] BXOR 11 1 -13 ; - 1
+ // 37 [67] SHL 12 1 -13 ; - 1
+ // 38 [68] SHR 13 1 -13 ; - 1
+ // 39 [68] RETURN 2 13
+ // 40 [68] RETURN 0 1
+ //
+ // ...
+
+ L.stack[0].p.code[26].breakpoint = true;
+
+ t.doesNotThrow(function () {
+ VM.luaV_execute(L);
+ }, "First part of the program executed without errors");
+
+ L.ci.pcOff--;
+ L.stack[0].p.code[26].breakpoint = false;
+
+ t.comment("We manually set t's metatable to mt");
+ L.stack[2].metatable = L.stack[1];
+
+ t.doesNotThrow(function () {
+ VM.luaV_execute(L);
+ }, "Second part of the program executed without errors");
+
+ t.deepEqual(
+ L.stack.slice(L.top - 12, L.top).map(function (e) { return e.value }),
+ ["{} + 1", "{} - 1", "{} * 1", "{} % 1", "{} ^ 1", "{} / 1", "{} // 1", "{} & 1", "{} | 1", "{} ~ 1", "{} << 1", "{} >> 1", ],
+ "Program output is correct"
+ );
}); \ No newline at end of file