diff options
| -rw-r--r-- | README.md | 2 | ||||
| -rw-r--r-- | src/lstrlib.js | 6 | ||||
| -rw-r--r-- | tests/lstrlib.js | 31 |
3 files changed, 38 insertions, 1 deletions
@@ -213,6 +213,7 @@ - [x] string.len - [x] string.lower - [x] string.rep + - [x] string.reverse - [x] string.upper - [ ] string.byte - [ ] string.dump @@ -223,7 +224,6 @@ - [ ] string.match - [ ] string.pack - [ ] string.packsize - - [ ] string.reverse - [ ] string.sub - [ ] string.unpack - [ ] Package diff --git a/src/lstrlib.js b/src/lstrlib.js index 11b266a..2f89777 100644 --- a/src/lstrlib.js +++ b/src/lstrlib.js @@ -25,6 +25,11 @@ const str_char = function(L) { return 1; }; +const str_reverse = function(L) { + lapi.lua_pushstring(L, lauxlib.luaL_checkstring(L, 1).split("").reverse().join("")); + return 1; +}; + const str_lower = function(L) { lapi.lua_pushstring(L, lauxlib.luaL_checkstring(L, 1).toLowerCase()); return 1; @@ -49,6 +54,7 @@ const strlib = { "len": str_len, "lower": str_lower, "rep": str_rep, + "reverse": str_reverse, "upper": str_upper }; diff --git a/tests/lstrlib.js b/tests/lstrlib.js index 56fa2a3..d4e8493 100644 --- a/tests/lstrlib.js +++ b/tests/lstrlib.js @@ -146,4 +146,35 @@ test('string.rep', function (t) { "hello, hello, hello", "Correct element(s) on the stack" ); +}); + + +test('string.reverse', function (t) { + let luaCode = ` + return string.reverse("olleh") + `, L; + + t.plan(3); + + t.doesNotThrow(function () { + + L = lauxlib.luaL_newstate(); + + linit.luaL_openlibs(L); + + lauxlib.luaL_loadstring(L, luaCode); + + }, "Lua program loaded without error"); + + t.doesNotThrow(function () { + + lapi.lua_call(L, 0, -1); + + }, "Lua program ran without error"); + + t.strictEqual( + lapi.lua_tostring(L, -1), + "hello", + "Correct element(s) on the stack" + ); });
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