[PATCH 8/8] jscript: Implement Array.prototype.lastIndexOf.
Gabriel Ivăncescu
gabrielopcode at gmail.com
Fri Apr 15 08:00:28 CDT 2022
Signed-off-by: Gabriel Ivăncescu <gabrielopcode at gmail.com>
---
dlls/jscript/array.c | 63 ++++++++++++++++++++++++++++++++++++++++
dlls/mshtml/tests/es5.js | 29 ++++++++++++++++++
2 files changed, 92 insertions(+)
diff --git a/dlls/jscript/array.c b/dlls/jscript/array.c
index 525b3a3..6aa1a69 100644
--- a/dlls/jscript/array.c
+++ b/dlls/jscript/array.c
@@ -1311,6 +1311,68 @@ done:
return hres;
}
+static HRESULT Array_lastIndexOf(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
+ jsval_t *r)
+{
+ jsval_t search, value;
+ unsigned i, length;
+ jsdisp_t *jsthis;
+ HRESULT hres;
+ BOOL eq;
+
+ TRACE("\n");
+
+ hres = get_length(ctx, vthis, &jsthis, &length);
+ if(FAILED(hres))
+ return hres;
+ if(!length)
+ goto notfound;
+
+ search = argc ? argv[0] : jsval_undefined();
+
+ i = length - 1;
+ if(argc > 1) {
+ double from_arg;
+
+ hres = to_integer(ctx, argv[1], &from_arg);
+ if(FAILED(hres))
+ goto done;
+
+ if(from_arg >= 0.0)
+ i = min(from_arg, i);
+ else {
+ from_arg += length;
+ if(from_arg < 0.0)
+ goto notfound;
+ i = from_arg;
+ }
+ }
+
+ do {
+ hres = jsdisp_get_idx(jsthis, i, &value);
+ if(hres == DISP_E_UNKNOWNNAME)
+ continue;
+ if(FAILED(hres))
+ goto done;
+
+ hres = jsval_strict_equal(value, search, &eq);
+ jsval_release(value);
+ if(FAILED(hres))
+ goto done;
+ if(eq) {
+ if(r) *r = jsval_number(i);
+ goto done;
+ }
+ } while(i--);
+
+notfound:
+ if(r) *r = jsval_number(-1);
+ hres = S_OK;
+done:
+ jsdisp_release(jsthis);
+ return hres;
+}
+
static HRESULT Array_map(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
{
IDispatch *context_this = NULL, *callback;
@@ -1610,6 +1672,7 @@ static const builtin_prop_t Array_props[] = {
{L"forEach", Array_forEach, PROPF_METHOD|PROPF_ES5|1},
{L"indexOf", Array_indexOf, PROPF_METHOD|PROPF_ES5|1},
{L"join", Array_join, PROPF_METHOD|1},
+ {L"lastIndexOf", Array_lastIndexOf, PROPF_METHOD|PROPF_ES5|1},
{L"length", NULL,0, Array_get_length, Array_set_length},
{L"map", Array_map, PROPF_METHOD|PROPF_ES5|1},
{L"pop", Array_pop, PROPF_METHOD},
diff --git a/dlls/mshtml/tests/es5.js b/dlls/mshtml/tests/es5.js
index ceb9c4a..d77c69c 100644
--- a/dlls/mshtml/tests/es5.js
+++ b/dlls/mshtml/tests/es5.js
@@ -147,6 +147,35 @@ sync_test("indexOf", function() {
expect([1,2,3], [2, 1.9], 1);
});
+sync_test("lastIndexOf", function() {
+ function expect(array, args, exr) {
+ var r = Array.prototype.lastIndexOf.apply(array, args);
+ ok(r == exr, "lastIndexOf returned " + r + " expected " + exr);
+ }
+
+ ok(Array.prototype.lastIndexOf.length == 1, "lastIndexOf.length = " + Array.prototype.lastIndexOf.length);
+
+ expect([1,2,3], [2], 1);
+ expect([1,undefined,3], [undefined], 1);
+ expect([1,undefined,3], [], 1);
+ expect([1,,3], [undefined], -1);
+ expect([1,undefined,undefined], [undefined], 2);
+ expect([1,2,3,2,5,6], [2, 2], 1);
+ expect([1,2,3,2,5,6], [2], 3);
+ expect([1,2,3,2,5,6], [2, -3], 3);
+ expect([1,2,3,2,5,6], [2, -4], 1);
+ expect([1,2,3,2,5,6], [1, -100], -1);
+ expect([1,2,3,2,5,6], [2, 100], 3);
+ expect("abcba", ["b"], 3);
+ expect(true, [true], -1);
+ expect({"4": 4, length: 5}, [4], 4);
+ expect({"4": 4, length: 5}, [undefined], -1);
+ expect({"4": 4, length: 3}, [4], -1);
+ expect({"test": true}, [true], -1);
+ expect([1,2,3], [2, 1.9], 1);
+ expect([1,2,3], [2, 0.9], -1);
+});
+
sync_test("filter", function() {
ok(Array.prototype.filter.length === 1, "filter.length = " + Array.prototype.filter.length);
--
2.34.1
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