jscript: Added RegExp.toString() implementation.

dlls/jscript/jsregexp.c

@@ -333,8 +333,50 @@ static HRESULT RegExp_lastIndex(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 static HRESULT RegExp_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
         jsval_t *r)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    RegExpInstance *regexp;
+    unsigned len, f;
+    jsstr_t *ret;
+    WCHAR *ptr;
+
+    TRACE("\n");
+
+    if(!is_vclass(jsthis, JSCLASS_REGEXP)) {
+        FIXME("Not a RegExp\n");
+        return E_NOTIMPL;
+    }
+
+    regexp = regexp_from_vdisp(jsthis);
+
+    if(!r)
+        return S_OK;
+
+    len = jsstr_length(regexp->str) + 2;
+
+    f = regexp->jsregexp->flags;
+    if(f & REG_FOLD)
+        len++;
+    if(f & REG_GLOB)
+        len++;
+    if(f & REG_MULTILINE)
+        len++;
+
+    ptr = jsstr_alloc_buf(len, &ret);
+    if(!ptr)
+        return E_OUTOFMEMORY;
+
+    *ptr++ = '/';
+    ptr += jsstr_flush(regexp->str, ptr);
+    *ptr++ = '/';
+
+    if(f & REG_FOLD)
+        *ptr++ = 'i';
+    if(f & REG_GLOB)
+        *ptr++ = 'g';
+    if(f & REG_MULTILINE)
+        *ptr++ = 'm';
+
+    *r = jsval_string(ret);
+    return S_OK;
 }
 
 static HRESULT create_match_array(script_ctx_t *ctx, jsstr_t *input_str,

dlls/jscript/tests/regexp.js

@@ -648,4 +648,16 @@ ok(!("$10" in RegExp), "RegExp.$10 exists");
 RegExp.$1 = "a";
 ok(RegExp.$1 === "b", "RegExp.$1 = " + RegExp.$1);
 
+ok(/abc/.toString() === "/abc/", "/abc/.toString() = " + /abc/.toString());
+ok(/\//.toString() === "/\\//", "/\//.toString() = " + /\//.toString());
+tmp = new RegExp("abc/");
+ok(tmp.toString() === "/abc//", "(new RegExp(\"abc/\")).toString() = " + tmp.toString());
+ok(/abc/g.toString() === "/abc/g", "/abc/g.toString() = " + /abc/g.toString());
+ok(/abc/i.toString() === "/abc/i", "/abc/i.toString() = " + /abc/i.toString());
+ok(/abc/ig.toString() === "/abc/ig", "/abc/ig.toString() = " + /abc/ig.toString());
+ok(/abc/mgi.toString() === "/abc/igm", "/abc/mgi.toString() = " + /abc/mgi.toString());
+tmp = new RegExp("abc/", "mgi");
+ok(tmp.toString() === "/abc//igm", "(new RegExp(\"abc/\")).toString() = " + tmp.toString());
+ok(/abc/.toString(1, false, "3") === "/abc/", "/abc/.toString(1, false, \"3\") = " + /abc/.toString());
+
 reportSuccess();