[njs] QuickJS: added wrappers for strings creation.

[noreply at nginx.com]

details:   https://github.com/nginx/njs/commit/65f1e8555e226f0072d69fd673d000639f6428db
branches:  master
commit:    65f1e8555e226f0072d69fd673d000639f6428db
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Fri, 16 Aug 2024 23:29:48 -0700
description:
QuickJS: added wrappers for strings creation.


---
 src/qjs.c | 20 ++++++++++++++++++++
 src/qjs.h | 11 +++++++++++
 2 files changed, 31 insertions(+)

diff --git a/src/qjs.c b/src/qjs.c
index b8c53486..71aeab64 100644
--- a/src/qjs.c
+++ b/src/qjs.c
@@ -227,3 +227,23 @@ qjs_typed_array_data(JSContext *ctx, JSValueConst value, njs_str_t *data)
 
     return JS_UNDEFINED;
 }
+
+
+JSValue
+qjs_string_create_chb(JSContext *cx, njs_chb_t *chain)
+{
+    JSValue    val;
+    njs_int_t  ret;
+    njs_str_t  str;
+
+    ret = njs_chb_join(chain, &str);
+    if (ret != NJS_OK) {
+        return JS_ThrowInternalError(cx, "failed to create string");
+    }
+
+    val = JS_NewStringLen(cx, (const char *) str.start, str.length);
+
+    chain->free(cx, str.start);
+
+    return val;
+}
diff --git a/src/qjs.h b/src/qjs.h
index 531940ea..516fea96 100644
--- a/src/qjs.h
+++ b/src/qjs.h
@@ -77,6 +77,17 @@ void qjs_bytes_free(JSContext *ctx, qjs_bytes_t *data);
 JSValue qjs_typed_array_data(JSContext *ctx, JSValueConst value,
     njs_str_t *data);
 
+#define qjs_string_create(ctx, data, len)                                   \
+    JS_NewStringLen(ctx, (const char *) (data), len)
+JSValue qjs_string_create_chb(JSContext *cx, njs_chb_t *chain);
+
+
+static inline JS_BOOL JS_IsNullOrUndefined(JSValueConst v)
+{
+    return JS_VALUE_GET_TAG(v) == JS_TAG_NULL
+           || JS_VALUE_GET_TAG(v) == JS_TAG_UNDEFINED;
+}
+
 
 extern qjs_module_t              *qjs_modules[];