From 4190613ed2266b2f1a5829f2baca0b27873ff6a5 Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Thu, 11 Apr 2024 17:27:15 +0200
Subject: [PATCH] [spidermonkey] console.assert

---
 src/ecmascript/spidermonkey/console.cpp | 37 +++++++++++++++++++++++++
 src/ecmascript/spidermonkey/util.h      | 13 ++++-----
 test/ecmascript/console.assert.html     |  4 +++
 3 files changed, 47 insertions(+), 7 deletions(-)
 create mode 100644 test/ecmascript/console.assert.html

diff --git a/src/ecmascript/spidermonkey/console.cpp b/src/ecmascript/spidermonkey/console.cpp
index 5af2ded0..8d0e0e5c 100644
--- a/src/ecmascript/spidermonkey/console.cpp
+++ b/src/ecmascript/spidermonkey/console.cpp
@@ -53,15 +53,52 @@ const JSClass console_class = {
 	&console_ops
 };
 
+static bool console_assert(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool console_error(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool console_log(JSContext *ctx, unsigned int argc, JS::Value *vp);
 
 const spidermonkeyFunctionSpec console_funcs[] = {
+	{ "assert",		console_assert,		2 },
 	{ "log",		console_log,	 	1 },
 	{ "error",		console_error,	 	1 },
 	{ NULL }
 };
 
+static bool
+console_assert(JSContext *ctx, unsigned int argc, JS::Value *vp)
+{
+	JS::CallArgs args = CallArgsFromVp(argc, vp);
+	args.rval().setUndefined();
+
+	if (argc < 1 || !get_opt_bool("ecmascript.enable_console_log", NULL)) {
+		return true;
+	}
+	bool res = jsval_to_boolean(ctx, args[0]);
+
+	if (res) {
+		return true;
+	}
+	FILE *log = fopen(console_error_filename, "a");
+
+	if (!log) {
+		return true;
+	}
+	fprintf(log, "Assertion failed:");
+
+	for (int i = 1; i < argc; i++) {
+		char *val = jsval_to_string(ctx, args[i]);
+
+		if (val) {
+			fprintf(log, " %s", val);
+			mem_free(val);
+		}
+	}
+	fprintf(log, "\n");
+	fclose(log);
+
+	return true;
+}
+
 static bool
 console_log_common(JSContext *ctx, unsigned int argc, JS::Value *vp, const char *log_filename)
 {
diff --git a/src/ecmascript/spidermonkey/util.h b/src/ecmascript/spidermonkey/util.h
index a2ebf574..b7360502 100644
--- a/src/ecmascript/spidermonkey/util.h
+++ b/src/ecmascript/spidermonkey/util.h
@@ -7,7 +7,7 @@
 static void string_to_jsval(JSContext *ctx, JS::Value *vp, char *string);
 static void astring_to_jsval(JSContext *ctx, JS::Value *vp, char *string);
 
-static int jsval_to_boolean(JSContext *ctx, JS::Value *vp);
+static bool jsval_to_boolean(JSContext *ctx, JS::HandleValue hvp);
 
 /** Inline functions */
 
@@ -28,13 +28,12 @@ astring_to_jsval(JSContext *ctx, JS::Value *vp, char *string)
 	mem_free_if(string);
 }
 
-static inline int
-jsval_to_boolean(JSContext *ctx, JS::Value *vp)
-{
-	JS::RootedValue r_vp(ctx, *vp);
-	return (int)r_vp.toBoolean();
-}
 
+static inline bool
+jsval_to_boolean(JSContext *ctx, JS::HandleValue hvp)
+{
+	return hvp.toBoolean();
+}
 
 /* Since SpiderMonkey 52 the Mutable Handle Object
  * is different for String and Number and must be
diff --git a/test/ecmascript/console.assert.html b/test/ecmascript/console.assert.html
new file mode 100644
index 00000000..5750944a
--- /dev/null
+++ b/test/ecmascript/console.assert.html
@@ -0,0 +1,4 @@
+<script>
+console.assert(0 % 2 === 0, "O is not even");
+console.assert(1 % 2 === 0, "1 is not even");
+</script>