Add a helper for getting array length: tf_util_get_length.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3925 ed5197a5-7fde-0310-b194-c3ffbd925b24

src/serialize.c

@@ -239,10 +239,7 @@ static bool _serialize_storeInternal(tf_task_t* task, tf_taskstub_t* to, buffer_
 	else if (JS_IsArray(tf_task_get_context(task), value))
 	{
 		_serialize_writeInt32(buffer, kArray);
-		JSValue length_val = JS_GetPropertyStr(tf_task_get_context(task), value, "length");
-		int length;
-		if (JS_ToInt32(tf_task_get_context(task), &length, length_val) == 0)
-		{
+		int length = tf_util_get_length(tf_task_get_context(task), value);
 		_serialize_writeInt32(buffer, length);
 		for (int i = 0; i < length; ++i)
 		{
@@ -251,12 +248,6 @@ static bool _serialize_storeInternal(tf_task_t* task, tf_taskstub_t* to, buffer_
 			JS_FreeValue(context, element);
 		}
 	}
-		else
-		{
-			_serialize_writeInt32(buffer, 0);
-		}
-		JS_FreeValue(tf_task_get_context(task), length_val);
-	}
 	else if (JS_IsFunction(tf_task_get_context(task), value))
 	{
 		_serialize_writeInt32(buffer, kFunction);

src/ssb.c

@@ -4,6 +4,7 @@
 #include "ssb.connections.h"
 #include "ssb.db.h"
 #include "trace.h"
+#include "util.js.h"
 
 #include <assert.h>
 #include <base64c.h>
@@ -1045,10 +1046,7 @@ static bool _tf_ssb_name_equals(JSContext* context, JSValue object, const char**
 
 	if (JS_IsArray(context, name))
 	{
-		int length;
-		JSValue lengthval = JS_GetPropertyStr(context, name, "length");
-		if (JS_ToInt32(context, &length, lengthval) == 0)
-		{
+		int length = tf_util_get_length(context, name);
 		for (int i = 0; i < length; i++)
 		{
 			if (!match[i])
@@ -1071,8 +1069,6 @@ static bool _tf_ssb_name_equals(JSContext* context, JSValue object, const char**
 			result = false;
 		}
 	}
-		JS_FreeValue(context, lengthval);
-	}
 	else
 	{
 		result = false;

src/ssb.db.c

@@ -3,6 +3,7 @@
 #include "mem.h"
 #include "ssb.h"
 #include "trace.h"
+#include "util.js.h"
 
 #include <base64c.h>
 #include <sodium/crypto_hash_sha256.h>
@@ -425,15 +426,18 @@ bool tf_ssb_db_get_latest_message_by_author(tf_ssb_t* ssb, const char* author, i
 
 static bool _tf_ssb_sqlite_bind_json(JSContext* context, sqlite3* db, sqlite3_stmt* statement, JSValue binds)
 {
-	bool all_bound = true;
-	int32_t length = 0;
 	if (JS_IsUndefined(binds))
 	{
 		return true;
 	}
-	JSValue lengthval = JS_GetPropertyStr(context, binds, "length");
-	if (JS_ToInt32(context, &length, lengthval) == 0)
+	if (!JS_IsArray(context, binds))
 	{
+		printf("Expected bind parameters to be an array.\n");
+		return false;
+	}
+
+	bool all_bound = true;
+	int32_t length = tf_util_get_length(context, binds);
 	for (int i = 0; i < length; i++)
 	{
 		JSValue value = JS_GetPropertyUint32(context, binds, i);
@@ -481,12 +485,6 @@ static bool _tf_ssb_sqlite_bind_json(JSContext* context, sqlite3* db, sqlite3_st
 		}
 		JS_FreeValue(context, value);
 	}
-	}
-	else
-	{
-		printf("expected array\n");
-	}
-	JS_FreeValue(context, lengthval);
 	return all_bound;
 }
 

src/ssb.import.c

@@ -3,6 +3,7 @@
 #include "mem.h"
 #include "ssb.db.h"
 #include "ssb.h"
+#include "util.js.h"
 
 #include <quickjs.h>
 #include <stdlib.h>
@@ -51,10 +52,7 @@ static void _tf_ssb_import_add_app(tf_ssb_t* ssb, const char* user, const char*
 		JS_FreeValue(context, apps);
 		apps = JS_NewArray(context);
 	}
-	int32_t length = 0;
-	JSValue lengthval = JS_GetPropertyStr(context, apps, "length");
-	JS_ToInt32(context, &length, lengthval);
-	JS_FreeValue(context, lengthval);
+	int32_t length = tf_util_get_length(context, apps);;
 	JS_SetPropertyUint32(context, apps, length, JS_NewString(context, app));
 
 	JSValue json = JS_JSONStringify(context, apps, JS_NULL, JS_NULL);

src/ssb.js.c

@@ -488,14 +488,10 @@ static JSValue _tf_ssb_add_rpc(JSContext* context, JSValueConst this_val, int ar
 		return JS_ThrowTypeError(context, "Expected argument 2 to be a function.");
 	}
 
-	JSValue length_val = JS_GetPropertyStr(context, argv[0], "length");
-	int length = 0;
-	JS_ToInt32(context, &length, length_val);
-	JS_FreeValue(context, length_val);
-
 	enum { k_max_name_parts = 16 };
 	const char* name[k_max_name_parts + 1] = { 0 };
 
+	int length = tf_util_get_length(context, argv[0]);
 	if (length >= k_max_name_parts)
 	{
 		return JS_ThrowInternalError(context, "Too many parts to RPC name.");

src/task.c

@@ -423,11 +423,8 @@ JSValue _task_invokeExport_internal(tf_taskstub_t* from, tf_task_t* to, exportid
 		JSValue arguments = tf_serialize_load(to, from, buffer, size);
 
 		JSValue* argument_array = NULL;
-		JSValue length_val = JS_GetPropertyStr(to->_context, arguments, "length");
-		int length;
 		JSValue this_val = JS_NULL;
-		if (JS_ToInt32(to->_context, &length, length_val) == 0)
-		{
+		int length = tf_util_get_length(to->_context, arguments);
 		if (length > 0)
 		{
 			this_val = JS_GetPropertyUint32(to->_context, arguments, 0);
@@ -437,8 +434,6 @@ JSValue _task_invokeExport_internal(tf_taskstub_t* from, tf_task_t* to, exportid
 		{
 			argument_array[i - 1] = JS_GetPropertyUint32(to->_context, arguments, i);
 		}
-		}
-		JS_FreeValue(to->_context, length_val);
 		JSValue function = export->_function;
 
 		JSPropertyDescriptor desc = { 0 };

src/util.js.c

@@ -205,3 +205,12 @@ void tf_util_register(JSContext* context)
 	JS_SetPropertyStr(context, global, "setTimeout", JS_NewCFunction(context, _util_setTimeout, "setTimeout", 2));
 	JS_FreeValue(context, global);
 }
+
+int tf_util_get_length(JSContext* context, JSValue value)
+{
+	JSValue length = JS_GetPropertyStr(context, value, "length");
+	int result = 0;
+	JS_ToInt32(context, &result, length);
+	JS_FreeValue(context, length);
+	return result;
+}

src/util.js.h

@@ -9,3 +9,4 @@ JSValue tf_util_utf8_decode(JSContext* context, JSValue value);
 uint8_t* tf_util_try_get_array_buffer(JSContext* context, size_t* psize, JSValueConst obj);
 JSValue tf_util_try_get_typed_array_buffer(JSContext* context, JSValueConst obj, size_t* pbyte_offset, size_t* pbyte_length, size_t* pbytes_per_element);
 bool tf_util_report_error(JSContext* context, JSValue value);
+int tf_util_get_length(JSContext* context, JSValue value);