feat(stdlib): Add SendDefaultMode

CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Ability to specify a compile-time method ID expression for getters: PR [#922](https://github.com/tact-lang/tact/pull/922) and PR [#932](https://github.com/tact-lang/tact/pull/932)
 - Destructuring of structs and messages: PR [#856](https://github.com/tact-lang/tact/pull/856)
 - Docs: automatic links to Web IDE from all code blocks: PR [#994](https://github.com/tact-lang/tact/pull/994)
+- The `SendDefaultMode` send mode constant to the standard library: PR [#1010](https://github.com/tact-lang/tact/pull/1010)
 
 ### Changed
 

docs/grammars/grammar-tact.json

@@ -293,7 +293,7 @@
           },
           {
             "comment": "Other constants from the core library",
-            "match": "(?<!\\.)\\b(SendRemainingValue|SendRemainingBalance|SendPayGasSeparately|SendIgnoreErrors|SendBounceIfActionFail|SendDestroyIfZero|SendOnlyEstimateFee|ReserveExact|ReserveAllExcept|ReserveAtMost|ReserveAddOriginalBalance|ReserveInvertSign|ReserveBounceIfActionFail)\\b",
+            "match": "(?<!\\.)\\b(SendDefaultMode|SendRemainingValue|SendRemainingBalance|SendPayGasSeparately|SendIgnoreErrors|SendBounceIfActionFail|SendDestroyIfZero|SendOnlyEstimateFee|ReserveExact|ReserveAllExcept|ReserveAtMost|ReserveAddOriginalBalance|ReserveInvertSign|ReserveBounceIfActionFail)\\b",
             "name": "constant.other.builtin.tact"
           },
           {

docs/src/content/docs/book/message-mode.mdx

@@ -11,7 +11,7 @@ It's possible to use raw [`Int{:tact}`][int] values and manually provide them fo
 
 Mode value | Constant name                 | Description
 ---------: | :---------------------------- | -----------
-$0$        | -                             | Ordinary message (default).
+$0$        | `SendDefaultMode{:tact}`      | Ordinary message (default). <Badge text="Available since Tact 1.6" variant="tip" size="medium"/><p/>
 $64$       | `SendRemainingValue{:tact}`   | Carry all the remaining value of the inbound message in addition to the value initially indicated in the new message.
 $128$      | `SendRemainingBalance{:tact}` | Carry all the remaining balance of the current smart contract instead of the value originally indicated in the message.
 

stdlib/std/send.tact

@@ -4,6 +4,7 @@ asm fun nativeSendMessageReturnForwardFee(msg: Cell, mode: Int): Int { SENDMSG }
 
 const SendRemainingBalance: Int = 128;
 const SendRemainingValue: Int = 64;
+const SendDefaultMode: Int = 0;
 const SendIgnoreErrors: Int = 2;
 const SendPayGasSeparately: Int = 1;
 const SendDestroyIfZero: Int = 32;
@@ -14,7 +15,7 @@ struct SendParameters {
     bounce: Bool = true;
     to: Address;
     value: Int;
-    mode: Int = 0;
+    mode: Int = SendDefaultMode;
     body: Cell? = null;
     code: Cell? = null;
     data: Cell? = null;