Add toString for Address type

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - JSON Schema for `tact.config.json`: PR [#194](https://github.com/tact-lang/tact/pull/194)
 - Display an error for integer overflow at compile-time: PR [#200](https://github.com/tact-lang/tact/pull/200)
 - Non-modifying `StringBuilder`'s `concat` method for chained string concatenations: PR [#217](https://github.com/tact-lang/tact/pull/217)
+- `toString` extension function for `Address` type: PR [#224](https://github.com/tact-lang/tact/pull/224)
 
 ### Changed
 - Update the `dump` function to handle addresses: PR [#175](https://github.com/tact-lang/tact/pull/175)

src/imports/stdlib.ts

@@ -250,7 +250,8 @@ files['std/text.tact'] =
     'bHNlIHsKICAgICAgICAgICAgdGhyb3coMTM0KTsKICAgICAgICB9CiAgICB9CgogICAgLy8gUGFkZGluZwogICAgbGV0IHRvdGFsOiBJbnQgPSByZXN1bHQuYml0cygp' +
     'OwogICAgbGV0IHBhZGRpbmc6IEludCA9IHRvdGFsICUgODsKICAgIGlmIChwYWRkaW5nICE9IDApIHsKICAgICAgICBsZXQgczogU2xpY2UgPSByZXN1bHQuYXNTbGlj' +
     'ZSgpOwogICAgICAgIHJldHVybiBzLmxvYWRCaXRzKHRvdGFsIC0gcGFkZGluZyk7CiAgICB9IGVsc2UgewogICAgICAgIHJldHVybiByZXN1bHQuYXNTbGljZSgpOwog' +
-    'ICAgfQp9';
+    'ICAgfQp9CgovLwovLyBBZGRyZXNzIGNvbnZlcnNpb24KLy8KCkBuYW1lKF9fdGFjdF9hZGRyZXNzX3RvX3VzZXJmcmllbmRseSkKZXh0ZW5kcyBuYXRpdmUgdG9TdHJp' +
+    'bmcoc2VsZjogQWRkcmVzcyk6IFN0cmluZzs=';
 files['stdlib_ex.fc'] =
     'Zm9yYWxsIFggLT4gdHVwbGUgX190YWN0X3NldCh0dXBsZSB4LCBYIHYsIGludCBpKSBhc20gIlNFVElOREVYVkFSUSI7CigpIF9fdGFjdF9ub3AoKSBhc20gIk5PUCI7' +
     'CnNsaWNlIF9fdGFjdF9zdHJfdG9fc2xpY2Uoc2xpY2UgcykgYXNtICJOT1AiOwpzbGljZSBfX3RhY3Rfc2xpY2VfdG9fc3RyKHNsaWNlIHMpIGFzbSAiTk9QIjsKc2xp' +

src/test/feature-strings.spec.ts

@@ -60,5 +60,7 @@ describe('feature-strings', () => {
         expect(await contract.getStringWithEscapedChars4()).toEqual(
             "\u{2028}\u{2029} \u0044 \x41\x42\x43"
         );
+
+        expect(await contract.getStringWithAddress()).toEqual('EQBKgXCNLPexWhs2L79kiARR1phGH1LwXxRbNsCFF9doc2lN');
     });
 });

src/test/features/strings.tact

@@ -99,4 +99,8 @@ contract StringsTester {
     get fun stringWithEscapedChars4(): String {
         return "\u{2028}\u{2029} \u0044 \x41\x42\x43";
     }
+
+    get fun stringWithAddress(): String {
+        return address("EQBKgXCNLPexWhs2L79kiARR1phGH1LwXxRbNsCFF9doc2lN").toString();
+    }
 }

stdlib/std/text.tact

@@ -91,4 +91,11 @@ extends fun fromBase64(self: Slice): Slice {
     } else {
         return result.asSlice();
     }
-}
+}
+
+//
+// Address conversion
+//
+
+@name(__tact_address_to_userfriendly)
+extends native toString(self: Address): String;