add model builtin instance function

builtin/model.dara

@@ -0,0 +1,19 @@
+init(data: map[string]any){}
+
+/**
+ * Validate model
+ * @return void
+ */
+function validate() throws: void;
+
+/**
+ * Model transforms to map[string]any
+ * @return map[string]any
+ */
+function toMap(): map[string]any;
+
+/**
+ * deep copy the Model without stream type
+ * @return $type
+ */
+function copyWithouStream(): $type;

lib/builtin.js

@@ -173,6 +173,8 @@ builtin.set('$Env', _module('env'));
 // TODO
 //builtin.set('Crypto', _module('crypto'));
 
+builtin.set('$ModelInstance', _module('model'));
+
 builtin.set('$Stream', _module('stream'));
 
 builtin.set('$Date', _module('date'));

lib/semantic.js

@@ -2237,9 +2237,13 @@ class TypeChecker {
       } else if(type.type === 'basic' && isBasicType(type.name)) {
         moduleName = this.getBuiltinModule(type.name);
         ast.builtinModule = moduleName;
-      } 
+      } else if(type.type === 'model') {
+        moduleName = '$ModelInstance';
+        ast.builtinModule = moduleName;
+      }
+
     }
-
+    
     const checker = this.getChecker(moduleName);
     const method = ast.left.propertyPath[0];
     const name = method.lexeme;
@@ -2686,7 +2690,7 @@ class TypeChecker {
   getInstanceType(id, env) {
     const type = this.getVariableType(id, env);
 
-    if(!isBasicType(type.type)) {
+    if(!isBasicType(type.type) && type.type !== 'model') {
       this.error('$type can only be used as basic type instacne call.', type);
     }
     if(type.type === 'array') {
@@ -2700,6 +2704,7 @@ class TypeChecker {
     if(type.type === 'entry') {
       return type.valueType;
     }
+
     return type;
   }
 

test/fixtures/builtin_module/model.dara

@@ -0,0 +1,26 @@
+model M {
+    name: string,
+    age: number,
+}
+
+static async function main(args: [string]): void { 
+    var m = new M{
+        name = 'test',
+        age = 123
+    };
+    m.validate();
+    var mmap = m.toMap();
+    var name = $string(mmap['name']);
+    if(name == 'test') {
+        $Logger.info(name);
+    }
+
+
+    var m2: M = m.copyWithouStream();
+    var mmap2 = m2.toMap();
+    var name2 = $string(mmap2['name']);
+
+    if(name2 == 'test') {
+        $Logger.info('copyWithouStream' + name2);
+    }
+}

test/semantic.test.js

@@ -7222,6 +7222,12 @@ describe('semantic', function () {
     }).to.not.throwException();
   });
 
+  it('use model builtin module shoule be ok', function(){
+    expect(function () {
+      readAndParse('fixtures/builtin_module/model.dara');
+    }).to.not.throwException();
+  });
+
   it('use builtin functions shoule be ok', function(){
     expect(function () {
       readAndParse('fixtures/builtin_function/function.dara');