refactor: indent on external function call args

examples/functions-out.mo

@@ -0,0 +1,23 @@
+within Somewhere;
+class MyClass
+  "Class to demo function definitions"
+  extends Modelica.Icons.BasesPackage;
+  function constructor
+    "Construct to connect to a schedule in EnergyPlus"
+    extends Modelica.Icons.Function;
+    input Integer input1
+      "input 1 comment";
+    output MyClass adapter;
+  external "C" adapter=ExternalFunctionCall(
+    param1,
+    param2,
+    param3);
+  end constructor;
+  function destructor
+    "Some comment"
+    extends Modelica.Icons.Function;
+    input Integer input2;
+  external "C" EnergyPlusInputVariableFree(
+    input2);
+  end destructor;
+end MyClass;

examples/functions.mo

@@ -0,0 +1,21 @@
+within Somewhere;
+class MyClass
+  "Class to demo function definitions"
+  extends Modelica.Icons.BasesPackage;
+
+  function constructor
+    "Construct to connect to a schedule in EnergyPlus"
+    extends Modelica.Icons.Function;
+
+    input Integer input1 "input 1 comment";
+    output MyClass adapter;
+    external "C" adapter = ExternalFunctionCall(param1, param2, param3);
+  end constructor;
+
+  function destructor "Some comment"
+    extends Modelica.Icons.Function;
+
+    input Integer input2;
+    external "C" EnergyPlusInputVariableFree(input2);
+  end destructor;
+end MyClass;

modelicafmt.go

@@ -30,7 +30,8 @@ func (l *modelicaListener) insertIndentBefore(rule antlr.ParserRuleContext) bool
 		parser.IExpression_listContext,
 		parser.IConstraining_clauseContext,
 		parser.IIf_expressionContext,
-		parser.IIf_expression_bodyContext:
+		parser.IIf_expression_bodyContext,
+		parser.IExternal_function_call_argumentContext:
 		return true
 	case parser.IString_commentContext:
 		return 0 == l.inAnnotation

modelicafmt_test.go

@@ -32,6 +32,7 @@ var exampleFileTests = []struct {
 }{
 	{"gmt-building.mo", "gmt-building-out.mo"},
 	{"gmt-coolingtower.mo", "gmt-coolingtower-out.mo"},
+	{"functions.mo", "functions-out.mo"},
 }
 
 func TestFormattingExamples(t *testing.T) {

thirdparty/Modelica.g4

@@ -82,8 +82,17 @@ language_specification
    : STRING
    ;
 
+// changed from original file
 external_function_call
-   : (component_reference '=')? IDENT '(' (expression_list)? ')'
+   : (component_reference '=')? IDENT '(' (external_function_call_args)? ')'
+   ;
+
+external_function_call_args
+   : external_function_call_argument (',' external_function_call_argument)*
+   ;
+
+external_function_call_argument
+   : expression
    ;
 
 element_list