Fix deprotofy SassCalculation.clamp (#2043)

Author: ntkme

CHANGELOG.md

@@ -1,3 +1,10 @@
+## 1.64.1
+
+### Embedded Sass
+
+* Fix a bug where a valid `SassCalculation.clamp()` with less than 3 arguments
+  would throw an error.
+
 ## 1.64.0
 
 * Comments that appear before or between `@use` and `@forward` rules are now

lib/src/embedded/protofier.dart

@@ -350,16 +350,20 @@ class Protofier {
       return SassCalculation.calc(
           _deprotofyCalculationValue(calculation.arguments[0]));
     } else if (calculation.name == "clamp") {
-      if (calculation.arguments.length != 3) {
+      if (calculation.arguments.isEmpty || calculation.arguments.length > 3) {
         throw paramsError(
-            "Value.Calculation.arguments must have exactly 3 arguments for "
+            "Value.Calculation.arguments must have 1 to 3 arguments for "
             "clamp().");
       }
 
       return SassCalculation.clamp(
           _deprotofyCalculationValue(calculation.arguments[0]),
-          _deprotofyCalculationValue(calculation.arguments[1]),
-          _deprotofyCalculationValue(calculation.arguments[2]));
+          calculation.arguments.length > 1
+              ? _deprotofyCalculationValue(calculation.arguments[1])
+              : null,
+          calculation.arguments.length > 2
+              ? _deprotofyCalculationValue(calculation.arguments[2])
+              : null);
     } else if (calculation.name == "min") {
       if (calculation.arguments.isEmpty) {
         throw paramsError(

pkg/sass_api/pubspec.yaml

@@ -10,7 +10,7 @@ environment:
   sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
-  sass: 1.64.0
+  sass: 1.64.1
 
 dev_dependencies:
   dartdoc: ^5.0.0

pubspec.yaml

@@ -1,5 +1,5 @@
 name: sass
-version: 1.64.0
+version: 1.64.1
 description: A Sass implementation in Dart.
 homepage: https://github.com/sass/dart-sass
 

test/embedded/function_test.dart

@@ -1699,7 +1699,7 @@ void main() {
                       ..number = (Value_Number()..value = 3.0))
                     ..arguments.add(Value_Calculation_CalculationValue()
                       ..number = (Value_Number()..value = 4.0))),
-                equals("Value.Calculation.arguments must have exactly 3 "
+                equals("Value.Calculation.arguments must have 1 to 3 "
                     "arguments for clamp()."));
           });
         });
@@ -1714,14 +1714,8 @@ void main() {
 
           test("for clamp", () async {
             await _expectDeprotofyError(
-                Value()
-                  ..calculation = (Value_Calculation()
-                    ..name = "clamp"
-                    ..arguments.add(Value_Calculation_CalculationValue()
-                      ..number = (Value_Number()..value = 1.0))
-                    ..arguments.add(Value_Calculation_CalculationValue()
-                      ..number = (Value_Number()..value = 2.0))),
-                equals("Value.Calculation.arguments must have exactly 3 "
+                Value()..calculation = (Value_Calculation()..name = "clamp"),
+                equals("Value.Calculation.arguments must have 1 to 3 "
                     "arguments for clamp()."));
           });