Improve android support

Author: larsgrefer

sass-embedded-host/src/main/java/de/larsgrefer/sass/embedded/functions/BiFunctionHostFunction.java

@@ -1,5 +1,6 @@
 package de.larsgrefer.sass.embedded.functions;
 
+import androidx.annotation.RequiresApi;
 import com.sass_lang.embedded_protocol.Value;
 
 import javax.annotation.Nonnull;
@@ -11,6 +12,7 @@
 /**
  * @author Lars Grefer
  */
+@RequiresApi(24)
 class BiFunctionHostFunction<T, U> extends HostFunction {
 
     private static final List<Argument> args = Collections.unmodifiableList(Arrays.asList(

sass-embedded-host/src/main/java/de/larsgrefer/sass/embedded/functions/FunctionHostFunction.java

@@ -1,5 +1,6 @@
 package de.larsgrefer.sass.embedded.functions;
 
+import androidx.annotation.RequiresApi;
 import com.sass_lang.embedded_protocol.Value;
 
 import javax.annotation.Nonnull;
@@ -10,6 +11,7 @@
 /**
  * @author Lars Grefer
  */
+@RequiresApi(24)
 class FunctionHostFunction<T> extends HostFunction {
 
     private static final List<Argument> args = Collections.singletonList(

sass-embedded-host/src/main/java/de/larsgrefer/sass/embedded/functions/HostFunctionFactory.java

@@ -1,5 +1,6 @@
 package de.larsgrefer.sass.embedded.functions;
 
+import androidx.annotation.RequiresApi;
 import lombok.experimental.UtilityClass;
 
 import javax.annotation.Nonnull;
@@ -17,14 +18,17 @@
 @UtilityClass
 public class HostFunctionFactory {
 
+    @RequiresApi(26)
     public <T> List<HostFunction> allSassFunctions(@Nonnull T object) {
         return allSassFunctions((Class<T>) object.getClass(), object);
     }
 
+    @RequiresApi(26)
     public List<HostFunction> allSassFunctions(@Nonnull Class<?> clazz) {
         return allSassFunctions(clazz, null);
     }
 
+    @RequiresApi(26)
     public <T> List<HostFunction> allSassFunctions(@Nonnull Class<T> clazz, @Nullable T object) {
         List<HostFunction> result = new ArrayList<>();
 
@@ -39,10 +43,12 @@ public <T> List<HostFunction> allSassFunctions(@Nonnull Class<T> clazz, @Nullabl
         return result;
     }
 
+    @RequiresApi(26)
     public HostFunction ofMethod(Method method) {
         return ofMethod(method, null);
     }
 
+    @RequiresApi(26)
     public HostFunction ofMethod(@Nonnull Method method, @Nullable Object targetObject) {
         return new ReflectiveHostFunction(method, targetObject);
     }
@@ -51,10 +57,12 @@ public HostFunction ofLambda(String name, Callable<?> lambda) {
         return new CallableHostFunction(name, lambda);
     }
 
+    @RequiresApi(24)
     public <T> HostFunction ofLambda(String name, Class<T> argType, Function<T, ?> lambda) {
         return new FunctionHostFunction<>(name, argType, lambda);
     }
 
+    @RequiresApi(24)
     public <T, U> HostFunction ofLambda(String name, Class<T> arg0Type, Class<U> arg1Type, BiFunction<T, U, ?> lambda) {
         return new BiFunctionHostFunction<>(name, arg0Type, arg1Type, lambda);
     }

sass-embedded-host/src/main/java/de/larsgrefer/sass/embedded/functions/ReflectiveHostFunction.java

@@ -1,5 +1,6 @@
 package de.larsgrefer.sass.embedded.functions;
 
+import androidx.annotation.RequiresApi;
 import com.sass_lang.embedded_protocol.Value;
 
 import javax.annotation.Nonnull;
@@ -15,6 +16,7 @@
 /**
  * @author Lars Grefer
  */
+@RequiresApi(26)
 class ReflectiveHostFunction extends HostFunction {
 
     private final Method method;