Add different error message for static / non-static.

Also github action cache

Author: TPGamesNL

.github/workflows/gradle.yml

@@ -15,6 +15,14 @@ jobs:
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
+    - name: Cache Gradle
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
+        restore-keys: ${{ runner.os }}-gradle
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Build with Gradle

src/main/java/com/btk5h/skriptmirror/Descriptor.java

@@ -57,9 +57,13 @@ public Class<?>[] getParameterTypes() {
 
   @Override
   public String toString() {
-    return String.format("%s#%s",
-        javaClass == null ? "(unspecified)" : SkriptMirrorUtil.getDebugName(javaClass),
-        name);
+    return toString(false);
+  }
+
+  public String toString(boolean isStatic) {
+    return String.format("%s" + (isStatic ? "." : "#") + "%s",
+      javaClass == null ? "(unspecified)" : SkriptMirrorUtil.getDebugName(javaClass),
+      name);
   }
 
   public Descriptor orDefaultClass(Class<?> cls) {

src/main/java/com/btk5h/skriptmirror/skript/reflect/ExprJavaCall.java

@@ -426,7 +426,8 @@ private T invoke(Object target, Object[] arguments, Descriptor baseDescriptor) {
     // Copy arguments so that the original array isn't modified by type conversions
     // For instance methods, the target of the call must be added to the start of the arguments array
     Object[] argumentsCopy;
-    if (target instanceof JavaType) {
+    boolean isStatic = target instanceof JavaType;
+    if (isStatic) {
       argumentsCopy = createStaticArgumentsCopy(arguments);
     } else {
       argumentsCopy = createInstanceArgumentsCopy(target, arguments);
@@ -436,7 +437,7 @@ private T invoke(Object target, Object[] arguments, Descriptor baseDescriptor) {
 
     if (!method.isPresent()) {
       error(String.format("No matching %s: %s%s",
-          type, descriptor, argumentsMessage(arguments)));
+          type, descriptor.toString(isStatic), argumentsMessage(arguments)));
 
       suggestParameters(descriptor);
       suggestTypo(descriptor);