Improve callstack() debug function and rename it to stacktrace()

modules/debug/src/main/kotlin/io/smnp/ext/DebugModule.kt

@@ -1,9 +1,9 @@
 package io.smnp.ext
 
-import io.smnp.ext.function.CallStackFunction
+import io.smnp.ext.function.StackTraceFuction
 import org.pf4j.Extension
 
 @Extension
 class DebugModule : NativeModuleProvider("smnp.lang.debug") {
-   override fun functions() = listOf(CallStackFunction())
+   override fun functions() = listOf(StackTraceFuction())
 }

modules/debug/src/main/kotlin/io/smnp/ext/function/CallStackFunction.kt

@@ -1,15 +0,0 @@
-package io.smnp.ext.function
-
-import io.smnp.callable.function.Function
-import io.smnp.callable.function.FunctionDefinitionTool
-import io.smnp.callable.signature.Signature
-import io.smnp.type.model.Value
-
-class CallStackFunction : Function("callstack") {
-   override fun define(new: FunctionDefinitionTool) {
-      new function Signature.simple() body { env, _ ->
-         env.printCallStack()
-         Value.void()
-      }
-   }
-}

modules/debug/src/main/kotlin/io/smnp/ext/function/StackTraceFuction.kt

@@ -0,0 +1,18 @@
+package io.smnp.ext.function
+
+import io.smnp.callable.function.Function
+import io.smnp.callable.function.FunctionDefinitionTool
+import io.smnp.callable.signature.Signature
+import io.smnp.type.enumeration.DataType.BOOL
+import io.smnp.type.matcher.Matcher.Companion.ofType
+import io.smnp.type.matcher.Matcher.Companion.optional
+import io.smnp.type.model.Value
+
+class StackTraceFuction : Function("stacktrace") {
+   override fun define(new: FunctionDefinitionTool) {
+      new function Signature.simple(optional(ofType(BOOL))) body { env, args ->
+         env.printCallStack(args.getOrNull(0)?.value as Boolean? ?: false)
+         Value.void()
+      }
+   }
+}