Adjust syntax of setting _environment to avoid force unwrapping based on PR conmments

Author: TimWangING

Sources/Java2SwiftLib/JavaTranslator.swift

@@ -484,7 +484,11 @@ extension JavaTranslator {
 
     let initSyntax: DeclSyntax = """
     public init(_ enumValue: \(raw: name), environment: JNIEnvironment? = nil) {
-      let _environment = environment == nil ? try! JavaVirtualMachine.shared().environment() : environment!
+      let _environment = if let environment {
+        environment
+      } else {
+        try! JavaVirtualMachine.shared().environment()
+      }
       let classObj = try! JavaClass<Self>(in: _environment)
       switch enumValue {
     \(raw: enumFields.map {

Sources/JavaKitMacros/JavaMethodMacro.swift

@@ -94,7 +94,11 @@ extension JavaMethodMacro: BodyMacro {
 
     return [
       """
-      let _environment = environment == nil ? \(raw: tryKeyword) JavaVirtualMachine.shared().environment() : environment!
+      let _environment = if let environment {
+          environment
+      } else {
+          \(raw: tryKeyword) JavaVirtualMachine.shared().environment()
+      }
       self = \(raw: tryKeyword) Self.dynamicJavaNewObject(in: _environment\(raw: arguments))
       """
     ]

Tests/JavaKitMacroTests/JavaClassMacroTests.swift

@@ -47,11 +47,19 @@ class JavaKitMacroTests: XCTestCase {
 
         public struct HelloWorld {
           public init(environment: JNIEnvironment? = nil) {
-              let _environment = environment == nil ? try! JavaVirtualMachine.shared().environment() : environment!
+              let _environment = if let environment {
+                  environment
+              } else {
+                  try! JavaVirtualMachine.shared().environment()
+              }
               self = try! Self.dynamicJavaNewObject(in: _environment)
           }
           public init(_ value: Int32, environment: JNIEnvironment? = nil) {
-              let _environment = environment == nil ? try! JavaVirtualMachine.shared().environment() : environment!
+              let _environment = if let environment {
+                  environment
+              } else {
+                  try! JavaVirtualMachine.shared().environment()
+              }
               self = try! Self.dynamicJavaNewObject(in: _environment, arguments: value.self)
           }
           public func isBigEnough(_: Int32) -> Bool {