redirect generated code to a file

Author: butterunderflow

src/main/scala/wasm/StagedMiniWasm.scala

@@ -681,7 +681,7 @@ object Main {
 
 
 object WasmToScalaCompiler {
-  def apply(moduleInst: ModuleInstance, main: Option[String], printRes: Boolean = false): String = {
+  def compile(moduleInst: ModuleInstance, main: Option[String], printRes: Boolean = false): String = {
     println(s"Now compiling wasm module with entry function $main")
     val code = new WasmToScalaCompilerDriver[Unit, Unit] {
       def module: ModuleInstance = moduleInst
@@ -1146,7 +1146,7 @@ trait WasmToCppCompilerDriver[A, B] extends CppSAIDriver[A, B] with StagedWasmEv
 }
 
 object WasmToCppCompiler {
-  def apply(moduleInst: ModuleInstance, main: Option[String], printRes: Boolean = false): String = {
+  def compile(moduleInst: ModuleInstance, main: Option[String], printRes: Boolean = false): String = {
     println(s"Now compiling wasm module with entry function $main")
     val code = new WasmToCppCompilerDriver[Unit, Unit] {
       def module: ModuleInstance = moduleInst

src/test/scala/genwasym/TestStagedEval.scala

@@ -10,7 +10,7 @@ import gensym.wasm.miniwasm._
 class TestStagedEval extends FunSuite {
   def testFileToScala(filename: String, main: Option[String] = None, printRes: Boolean = false) = {
     val moduleInst = ModuleInstance(Parser.parseFile(filename))
-    val code = WasmToScalaCompiler(moduleInst, main, true)
+    val code = WasmToScalaCompiler.compile(moduleInst, main, true)
     println(code)
   }
 
@@ -26,7 +26,15 @@ class TestStagedEval extends FunSuite {
 
   def testFileToCpp(filename: String, main: Option[String] = None, printRes: Boolean = false) = {
     val moduleInst = ModuleInstance(Parser.parseFile(filename))
-    val code = WasmToCppCompiler(moduleInst, main, true)
+    val code = WasmToCppCompiler.compile(moduleInst, main, true)
+    if (printRes) {
+      val writer = new java.io.PrintWriter(new java.io.File(s"$filename.cpp"))
+      try {
+        writer.write(code)
+      } finally {
+        writer.close()
+      }
+    }
     println(code)
   }