Fix memory builder (#10)

* fix memory instance creation

* change version

build.gradle

@@ -21,7 +21,7 @@ buildscript {
 allprojects {
     apply plugin: 'java'
     group 'com.github.cretz.asmble'
-    version '0.4.5-fl'
+    version '0.4.7-fl'
 
     // skips building and running for the specified examples
     ext.skipExamples = ['c-simple', 'go-simple', 'rust-regex']

compiler/src/main/kotlin/asmble/run/jvm/Module.kt

@@ -76,6 +76,8 @@ interface Module {
 
             // If there is a memory import, we have to get the one with the mem class as the first
             val memImport = mod.imports.find { it.kind is Node.Import.Kind.Memory }
+            val builder = ctx.memoryBuilder
+
             val memLimit = if (memImport != null) {
                 constructor = cls.declaredConstructors.find { it.parameterTypes.firstOrNull()?.ref == mem.memType }
                 val memImportKind = memImport.kind as Node.Import.Kind.Memory
@@ -89,6 +91,13 @@ interface Module {
                         throw RunErr.ImportMemoryCapacityTooLarge(it * Mem.PAGE_SIZE, memCap)
                 }
                 memLimit
+            } else if (builder != null) {
+                constructor = cls.declaredConstructors.find { it.parameterTypes.firstOrNull()?.ref == mem.memType }
+
+                val memLimit = ctx.defaultMaxMemPages * Mem.PAGE_SIZE
+                val memInst = builder.build(memLimit)
+                constructorParams += memInst
+                memLimit
             } else {
                 // Find the constructor with no max mem amount (i.e. not int and not memory)
                 constructor = cls.declaredConstructors.find {