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Fixes #23
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| package asmble.run.jvm | ||
|
|
||
| import asmble.ast.Node | ||
| import asmble.compile.jvm.* | ||
| import asmble.util.Logger | ||
| import org.objectweb.asm.ClassReader | ||
| import org.objectweb.asm.ClassVisitor | ||
| import org.objectweb.asm.Opcodes | ||
|
|
||
| interface ModuleBuilder<T : Module> { | ||
| fun build(imports: Module.ImportResolver, mod: Node.Module, className: String, name: String?): T | ||
|
|
||
| class Compiled( | ||
| val packageName: String = "", | ||
| val logger: Logger = Logger.Print(Logger.Level.OFF), | ||
| val classLoader: SimpleClassLoader = SimpleClassLoader(Compiled::class.java.classLoader, logger), | ||
| val adjustContext: (ClsContext) -> ClsContext = { it }, | ||
| val includeBinaryInCompiledClass: Boolean = false, | ||
| val defaultMaxMemPages: Int = 1 | ||
| ) : ModuleBuilder<Module.Compiled> { | ||
| override fun build( | ||
| imports: Module.ImportResolver, | ||
| mod: Node.Module, | ||
| className: String, | ||
| name: String? | ||
| ): Module.Compiled { | ||
| val ctx = ClsContext( | ||
| packageName = packageName, | ||
| className = className, | ||
| mod = mod, | ||
| logger = logger, | ||
| includeBinary = includeBinaryInCompiledClass | ||
| ).let(adjustContext) | ||
| AstToAsm.fromModule(ctx) | ||
| return Module.Compiled(mod, classLoader.fromBuiltContext(ctx), name, ctx.mem, imports, defaultMaxMemPages) | ||
| } | ||
|
|
||
| open class SimpleClassLoader( | ||
| parent: ClassLoader, | ||
| logger: Logger, | ||
| val splitWhenTooLarge: Boolean = true | ||
| ) : ClassLoader(parent), Logger by logger { | ||
| fun fromBuiltContext(ctx: ClsContext): Class<*> { | ||
| trace { "Computing frames for ASM class:\n" + ctx.cls.toAsmString() } | ||
| val writer = if (splitWhenTooLarge) AsmToBinary else AsmToBinary.noSplit | ||
| return writer.fromClassNode(ctx.cls).let { bytes -> | ||
| debug { "ASM class:\n" + bytes.asClassNode().toAsmString() } | ||
| val prefix = if (ctx.packageName.isNotEmpty()) ctx.packageName + "." else "" | ||
| defineClass("$prefix${ctx.className}", bytes, 0, bytes.size) | ||
| } | ||
| } | ||
|
|
||
| fun addClass(bytes: ByteArray) { | ||
| // Just get the name | ||
| var className = "" | ||
| ClassReader(bytes).accept(object : ClassVisitor(Opcodes.ASM5) { | ||
| override fun visit(a: Int, b: Int, name: String, c: String?, d: String?, e: Array<out String>?) { | ||
| className = name.replace('/', '.') | ||
| } | ||
| }, ClassReader.SKIP_CODE) | ||
| defineClass(className, bytes, 0, bytes.size) | ||
| } | ||
| } | ||
| } | ||
| } |
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