public static void installBytecode(MethodVisitor method, String classname) {
SkinnyMethodAdapter mv = new SkinnyMethodAdapter(method);
mv.ldc(c(classname));
mv.invokestatic(p(Class.class), "forName", sig(Class.class, params(String.class)));
mv.invokestatic(
p(InvokeDynamicSupport.class), "registerBootstrap", sig(void.class, Class.class));
}
public String getNewField(String type, String name, Object init) {
ClassVisitor cv = getClassVisitor();
// declare the field
cv.visitField(ACC_PRIVATE, name, type, null, null).visitEnd();
if (init != null) {
initMethod.aload(THIS);
initMethod.ldc(init);
initMethod.putfield(getClassname(), name, type);
}
return name;
}
public String getNewConstant(String type, String name_prefix, Object init) {
ClassVisitor cv = getClassVisitor();
String realName = getNewConstantName();
// declare the field
cv.visitField(ACC_PRIVATE, realName, type, null, null).visitEnd();
if (init != null) {
initMethod.aload(THIS);
initMethod.ldc(init);
initMethod.putfield(getClassname(), realName, type);
}
return realName;
}
public void startScript(StaticScope scope) {
classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
// Create the class with the appropriate class name and source file
classWriter.visit(
javaVersion == null ? RubyInstanceConfig.JAVA_VERSION : javaVersion,
ACC_PUBLIC + ACC_SUPER,
getClassname(),
null,
p(AbstractScript.class),
null);
// add setPosition impl, which stores filename as constant to speed updates
SkinnyMethodAdapter method =
new SkinnyMethodAdapter(
getClassVisitor(),
ACC_PRIVATE | ACC_STATIC | ACC_SYNTHETIC,
"setPosition",
sig(Void.TYPE, params(ThreadContext.class, int.class)),
null,
null);
method.start();
method.aload(0); // thread context
method.ldc(sourcename);
method.iload(1); // line number
method.invokevirtual(
p(ThreadContext.class), "setFileAndLine", sig(void.class, String.class, int.class));
method.voidreturn();
method.end();
topLevelScope = scope;
beginInit();
cacheCompiler = OptoFactory.newCacheCompiler(this);
// This code was originally used to provide debugging info using JSR-45
// "SMAP" format. However, it breaks using normal Java traces to
// generate Ruby traces, since the original path is lost. Reverting
// to full path for now.
// String sourceNoPath;
// if (sourcename.indexOf("/") >= 0) {
// String[] pathElements = sourcename.split("/");
// sourceNoPath = pathElements[pathElements.length - 1];
// } else if (sourcename.indexOf("\\") >= 0) {
// String[] pathElements = sourcename.split("\\\\");
// sourceNoPath = pathElements[pathElements.length - 1];
// } else {
// sourceNoPath = sourcename;
// }
final File sourceFile = new File(getSourcename());
// Revert to using original sourcename here, so that jitted traces match
// interpreted traces.
classWriter.visitSource(sourcename, sourceFile.getAbsolutePath());
}
private void beginClassInit() {
ClassVisitor cv = getClassVisitor();
clinitMethod =
new SkinnyMethodAdapter(
cv, ACC_PUBLIC | ACC_STATIC, "<clinit>", sig(Void.TYPE), null, null);
clinitMethod.start();
}
private void beginInit() {
ClassVisitor cv = getClassVisitor();
initMethod = new SkinnyMethodAdapter(cv, ACC_PUBLIC, "<init>", sig(Void.TYPE), null, null);
initMethod.start();
initMethod.aload(THIS);
initMethod.invokespecial(p(AbstractScript.class), "<init>", sig(Void.TYPE));
// JRUBY-3014: make __FILE__ dynamically determined at load time, but
// we provide a reasonable default here
initMethod.aload(THIS);
initMethod.ldc(getSourcename());
initMethod.putfield(getClassname(), "filename", ci(String.class));
}
public BodyCompiler startFileMethod(
CompilerCallback args, StaticScope scope, ASTInspector inspector) {
MethodBodyCompiler methodCompiler =
new MethodBodyCompiler(this, "__file__", "__file__", inspector, scope, 0);
// allocate the 0 StaticScope slot in the cache
int reservedIndex = cacheCompiler.reserveStaticScope();
assert reservedIndex == 0 : "__file__ scope index was not zero";
methodCompiler.beginMethod(args, scope);
// boxed arg list __file__
SkinnyMethodAdapter method =
new SkinnyMethodAdapter(
getClassVisitor(), ACC_PUBLIC, "__file__", getMethodSignature(4), null, null);
method.start();
// invoke static __file__
method.aload(THIS);
method.aload(THREADCONTEXT_INDEX);
method.aload(SELF_INDEX);
method.aload(ARGS_INDEX);
method.aload(ARGS_INDEX + 1); // block
method.invokestatic(getClassname(), "__file__", getStaticMethodSignature(getClassname(), 4));
method.areturn();
method.end();
if (methodCompiler.isSpecificArity()) {
// exact arg list __file__
method =
new SkinnyMethodAdapter(
getClassVisitor(),
ACC_PUBLIC,
"__file__",
getMethodSignature(scope.getRequiredArgs()),
null,
null);
method.start();
// invoke static __file__
method.aload(THIS);
method.aload(THREADCONTEXT_INDEX);
method.aload(SELF_INDEX);
for (int i = 0; i < scope.getRequiredArgs(); i++) {
method.aload(ARGS_INDEX + i);
}
method.aload(ARGS_INDEX + scope.getRequiredArgs()); // block
method.invokestatic(
getClassname(),
"__file__",
getStaticMethodSignature(getClassname(), scope.getRequiredArgs()));
method.areturn();
method.end();
}
return methodCompiler;
}
private void endClassInit() {
if (clinitMethod != null) {
clinitMethod.voidreturn();
clinitMethod.end();
}
}
private void endInit() {
initMethod.voidreturn();
initMethod.end();
}
public void endScript(boolean generateLoad, boolean generateMain) {
// add Script#run impl, used for running this script with a specified threadcontext and self
// root method of a script is always in __file__ method
String methodName = "__file__";
String loadSig = sig(IRubyObject.class, ThreadContext.class, IRubyObject.class, boolean.class);
if (generateLoad || generateMain) {
// the load method is used for loading as a top-level script, and prepares appropriate scoping
// around the code
SkinnyMethodAdapter method =
new SkinnyMethodAdapter(getClassVisitor(), ACC_PUBLIC, "load", loadSig, null, null);
method.start();
// invoke __file__ with threadcontext, self, args (null), and block (null)
Label tryBegin = new Label();
Label tryFinally = new Label();
method.label(tryBegin);
method.aload(THREADCONTEXT_INDEX);
String scopeNames = Helpers.encodeScope(topLevelScope);
method.ldc(scopeNames);
method.iload(SELF_INDEX + 1);
method.invokestatic(
p(Helpers.class),
"preLoad",
sig(StaticScope.class, ThreadContext.class, String.class, boolean.class));
// store root scope
method.aload(THIS);
method.swap();
method.invokevirtual(
p(AbstractScript.class), "setRootScope", sig(void.class, StaticScope.class));
method.aload(THIS);
method.aload(THREADCONTEXT_INDEX);
method.aload(SELF_INDEX);
method.getstatic(p(IRubyObject.class), "NULL_ARRAY", ci(IRubyObject[].class));
method.getstatic(p(Block.class), "NULL_BLOCK", ci(Block.class));
method.invokestatic(getClassname(), methodName, getStaticMethodSignature(getClassname(), 4));
method.aload(THREADCONTEXT_INDEX);
method.invokestatic(p(Helpers.class), "postLoad", sig(void.class, ThreadContext.class));
method.areturn();
method.label(tryFinally);
method.aload(THREADCONTEXT_INDEX);
method.invokestatic(p(Helpers.class), "postLoad", sig(void.class, ThreadContext.class));
method.athrow();
method.trycatch(tryBegin, tryFinally, tryFinally, null);
method.end();
}
if (generateMain) {
// add main impl, used for detached or command-line execution of this script with a new
// runtime
// root method of a script is always in stub0, method0
SkinnyMethodAdapter method =
new SkinnyMethodAdapter(
getClassVisitor(),
ACC_PUBLIC | ACC_STATIC,
"main",
sig(Void.TYPE, params(String[].class)),
null,
null);
method.start();
// init script filename to simple class name in case we don't assign it (null ClassLoader)
method.ldc(getClassname().replaceAll("\\\\.", "/"));
method.astore(1);
// new instance to invoke run against
method.newobj(getClassname());
method.dup();
method.invokespecial(getClassname(), "<init>", sig(Void.TYPE));
// guard against null classloader
method.ldc(Type.getType("L" + getClassname() + ";"));
method.invokevirtual(p(Class.class), "getClassLoader", sig(ClassLoader.class));
Label skip = new Label();
method.ifnull(skip);
// set filename for the loaded script class (JRUBY-4825)
method.dup();
method.ldc(Type.getType("L" + getClassname() + ";"));
method.invokevirtual(p(Class.class), "getClassLoader", sig(ClassLoader.class));
method.ldc(getClassname() + ".class");
method.invokevirtual(p(ClassLoader.class), "getResource", sig(URL.class, String.class));
method.invokevirtual(p(Object.class), "toString", sig(String.class));
method.astore(1);
method.aload(1);
method.invokevirtual(p(AbstractScript.class), "setFilename", sig(void.class, String.class));
// ifnull ClassLoader
method.label(skip);
// instance config for the script run
method.newobj(p(RubyInstanceConfig.class));
method.dup();
method.invokespecial(p(RubyInstanceConfig.class), "<init>", "()V");
// set argv from main's args
method.dup();
method.aload(0);
method.invokevirtual(p(RubyInstanceConfig.class), "setArgv", sig(void.class, String[].class));
// set script filename ($0)
method.dup();
method.aload(1);
method.invokevirtual(
p(RubyInstanceConfig.class), "setScriptFileName", sig(void.class, String.class));
// invoke run with threadcontext and topself
method.invokestatic(p(Ruby.class), "newInstance", sig(Ruby.class, RubyInstanceConfig.class));
method.dup();
method.invokevirtual(RUBY, "getCurrentContext", sig(ThreadContext.class));
method.swap();
method.invokevirtual(RUBY, "getTopSelf", sig(IRubyObject.class));
method.ldc(false);
method.invokevirtual(getClassname(), "load", loadSig);
method.voidreturn();
method.end();
}
getCacheCompiler().finish();
endInit();
endClassInit();
}
public CompiledBlockCallback19 compileBlock19(
ThreadContext context, StandardASMCompiler asmCompiler, final IterNode iterNode) {
final ASTCompiler19 astCompiler = new ASTCompiler19();
final StaticScope scope = iterNode.getScope();
asmCompiler.startScript(scope);
final ArgsNode argsNode = (ArgsNode) iterNode.getVarNode();
// create the closure class and instantiate it
final CompilerCallback closureBody =
new CompilerCallback() {
public void call(BodyCompiler context) {
if (iterNode.getBodyNode() != null) {
astCompiler.compile(iterNode.getBodyNode(), context, true);
} else {
context.loadNil();
}
}
};
// create the closure class and instantiate it
final CompilerCallback closureArgs =
new CompilerCallback() {
public void call(BodyCompiler context) {
// FIXME: This is temporary since the variable compilers assume we want
// args already on stack for assignment. We just pop and continue with
// 1.9 args logic.
context.consumeCurrentValue(); // args value
context.consumeCurrentValue(); // passed block
if (iterNode.getVarNode() != null) {
if (iterNode instanceof LambdaNode) {
final int required = argsNode.getRequiredArgsCount();
final int opt = argsNode.getOptionalArgsCount();
final int rest = argsNode.getRestArg();
context.getVariableCompiler().checkMethodArity(required, opt, rest);
astCompiler.compileMethodArgs(argsNode, context, true);
} else {
astCompiler.compileMethodArgs(argsNode, context, true);
}
}
}
};
ASTInspector inspector = new ASTInspector();
inspector.inspect(iterNode.getBodyNode());
inspector.inspect(iterNode.getVarNode());
NodeType argsNodeId = BlockBody.getArgumentTypeWackyHack(iterNode);
int scopeIndex = asmCompiler.getCacheCompiler().reserveStaticScope();
ChildScopedBodyCompiler closureCompiler =
new ChildScopedBodyCompiler19(
asmCompiler, "__file__", asmCompiler.getClassname(), inspector, scope, scopeIndex);
closureCompiler.beginMethod(argsNodeId == null ? null : closureArgs, scope);
closureBody.call(closureCompiler);
closureCompiler.endBody();
// __file__ method to call static version
SkinnyMethodAdapter method =
new SkinnyMethodAdapter(
asmCompiler.getClassVisitor(),
ACC_PUBLIC,
"__file__",
getMethodSignature(4),
null,
null);
method.start();
// invoke static __file__
method.aload(THIS);
method.aload(THREADCONTEXT_INDEX);
method.aload(SELF_INDEX);
method.aload(ARGS_INDEX);
method.aload(ARGS_INDEX + 1); // block
method.invokestatic(
asmCompiler.getClassname(),
"__file__",
asmCompiler.getStaticMethodSignature(asmCompiler.getClassname(), 4));
method.areturn();
method.end();
asmCompiler.endScript(false, false);
byte[] bytes = asmCompiler.getClassByteArray();
Class blockClass =
new JRubyClassLoader(context.runtime.getJRubyClassLoader())
.defineClass(asmCompiler.getClassname(), bytes);
try {
final AbstractScript script = (AbstractScript) blockClass.newInstance();
script.setRootScope(scope);
return new CompiledBlockCallback19() {
@Override
public IRubyObject call(
ThreadContext context, IRubyObject self, IRubyObject[] args, Block block) {
return script.__file__(context, self, args, block);
}
@Override
public String getFile() {
return iterNode.getPosition().getFile();
}
@Override
public int getLine() {
return iterNode.getPosition().getLine();
}
};
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public CompiledBlockCallback compileBlock(
ThreadContext context, StandardASMCompiler asmCompiler, final IterNode iterNode) {
final ASTCompiler astCompiler = new ASTCompiler();
final StaticScope scope = iterNode.getScope();
asmCompiler.startScript(scope);
// create the closure class and instantiate it
final CompilerCallback closureBody =
new CompilerCallback() {
public void call(BodyCompiler context) {
if (iterNode.getBodyNode() != null) {
astCompiler.compile(iterNode.getBodyNode(), context, true);
} else {
context.loadNil();
}
}
};
// create the closure class and instantiate it
final CompilerCallback closureArgs =
new CompilerCallback() {
public void call(BodyCompiler context) {
if (iterNode.getVarNode() != null) {
astCompiler.compileAssignment(iterNode.getVarNode(), context);
} else {
context.consumeCurrentValue();
}
if (iterNode.getBlockVarNode() != null) {
astCompiler.compileAssignment(iterNode.getBlockVarNode(), context);
} else {
context.consumeCurrentValue();
}
}
};
ASTInspector inspector = new ASTInspector();
inspector.inspect(iterNode.getBodyNode());
inspector.inspect(iterNode.getVarNode());
int scopeIndex = asmCompiler.getCacheCompiler().reserveStaticScope();
ChildScopedBodyCompiler closureCompiler =
new ChildScopedBodyCompiler(
asmCompiler, "__file__", asmCompiler.getClassname(), inspector, scope, scopeIndex);
closureCompiler.beginMethod(closureArgs, scope);
closureBody.call(closureCompiler);
closureCompiler.endBody();
// __file__ method with [] args; no-op
SkinnyMethodAdapter method =
new SkinnyMethodAdapter(
asmCompiler.getClassVisitor(),
ACC_PUBLIC,
"__file__",
getMethodSignature(4),
null,
null);
method.start();
method.aload(SELF_INDEX);
method.areturn();
method.end();
// __file__ method to call static version
method =
new SkinnyMethodAdapter(
asmCompiler.getClassVisitor(),
ACC_PUBLIC,
"__file__",
getMethodSignature(1),
null,
null);
method.start();
// invoke static __file__
method.aload(THIS);
method.aload(THREADCONTEXT_INDEX);
method.aload(SELF_INDEX);
method.aload(ARGS_INDEX);
method.aload(ARGS_INDEX + 1); // block
method.invokestatic(
asmCompiler.getClassname(),
"__file__",
getStaticMethodSignature(asmCompiler.getClassname(), 1));
method.areturn();
method.end();
asmCompiler.endScript(false, false);
byte[] bytes = asmCompiler.getClassByteArray();
Class blockClass =
new JRubyClassLoader(context.runtime.getJRubyClassLoader())
.defineClass(asmCompiler.getClassname(), bytes);
try {
final AbstractScript script = (AbstractScript) blockClass.newInstance();
script.setRootScope(scope);
return new CompiledBlockCallback() {
@Override
public IRubyObject call(
ThreadContext context, IRubyObject self, IRubyObject args, Block block) {
return script.__file__(context, self, args, block);
}
@Override
public String getFile() {
return "blah";
}
@Override
public int getLine() {
return -1;
}
};
} catch (Exception e) {
throw new RuntimeException(e);
}
}