1522 lines
50 KiB
Rust
1522 lines
50 KiB
Rust
//! ActionScript Virtual Machine 2 (AS3) support
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use crate::avm2::activation::{Activation, Avm2ScriptEntry};
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use crate::avm2::function::{Avm2ClassEntry, Avm2MethodEntry, FunctionObject};
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use crate::avm2::globals::SystemPrototypes;
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use crate::avm2::names::{Multiname, Namespace, QName};
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use crate::avm2::object::{Object, TObject};
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use crate::avm2::return_value::ReturnValue;
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use crate::avm2::scope::Scope;
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use crate::avm2::script_object::ScriptObject;
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use crate::avm2::value::Value;
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use crate::context::UpdateContext;
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use crate::tag_utils::SwfSlice;
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use gc_arena::{Collect, GcCell, MutationContext};
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use std::io::Cursor;
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use std::rc::Rc;
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use swf::avm2::read::Reader;
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use swf::avm2::types::{
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AbcFile, Class as AbcClass, Index, Method as AbcMethod, MethodBody, Multiname as AbcMultiname,
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Namespace as AbcNamespace, Op, Script as AbcScript,
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};
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use swf::read::SwfRead;
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#[macro_export]
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macro_rules! avm_debug {
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($($arg:tt)*) => (
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#[cfg(feature = "avm_debug")]
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log::debug!($($arg)*)
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)
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}
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mod activation;
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mod function;
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mod globals;
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mod names;
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mod object;
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mod property;
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mod return_value;
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mod scope;
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mod script_object;
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mod slot;
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mod value;
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/// Boxed error alias.
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///
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/// As AVM2 is a far stricter VM than AVM1, this may eventually be replaced
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/// with a proper Avm2Error enum.
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type Error = Box<dyn std::error::Error>;
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/// The state of an AVM2 interpreter.
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#[derive(Collect)]
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#[collect(no_drop)]
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pub struct Avm2<'gc> {
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/// All activation records for the current interpreter.
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stack_frames: Vec<GcCell<'gc, Activation<'gc>>>,
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/// Values currently present on the operand stack.
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stack: Vec<Value<'gc>>,
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/// Global scope object.
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globals: Object<'gc>,
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/// System prototypes.
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system_prototypes: SystemPrototypes<'gc>,
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}
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impl<'gc> Avm2<'gc> {
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/// Construct a new AVM interpreter.
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pub fn new(mc: MutationContext<'gc, '_>) -> Self {
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let (globals, system_prototypes) = globals::construct_global_scope(mc);
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Self {
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stack_frames: Vec::new(),
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stack: Vec::new(),
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globals,
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system_prototypes,
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}
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}
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/// Return the current set of system prototypes.
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pub fn prototypes(&self) -> &SystemPrototypes<'gc> {
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&self.system_prototypes
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}
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/// Load an ABC file embedded in a `SwfSlice`.
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///
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/// The `SwfSlice` must resolve to the contents of an ABC file.
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pub fn load_abc(
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&mut self,
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abc: SwfSlice,
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_abc_name: &str,
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_lazy_init: bool,
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context: &mut UpdateContext<'_, 'gc, '_>,
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) -> Result<(), Error> {
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let mut read = Reader::new(abc.as_ref());
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let abc_file = Rc::new(read.read()?);
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for i in (0..abc_file.scripts.len()).rev() {
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let entrypoint_script: Index<AbcScript> = Index::new(i as u32);
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let entrypoint: Result<Avm2ScriptEntry, Error> =
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Avm2ScriptEntry::from_script_index(abc_file.clone(), entrypoint_script.clone())
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.ok_or_else(|| {
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format!("Script method {} does not exist", entrypoint_script.0).into()
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});
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let entrypoint = entrypoint?;
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let scope = Scope::push_scope(None, self.globals(), context.gc_context);
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for trait_entry in entrypoint.script().traits.iter() {
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self.globals().install_foreign_trait(
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self,
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context,
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abc_file.clone(),
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trait_entry,
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Some(scope),
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self.globals(),
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)?;
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}
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self.insert_stack_frame_for_script(context, entrypoint)?;
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}
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Ok(())
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}
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pub fn globals(&self) -> Object<'gc> {
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self.globals
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}
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/// Get the current stack frame (`Activation` object).
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pub fn current_stack_frame(&self) -> Option<GcCell<'gc, Activation<'gc>>> {
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self.stack_frames.last().copied()
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}
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/// Add a new stack frame to the stack, which can represent any particular
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/// operation you like that needs to execute AVM2 code.
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pub fn insert_stack_frame(&mut self, frame: GcCell<'gc, Activation<'gc>>) {
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self.stack_frames.push(frame)
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}
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/// Add a new stack frame for executing an entrypoint script.
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pub fn insert_stack_frame_for_script(
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&mut self,
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context: &mut UpdateContext<'_, 'gc, '_>,
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script: Avm2ScriptEntry,
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) -> Result<(), Error> {
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self.stack_frames.push(GcCell::allocate(
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context.gc_context,
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Activation::from_script(context, script, self.globals)?,
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));
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Ok(())
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}
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/// Destroy the current stack frame (if there is one) with a return value.
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///
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/// The given return value will be pushed on the stack if there is a
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/// function to return it to. Otherwise, it will be discarded.
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///
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/// NOTE: This means that if you are starting a brand new AVM stack just to
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/// get it's return value, you won't get that value. Instead, retain a cell
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/// referencing the oldest activation frame and use that to retrieve the
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/// return value.
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fn retire_stack_frame(
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&mut self,
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context: &mut UpdateContext<'_, 'gc, '_>,
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return_value: Value<'gc>,
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) -> Result<(), Error> {
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if let Some(frame) = self.current_stack_frame() {
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self.stack_frames.pop();
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let can_return = !self.stack_frames.is_empty();
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if can_return {
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frame
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.write(context.gc_context)
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.set_return_value(return_value.clone());
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self.push(return_value);
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}
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}
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Ok(())
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}
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/// Destroy the current stack frame (if there is one) with an exception.
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///
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/// TODO: This function should allow exception recovery at some point in
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/// the future.
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///
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/// NOTE: This means that if you are starting a brand new AVM stack just to
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/// get it's return value, you won't get that value. Instead, retain a cell
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/// referencing the oldest activation frame and use that to retrieve the
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/// return value.
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fn unwind_stack_frame(&mut self) {
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if let Some(_frame) = self.current_stack_frame() {
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self.stack_frames.pop();
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}
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}
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/// Perform some action with the current stack frame's reader.
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///
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/// This function constructs a reader based off the current stack frame's
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/// reader. You are permitted to mutate the stack frame as you wish. If the
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/// stack frame we started with still exists in the same location on the
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/// stack, it's PC will be updated to the Reader's current PC.
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///
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/// Stack frame identity (for the purpose of the above paragraph) is
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/// determined by the data pointed to by the `SwfSlice` of a given frame.
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///
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/// # Warnings
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///
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/// It is incorrect to call this function multiple times in the same stack.
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/// Doing so will result in any changes in duplicate readers being ignored.
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/// Always pass the borrowed reader into functions that need it.
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pub fn with_current_reader_mut<F, R>(
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&mut self,
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context: &mut UpdateContext<'_, 'gc, '_>,
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func: F,
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) -> Result<R, Error>
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where
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F: FnOnce(
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&mut Self,
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&mut Reader<Cursor<&[u8]>>,
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&mut UpdateContext<'_, 'gc, '_>,
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) -> Result<R, Error>,
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{
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let (abc, frame_cell, method_body_index, pc) = {
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let frame = self
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.current_stack_frame()
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.ok_or("No stack frame to read!")?;
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let mut frame_ref = frame.write(context.gc_context);
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frame_ref.lock()?;
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let method = frame_ref.method();
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let abc = method.abc.as_ref().clone();
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let _method_index = method.abc_method;
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let method_body_index = method.abc_method_body as usize;
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(abc, frame, method_body_index, frame_ref.pc())
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};
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let method_body: Result<&MethodBody, Error> =
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abc.method_bodies.get(method_body_index).ok_or_else(|| {
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"Attempting to execute a method that does not exist"
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.to_string()
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.into()
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});
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let cursor = Cursor::new(method_body?.code.as_ref());
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let mut read = Reader::new(cursor);
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read.get_inner().set_position(pc as u64);
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let r = func(self, &mut read, context);
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let mut frame_ref = frame_cell.write(context.gc_context);
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frame_ref.unlock_execution();
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frame_ref.set_pc(read.get_inner().position() as usize);
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r
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}
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/// Execute the AVM stack until it is exhausted.
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pub fn run_stack_till_empty(
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&mut self,
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context: &mut UpdateContext<'_, 'gc, '_>,
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) -> Result<(), Error> {
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while !self.stack_frames.is_empty() {
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self.with_current_reader_mut(context, |this, r, context| {
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this.do_next_opcode(context, r)
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})?;
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}
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// Operand stack should be empty at this point.
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// This is probably a bug on our part,
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// although bytecode could in theory leave data on the stack.
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if !self.stack.is_empty() {
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log::warn!("Operand stack is not empty after execution");
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self.stack.clear();
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}
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Ok(())
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}
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/// Execute the AVM stack until a given activation returns.
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pub fn run_current_frame(
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&mut self,
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context: &mut UpdateContext<'_, 'gc, '_>,
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stop_frame: GcCell<'gc, Activation<'gc>>,
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) -> Result<(), Error> {
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let mut stop_frame_id = None;
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for (index, frame) in self.stack_frames.iter().enumerate() {
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if GcCell::ptr_eq(stop_frame, *frame) {
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stop_frame_id = Some(index);
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}
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}
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if let Some(stop_frame_id) = stop_frame_id {
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while self
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.stack_frames
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.get(stop_frame_id)
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.map(|fr| GcCell::ptr_eq(stop_frame, *fr))
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.unwrap_or(false)
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{
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self.with_current_reader_mut(context, |this, r, context| {
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this.do_next_opcode(context, r)
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})?;
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}
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Ok(())
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} else {
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Err("Attempted to run a frame not on the current interpreter stack".into())
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}
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}
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/// Push a value onto the operand stack.
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fn push(&mut self, value: impl Into<Value<'gc>>) {
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let value = value.into();
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avm_debug!("Stack push {}: {:?}", self.stack.len(), value);
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self.stack.push(value);
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}
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/// Retrieve the top-most value on the operand stack.
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#[allow(clippy::let_and_return)]
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fn pop(&mut self) -> Value<'gc> {
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let value = self.stack.pop().unwrap_or_else(|| {
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log::warn!("Avm1::pop: Stack underflow");
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Value::Undefined
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});
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avm_debug!("Stack pop {}: {:?}", self.stack.len(), value);
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value
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}
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fn pop_args(&mut self, arg_count: u32) -> Vec<Value<'gc>> {
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let mut args = Vec::with_capacity(arg_count as usize);
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args.resize(arg_count as usize, Value::Undefined);
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for arg in args.iter_mut().rev() {
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*arg = self.pop();
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}
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args
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}
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fn register_value(&self, index: u32) -> Result<Value<'gc>, Error> {
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self.current_stack_frame()
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.and_then(|sf| sf.read().local_register(index))
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.ok_or_else(|| format!("Out of bounds register read: {}", index).into())
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}
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fn set_register_value(
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&mut self,
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context: &mut UpdateContext<'_, 'gc, '_>,
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index: u32,
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value: impl Into<Value<'gc>>,
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) -> Result<(), Error> {
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match self.current_stack_frame().map(|sf| {
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sf.write(context.gc_context)
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.set_local_register(index, value, context.gc_context)
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}) {
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Some(true) => Ok(()),
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_ => Err(format!("Out of bounds register write: {}", index).into()),
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}
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}
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/// Retrieve the current constant pool for the currently executing function.
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fn current_abc(&self) -> Option<Rc<AbcFile>> {
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self.current_stack_frame()
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.map(|sf| sf.read().method().abc.clone())
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}
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/// Retrieve a int from the current constant pool.
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fn pool_int(&self, index: Index<i32>) -> Result<i32, Error> {
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value::abc_int(&self.current_abc().unwrap(), index)
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}
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/// Retrieve a int from the current constant pool.
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fn pool_uint(&self, index: Index<u32>) -> Result<u32, Error> {
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value::abc_uint(&self.current_abc().unwrap(), index)
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}
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/// Retrieve a double from the current constant pool.
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fn pool_double(&self, index: Index<f64>) -> Result<f64, Error> {
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value::abc_double(&self.current_abc().unwrap(), index)
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}
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/// Retrieve a string from the current constant pool.
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fn pool_string(&self, index: Index<String>) -> Result<String, Error> {
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value::abc_string(&self.current_abc().unwrap(), index)
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}
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/// Retrieve a namespace from the current constant pool.
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fn pool_namespace(&self, index: Index<AbcNamespace>) -> Result<Namespace, Error> {
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Namespace::from_abc_namespace(&self.current_abc().unwrap(), index)
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}
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/// Retrieve a multiname from the current constant pool.
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fn pool_multiname(&mut self, index: Index<AbcMultiname>) -> Result<Multiname, Error> {
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Multiname::from_abc_multiname(&self.current_abc().unwrap(), index, self)
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}
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/// Retrieve a static, or non-runtime, multiname from the current constant
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/// pool.
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fn pool_multiname_static(&mut self, index: Index<AbcMultiname>) -> Result<Multiname, Error> {
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Multiname::from_abc_multiname_static(&self.current_abc().unwrap(), index)
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}
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/// Retrieve a method entry from the current ABC file's method table.
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fn table_method(&mut self, index: Index<AbcMethod>) -> Result<Avm2MethodEntry, Error> {
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Avm2MethodEntry::from_method_index(self.current_abc().unwrap(), index.clone())
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.ok_or_else(|| format!("Method index {} does not exist", index.0).into())
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}
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/// Retrieve a class entry from the current ABC file's method table.
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fn table_class(&mut self, index: Index<AbcClass>) -> Result<Avm2ClassEntry, Error> {
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Avm2ClassEntry::from_class_index(self.current_abc().unwrap(), index.clone())
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.ok_or_else(|| format!("Class index {} does not exist", index.0).into())
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}
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/// Run a single action from a given action reader.
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pub fn do_next_opcode(
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&mut self,
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context: &mut UpdateContext<'_, 'gc, '_>,
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reader: &mut Reader<Cursor<&[u8]>>,
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) -> Result<(), Error> {
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let op = reader.read_op();
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if let Ok(Some(op)) = op {
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avm_debug!("Opcode: {:?}", op);
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let result = match op {
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Op::PushByte { value } => self.op_push_byte(value),
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Op::PushDouble { value } => self.op_push_double(value),
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Op::PushFalse => self.op_push_false(),
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Op::PushInt { value } => self.op_push_int(value),
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Op::PushNamespace { value } => self.op_push_namespace(value),
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Op::PushNaN => self.op_push_nan(),
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Op::PushNull => self.op_push_null(),
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Op::PushShort { value } => self.op_push_short(value),
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Op::PushString { value } => self.op_push_string(value),
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Op::PushTrue => self.op_push_true(),
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Op::PushUint { value } => self.op_push_uint(value),
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Op::PushUndefined => self.op_push_undefined(),
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Op::Pop => self.op_pop(),
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Op::Dup => self.op_dup(),
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Op::GetLocal { index } => self.op_get_local(index),
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Op::SetLocal { index } => self.op_set_local(context, index),
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Op::Kill { index } => self.op_kill(context, index),
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Op::Call { num_args } => self.op_call(context, num_args),
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Op::CallMethod { index, num_args } => self.op_call_method(context, index, num_args),
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Op::CallProperty { index, num_args } => {
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self.op_call_property(context, index, num_args)
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}
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Op::CallPropLex { index, num_args } => {
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self.op_call_prop_lex(context, index, num_args)
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}
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Op::CallPropVoid { index, num_args } => {
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self.op_call_prop_void(context, index, num_args)
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}
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Op::CallStatic { index, num_args } => self.op_call_static(context, index, num_args),
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Op::CallSuper { index, num_args } => self.op_call_super(context, index, num_args),
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Op::CallSuperVoid { index, num_args } => {
|
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self.op_call_super_void(context, index, num_args)
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}
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Op::ReturnValue => self.op_return_value(context),
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Op::ReturnVoid => self.op_return_void(context),
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Op::GetProperty { index } => self.op_get_property(context, index),
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Op::SetProperty { index } => self.op_set_property(context, index),
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Op::InitProperty { index } => self.op_init_property(context, index),
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Op::DeleteProperty { index } => self.op_delete_property(context, index),
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Op::GetSuper { index } => self.op_get_super(context, index),
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Op::SetSuper { index } => self.op_set_super(context, index),
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Op::PushScope => self.op_push_scope(context),
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Op::PushWith => self.op_push_with(context),
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Op::PopScope => self.op_pop_scope(context),
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Op::GetScopeObject { index } => self.op_get_scope_object(index),
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Op::GetGlobalScope => self.op_get_global_scope(),
|
|
Op::FindProperty { index } => self.op_find_property(context, index),
|
|
Op::FindPropStrict { index } => self.op_find_prop_strict(context, index),
|
|
Op::GetLex { index } => self.op_get_lex(context, index),
|
|
Op::GetSlot { index } => self.op_get_slot(index),
|
|
Op::SetSlot { index } => self.op_set_slot(context, index),
|
|
Op::GetGlobalSlot { index } => self.op_get_global_slot(index),
|
|
Op::SetGlobalSlot { index } => self.op_set_global_slot(context, index),
|
|
Op::Construct { num_args } => self.op_construct(context, num_args),
|
|
Op::ConstructProp { index, num_args } => {
|
|
self.op_construct_prop(context, index, num_args)
|
|
}
|
|
Op::ConstructSuper { num_args } => self.op_construct_super(context, num_args),
|
|
Op::NewActivation => self.op_new_activation(context),
|
|
Op::NewObject { num_args } => self.op_new_object(context, num_args),
|
|
Op::NewFunction { index } => self.op_new_function(context, index),
|
|
Op::NewClass { index } => self.op_new_class(context, index),
|
|
Op::CoerceA => self.op_coerce_a(),
|
|
Op::Jump { offset } => self.op_jump(offset, reader),
|
|
Op::IfTrue { offset } => self.op_if_true(offset, reader),
|
|
Op::IfFalse { offset } => self.op_if_false(offset, reader),
|
|
Op::IfStrictEq { offset } => self.op_if_strict_eq(offset, reader),
|
|
Op::IfStrictNe { offset } => self.op_if_strict_ne(offset, reader),
|
|
Op::StrictEquals => self.op_strict_equals(),
|
|
Op::HasNext => self.op_has_next(),
|
|
Op::HasNext2 {
|
|
object_register,
|
|
index_register,
|
|
} => self.op_has_next_2(context, object_register, index_register),
|
|
Op::NextName => self.op_next_name(),
|
|
Op::NextValue => self.op_next_value(context),
|
|
Op::Label => Ok(()),
|
|
Op::Debug {
|
|
is_local_register,
|
|
register_name,
|
|
register,
|
|
} => self.op_debug(is_local_register, register_name, register),
|
|
Op::DebugFile { file_name } => self.op_debug_file(file_name),
|
|
Op::DebugLine { line_num } => self.op_debug_line(line_num),
|
|
_ => self.unknown_op(op),
|
|
};
|
|
|
|
if let Err(ref e) = result {
|
|
log::error!("AVM2 error: {}", e);
|
|
self.unwind_stack_frame();
|
|
return result;
|
|
}
|
|
} else if let Ok(None) = op {
|
|
log::error!("Unknown opcode!");
|
|
self.unwind_stack_frame();
|
|
return Err("Unknown opcode!".into());
|
|
} else if let Err(e) = op {
|
|
log::error!("Parse error: {:?}", e);
|
|
self.unwind_stack_frame();
|
|
return Err(e.into());
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn unknown_op(&mut self, op: swf::avm2::types::Op) -> Result<(), Error> {
|
|
log::error!("Unknown AVM2 opcode: {:?}", op);
|
|
Err("Unknown op".into())
|
|
}
|
|
|
|
fn op_push_byte(&mut self, value: u8) -> Result<(), Error> {
|
|
self.push(value);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_double(&mut self, value: Index<f64>) -> Result<(), Error> {
|
|
self.push(self.pool_double(value)?);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_false(&mut self) -> Result<(), Error> {
|
|
self.push(false);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_int(&mut self, value: Index<i32>) -> Result<(), Error> {
|
|
self.push(self.pool_int(value)?);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_namespace(&mut self, value: Index<AbcNamespace>) -> Result<(), Error> {
|
|
self.push(self.pool_namespace(value)?);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_nan(&mut self) -> Result<(), Error> {
|
|
self.push(std::f64::NAN);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_null(&mut self) -> Result<(), Error> {
|
|
self.push(Value::Null);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_short(&mut self, value: u32) -> Result<(), Error> {
|
|
self.push(value);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_string(&mut self, value: Index<String>) -> Result<(), Error> {
|
|
self.push(self.pool_string(value)?);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_true(&mut self) -> Result<(), Error> {
|
|
self.push(true);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_uint(&mut self, value: Index<u32>) -> Result<(), Error> {
|
|
self.push(self.pool_uint(value)?);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_undefined(&mut self) -> Result<(), Error> {
|
|
self.push(Value::Undefined);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_pop(&mut self) -> Result<(), Error> {
|
|
self.pop();
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_dup(&mut self) -> Result<(), Error> {
|
|
self.push(self.stack.last().cloned().unwrap_or(Value::Undefined));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_get_local(&mut self, register_index: u32) -> Result<(), Error> {
|
|
self.push(self.register_value(register_index)?);
|
|
Ok(())
|
|
}
|
|
|
|
fn op_set_local(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
register_index: u32,
|
|
) -> Result<(), Error> {
|
|
let value = self.pop();
|
|
self.set_register_value(context, register_index, value)
|
|
}
|
|
|
|
fn op_kill(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
register_index: u32,
|
|
) -> Result<(), Error> {
|
|
self.set_register_value(context, register_index, Value::Undefined)
|
|
}
|
|
|
|
fn op_call(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let receiver = self.pop().as_object().ok();
|
|
let function = self.pop().as_object()?;
|
|
let base_proto = receiver.and_then(|r| r.proto());
|
|
let value = function.call(receiver, &args, self, context, base_proto)?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_call_method(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMethod>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let receiver = self.pop().as_object()?;
|
|
let function: Result<Object<'gc>, Error> = receiver
|
|
.get_method(index.0)
|
|
.ok_or_else(|| format!("Object method {} does not exist", index.0).into());
|
|
let base_proto = receiver.proto();
|
|
let value = function?.call(Some(receiver), &args, self, context, base_proto)?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_call_property(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let multiname = self.pool_multiname(index)?;
|
|
let mut receiver = self.pop().as_object()?;
|
|
let name: Result<QName, Error> = receiver
|
|
.resolve_multiname(&multiname)?
|
|
.ok_or_else(|| format!("Could not find method {:?}", multiname.local_name()).into());
|
|
let name = name?;
|
|
let base_proto = receiver.get_base_proto(&name)?;
|
|
let function = receiver
|
|
.get_property(receiver, &name, self, context)?
|
|
.as_object()?;
|
|
let value = function.call(Some(receiver), &args, self, context, base_proto)?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_call_prop_lex(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let multiname = self.pool_multiname(index)?;
|
|
let mut receiver = self.pop().as_object()?;
|
|
let name: Result<QName, Error> = receiver
|
|
.resolve_multiname(&multiname)?
|
|
.ok_or_else(|| format!("Could not find method {:?}", multiname.local_name()).into());
|
|
let function = receiver
|
|
.get_property(receiver, &name?, self, context)?
|
|
.as_object()?;
|
|
let value = function.call(None, &args, self, context, None)?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_call_prop_void(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let multiname = self.pool_multiname(index)?;
|
|
let mut receiver = self.pop().as_object()?;
|
|
let name: Result<QName, Error> = receiver
|
|
.resolve_multiname(&multiname)?
|
|
.ok_or_else(|| format!("Could not find method {:?}", multiname.local_name()).into());
|
|
let name = name?;
|
|
let base_proto = receiver.get_base_proto(&name)?;
|
|
let function = receiver
|
|
.get_property(receiver, &name, self, context)?
|
|
.as_object()?;
|
|
|
|
function.call(Some(receiver), &args, self, context, base_proto)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_call_static(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMethod>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let receiver = self.pop().as_object()?;
|
|
let method = self.table_method(index)?;
|
|
let scope = self.current_stack_frame().unwrap().read().scope(); //TODO: Is this correct?
|
|
let function = FunctionObject::from_abc_method(
|
|
context.gc_context,
|
|
method,
|
|
scope,
|
|
self.system_prototypes.function,
|
|
None,
|
|
);
|
|
let value = function.call(Some(receiver), &args, self, context, receiver.proto())?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_call_super(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let multiname = self.pool_multiname(index)?;
|
|
let receiver = self.pop().as_object()?;
|
|
let name: Result<QName, Error> = receiver
|
|
.resolve_multiname(&multiname)?
|
|
.ok_or_else(|| format!("Could not find method {:?}", multiname.local_name()).into());
|
|
let base_proto: Result<Object<'gc>, Error> = self
|
|
.current_stack_frame()
|
|
.unwrap()
|
|
.read()
|
|
.base_proto()
|
|
.and_then(|bp| bp.proto())
|
|
.ok_or_else(|| {
|
|
"Attempted to call super method without a superclass."
|
|
.to_string()
|
|
.into()
|
|
});
|
|
let base_proto = base_proto?;
|
|
let mut base = base_proto.construct(self, context, &[])?; //TODO: very hacky workaround
|
|
|
|
let function = base
|
|
.get_property(receiver, &name?, self, context)?
|
|
.as_object()?;
|
|
|
|
let value = function.call(Some(receiver), &args, self, context, Some(base_proto))?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_call_super_void(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let multiname = self.pool_multiname(index)?;
|
|
let receiver = self.pop().as_object()?;
|
|
let name: Result<QName, Error> = receiver
|
|
.resolve_multiname(&multiname)?
|
|
.ok_or_else(|| format!("Could not find method {:?}", multiname.local_name()).into());
|
|
let base_proto: Result<Object<'gc>, Error> = self
|
|
.current_stack_frame()
|
|
.unwrap()
|
|
.read()
|
|
.base_proto()
|
|
.and_then(|bp| bp.proto())
|
|
.ok_or_else(|| {
|
|
"Attempted to call super method without a superclass."
|
|
.to_string()
|
|
.into()
|
|
});
|
|
let base_proto = base_proto?;
|
|
let mut base = base_proto.construct(self, context, &[])?; //TODO: very hacky workaround
|
|
|
|
let function = base
|
|
.get_property(receiver, &name?, self, context)?
|
|
.as_object()?;
|
|
|
|
function.call(Some(receiver), &args, self, context, Some(base_proto))?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_return_value(&mut self, context: &mut UpdateContext<'_, 'gc, '_>) -> Result<(), Error> {
|
|
let return_value = self.pop();
|
|
|
|
self.retire_stack_frame(context, return_value)
|
|
}
|
|
|
|
fn op_return_void(&mut self, context: &mut UpdateContext<'_, 'gc, '_>) -> Result<(), Error> {
|
|
self.retire_stack_frame(context, Value::Undefined)
|
|
}
|
|
|
|
fn op_get_property(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let multiname = self.pool_multiname(index)?;
|
|
let mut object = self.pop().as_object()?;
|
|
|
|
let name: Result<QName, Error> = object.resolve_multiname(&multiname)?.ok_or_else(|| {
|
|
format!("Could not resolve property {:?}", multiname.local_name()).into()
|
|
});
|
|
|
|
let value = object.get_property(object, &name?, self, context)?;
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_set_property(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let value = self.pop();
|
|
let multiname = self.pool_multiname(index)?;
|
|
let mut object = self.pop().as_object()?;
|
|
|
|
if let Some(name) = object.resolve_multiname(&multiname)? {
|
|
object.set_property(object, &name, value, self, context)
|
|
} else {
|
|
//TODO: Non-dynamic objects should fail
|
|
//TODO: This should only work if the public namespace is present
|
|
let local_name: Result<&str, Error> = multiname
|
|
.local_name()
|
|
.ok_or_else(|| "Cannot set property using any name".into());
|
|
let name = QName::dynamic_name(local_name?);
|
|
object.set_property(object, &name, value, self, context)
|
|
}
|
|
}
|
|
|
|
fn op_init_property(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let value = self.pop();
|
|
let multiname = self.pool_multiname(index)?;
|
|
let mut object = self.pop().as_object()?;
|
|
|
|
if let Some(name) = object.resolve_multiname(&multiname)? {
|
|
object.init_property(object, &name, value, self, context)
|
|
} else {
|
|
//TODO: Non-dynamic objects should fail
|
|
//TODO: This should only work if the public namespace is present
|
|
let local_name: Result<&str, Error> = multiname
|
|
.local_name()
|
|
.ok_or_else(|| "Cannot set property using any name".into());
|
|
let name = QName::dynamic_name(local_name?);
|
|
object.init_property(object, &name, value, self, context)
|
|
}
|
|
}
|
|
|
|
fn op_delete_property(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let multiname = self.pool_multiname(index)?;
|
|
let object = self.pop().as_object()?;
|
|
|
|
if let Some(name) = object.resolve_multiname(&multiname)? {
|
|
self.push(object.delete_property(context.gc_context, &name))
|
|
} else {
|
|
self.push(false)
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_get_super(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let multiname = self.pool_multiname(index)?;
|
|
let object = self.pop().as_object()?;
|
|
let base_proto: Result<Object<'gc>, Error> = self
|
|
.current_stack_frame()
|
|
.unwrap()
|
|
.read()
|
|
.base_proto()
|
|
.and_then(|p| p.proto())
|
|
.ok_or_else(|| "Attempted to get property on non-existent super object".into());
|
|
let base_proto = base_proto?;
|
|
let mut base = base_proto.construct(self, context, &[])?; //TODO: very hacky workaround
|
|
|
|
let name: Result<QName, Error> = base.resolve_multiname(&multiname)?.ok_or_else(|| {
|
|
format!(
|
|
"Could not resolve {:?} as super property",
|
|
multiname.local_name()
|
|
)
|
|
.into()
|
|
});
|
|
|
|
let value = base.get_property(object, &name?, self, context)?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_set_super(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let value = self.pop();
|
|
let multiname = self.pool_multiname(index)?;
|
|
let object = self.pop().as_object()?;
|
|
let base_proto: Result<Object<'gc>, Error> = self
|
|
.current_stack_frame()
|
|
.unwrap()
|
|
.read()
|
|
.base_proto()
|
|
.and_then(|p| p.proto())
|
|
.ok_or_else(|| "Attempted to get property on non-existent super object".into());
|
|
let base_proto = base_proto?;
|
|
let mut base = base_proto.construct(self, context, &[])?; //TODO: very hacky workaround
|
|
|
|
let name: Result<QName, Error> = base.resolve_multiname(&multiname)?.ok_or_else(|| {
|
|
format!(
|
|
"Could not resolve {:?} as super property",
|
|
multiname.local_name()
|
|
)
|
|
.into()
|
|
});
|
|
|
|
base.set_property(object, &name?, value, self, context)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_scope(&mut self, context: &mut UpdateContext<'_, 'gc, '_>) -> Result<(), Error> {
|
|
let object = self.pop().as_object()?;
|
|
let activation = self.current_stack_frame().unwrap();
|
|
let mut write = activation.write(context.gc_context);
|
|
let scope_stack = write.scope();
|
|
let new_scope = Scope::push_scope(scope_stack, object, context.gc_context);
|
|
|
|
write.set_scope(Some(new_scope));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_push_with(&mut self, context: &mut UpdateContext<'_, 'gc, '_>) -> Result<(), Error> {
|
|
let object = self.pop().as_object()?;
|
|
let activation = self.current_stack_frame().unwrap();
|
|
let mut write = activation.write(context.gc_context);
|
|
let scope_stack = write.scope();
|
|
let new_scope = Scope::push_with(scope_stack, object, context.gc_context);
|
|
|
|
write.set_scope(Some(new_scope));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_pop_scope(&mut self, context: &mut UpdateContext<'_, 'gc, '_>) -> Result<(), Error> {
|
|
let activation = self.current_stack_frame().unwrap();
|
|
let mut write = activation.write(context.gc_context);
|
|
let scope_stack = write.scope();
|
|
let new_scope = scope_stack.and_then(|s| s.read().pop_scope());
|
|
|
|
write.set_scope(new_scope);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_get_scope_object(&mut self, mut index: u8) -> Result<(), Error> {
|
|
let mut scope = self.current_stack_frame().unwrap().read().scope();
|
|
|
|
while index > 0 {
|
|
if let Some(child_scope) = scope {
|
|
scope = child_scope.read().parent_cell();
|
|
}
|
|
|
|
index -= 1;
|
|
}
|
|
|
|
self.push(
|
|
scope
|
|
.map(|s| s.read().locals().clone().into())
|
|
.unwrap_or(Value::Undefined),
|
|
);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_get_global_scope(&mut self) -> Result<(), Error> {
|
|
let mut scope = self.current_stack_frame().unwrap().read().scope();
|
|
|
|
while let Some(this_scope) = scope {
|
|
let parent = this_scope.read().parent_cell();
|
|
if parent.is_none() {
|
|
break;
|
|
}
|
|
|
|
scope = parent;
|
|
}
|
|
|
|
self.push(
|
|
scope
|
|
.map(|s| s.read().locals().clone().into())
|
|
.unwrap_or(Value::Undefined),
|
|
);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_find_property(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let multiname = self.pool_multiname(index)?;
|
|
avm_debug!("Resolving {:?}", multiname);
|
|
let result = if let Some(scope) = self.current_stack_frame().unwrap().read().scope() {
|
|
scope.read().find(&multiname, self, context)?
|
|
} else {
|
|
None
|
|
};
|
|
|
|
self.push(result.map(|o| o.into()).unwrap_or(Value::Undefined));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_find_prop_strict(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let multiname = self.pool_multiname(index)?;
|
|
avm_debug!("Resolving {:?}", multiname);
|
|
let found: Result<Object<'gc>, Error> =
|
|
if let Some(scope) = self.current_stack_frame().unwrap().read().scope() {
|
|
scope.read().find(&multiname, self, context)?
|
|
} else {
|
|
None
|
|
}
|
|
.ok_or_else(|| format!("Property does not exist: {:?}", multiname.local_name()).into());
|
|
let result: Value<'gc> = found?.into();
|
|
|
|
self.push(result);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_get_lex(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
) -> Result<(), Error> {
|
|
let multiname = self.pool_multiname_static(index)?;
|
|
avm_debug!("Resolving {:?}", multiname);
|
|
let found: Result<ReturnValue<'gc>, Error> =
|
|
if let Some(scope) = self.current_stack_frame().unwrap().read().scope() {
|
|
scope
|
|
.write(context.gc_context)
|
|
.resolve(&multiname, self, context)?
|
|
} else {
|
|
None
|
|
}
|
|
.ok_or_else(|| format!("Property does not exist: {:?}", multiname.local_name()).into());
|
|
let result: Value<'gc> = found?.resolve(self, context)?;
|
|
|
|
self.push(result);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_get_slot(&mut self, index: u32) -> Result<(), Error> {
|
|
let object = self.pop().as_object()?;
|
|
let value = object.get_slot(index)?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_set_slot(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: u32,
|
|
) -> Result<(), Error> {
|
|
let object = self.pop().as_object()?;
|
|
let value = self.pop();
|
|
|
|
object.set_slot(index, value, context.gc_context)
|
|
}
|
|
|
|
fn op_get_global_slot(&mut self, index: u32) -> Result<(), Error> {
|
|
let value = self.globals.get_slot(index)?;
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_set_global_slot(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: u32,
|
|
) -> Result<(), Error> {
|
|
let value = self.pop();
|
|
|
|
self.globals.set_slot(index, value, context.gc_context)
|
|
}
|
|
|
|
fn op_construct(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let mut ctor = self.pop().as_object()?;
|
|
|
|
let proto = ctor
|
|
.get_property(
|
|
ctor,
|
|
&QName::new(Namespace::public_namespace(), "prototype"),
|
|
self,
|
|
context,
|
|
)?
|
|
.as_object()?;
|
|
|
|
let object = proto.construct(self, context, &args)?;
|
|
ctor.call(Some(object), &args, self, context, object.proto())?;
|
|
|
|
self.push(object);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_construct_prop(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMultiname>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let multiname = self.pool_multiname(index)?;
|
|
let mut source = self.pop().as_object()?;
|
|
|
|
let ctor_name: Result<QName, Error> =
|
|
source.resolve_multiname(&multiname)?.ok_or_else(|| {
|
|
format!("Could not resolve property {:?}", multiname.local_name()).into()
|
|
});
|
|
let mut ctor = source
|
|
.get_property(source, &ctor_name?, self, context)?
|
|
.as_object()?;
|
|
let proto = ctor
|
|
.get_property(
|
|
ctor,
|
|
&QName::new(Namespace::public_namespace(), "prototype"),
|
|
self,
|
|
context,
|
|
)?
|
|
.as_object()?;
|
|
|
|
let object = proto.construct(self, context, &args)?;
|
|
ctor.call(Some(object), &args, self, context, Some(proto))?;
|
|
|
|
self.push(object);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_construct_super(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
arg_count: u32,
|
|
) -> Result<(), Error> {
|
|
let args = self.pop_args(arg_count);
|
|
let receiver = self.pop().as_object()?;
|
|
let name = QName::new(Namespace::public_namespace(), "constructor");
|
|
let base_proto: Result<Object<'gc>, Error> = self
|
|
.current_stack_frame()
|
|
.unwrap()
|
|
.read()
|
|
.base_proto()
|
|
.and_then(|p| p.proto())
|
|
.ok_or_else(|| {
|
|
"Attempted to call super constructor without a superclass."
|
|
.to_string()
|
|
.into()
|
|
});
|
|
let mut base_proto = base_proto?;
|
|
|
|
let function = base_proto
|
|
.get_property(receiver, &name, self, context)?
|
|
.as_object()?;
|
|
|
|
function.call(Some(receiver), &args, self, context, Some(base_proto))?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_new_activation(&mut self, context: &mut UpdateContext<'_, 'gc, '_>) -> Result<(), Error> {
|
|
self.push(ScriptObject::bare_object(context.gc_context));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_new_object(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
num_args: u32,
|
|
) -> Result<(), Error> {
|
|
let mut object = ScriptObject::object(context.gc_context, self.system_prototypes.object);
|
|
|
|
for _ in 0..num_args {
|
|
let value = self.pop();
|
|
let name = self.pop();
|
|
|
|
object.set_property(
|
|
object,
|
|
&QName::new(Namespace::public_namespace(), name.as_string()?),
|
|
value,
|
|
self,
|
|
context,
|
|
)?;
|
|
}
|
|
|
|
self.push(object);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_new_function(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcMethod>,
|
|
) -> Result<(), Error> {
|
|
let method_entry = self.table_method(index)?;
|
|
let scope = self.current_stack_frame().unwrap().read().scope();
|
|
|
|
let mut new_fn = FunctionObject::from_abc_method(
|
|
context.gc_context,
|
|
method_entry,
|
|
scope,
|
|
self.system_prototypes.function,
|
|
None,
|
|
);
|
|
let es3_proto = ScriptObject::object(context.gc_context, self.prototypes().object);
|
|
|
|
new_fn.install_slot(
|
|
context.gc_context,
|
|
QName::new(Namespace::public_namespace(), "prototype"),
|
|
0,
|
|
es3_proto.into(),
|
|
);
|
|
|
|
self.push(new_fn);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_new_class(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
index: Index<AbcClass>,
|
|
) -> Result<(), Error> {
|
|
let base_class = self.pop().as_object()?;
|
|
let class_entry = self.table_class(index)?;
|
|
let scope = self.current_stack_frame().unwrap().read().scope();
|
|
|
|
let (new_class, class_init) =
|
|
FunctionObject::from_abc_class(self, context, class_entry, base_class, scope)?;
|
|
|
|
class_init.call(Some(new_class), &[], self, context, None)?;
|
|
|
|
self.push(new_class);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_coerce_a(&mut self) -> Result<(), Error> {
|
|
Ok(())
|
|
}
|
|
|
|
fn op_jump(&mut self, offset: i32, reader: &mut Reader<Cursor<&[u8]>>) -> Result<(), Error> {
|
|
reader.seek(offset as i64)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_if_true(&mut self, offset: i32, reader: &mut Reader<Cursor<&[u8]>>) -> Result<(), Error> {
|
|
let value = self.pop().as_bool()?;
|
|
|
|
if value {
|
|
reader.seek(offset as i64)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_if_false(
|
|
&mut self,
|
|
offset: i32,
|
|
reader: &mut Reader<Cursor<&[u8]>>,
|
|
) -> Result<(), Error> {
|
|
let value = self.pop().as_bool()?;
|
|
|
|
if !value {
|
|
reader.seek(offset as i64)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_if_strict_eq(
|
|
&mut self,
|
|
offset: i32,
|
|
reader: &mut Reader<Cursor<&[u8]>>,
|
|
) -> Result<(), Error> {
|
|
let value2 = self.pop();
|
|
let value1 = self.pop();
|
|
|
|
if value1 == value2 {
|
|
reader.seek(offset as i64)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_if_strict_ne(
|
|
&mut self,
|
|
offset: i32,
|
|
reader: &mut Reader<Cursor<&[u8]>>,
|
|
) -> Result<(), Error> {
|
|
let value2 = self.pop();
|
|
let value1 = self.pop();
|
|
|
|
if value1 != value2 {
|
|
reader.seek(offset as i64)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_strict_equals(&mut self) -> Result<(), Error> {
|
|
let value2 = self.pop();
|
|
let value1 = self.pop();
|
|
|
|
self.push(value1 == value2);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_has_next(&mut self) -> Result<(), Error> {
|
|
//TODO: After adding ints, change this to ints.
|
|
let cur_index = self.pop().as_number()?;
|
|
let object = self.pop().as_object()?;
|
|
|
|
let next_index = cur_index as u32 + 1;
|
|
|
|
if object.get_enumerant_name(next_index).is_some() {
|
|
self.push(next_index as f32);
|
|
} else {
|
|
self.push(0.0);
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_has_next_2(
|
|
&mut self,
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
object_register: u32,
|
|
index_register: u32,
|
|
) -> Result<(), Error> {
|
|
//TODO: After adding ints, change this to ints.
|
|
let cur_index = self.register_value(index_register)?.as_number()?;
|
|
let mut object = Some(self.register_value(object_register)?.as_object()?);
|
|
|
|
let mut next_index = cur_index as u32 + 1;
|
|
|
|
while let Some(cur_object) = object {
|
|
if cur_object.get_enumerant_name(next_index).is_none() {
|
|
next_index = 1;
|
|
object = cur_object.proto();
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if object.is_none() {
|
|
next_index = 0;
|
|
}
|
|
|
|
self.push(next_index != 0);
|
|
self.set_register_value(context, index_register, next_index)?;
|
|
self.set_register_value(
|
|
context,
|
|
object_register,
|
|
object.map(|v| v.into()).unwrap_or(Value::Null),
|
|
)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_next_name(&mut self) -> Result<(), Error> {
|
|
//TODO: After adding ints, change this to ints.
|
|
let cur_index = self.pop().as_number()?;
|
|
let object = self.pop().as_object()?;
|
|
|
|
let name = object
|
|
.get_enumerant_name(cur_index as u32)
|
|
.map(|n| n.local_name().into());
|
|
|
|
self.push(name.unwrap_or(Value::Undefined));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_next_value(&mut self, context: &mut UpdateContext<'_, 'gc, '_>) -> Result<(), Error> {
|
|
//TODO: After adding ints, change this to ints.
|
|
let cur_index = self.pop().as_number()?;
|
|
let mut object = self.pop().as_object()?;
|
|
|
|
let name = object.get_enumerant_name(cur_index as u32);
|
|
let value = if let Some(name) = name {
|
|
object.get_property(object, &name, self, context)?
|
|
} else {
|
|
Value::Undefined
|
|
};
|
|
|
|
self.push(value);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[allow(unused_variables)]
|
|
fn op_debug(
|
|
&mut self,
|
|
is_local_register: bool,
|
|
register_name: Index<String>,
|
|
register: u8,
|
|
) -> Result<(), Error> {
|
|
if is_local_register {
|
|
let register_name = self.pool_string(register_name)?;
|
|
let value = self.register_value(register as u32)?;
|
|
|
|
avm_debug!("Debug: {} = {:?}", register_name, value);
|
|
} else {
|
|
avm_debug!("Unknown debugging mode!");
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[allow(unused_variables)]
|
|
fn op_debug_file(&mut self, file_name: Index<String>) -> Result<(), Error> {
|
|
let file_name = self.pool_string(file_name)?;
|
|
|
|
avm_debug!("File: {}", file_name);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[allow(unused_variables)]
|
|
fn op_debug_line(&mut self, line_num: u32) -> Result<(), Error> {
|
|
avm_debug!("Line: {}", line_num);
|
|
|
|
Ok(())
|
|
}
|
|
}
|