2020-02-04 02:22:44 +00:00
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//! ActionScript Virtual Machine 2 (AS3) support
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2020-02-06 04:15:03 +00:00
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use crate::avm2::activation::Activation;
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2020-02-11 19:33:30 +00:00
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use crate::avm2::names::{Multiname, Namespace, QName};
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2020-02-11 04:58:15 +00:00
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use crate::avm2::object::{Object, TObject};
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use crate::avm2::return_value::ReturnValue;
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2020-02-11 19:46:47 +00:00
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use crate::avm2::scope::Scope;
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2020-02-04 02:22:44 +00:00
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use crate::avm2::value::Value;
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2020-02-04 18:51:18 +00:00
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use crate::context::UpdateContext;
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use crate::tag_utils::SwfSlice;
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2020-02-12 19:58:33 +00:00
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use gc_arena::{Collect, GcCell, MutationContext};
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2020-02-06 04:15:03 +00:00
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use std::io::Cursor;
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2020-02-07 00:28:54 +00:00
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use std::rc::Rc;
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2020-02-04 18:51:18 +00:00
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use swf::avm2::read::Reader;
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2020-02-11 04:58:15 +00:00
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use swf::avm2::types::{
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AbcFile, Index, MethodBody, Multiname as AbcMultiname, Namespace as AbcNamespace, Op,
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};
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2020-02-06 04:15:03 +00:00
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use swf::read::SwfRead;
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2020-02-04 02:22:44 +00:00
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2020-02-06 04:15:03 +00:00
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mod activation;
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mod function;
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2020-02-12 19:58:33 +00:00
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mod globals;
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2020-02-05 18:52:11 +00:00
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mod names;
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mod object;
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2020-02-06 04:15:03 +00:00
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mod return_value;
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2020-02-10 19:54:55 +00:00
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mod scope;
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2020-02-05 18:52:11 +00:00
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mod script_object;
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2020-02-04 02:22:44 +00:00
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mod value;
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2020-02-06 04:15:03 +00:00
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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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2020-02-04 18:51:18 +00:00
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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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2020-02-04 02:22:44 +00:00
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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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2020-02-06 04:15:03 +00:00
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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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2020-02-04 02:22:44 +00:00
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/// Values currently present on the operand stack.
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stack: Vec<Value<'gc>>,
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2020-02-12 19:58:33 +00:00
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/// Global scope object.
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globals: Object<'gc>,
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2020-02-04 02:22:44 +00:00
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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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2020-02-12 19:58:33 +00:00
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pub fn new(mc: MutationContext<'gc, '_>) -> Self {
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2020-02-06 04:15:03 +00:00
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Self {
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stack_frames: Vec::new(),
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stack: Vec::new(),
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2020-02-12 19:58:33 +00:00
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globals: globals::construct_global_scope(mc),
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2020-02-06 04:15:03 +00:00
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}
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2020-02-04 02:22:44 +00:00
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}
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2020-02-04 18:51:18 +00:00
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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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///
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/// The `preload` flag indicates if the file is being encountered as part
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/// of a preloading operation. If false, then this file has actually been
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/// encountered as part of normal movie playback and it's final script
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/// should be executed.
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pub fn load_abc(
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&mut self,
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abc: SwfSlice,
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context: &mut UpdateContext<'_, 'gc, '_>,
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preload: bool,
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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 = read.read()?;
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Ok(())
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}
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2020-02-06 04:15:03 +00:00
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2020-02-12 19:58:33 +00:00
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pub fn globals(&self) -> Object<'gc> {
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self.globals
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}
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2020-02-08 03:42:04 +00:00
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/// Get the current stack frame (`Activation` object).
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2020-02-06 04:15:03 +00:00
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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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2020-02-08 03:42:04 +00:00
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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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2020-02-08 21:59:59 +00:00
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/// Destroy the current stack frame (if there is one).
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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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2020-02-06 04:15:03 +00:00
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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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2020-02-12 23:52:00 +00:00
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let (abc, frame_cell, method_body_index, pc) = {
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2020-02-06 19:12:01 +00:00
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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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2020-02-06 04:15:03 +00:00
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let mut frame_ref = frame.write(context.gc_context);
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frame_ref.lock()?;
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2020-02-12 23:52:00 +00:00
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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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2020-02-06 04:15:03 +00:00
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};
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let method_body: Result<&MethodBody, Error> =
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2020-02-06 19:12:01 +00:00
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abc.method_bodies.get(method_body_index).ok_or_else(|| {
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2020-02-06 04:15:03 +00:00
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"Attempting to execute a method that does not exist"
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.to_string()
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2020-02-06 19:12:01 +00:00
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.into()
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});
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2020-02-06 04:15:03 +00:00
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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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2020-02-06 19:12:01 +00:00
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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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2020-02-08 21:59:59 +00:00
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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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2020-02-07 00:28:54 +00:00
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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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2020-02-07 19:54:14 +00:00
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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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2020-02-07 00:28:54 +00:00
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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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2020-02-12 23:52:00 +00:00
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.map(|sf| sf.read().method().abc.clone())
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2020-02-07 00:28:54 +00:00
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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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2020-02-09 21:45:51 +00:00
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value::abc_int(&self.current_abc().unwrap(), index)
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2020-02-07 00:28:54 +00:00
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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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2020-02-09 21:45:51 +00:00
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value::abc_uint(&self.current_abc().unwrap(), index)
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2020-02-07 00:28:54 +00:00
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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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2020-02-09 21:45:51 +00:00
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value::abc_double(&self.current_abc().unwrap(), index)
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2020-02-07 00:28:54 +00:00
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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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2020-02-09 21:45:51 +00:00
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value::abc_string(&self.current_abc().unwrap(), index)
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2020-02-07 00:28:54 +00:00
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}
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2020-02-10 02:25:42 +00:00
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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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2020-02-11 04:58:15 +00:00
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/// Retrieve a namespace 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)
|
|
|
|
}
|
|
|
|
|
2020-02-06 04:15:03 +00:00
|
|
|
/// Run a single action from a given action reader.
|
|
|
|
pub fn do_next_opcode(
|
|
|
|
&mut self,
|
|
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
|
|
reader: &mut Reader<Cursor<&[u8]>>,
|
|
|
|
) -> Result<(), Error> {
|
|
|
|
if let Some(op) = reader.read_op()? {
|
|
|
|
avm_debug!("Opcode: {:?}", op);
|
|
|
|
|
|
|
|
let result = match op {
|
2020-02-07 00:28:54 +00:00
|
|
|
Op::PushByte { value } => self.op_push_byte(value),
|
|
|
|
Op::PushDouble { value } => self.op_push_double(value),
|
|
|
|
Op::PushFalse => self.op_push_false(),
|
|
|
|
Op::PushInt { value } => self.op_push_int(value),
|
2020-02-10 02:25:42 +00:00
|
|
|
Op::PushNamespace { value } => self.op_push_namespace(value),
|
2020-02-07 00:28:54 +00:00
|
|
|
Op::PushNaN => self.op_push_nan(),
|
|
|
|
Op::PushNull => self.op_push_null(),
|
|
|
|
Op::PushShort { value } => self.op_push_short(value),
|
|
|
|
Op::PushString { value } => self.op_push_string(value),
|
|
|
|
Op::PushTrue => self.op_push_true(),
|
|
|
|
Op::PushUint { value } => self.op_push_uint(value),
|
|
|
|
Op::PushUndefined => self.op_push_undefined(),
|
2020-02-07 19:54:14 +00:00
|
|
|
Op::GetLocal { index } => self.op_get_local(index),
|
|
|
|
Op::SetLocal { index } => self.op_set_local(context, index),
|
2020-02-08 21:59:59 +00:00
|
|
|
Op::Call { num_args } => self.op_call(context, num_args),
|
|
|
|
Op::ReturnValue => self.op_return_value(context),
|
|
|
|
Op::ReturnVoid => self.op_return_void(context),
|
2020-02-11 19:33:30 +00:00
|
|
|
Op::GetProperty { index } => self.op_get_property(context, index),
|
|
|
|
Op::SetProperty { index } => self.op_set_property(context, index),
|
2020-02-11 19:46:47 +00:00
|
|
|
Op::PushScope => self.op_push_scope(context),
|
|
|
|
Op::PushWith => self.op_push_with(context),
|
|
|
|
Op::PopScope => self.op_pop_scope(context),
|
2020-02-11 04:58:15 +00:00
|
|
|
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),
|
2020-02-07 00:28:54 +00:00
|
|
|
_ => self.unknown_op(op),
|
2020-02-06 04:15:03 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
if let Err(ref e) = result {
|
|
|
|
log::error!("AVM2 error: {}", e);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
2020-02-07 00:28:54 +00:00
|
|
|
fn unknown_op(&mut self, op: swf::avm2::types::Op) -> Result<(), Error> {
|
2020-02-06 04:15:03 +00:00
|
|
|
log::error!("Unknown AVM2 opcode: {:?}", op);
|
|
|
|
Err("Unknown op".into())
|
|
|
|
}
|
2020-02-07 00:28:54 +00:00
|
|
|
|
|
|
|
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(())
|
|
|
|
}
|
2020-02-10 02:25:42 +00:00
|
|
|
|
|
|
|
fn op_push_namespace(&mut self, value: Index<AbcNamespace>) -> Result<(), Error> {
|
|
|
|
self.push(self.pool_namespace(value)?);
|
|
|
|
Ok(())
|
|
|
|
}
|
2020-02-07 00:28:54 +00:00
|
|
|
|
|
|
|
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(())
|
|
|
|
}
|
2020-02-07 19:54:14 +00:00
|
|
|
|
|
|
|
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)
|
|
|
|
}
|
2020-02-08 21:59:59 +00:00
|
|
|
|
|
|
|
fn op_call(
|
|
|
|
&mut self,
|
|
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
|
|
arg_count: u32,
|
|
|
|
) -> Result<(), Error> {
|
|
|
|
let function = self.pop().as_object()?;
|
|
|
|
let receiver = self.pop().as_object()?;
|
|
|
|
let mut args = Vec::new();
|
|
|
|
for _ in 0..arg_count {
|
|
|
|
args.push(self.pop());
|
|
|
|
}
|
|
|
|
|
|
|
|
function.call(receiver, &args, self, context)?.push(self);
|
|
|
|
|
|
|
|
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)
|
|
|
|
}
|
2020-02-11 04:58:15 +00:00
|
|
|
|
2020-02-11 19:33:30 +00:00
|
|
|
fn op_get_property(
|
|
|
|
&mut self,
|
|
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
|
|
index: Index<AbcMultiname>,
|
|
|
|
) -> Result<(), Error> {
|
|
|
|
let multiname = self.pool_multiname(index)?;
|
|
|
|
let 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(&name?, self, context)?
|
|
|
|
.resolve(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 object = self.pop().as_object()?;
|
|
|
|
|
|
|
|
if let Some(name) = object.resolve_multiname(&multiname) {
|
|
|
|
object.set_property(&name, value, self, context)
|
|
|
|
} else {
|
|
|
|
//TODO: Non-dynamic objects should fail
|
|
|
|
//TODO: This should only work if the public namespace is present
|
|
|
|
let name = QName::dynamic_name(multiname.local_name());
|
|
|
|
object.set_property(&name, value, self, context)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-02-11 19:46:47 +00:00
|
|
|
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(())
|
|
|
|
}
|
|
|
|
|
2020-02-11 04:58:15 +00:00
|
|
|
fn op_find_property(
|
|
|
|
&mut self,
|
|
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
|
|
|
index: Index<AbcMultiname>,
|
|
|
|
) -> Result<(), Error> {
|
|
|
|
let multiname = self.pool_multiname(index)?;
|
|
|
|
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)?;
|
|
|
|
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> {
|
|
|
|
//TODO: getlex does not allow runtime multinames according to spec.
|
|
|
|
let multiname = self.pool_multiname(index)?;
|
|
|
|
let found: Result<ReturnValue<'gc>, Error> =
|
|
|
|
if let Some(scope) = self.current_stack_frame().unwrap().read().scope() {
|
|
|
|
Ok(scope.read().resolve(&multiname, self, context)?)
|
|
|
|
} else {
|
|
|
|
Err("No objects exist on scope".into())
|
|
|
|
};
|
|
|
|
let result: Value<'gc> = found?.resolve(self, context)?;
|
|
|
|
|
|
|
|
self.push(result);
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
2020-02-04 02:22:44 +00:00
|
|
|
}
|