mirror of
https://github.com/denoland/rusty_v8.git
synced 2024-12-12 02:27:50 -05:00
ddc8062644
The `get_current_context()` and `get_entered_or_microtask_context()` methods now return `Option<Local<Context>>` to reflect that an isolate may not have entered any context. They're also moved from `Isolate` to `struct Entered` because it turns out that the underlying V8 API calls actually create new local handles, hence they should only be used inside an active HandleScope. The `InContext` trait has been removed. A test exercising `ContextScope` and the `get_*_context()` methods mentioned above was added. Closes: #248.
108 lines
3.1 KiB
Rust
108 lines
3.1 KiB
Rust
use std::marker::PhantomData;
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use std::mem::MaybeUninit;
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use std::ptr::null;
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use crate::support::Opaque;
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use crate::Boolean;
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use crate::Context;
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use crate::Integer;
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use crate::Local;
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use crate::String;
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use crate::ToLocal;
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use crate::Value;
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/// The origin, within a file, of a script.
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#[repr(C)]
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pub struct ScriptOrigin<'sc>([usize; 7], PhantomData<&'sc ()>);
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extern "C" {
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fn v8__Script__Compile(
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context: *mut Context,
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source: *mut String,
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origin: *const ScriptOrigin,
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) -> *mut Script;
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fn v8__Script__Run(this: &mut Script, context: *mut Context) -> *mut Value;
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fn v8__ScriptOrigin__CONSTRUCT(
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buf: &mut MaybeUninit<ScriptOrigin>,
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resource_name: *mut Value,
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resource_line_offset: *mut Integer,
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resource_column_offset: *mut Integer,
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resource_is_shared_cross_origin: *mut Boolean,
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script_id: *mut Integer,
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source_map_url: *mut Value,
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resource_is_opaque: *mut Boolean,
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is_wasm: *mut Boolean,
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is_module: *mut Boolean,
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);
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}
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/// A compiled JavaScript script, tied to a Context which was active when the
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/// script was compiled.
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#[repr(C)]
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pub struct Script(Opaque);
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impl Script {
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/// A shorthand for ScriptCompiler::Compile().
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pub fn compile<'sc>(
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scope: &mut impl ToLocal<'sc>,
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mut context: Local<Context>,
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mut source: Local<String>,
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origin: Option<&ScriptOrigin>,
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) -> Option<Local<'sc, Script>> {
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// TODO: use the type system to enforce that a Context has been entered.
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// TODO: `context` and `source` probably shouldn't be mut.
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let ptr = unsafe {
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v8__Script__Compile(
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&mut *context,
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&mut *source,
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origin.map(|r| r as *const _).unwrap_or(null()),
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)
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};
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unsafe { scope.to_local(ptr) }
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}
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/// Runs the script returning the resulting value. It will be run in the
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/// context in which it was created (ScriptCompiler::CompileBound or
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/// UnboundScript::BindToCurrentContext()).
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pub fn run<'sc>(
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&mut self,
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scope: &mut impl ToLocal<'sc>,
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mut context: Local<Context>,
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) -> Option<Local<'sc, Value>> {
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unsafe { scope.to_local(v8__Script__Run(self, &mut *context)) }
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}
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}
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/// The origin, within a file, of a script.
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impl<'sc> ScriptOrigin<'sc> {
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#[allow(clippy::too_many_arguments)]
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pub fn new(
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mut resource_name: Local<'sc, Value>,
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mut resource_line_offset: Local<'sc, Integer>,
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mut resource_column_offset: Local<'sc, Integer>,
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mut resource_is_shared_cross_origin: Local<'sc, Boolean>,
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mut script_id: Local<'sc, Integer>,
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mut source_map_url: Local<'sc, Value>,
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mut resource_is_opaque: Local<'sc, Boolean>,
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mut is_wasm: Local<'sc, Boolean>,
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mut is_module: Local<'sc, Boolean>,
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) -> Self {
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unsafe {
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let mut buf = std::mem::MaybeUninit::<ScriptOrigin>::uninit();
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v8__ScriptOrigin__CONSTRUCT(
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&mut buf,
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&mut *resource_name,
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&mut *resource_line_offset,
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&mut *resource_column_offset,
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&mut *resource_is_shared_cross_origin,
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&mut *script_id,
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&mut *source_map_url,
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&mut *resource_is_opaque,
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&mut *is_wasm,
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&mut *is_module,
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);
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buf.assume_init()
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}
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}
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}
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