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Add global constants `undefined`, `null`, and `NaN`.

This commit is contained in:
David Wendt 2020-03-08 23:09:30 -04:00
parent 03a240ebcd
commit ecfd16cec9
1 changed files with 15 additions and 0 deletions
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15
core/src/avm2/globals.rs
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@ -9,6 +9,7 @@ use crate::avm2::value::Value;
use crate::avm2::{Avm2, Error};
use crate::context::UpdateContext;
use gc_arena::{Collect, MutationContext};
use std::f64::NAN;
mod class;
mod flash;
@ -76,6 +77,17 @@ fn class<'gc>(
.unwrap();
}
/// Add a builtin constant to the global scope.
fn constant<'gc>(
mc: MutationContext<'gc, '_>,
mut global_scope: Object<'gc>,
package: &str,
name: &str,
value: Value<'gc>,
) {
global_scope.install_const(mc, QName::new(Namespace::package(package), name), 0, value)
}
/// Construct a new global scope.
///
/// This function returns both the global scope object, as well as all builtin
@ -120,6 +132,9 @@ pub fn construct_global_scope<'gc>(
fn_proto,
);
function(mc, gs, "", "trace", trace, fn_proto);
constant(mc, gs, "", "undefined", Value::Undefined);
constant(mc, gs, "", "null", Value::Null);
constant(mc, gs, "", "NaN", NAN.into());
// package `flash.events`
let eventdispatcher_proto =