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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/jsparagus-stencil/src/gcthings.rs | |
parent | Initial commit. (diff) | |
download | firefox-upstream.tar.xz firefox-upstream.zip |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/rust/jsparagus-stencil/src/gcthings.rs | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/third_party/rust/jsparagus-stencil/src/gcthings.rs b/third_party/rust/jsparagus-stencil/src/gcthings.rs new file mode 100644 index 0000000000..bbe18fd20f --- /dev/null +++ b/third_party/rust/jsparagus-stencil/src/gcthings.rs @@ -0,0 +1,77 @@ +use crate::regexp::RegExpIndex; +use crate::scope::ScopeIndex; +use crate::script::ScriptStencilIndex; +use ast::source_atom_set::SourceAtomSetIndex; + +/// Corresponds to js::frontend::GCThingList::ListType +/// in m-c/js/src/frontend/BytecodeSection.h. +#[derive(Debug)] +pub enum GCThing { + Null, + Atom(SourceAtomSetIndex), + Function(ScriptStencilIndex), + RegExp(RegExpIndex), + Scope(ScopeIndex), +} + +/// Index into GCThingList.things. +#[derive(Debug, Clone, Copy, PartialEq)] +pub struct GCThingIndex { + index: usize, +} + +impl GCThingIndex { + fn new(index: usize) -> Self { + Self { index } + } +} + +impl From<GCThingIndex> for usize { + fn from(index: GCThingIndex) -> usize { + index.index + } +} + +/// List of GC things. +/// +/// Maps to JSScript::gcthings() in js/src/vm/JSScript.h. +#[derive(Debug)] +pub struct GCThingList { + things: Vec<GCThing>, +} + +impl GCThingList { + pub fn new() -> Self { + Self { things: Vec::new() } + } + + pub fn push_atom(&mut self, atom_index: SourceAtomSetIndex) -> GCThingIndex { + let index = self.things.len(); + self.things.push(GCThing::Atom(atom_index)); + GCThingIndex::new(index) + } + + pub fn push_function(&mut self, fun_index: ScriptStencilIndex) -> GCThingIndex { + let index = self.things.len(); + self.things.push(GCThing::Function(fun_index)); + GCThingIndex::new(index) + } + + pub fn push_regexp(&mut self, regexp_index: RegExpIndex) -> GCThingIndex { + let index = self.things.len(); + self.things.push(GCThing::RegExp(regexp_index)); + GCThingIndex::new(index) + } + + pub fn push_scope(&mut self, scope_index: ScopeIndex) -> GCThingIndex { + let index = self.things.len(); + self.things.push(GCThing::Scope(scope_index)); + GCThingIndex::new(index) + } +} + +impl From<GCThingList> for Vec<GCThing> { + fn from(list: GCThingList) -> Vec<GCThing> { + list.things + } +} |