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ctx.rs
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ctx.rs
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#![allow(dead_code)]
use std::ops::{Deref, DerefMut};
use swc_ecma_ast::VarDeclKind;
use super::{storage::Storage, UsageAnalyzer};
impl<S> UsageAnalyzer<S>
where
S: Storage,
{
pub(super) fn with_ctx(&mut self, ctx: Ctx) -> WithCtx<S> {
let orig_ctx = self.ctx;
self.ctx = ctx;
WithCtx {
analyzer: self,
orig_ctx,
}
}
}
#[derive(Debug, Default, Clone, Copy)]
#[non_exhaustive]
pub struct Ctx {
/// See [crate::marks::Marks]
pub skip_standalone: bool,
pub var_decl_kind_of_pat: Option<VarDeclKind>,
pub in_decl_with_no_side_effect_for_member_access: bool,
pub in_pat_of_var_decl: bool,
pub in_pat_of_var_decl_with_init: bool,
pub in_pat_of_param: bool,
pub in_catch_param: bool,
/// `true` for `foo.bar` and `false` for `foo` in `foo.bar++`
pub is_exact_reassignment: bool,
pub is_callee: bool,
/// `true` for arguments of [swc_ecma_ast::Expr::Call] or
/// [swc_ecma_ast::Expr::New]
pub in_call_arg: bool,
/// `false` for `array` in `array.length.
pub is_exact_arg: bool,
pub in_await_arg: bool,
pub is_delete_arg: bool,
pub in_left_of_for_loop: bool,
pub executed_multiple_time: bool,
/// Are we handling argument of an update expression.
pub in_update_arg: bool,
pub in_assign_lhs: bool,
pub in_cond: bool,
pub inline_prevented: bool,
pub is_op_assign: bool,
pub is_top_level: bool,
}
pub(super) struct WithCtx<'a, S>
where
S: Storage,
{
analyzer: &'a mut UsageAnalyzer<S>,
orig_ctx: Ctx,
}
impl<S> Deref for WithCtx<'_, S>
where
S: Storage,
{
type Target = UsageAnalyzer<S>;
fn deref(&self) -> &Self::Target {
self.analyzer
}
}
impl<S> DerefMut for WithCtx<'_, S>
where
S: Storage,
{
fn deref_mut(&mut self) -> &mut Self::Target {
self.analyzer
}
}
impl<S> Drop for WithCtx<'_, S>
where
S: Storage,
{
fn drop(&mut self) {
self.analyzer.ctx = self.orig_ctx;
}
}