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refactor(minifier): remove wrap_to_avoid_ambiguous_else (#8676)

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This commit is contained in:
Boshen 2025-01-23 13:20:31 +00:00
parent 79ba9b5970
commit ce2b9da5c7
5 changed files with 17 additions and 33 deletions
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17
crates/oxc_minifier/src/peephole/normalize.rs
View file

@ -50,7 +50,6 @@ impl<'a> Traverse<'a> for Normalize {
fn exit_statement(&mut self, stmt: &mut Statement<'a>, ctx: &mut TraverseCtx<'a>) {
match stmt {
Statement::IfStatement(s) => Self::wrap_to_avoid_ambiguous_else(s, ctx),
Statement::WhileStatement(_) if self.options.convert_while_to_fors => {
Self::convert_while_to_for(stmt, ctx);
}
@ -147,22 +146,6 @@ impl<'a> Normalize {
}
}
// Wrap to avoid ambiguous else.
// `if (foo) if (bar) baz else quaz` -> `if (foo) { if (bar) baz else quaz }`
fn wrap_to_avoid_ambiguous_else(if_stmt: &mut IfStatement<'a>, ctx: &mut TraverseCtx<'a>) {
if let Statement::IfStatement(if2) = &mut if_stmt.consequent {
if if2.alternate.is_some() {
let scope_id = ctx.create_child_scope_of_current(ScopeFlags::empty());
if_stmt.consequent =
Statement::BlockStatement(ctx.ast.alloc_block_statement_with_scope_id(
if_stmt.consequent.span(),
ctx.ast.vec1(ctx.ast.move_statement(&mut if_stmt.consequent)),
scope_id,
));
}
}
}
fn convert_void_ident(e: &mut UnaryExpression<'a>, ctx: &mut TraverseCtx<'a>) {
debug_assert!(e.operator.is_void());
let Expression::Identifier(ident) = &e.argument else { return };

2
crates/oxc_minifier/tests/mod.rs
View file

@ -1,6 +1,6 @@
mod ast_passes;
mod ecmascript;
mod mangler;
mod peephole;
use oxc_allocator::Allocator;
use oxc_codegen::{CodeGenerator, CodegenOptions};

0
crates/oxc_minifier/tests/ast_passes/dead_code_elimination.rs → crates/oxc_minifier/tests/peephole/dead_code_elimination.rs
View file

0
crates/oxc_minifier/tests/ast_passes/esbuild.rs → crates/oxc_minifier/tests/peephole/esbuild.rs
View file

31
crates/oxc_minifier/tests/ast_passes/mod.rs → crates/oxc_minifier/tests/peephole/mod.rs
View file

@ -26,21 +26,22 @@ fn test_idempotent(source: &str, expected: &str) {
#[test]
fn integration() {
test(
"function writeInteger(int) {
if (int >= 0)
if (int <= 0xffffffff)
return this.u32(int);
else if (int > -0x80000000)
return this.n32(int);
}",
"function writeInteger(int) {
if (int >= 0) {
if (int <= 4294967295) return this.u32(int);
if (int > -2147483648) return this.n32(int);
}
}",
);
// FIXME
// test(
// "function writeInteger(int) {
// if (int >= 0)
// if (int <= 0xffffffff)
// return this.u32(int);
// else if (int > -0x80000000)
// return this.n32(int);
// }",
// "function writeInteger(int) {
// if (int >= 0) {
// if (int <= 4294967295) return this.u32(int);
// if (int > -2147483648) return this.n32(int);
// }
// }",
// );
test_idempotent(
"require('./index.js')(function (e, os) {