feat: complete basic lexer and parser for regex. #2

	name: "CI"

	on:
	push:
	pull_request:
	workflow_dispatch:

	concurrency:
	group: "${{github.workflow}}-${{github.ref}}"
	# Cancel in-progress jobs for efficiency
	cancel-in-progress: true

	jobs:
	build:
	strategy:
	matrix:
	os: ["macos-latest", "ubuntu-latest"]
	runs-on: "${{matrix.os}}"
	steps:
	- uses: "actions/checkout@v4"

	- name: "Install Rust toolchain"
	run: rustup show

	- name: "Install Rust fmt toolchain"
	run: rustup component add rustfmt

	- name: "Install cargo nextest"
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-nextest

	- name: "Cargo fmt"
	run: cargo fmt --all --check

	- name: "Cargo check"
	run: cargo check

	- name: "Cargo test"
	run: cargo nextest run --all-features

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