Enum Feature 

pub enum Feature {
    BarewordStr,
    Include,
    Env,
    Contract,
    Fragment,
    TopArray,
    Namespace,
    ImplicitNs,
    MultiInclude,
    GlobInclude,
    RegexInclude,
    ExtRewrite,
}

单个特性标识。与 FEATURES 表一一对应；改表即改全端。

Variants

BarewordStr

裸词即字符串（v1 行为）。v2/v3 关闭后字符串必须加引号。

Include

include "x.sml" 文件包含。

Env

$env.VAR 环境变量内插。

Contract

@contract / @is 契约系统。

Fragment

&frag / @frag 片段复用。

TopArray

顶层裸数组 [ ... ]（无键）。

Namespace

include "x.sml" as ns 命名空间包含（高优先级前缀）。

ImplicitNs

无扩展名的 include "foo" 默认等价于 include "foo.sml" as foo。

MultiInclude

逗号分隔的多目标 include "a", "b" as y 与 import 别名。

GlobInclude

通配 include "dir/*.sml"（glob）。

RegexInclude

正则匹配 include /re/（需 regex-include）。

ExtRewrite

扩展名重写 include "x.conf" -> "x.sml"（将非 sml 当 sml 解析）。

Implementations

impl Feature

pub fn from_name(name: &str) -> Option<Feature>

按名字查特性；未知名字返回 None（调用方据此报错，杜绝静默 typo）。

pub fn name(self) -> &'static str

特性名（用于报错 / 序列化回显）

Trait Implementations

impl Clone for Feature

fn clone(&self) -> Feature

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Feature

impl Debug for Feature

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Feature

impl Hash for Feature

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Feature

fn eq(&self, other: &Feature) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Feature