Enum Version 

pub enum Version {
    V1,
    V2,
    V3,
}

SML 语法版本

SML 源于 eclog，演进中通过 @version 声明文档遵循的语法版本， 使解析器能在将来引入 v2 不兼容语法时仍正确读取旧文档。

Variants

V1

v1：初始公开版本。字符串可裸写（name: John），自动识别类型。

V2

v2：草案版，引入「字符串必须显式引号」的不兼容语法（与 v3 同语义）。

V3

v3：正式版。取消自动字符串无引号，自由文本必须写作 "..."； 数字 / bool / null / 片段引用 &x / 环境变量 $env.X 仍为裸词。

Implementations

impl Version

pub const CURRENT: Version = Version::V3

当前实现支持的最新版本

pub fn strict_strings(self) -> bool

是否要求字符串显式引号（v2 / v3 为严格模式）

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

版本名（用于错误信息与序列化回显）

Trait Implementations

impl Clone for Version

fn clone(&self) -> Version

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Version

impl Debug for Version

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

Formats the value using the given formatter.

impl Display for Version

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

Formats the value using the given formatter.

impl Eq for Version

impl Ord for Version

fn cmp(&self, other: &Version) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Version

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Version

fn partial_cmp(&self, other: &Version) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Version