Enum Document 

pub enum Document<'a> {
    Nil,
    Text(Cow<'a, str>),
    Concat(Vec<Document<'a>>),
    Group(Box<Document<'a>>),
    Indent(Box<Document<'a>>),
    Line,
    SoftLine,
    SoftLineSpace,
    HardLine,
}

Document 抽象，用于描述布局逻辑

Variants

Nil

空文档

Text(Cow<'a, str>)

纯文本

Concat(Vec<Document<'a>>)

连接多个文档

Group(Box<Document<'a>>)

组合文档，作为换行计算的最小单位

Indent(Box<Document<'a>>)

增加缩进

Line

强制换行

SoftLine

软换行：如果 Group 展开则为换行，否则为空

SoftLineSpace

软换行（带空格）：如果 Group 展开则为换行，否则为空格

HardLine

强制换行且会导致父级 Group 也展开

Implementations

impl<'a> Document<'a>

pub fn render(&self, config: FormatConfig) -> String

渲染 Document 为字符串

pub fn text<S: Into<Cow<'a, str>>>(text: S) -> Self

创建文本文档

pub fn concat(docs: Vec<Document<'a>>) -> Self

连接多个文档

pub fn group(doc: Document<'a>) -> Self

创建组合文档

pub fn indent(doc: Document<'a>) -> Self

创建缩进文档

pub fn join<I>(docs: I, separator: Document<'a>) -> Self

where I: IntoIterator<Item = Document<'a>>,

辅助方法：将多个文档用指定分隔符连接

Trait Implementations

impl<'a> AsDocument for Document<'a>

fn as_document(&self) -> Document<'_>

Converts this type to a document for pretty printing.

impl<'a> Clone for Document<'a>

fn clone(&self) -> Document<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Document<'a>

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

Formats the value using the given formatter.

impl<'a> From<&'a str> for Document<'a>

fn from(s: &'a str) -> Self

Converts to this type from the input type.

impl<'a> From<Cow<'a, str>> for Document<'a>

fn from(s: Cow<'a, str>) -> Self

Converts to this type from the input type.

impl From<String> for Document<'_>

fn from(s: String) -> Self

Converts to this type from the input type.

impl<'a> Serialize for Document<'a>

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'a> ToDocument<'a> for Document<'a>

fn to_document(self) -> Document<'a>

Converts this type to a document value.