Struct CapabilityRequirement 

pub struct CapabilityRequirement {
    pub node: NodeId,
    pub kind: String,
    pub function: String,
    pub branch: String,
    pub capability: String,
    pub provider: String,
    pub parent: Option<NodeId>,
    pub source: String,
    pub line: usize,
}

One requires = ... entry collected from a registration face. 从注册面收集到的一条 requires = ... 需求。

Fields

node: NodeId

Identity of the face that declares the requirement. 声明该需求的注册面身份。

kind: String

Registration kind of the requiring face. 需求方注册面的注册类型。

function: String

Logical function or handle the requirement was written in. 书写该需求所在的逻辑函数或 handle。

branch: String

Graft branch the requirement was collected under. 收集该需求时所在的 graft 分支。

capability: String

Capability name the face needs from an ancestor. 该注册面需要祖先提供的能力名称。

provider: String

Expected registration kind of the ancestor that must provide it. 必须提供该能力的祖先的期望注册类型。

parent: Option<NodeId>

Where the ancestor search starts; None means no ancestor can satisfy it, so the requirement is always reported. 祖先搜索的起点；None 表示没有祖先能满足它，因此该需求总会被报告。

source: String

Source file the requirement was written in. 书写该需求的源文件。

line: usize

1-based line inside source. source 内以 1 起始的行号。

Trait Implementations

impl Clone for CapabilityRequirement

fn clone(&self) -> CapabilityRequirement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CapabilityRequirement

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

Formats the value using the given formatter.