Struct Lexer

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pub struct Lexer { /* private fields */ }
Expand description

基于 logos 库的高性能词法分析器

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impl Lexer

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pub fn new(file_name: impl Into<String>) -> Self

创建新的词法分析器实例

§参数
  • file_name: 源文件名,用于错误报告
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pub fn is_eof(&self) -> bool

检查是否已到达文件末尾

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pub fn get_file_name(&self) -> String

获取源文件名

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pub fn line(&self, line: usize) -> String

获取指定行的内容

§参数
  • line: 行号(从1开始)
§返回值

指定行的文本内容

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pub fn set_chars(&mut self, chars: Vec<char>)

设置要分析的字符序列

§参数
  • chars: 字符向量
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pub fn from_script( file_name: impl Into<String>, script: impl Into<String>, ) -> Self

从脚本字符串创建词法分析器

§参数
  • file_name: 文件名
  • script: 脚本内容
§返回值

新的词法分析器实例

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pub fn next_token(&mut self) -> Option<(Token, Position)>

获取下一个词法单元

§返回值

包含词法单元和位置信息的元组,如果到达文件末尾则返回 None

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pub fn get_source(&self) -> &str

获取源代码文本

Trait Implementations§

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impl Clone for Lexer

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fn clone(&self) -> Lexer

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Lexer

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl Freeze for Lexer

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impl RefUnwindSafe for Lexer

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impl Send for Lexer

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impl Sync for Lexer

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impl Unpin for Lexer

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impl UnwindSafe for Lexer

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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