Struct Config 

#[non_exhaustive]
pub struct Config<'a> {
    pub input: Box<dyn InputObject + 'a>,
    pub start_line_number: NonZeroU64,
    pub source: Option<Rc<Source>>,
}

Configuration for the parser

This struct holds various configuration options for the parser, including the input function to read source code and source information.

Parser implementations are not provided in this crate (yash-env). The standard parser implementation is provided in the yash-syntax crate. Config is provided here so that other crates can use RunReadEvalLoop without depending on yash-syntax.

Since this struct is marked as #[non_exhaustive], you cannot construct it directly. Instead, use the with_input function to create a Config instance, and then modify its fields as necessary.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

input: Box<dyn InputObject + 'a>

Input function to read source code

start_line_number: NonZeroU64

Line number for the first line of the input

The lexer counts lines starting from this number. This affects the start_line_number field of the Code instance attached to the parsed AST.

The default value is 1.

source: Option<Rc<Source>>

Source information for the input

If provided, this source information is saved in the source field of the Code instance attached to the parsed AST.

The default value is None, in which case Source::Unknown is used.

Implementations

impl<'a> Config<'a>

pub fn with_input(input: Box<dyn InputObject + 'a>) -> Self

Creates a Config with the given input function.

Trait Implementations

impl<'a> Debug for Config<'a>

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

Formats the value using the given formatter.