Struct winnow_sm::Env

pub struct Env(HashMap<String, String>);

User-defined variables

Methods

impl Env

pub fn get_variable(&self, variable_name: &str) -> String

Retrieve the value stored at variable_name.

pub fn set_variable(&mut self, variable_name: &str, value: String)

Set variable_name to value, always overwrites

pub fn resolve_template(&self, template: &str) -> String

Resolve a string template

Example

env.set_variable("NAME", "Al Gore".into());
env.set_variable("COLOR", "Green".into());
let template = "Hi there, $NAME, seen anything $COLOR lately?";
let expected = "Hi there, Al Gore, seen anything Green lately?";

If variable is not set, variable name will be used:

let template = "Hi there, $NAME, how is $TOPIC?";
let expected = "Hi there, Al Gore, how is TOPIC?";

Trait Implementations

impl Default for Env

fn default() -> Self

Returns the "default value" for a type.

impl PartialEq<Env> for Env

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Debug for Env

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

Formats the value using the given formatter.