Trait TimeParser

pub trait TimeParser {
    type DateTime;

    // Required methods
    fn now(&self) -> Self::DateTime;
    fn parse_expression(&self, expr: TimeExpression) -> Result<Self::DateTime>;
}

Trait for implementing time parsing with a specific datetime backend.

This trait should be implemented by datetime libraries (chrono, jiff, etc.) to provide the actual time calculation logic.

Examples

use temps_core::{TimeParser, TimeExpression, Result};

struct MyTimeParser;

impl TimeParser for MyTimeParser {
    type DateTime = String; // Your datetime type

    fn now(&self) -> Self::DateTime {
        "2024-01-15T14:30:00Z".to_string()
    }

    fn parse_expression(&self, expr: TimeExpression) -> Result<Self::DateTime> {
        // Implementation here
        Ok(self.now())
    }
}

Required Associated Types

type DateTime

The datetime type used by this implementation

Required Methods

fn now(&self) -> Self::DateTime

Get the current date and time

fn parse_expression(&self, expr: TimeExpression) -> Result<Self::DateTime>

Parse a time expression into a concrete datetime

Errors

Returns TempsError if:

• Date calculation results in an invalid date
• Arithmetic overflow occurs
• The backend library returns an error

Implementors