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Print dates in a nicer format

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This commit is contained in:
Joscha 2021-12-06 13:54:58 +00:00
parent 531a140c45
commit 3e70b2e2c9
5 changed files with 67 additions and 5 deletions
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9
src/eval/error.rs
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@ -4,9 +4,10 @@ use chrono::NaiveDate;
use crate::files::primitives::{Span, Time};
#[derive(Debug)]
#[derive(Debug, thiserror::Error)]
pub enum Error {
/// A delta step resulted in an invalid date.
#[error("delta step resulted in invalid date")]
DeltaInvalidStep {
span: Span,
start: NaiveDate,
@ -15,6 +16,7 @@ pub enum Error {
prev_time: Option<Time>,
},
/// A time-based delta step was applied to a date without time.
#[error("time-based delta step applied to date without time")]
DeltaNoTime {
span: Span,
start: NaiveDate,
@ -23,6 +25,7 @@ pub enum Error {
/// A `DATE`'s repeat delta did not move the date forwards in time. Instead,
/// it either remained at the current date (`to == from`) or moved backwards
/// in time (`to < from`).
#[error("repeat delta did not move forwards")]
RepeatDidNotMoveForwards {
span: Span,
from: NaiveDate,
@ -30,12 +33,16 @@ pub enum Error {
},
/// A `MOVE a TO b` statement was executed, but there was no entry at the
/// date `a`.
#[error("tried to move nonexisting entry")]
MoveWithoutSource { span: Span },
/// A division by zero has occurred.
#[error("tried to divide by zero")]
DivByZero { span: Span, date: NaiveDate },
/// A modulo operation by zero has occurred.
#[error("tried to modulo by zero")]
ModByZero { span: Span, date: NaiveDate },
/// Easter calculation failed.
#[error("easter calculation failed")]
Easter {
span: Span,
date: NaiveDate,