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Prepare eval error handling for cli arg errors

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This commit is contained in:
Joscha 2021-12-18 23:31:27 +01:00
parent 279bf4a4d1
commit ff627b98df
8 changed files with 107 additions and 93 deletions
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2
src/eval/command.rs
View file

@ -216,7 +216,7 @@ impl<'a> CommandState<'a> {
Ok(())
} else {
Err(Error::MoveWithoutSource {
file: self.command.source.file(),
index: self.command.source.file(),
span,
})
}

26
src/eval/command/date.rs
View file

@ -103,13 +103,13 @@ impl DateSpec {
Some((start, skip, range))
}
fn step(file: usize, from: NaiveDate, repeat: &Spanned<Delta>) -> Result<NaiveDate> {
let to = repeat.value.apply_date(file, from)?;
fn step(index: usize, from: NaiveDate, repeat: &Spanned<Delta>) -> Result<NaiveDate> {
let to = repeat.value.apply_date(index, from)?;
if to > from {
Ok(to)
} else {
Err(Error::RepeatDidNotMoveForwards {
file,
index,
span: repeat.span,
from,
to,
@ -117,13 +117,13 @@ impl DateSpec {
}
}
fn dates(&self, file: usize, start: NaiveDate) -> Result<Dates> {
let root = self.start_delta.apply_date(file, start)?;
fn dates(&self, index: usize, start: NaiveDate) -> Result<Dates> {
let root = self.start_delta.apply_date(index, start)?;
Ok(if let Some(root_time) = self.start_time {
let (other, other_time) = self.end_delta.apply_date_time(file, root, root_time)?;
let (other, other_time) = self.end_delta.apply_date_time(index, root, root_time)?;
Dates::new_with_time(root, root_time, other, other_time)
} else {
let other = self.end_delta.apply_date(file, root)?;
let other = self.end_delta.apply_date(index, root)?;
Dates::new(root, other)
})
}
@ -131,23 +131,23 @@ impl DateSpec {
impl<'a> CommandState<'a> {
pub fn eval_date_spec(&mut self, spec: DateSpec) -> Result<()> {
let file = self.command.source.file();
let index = self.command.source.file();
if let Some(repeat) = &spec.repeat {
if let Some((mut start, skip, range)) = spec.start_and_range(self) {
if skip {
start = DateSpec::step(file, start, repeat)?;
start = DateSpec::step(index, start, repeat)?;
}
while start < range.from() {
start = DateSpec::step(file, start, repeat)?;
start = DateSpec::step(index, start, repeat)?;
}
while start <= range.until() {
let dates = spec.dates(file, start)?;
let dates = spec.dates(index, start)?;
self.add(self.kind(), Some(dates));
start = DateSpec::step(file, start, repeat)?;
start = DateSpec::step(index, start, repeat)?;
}
}
} else {
let dates = spec.dates(file, spec.start)?;
let dates = spec.dates(index, spec.start)?;
self.add(self.kind(), Some(dates));
}
Ok(())

66
src/eval/command/formula.rs
View file

@ -46,7 +46,7 @@ pub enum Var {
}
impl Var {
fn eval(self, file: usize, date: NaiveDate) -> Result<i64> {
fn eval(self, index: usize, date: NaiveDate) -> Result<i64> {
Ok(match self {
Var::JulianDay => date.num_days_from_ce().into(),
Var::Year => date.year().into(),
@ -81,7 +81,7 @@ impl Var {
}
Var::Easter(span) => {
let e = computus::gregorian(date.year()).map_err(|e| Error::Easter {
file,
index,
span,
date,
msg: e,
@ -199,46 +199,46 @@ impl From<Weekday> for Expr {
}
impl Expr {
fn eval(&self, file: usize, date: NaiveDate) -> Result<i64> {
fn eval(&self, index: usize, date: NaiveDate) -> Result<i64> {
Ok(match self {
Expr::Lit(l) => *l,
Expr::Var(v) => v.eval(file, date)?,
Expr::Neg(e) => -e.eval(file, date)?,
Expr::Add(a, b) => a.eval(file, date)? + b.eval(file, date)?,
Expr::Sub(a, b) => a.eval(file, date)? - b.eval(file, date)?,
Expr::Mul(a, b) => a.eval(file, date)? * b.eval(file, date)?,
Expr::Var(v) => v.eval(index, date)?,
Expr::Neg(e) => -e.eval(index, date)?,
Expr::Add(a, b) => a.eval(index, date)? + b.eval(index, date)?,
Expr::Sub(a, b) => a.eval(index, date)? - b.eval(index, date)?,
Expr::Mul(a, b) => a.eval(index, date)? * b.eval(index, date)?,
Expr::Div(a, b, span) => {
let b = b.eval(file, date)?;
let b = b.eval(index, date)?;
if b == 0 {
return Err(Error::DivByZero {
file,
index,
span: *span,
date,
});
}
a.eval(file, date)?.div_euclid(b)
a.eval(index, date)?.div_euclid(b)
}
Expr::Mod(a, b, span) => {
let b = b.eval(file, date)?;
let b = b.eval(index, date)?;
if b == 0 {
return Err(Error::ModByZero {
file,
index,
span: *span,
date,
});
}
a.eval(file, date)?.rem_euclid(b)
a.eval(index, date)?.rem_euclid(b)
}
Expr::Eq(a, b) => b2i(a.eval(file, date)? == b.eval(file, date)?),
Expr::Neq(a, b) => b2i(a.eval(file, date)? != b.eval(file, date)?),
Expr::Lt(a, b) => b2i(a.eval(file, date)? < b.eval(file, date)?),
Expr::Lte(a, b) => b2i(a.eval(file, date)? <= b.eval(file, date)?),
Expr::Gt(a, b) => b2i(a.eval(file, date)? > b.eval(file, date)?),
Expr::Gte(a, b) => b2i(a.eval(file, date)? >= b.eval(file, date)?),
Expr::Not(e) => b2i(!i2b(e.eval(file, date)?)),
Expr::And(a, b) => b2i(i2b(a.eval(file, date)?) && i2b(b.eval(file, date)?)),
Expr::Or(a, b) => b2i(i2b(a.eval(file, date)?) || i2b(b.eval(file, date)?)),
Expr::Xor(a, b) => b2i(i2b(a.eval(file, date)?) ^ i2b(b.eval(file, date)?)),
Expr::Eq(a, b) => b2i(a.eval(index, date)? == b.eval(index, date)?),
Expr::Neq(a, b) => b2i(a.eval(index, date)? != b.eval(index, date)?),
Expr::Lt(a, b) => b2i(a.eval(index, date)? < b.eval(index, date)?),
Expr::Lte(a, b) => b2i(a.eval(index, date)? <= b.eval(index, date)?),
Expr::Gt(a, b) => b2i(a.eval(index, date)? > b.eval(index, date)?),
Expr::Gte(a, b) => b2i(a.eval(index, date)? >= b.eval(index, date)?),
Expr::Not(e) => b2i(!i2b(e.eval(index, date)?)),
Expr::And(a, b) => b2i(i2b(a.eval(index, date)?) && i2b(b.eval(index, date)?)),
Expr::Or(a, b) => b2i(i2b(a.eval(index, date)?) || i2b(b.eval(index, date)?)),
Expr::Xor(a, b) => b2i(i2b(a.eval(index, date)?) ^ i2b(b.eval(index, date)?)),
})
}
}
@ -341,29 +341,29 @@ impl FormulaSpec {
s.limit_from_until(range)
}
fn dates(&self, file: usize, start: NaiveDate) -> Result<Dates> {
let root = self.start_delta.apply_date(file, start)?;
fn dates(&self, index: usize, start: NaiveDate) -> Result<Dates> {
let root = self.start_delta.apply_date(index, start)?;
Ok(if let Some(root_time) = self.start_time {
let (other, other_time) = self.end_delta.apply_date_time(file, root, root_time)?;
let (other, other_time) = self.end_delta.apply_date_time(index, root, root_time)?;
Dates::new_with_time(root, root_time, other, other_time)
} else {
let other = self.end_delta.apply_date(file, root)?;
let other = self.end_delta.apply_date(index, root)?;
Dates::new(root, other)
})
}
fn eval(&self, file: usize, date: NaiveDate) -> Result<bool> {
Ok(i2b(self.start.eval(file, date)?))
fn eval(&self, index: usize, date: NaiveDate) -> Result<bool> {
Ok(i2b(self.start.eval(index, date)?))
}
}
impl<'a> CommandState<'a> {
pub fn eval_formula_spec(&mut self, spec: FormulaSpec) -> Result<()> {
if let Some(range) = spec.range(self) {
let file = self.command.source.file();
let index = self.command.source.file();
for day in range.days() {
if spec.eval(file, day)? {
let dates = spec.dates(file, day)?;
if spec.eval(index, day)? {
let dates = spec.dates(index, day)?;
self.add(self.kind(), Some(dates));
}
}

22
src/eval/delta.rs
View file

@ -143,7 +143,7 @@ impl From<&commands::Delta> for Delta {
}
struct DeltaEval {
file: usize,
index: usize,
start: NaiveDate,
start_time: Option<Time>,
curr: NaiveDate,
@ -151,9 +151,9 @@ struct DeltaEval {
}
impl DeltaEval {
fn new(file: usize, start: NaiveDate, start_time: Option<Time>) -> Self {
fn new(index: usize, start: NaiveDate, start_time: Option<Time>) -> Self {
Self {
file,
index,
start,
start_time,
curr: start,
@ -163,7 +163,7 @@ impl DeltaEval {
fn err_step(&self, span: Span) -> Error {
Error::DeltaInvalidStep {
file: self.file,
index: self.index,
span,
start: self.start,
start_time: self.start_time,
@ -174,7 +174,7 @@ impl DeltaEval {
fn err_time(&self, span: Span) -> Error {
Error::DeltaNoTime {
file: self.file,
index: self.index,
span,
start: self.start,
prev: self.curr,
@ -315,27 +315,27 @@ impl Delta {
fn apply(
&self,
file: usize,
index: usize,
start: (NaiveDate, Option<Time>),
) -> Result<(NaiveDate, Option<Time>)> {
let mut eval = DeltaEval::new(file, start.0, start.1);
let mut eval = DeltaEval::new(index, start.0, start.1);
for step in &self.steps {
eval.apply(step)?;
}
Ok((eval.curr, eval.curr_time))
}
pub fn apply_date(&self, file: usize, date: NaiveDate) -> Result<NaiveDate> {
Ok(self.apply(file, (date, None))?.0)
pub fn apply_date(&self, index: usize, date: NaiveDate) -> Result<NaiveDate> {
Ok(self.apply(index, (date, None))?.0)
}
pub fn apply_date_time(
&self,
file: usize,
index: usize,
date: NaiveDate,
time: Time,
) -> Result<(NaiveDate, Time)> {
let (date, time) = self.apply(file, (date, Some(time)))?;
let (date, time) = self.apply(index, (date, Some(time)))?;
Ok((date, time.expect("time was not preserved")))
}
}

63
src/eval/error.rs
View file

@ -3,14 +3,13 @@ use std::result;
use chrono::NaiveDate;
use crate::files::primitives::{Span, Time};
use crate::files::Files;
#[derive(Debug, thiserror::Error)]
pub enum Error {
/// A delta step resulted in an invalid date.
#[error("delta step resulted in invalid date")]
DeltaInvalidStep {
file: usize,
index: usize,
span: Span,
start: NaiveDate,
start_time: Option<Time>,
@ -20,7 +19,7 @@ pub enum Error {
/// A time-based delta step was applied to a date without time.
#[error("time-based delta step applied to date without time")]
DeltaNoTime {
file: usize,
index: usize,
span: Span,
start: NaiveDate,
prev: NaiveDate,
@ -30,7 +29,7 @@ pub enum Error {
/// in time (`to < from`).
#[error("repeat delta did not move forwards")]
RepeatDidNotMoveForwards {
file: usize,
index: usize,
span: Span,
from: NaiveDate,
to: NaiveDate,
@ -38,38 +37,48 @@ 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 { file: usize, span: Span },
MoveWithoutSource { index: usize, span: Span },
/// A division by zero has occurred.
#[error("tried to divide by zero")]
DivByZero {
file: usize,
index: usize,
span: Span,
date: NaiveDate,
},
/// A modulo operation by zero has occurred.
#[error("tried to modulo by zero")]
ModByZero {
file: usize,
index: usize,
span: Span,
date: NaiveDate,
},
/// Easter calculation failed.
#[error("easter calculation failed")]
Easter {
file: usize,
index: usize,
span: Span,
date: NaiveDate,
msg: &'static str,
},
}
pub struct SourceInfo<'a> {
pub name: Option<String>,
pub content: &'a str,
}
impl Error {
fn print_at(files: &Files, file: &usize, span: &Span, message: String) {
fn print_at<'a>(sources: &[SourceInfo<'a>], index: &usize, span: &Span, message: String) {
use pest::error as pe;
let (name, content) = files.file(*file).expect("file index is valid");
let span = pest::Span::new(content, span.start, span.end).expect("span is valid");
let source = sources.get(*index).expect("index is valid");
let span = pest::Span::new(source.content, span.start, span.end).expect("span is valid");
let variant = pe::ErrorVariant::<()>::CustomError { message };
let error = pe::Error::new_from_span(variant, span).with_path(&name.to_string_lossy());
let mut error = pe::Error::new_from_span(variant, span);
if let Some(name) = &source.name {
error = error.with_path(name);
}
eprintln!("{}", error);
}
@ -80,10 +89,10 @@ impl Error {
}
}
pub fn print(&self, files: &Files) {
pub fn print<'a>(&self, sources: &[SourceInfo<'a>]) {
match self {
Error::DeltaInvalidStep {
file,
index,
span,
start,
start_time,
@ -97,10 +106,10 @@ impl Error {
Self::fmt_date_time(*start, *start_time),
Self::fmt_date_time(*prev, *prev_time),
);
Self::print_at(files, file, span, msg);
Self::print_at(sources, index, span, msg);
}
Error::DeltaNoTime {
file,
index,
span,
start,
prev,
@ -111,10 +120,10 @@ impl Error {
\nPrevious step: {}",
start, prev
);
Self::print_at(files, file, span, msg);
Self::print_at(sources, index, span, msg);
}
Error::RepeatDidNotMoveForwards {
file,
index,
span,
from,
to,
@ -124,30 +133,30 @@ impl Error {
\nMoved from {} to {}",
from, to
);
Self::print_at(files, file, span, msg);
Self::print_at(sources, index, span, msg);
}
Error::MoveWithoutSource { file, span } => {
Error::MoveWithoutSource { index, span } => {
let msg = "Tried to move nonexisting entry".to_string();
Self::print_at(files, file, span, msg);
Self::print_at(sources, index, span, msg);
}
Error::DivByZero { file, span, date } => {
Error::DivByZero { index, span, date } => {
let msg = format!(
"Tried to divide by zero\
\nAt date: {}",
date
);
Self::print_at(files, file, span, msg);
Self::print_at(sources, index, span, msg);
}
Error::ModByZero { file, span, date } => {
Error::ModByZero { index, span, date } => {
let msg = format!(
"Tried to modulo by zero\
\nAt date: {}",
date
);
Self::print_at(files, file, span, msg);
Self::print_at(sources, index, span, msg);
}
Error::Easter {
file,
index,
span,
date,
msg,
@ -158,7 +167,7 @@ impl Error {
\nReason: {}",
date, msg
);
Self::print_at(files, file, span, msg);
Self::print_at(sources, index, span, msg);
}
}
}