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2019: switch to anyhow

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This commit is contained in:
Antoine Martin 2020-12-14 19:24:43 +01:00
parent d91165207f
commit deb808faf3
19 changed files with 84 additions and 114 deletions
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11
aoc2019/src/day14.rs
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@ -2,8 +2,7 @@ use std::cmp::Ordering;
use std::collections::HashMap;
use std::fmt::Write;
use aoc::err;
use aoc::Result;
use anyhow::{Context, Result};
const INPUT: &str = include_str!("../input/day14.txt");
@ -22,7 +21,7 @@ fn parse_recipes(input: &str) -> Result<HashMap<String, Recipe>> {
for line in input.lines() {
let arrow = line
.find(" => ")
.ok_or_else(|| err!("couldn't find arrow in line: {}", line))?;
.with_context(|| format!("couldn't find arrow in line: {}", line))?;
let elems = &line[..arrow];
let elems = elems
@ -30,7 +29,7 @@ fn parse_recipes(input: &str) -> Result<HashMap<String, Recipe>> {
.map(|elem| {
let space = elem
.find(' ')
.ok_or_else(|| err!("couldn't find separator for elem {}", elem))?;
.with_context(|| format!("couldn't find separator for elem {}", elem))?;
let amount = elem[..space].parse()?;
let name = &elem[(space + 1)..];
@ -44,7 +43,7 @@ fn parse_recipes(input: &str) -> Result<HashMap<String, Recipe>> {
let result = &line[(arrow + 4)..].trim_end();
let space = result
.find(' ')
.ok_or_else(|| err!("couldn't find separator for result {}", result))?;
.with_context(|| format!("couldn't find separator for result {}", result))?;
let result_amount = result[..space].parse()?;
let result_name = &result[(space + 1)..];
@ -76,7 +75,7 @@ fn get_ore_cost(
if in_stock < quantity {
let recipe = recipes
.get(&material)
.ok_or_else(|| err!("couldn't find recipe for {}", material))?;
.with_context(|| format!("couldn't find recipe for {}", material))?;
let needed = quantity - in_stock;
let num_reactions = (needed + recipe.produced - 1) / recipe.produced;