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commit
7e76fc4008
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "2.0.101"
|
||||
@ -160,6 +515,27 @@ dependencies = [
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "synstructure"
|
||||
version = "0.13.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tinystr"
|
||||
version = "0.8.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "42d3e9c45c09de15d06dd8acf5f4e0e399e85927b7f00711024eb7ae10fa4869"
|
||||
dependencies = [
|
||||
"displaydoc",
|
||||
"zerovec",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
version = "1.0.18"
|
||||
@ -172,6 +548,54 @@ version = "1.12.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f6ccf251212114b54433ec949fd6a7841275f9ada20dddd2f29e9ceea4501493"
|
||||
|
||||
[[package]]
|
||||
name = "untrusted"
|
||||
version = "0.9.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
|
||||
|
||||
[[package]]
|
||||
name = "ureq"
|
||||
version = "2.12.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "02d1a66277ed75f640d608235660df48c8e3c19f3b4edb6a263315626cc3c01d"
|
||||
dependencies = [
|
||||
"base64",
|
||||
"flate2",
|
||||
"log",
|
||||
"once_cell",
|
||||
"rustls",
|
||||
"rustls-pki-types",
|
||||
"serde",
|
||||
"serde_json",
|
||||
"url",
|
||||
"webpki-roots 0.26.11",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "url"
|
||||
version = "2.5.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "08bc136a29a3d1758e07a9cca267be308aeebf5cfd5a10f3f67ab2097683ef5b"
|
||||
dependencies = [
|
||||
"form_urlencoded",
|
||||
"idna",
|
||||
"percent-encoding",
|
||||
"serde",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "utf8_iter"
|
||||
version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
|
||||
|
||||
[[package]]
|
||||
name = "wasi"
|
||||
version = "0.11.1+wasi-snapshot-preview1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen"
|
||||
version = "0.2.100"
|
||||
@ -239,3 +663,183 @@ dependencies = [
|
||||
"js-sys",
|
||||
"wasm-bindgen",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "webpki-roots"
|
||||
version = "0.26.11"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9"
|
||||
dependencies = [
|
||||
"webpki-roots 1.0.4",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "webpki-roots"
|
||||
version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b2878ef029c47c6e8cf779119f20fcf52bde7ad42a731b2a304bc221df17571e"
|
||||
dependencies = [
|
||||
"rustls-pki-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.52.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
|
||||
dependencies = [
|
||||
"windows-targets",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-targets"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_gnullvm",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||
|
||||
[[package]]
|
||||
name = "writeable"
|
||||
version = "0.6.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9edde0db4769d2dc68579893f2306b26c6ecfbe0ef499b013d731b7b9247e0b9"
|
||||
|
||||
[[package]]
|
||||
name = "yoke"
|
||||
version = "0.8.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "72d6e5c6afb84d73944e5cedb052c4680d5657337201555f9f2a16b7406d4954"
|
||||
dependencies = [
|
||||
"stable_deref_trait",
|
||||
"yoke-derive",
|
||||
"zerofrom",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "yoke-derive"
|
||||
version = "0.8.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b659052874eb698efe5b9e8cf382204678a0086ebf46982b79d6ca3182927e5d"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"synstructure",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerofrom"
|
||||
version = "0.1.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "50cc42e0333e05660c3587f3bf9d0478688e15d870fab3346451ce7f8c9fbea5"
|
||||
dependencies = [
|
||||
"zerofrom-derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerofrom-derive"
|
||||
version = "0.1.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"synstructure",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zeroize"
|
||||
version = "1.8.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
|
||||
|
||||
[[package]]
|
||||
name = "zerotrie"
|
||||
version = "0.2.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "2a59c17a5562d507e4b54960e8569ebee33bee890c70aa3fe7b97e85a9fd7851"
|
||||
dependencies = [
|
||||
"displaydoc",
|
||||
"yoke",
|
||||
"zerofrom",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerovec"
|
||||
version = "0.11.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6c28719294829477f525be0186d13efa9a3c602f7ec202ca9e353d310fb9a002"
|
||||
dependencies = [
|
||||
"yoke",
|
||||
"zerofrom",
|
||||
"zerovec-derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerovec-derive"
|
||||
version = "0.11.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "eadce39539ca5cb3985590102671f2567e659fca9666581ad3411d59207951f3"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
11
Cargo.toml
11
Cargo.toml
@ -10,6 +10,7 @@ homepage = "https://github.com/probablykasper/cpc#readme"
|
||||
repository = "https://github.com/probablykasper/cpc"
|
||||
documentation = "https://docs.rs/cpc"
|
||||
keywords = ["math", "expression", "evaluate", "units", "convert"]
|
||||
autobins = false
|
||||
categories = [
|
||||
"mathematics",
|
||||
"science",
|
||||
@ -18,6 +19,10 @@ categories = [
|
||||
"value-formatting",
|
||||
]
|
||||
|
||||
[[bin]]
|
||||
name = "cpc_cli"
|
||||
path = "src/main.rs"
|
||||
|
||||
[lib]
|
||||
crate-type = ["cdylib", "rlib"]
|
||||
|
||||
@ -25,6 +30,12 @@ crate-type = ["cdylib", "rlib"]
|
||||
fastnum = "0.2"
|
||||
unicode-segmentation = "1.12"
|
||||
web-time = "1.1.0"
|
||||
once_cell = "1.20"
|
||||
serde = { version = "1.0", features = ["derive"] }
|
||||
serde_json = "1.0"
|
||||
|
||||
[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
|
||||
ureq = { version = "2.12", features = ["json"] }
|
||||
|
||||
[target.'cfg(target_arch = "wasm32")'.dependencies]
|
||||
console_error_panic_hook = "0.1.7"
|
||||
|
||||
145
src/currency.rs
Normal file
145
src/currency.rs
Normal file
@ -0,0 +1,145 @@
|
||||
use crate::extra_units;
|
||||
use crate::units::UnitType;
|
||||
use fastnum::decimal::Context;
|
||||
use fastnum::D128;
|
||||
use serde_json::Value;
|
||||
|
||||
const EXCHANGE_RATE_API_USD_LATEST: &str = "https://api.exchangerate-api.com/v4/latest/USD";
|
||||
|
||||
fn parse_d128_from_json_number(v: &Value) -> Result<D128, String> {
|
||||
let s = match v {
|
||||
Value::Number(n) => n.to_string(),
|
||||
_ => return Err("Expected JSON number".to_string()),
|
||||
};
|
||||
D128::from_str(&s, Context::default())
|
||||
.map_err(|_| format!("Invalid decimal number: {s}"))
|
||||
}
|
||||
|
||||
/// Registers/updates currencies from the ExchangeRate API JSON response (base USD).
|
||||
///
|
||||
/// The JSON is expected to look like `{"base":"USD","rates":{"EUR":0.852,...}}`.
|
||||
///
|
||||
/// Internally we store a "weight" as USD-per-unit, so conversions use the existing
|
||||
/// `from.weight()/to.weight()` logic.
|
||||
pub fn register_currencies_from_exchange_rate_api_json(json: &str) -> Result<usize, String> {
|
||||
let v: Value = serde_json::from_str(json).map_err(|e| format!("Invalid JSON: {e}"))?;
|
||||
|
||||
let base = v
|
||||
.get("base")
|
||||
.and_then(|b| b.as_str())
|
||||
.ok_or("Missing 'base'")?;
|
||||
if base != "USD" {
|
||||
return Err(format!("Expected base USD but got {base}"));
|
||||
}
|
||||
|
||||
let rates = v
|
||||
.get("rates")
|
||||
.and_then(|r| r.as_object())
|
||||
.ok_or("Missing 'rates' object")?;
|
||||
|
||||
let mut count = 0usize;
|
||||
for (code, rate_value) in rates {
|
||||
// Skip weird/empty keys defensively
|
||||
if code.len() != 3 {
|
||||
continue;
|
||||
}
|
||||
let code_upper = code.to_ascii_uppercase();
|
||||
let code_lower = code.to_ascii_lowercase();
|
||||
|
||||
let rate = parse_d128_from_json_number(rate_value)?;
|
||||
if rate.is_zero() {
|
||||
continue;
|
||||
}
|
||||
// weight = USD per 1 {CODE} = 1 / (CODE per 1 USD)
|
||||
let weight = D128::ONE / rate;
|
||||
|
||||
extra_units::upsert_unit(
|
||||
&code_lower,
|
||||
&code_upper,
|
||||
&code_upper,
|
||||
UnitType::Currency,
|
||||
weight,
|
||||
);
|
||||
count += 1;
|
||||
}
|
||||
|
||||
Ok(count)
|
||||
}
|
||||
|
||||
#[cfg(not(target_arch = "wasm32"))]
|
||||
fn cache_path() -> std::path::PathBuf {
|
||||
let mut p = std::env::temp_dir();
|
||||
p.push("cpc_currency_rates_usd.json");
|
||||
p
|
||||
}
|
||||
|
||||
#[cfg(not(target_arch = "wasm32"))]
|
||||
pub fn init_currencies_blocking() -> Result<usize, String> {
|
||||
// 1) Load cached (if any) so currencies work offline.
|
||||
let mut cached_count = 0usize;
|
||||
let cache_path = cache_path();
|
||||
if let Ok(s) = std::fs::read_to_string(&cache_path) {
|
||||
if let Ok(n) = register_currencies_from_exchange_rate_api_json(&s) {
|
||||
cached_count = n;
|
||||
}
|
||||
}
|
||||
|
||||
// 2) Try refresh from network.
|
||||
let resp = ureq::get(EXCHANGE_RATE_API_USD_LATEST)
|
||||
.call()
|
||||
.map_err(|e| format!("Currency fetch failed: {e}"))?;
|
||||
let body = resp
|
||||
.into_string()
|
||||
.map_err(|e| format!("Currency fetch read failed: {e}"))?;
|
||||
|
||||
let n = register_currencies_from_exchange_rate_api_json(&body)?;
|
||||
// Best-effort cache write
|
||||
let _ = std::fs::write(&cache_path, body);
|
||||
|
||||
Ok(std::cmp::max(cached_count, n))
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use crate::extra_units;
|
||||
use crate::units::{convert, Unit};
|
||||
use crate::Number;
|
||||
use fastnum::dec128 as d;
|
||||
|
||||
#[test]
|
||||
fn register_and_convert_currency() {
|
||||
extra_units::clear_for_tests();
|
||||
|
||||
let json = r#"{
|
||||
"base": "USD",
|
||||
"rates": {
|
||||
"USD": 1,
|
||||
"EUR": 0.5
|
||||
}
|
||||
}"#;
|
||||
|
||||
let n = register_currencies_from_exchange_rate_api_json(json).unwrap();
|
||||
assert_eq!(n, 2);
|
||||
|
||||
let usd = extra_units::lookup_unit("usd").unwrap();
|
||||
let eur = extra_units::lookup_unit("eur").unwrap();
|
||||
|
||||
let one_usd = Number::new(d!(1), usd);
|
||||
let eur_amount = convert(one_usd, eur).unwrap();
|
||||
assert_eq!(eur_amount.value, d!(0.5));
|
||||
|
||||
let one_eur = Number::new(d!(1), eur);
|
||||
let usd_amount = convert(one_eur, usd).unwrap();
|
||||
assert_eq!(usd_amount.value, d!(2));
|
||||
|
||||
// Display name should be currency code
|
||||
assert_eq!(eur_amount.unit.singular(), "EUR");
|
||||
assert_eq!(eur_amount.unit.plural(), "EUR");
|
||||
|
||||
// Sanity: it's still a Unit
|
||||
let _ = Unit::NoUnit;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
125
src/extra_units.rs
Normal file
125
src/extra_units.rs
Normal file
@ -0,0 +1,125 @@
|
||||
use crate::units::{Unit, UnitType};
|
||||
use fastnum::D128;
|
||||
use once_cell::sync::Lazy;
|
||||
use std::collections::HashMap;
|
||||
use std::sync::RwLock;
|
||||
|
||||
#[derive(Clone, Copy)]
|
||||
pub(crate) struct ExtraUnitDef {
|
||||
pub(crate) category: UnitType,
|
||||
pub(crate) weight: D128,
|
||||
pub(crate) singular: &'static str,
|
||||
pub(crate) plural: &'static str,
|
||||
}
|
||||
|
||||
#[derive(Default)]
|
||||
struct Registry {
|
||||
by_name: HashMap<&'static str, u16>,
|
||||
units: Vec<ExtraUnitDef>,
|
||||
}
|
||||
|
||||
static REGISTRY: Lazy<RwLock<Registry>> = Lazy::new(|| RwLock::new(Registry::default()));
|
||||
|
||||
fn leak_str(s: String) -> &'static str {
|
||||
Box::leak(s.into_boxed_str())
|
||||
}
|
||||
|
||||
pub(crate) fn lookup_unit(word: &str) -> Option<Unit> {
|
||||
let reg = REGISTRY.read().ok()?;
|
||||
let id = *reg.by_name.get(word)?;
|
||||
Some(Unit::Extra(id))
|
||||
}
|
||||
|
||||
pub(crate) fn upsert_unit(
|
||||
name_lowercase: &str,
|
||||
singular: &str,
|
||||
plural: &str,
|
||||
category: UnitType,
|
||||
weight: D128,
|
||||
) -> Unit {
|
||||
let mut reg = REGISTRY
|
||||
.write()
|
||||
.expect("extra unit registry lock poisoned");
|
||||
|
||||
if let Some(existing_id) = reg.by_name.get(name_lowercase).copied() {
|
||||
let idx = existing_id as usize;
|
||||
reg.units[idx] = ExtraUnitDef {
|
||||
category,
|
||||
weight,
|
||||
singular: reg.units[idx].singular,
|
||||
plural: reg.units[idx].plural,
|
||||
};
|
||||
return Unit::Extra(existing_id);
|
||||
}
|
||||
|
||||
let id: u16 = reg
|
||||
.units
|
||||
.len()
|
||||
.try_into()
|
||||
.expect("too many extra units registered");
|
||||
|
||||
let key = leak_str(name_lowercase.to_string());
|
||||
let singular = leak_str(singular.to_string());
|
||||
let plural = leak_str(plural.to_string());
|
||||
|
||||
reg.by_name.insert(key, id);
|
||||
reg.units.push(ExtraUnitDef {
|
||||
category,
|
||||
weight,
|
||||
singular,
|
||||
plural,
|
||||
});
|
||||
|
||||
Unit::Extra(id)
|
||||
}
|
||||
|
||||
pub(crate) fn get_category(id: u16) -> UnitType {
|
||||
let reg = REGISTRY
|
||||
.read()
|
||||
.expect("extra unit registry lock poisoned");
|
||||
reg.units
|
||||
.get(id as usize)
|
||||
.map(|u| u.category)
|
||||
.unwrap_or(UnitType::NoType)
|
||||
}
|
||||
|
||||
pub(crate) fn get_weight(id: u16) -> D128 {
|
||||
let reg = REGISTRY
|
||||
.read()
|
||||
.expect("extra unit registry lock poisoned");
|
||||
reg.units
|
||||
.get(id as usize)
|
||||
.map(|u| u.weight)
|
||||
.unwrap_or(D128::NAN)
|
||||
}
|
||||
|
||||
pub(crate) fn get_singular(id: u16) -> &'static str {
|
||||
let reg = REGISTRY
|
||||
.read()
|
||||
.expect("extra unit registry lock poisoned");
|
||||
reg.units
|
||||
.get(id as usize)
|
||||
.map(|u| u.singular)
|
||||
.unwrap_or("")
|
||||
}
|
||||
|
||||
pub(crate) fn get_plural(id: u16) -> &'static str {
|
||||
let reg = REGISTRY
|
||||
.read()
|
||||
.expect("extra unit registry lock poisoned");
|
||||
reg.units
|
||||
.get(id as usize)
|
||||
.map(|u| u.plural)
|
||||
.unwrap_or("")
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
pub(crate) fn clear_for_tests() {
|
||||
let mut reg = REGISTRY
|
||||
.write()
|
||||
.expect("extra unit registry lock poisoned");
|
||||
reg.by_name.clear();
|
||||
reg.units.clear();
|
||||
}
|
||||
|
||||
|
||||
105
src/lexer.rs
105
src/lexer.rs
@ -10,6 +10,8 @@ use crate::Constant::{E, Pi};
|
||||
use crate::LexerKeyword::{In, PercentChar, Per, Mercury, Hg, PoundForce, Force, DoubleQuotes, Revolution};
|
||||
use crate::FunctionIdentifier::{Cbrt, Ceil, Cos, Exp, Abs, Floor, Ln, Log, Round, Sin, Sqrt, Tan};
|
||||
use crate::units::Unit::*;
|
||||
use crate::extra_units;
|
||||
use crate::units::UnitType;
|
||||
use unicode_segmentation::{Graphemes, UnicodeSegmentation};
|
||||
|
||||
fn is_word_char_str(input: &str) -> bool {
|
||||
@ -591,7 +593,11 @@ fn parse_word(word: &str, lexer: &mut Lexer) -> Result<(), String> {
|
||||
"f" | "fahrenheit" | "fahrenheits" => Token::Unit(Fahrenheit),
|
||||
|
||||
string => {
|
||||
return Err(format!("Invalid string: {}", string));
|
||||
if let Some(unit) = extra_units::lookup_unit(string) {
|
||||
Token::Unit(unit)
|
||||
} else {
|
||||
return Err(format!("Invalid string: {}", string));
|
||||
}
|
||||
}
|
||||
};
|
||||
lexer.tokens.push(token);
|
||||
@ -903,6 +909,103 @@ pub fn lex(input: &str, remove_trailing_operator: bool) -> Result<Vec<Token>, St
|
||||
(Token::LexerKeyword(Revolution), Token::LexerKeyword(Per), Token::Unit(Minute)) => {
|
||||
tokens[token_index-2] = Token::Unit(RevolutionsPerMinute);
|
||||
},
|
||||
// currency per {mass|volume|length|area}, for example usd/lb, cny/kg, usd/l, usd/m, usd/m2
|
||||
(Token::Unit(left_u), Token::LexerKeyword(Per), Token::Unit(right_u)) => {
|
||||
let left_cat = left_u.category();
|
||||
let right_cat = right_u.category();
|
||||
if left_cat == UnitType::Currency
|
||||
&& (right_cat == UnitType::Mass
|
||||
|| right_cat == UnitType::Volume
|
||||
|| right_cat == UnitType::Length
|
||||
|| right_cat == UnitType::Area)
|
||||
{
|
||||
let cur_upper = left_u.singular().to_ascii_uppercase();
|
||||
let cur_lower = cur_upper.to_ascii_lowercase();
|
||||
let denom_abbrev: &str = match (*right_u, right_cat) {
|
||||
// Mass
|
||||
(Milligram, UnitType::Mass) => "mg",
|
||||
(Gram, UnitType::Mass) => "g",
|
||||
(Hectogram, UnitType::Mass) => "hg",
|
||||
(Kilogram, UnitType::Mass) => "kg",
|
||||
(MetricTon, UnitType::Mass) => "t",
|
||||
(Ounce, UnitType::Mass) => "oz",
|
||||
(Pound, UnitType::Mass) => "lb",
|
||||
(Stone, UnitType::Mass) => "st",
|
||||
(ShortTon, UnitType::Mass) => "ston",
|
||||
(LongTon, UnitType::Mass) => "lton",
|
||||
|
||||
// Volume
|
||||
(Milliliter, UnitType::Volume) => "ml",
|
||||
(Centiliter, UnitType::Volume) => "cl",
|
||||
(Deciliter, UnitType::Volume) => "dl",
|
||||
(Liter, UnitType::Volume) => "l",
|
||||
(Teaspoon, UnitType::Volume) => "tsp",
|
||||
(Tablespoon, UnitType::Volume) => "tbsp",
|
||||
(FluidOunce, UnitType::Volume) => "floz",
|
||||
(Cup, UnitType::Volume) => "cup",
|
||||
(Pint, UnitType::Volume) => "pt",
|
||||
(Quart, UnitType::Volume) => "qt",
|
||||
(Gallon, UnitType::Volume) => "gal",
|
||||
(OilBarrel, UnitType::Volume) => "bbl",
|
||||
|
||||
// Length
|
||||
(Millimeter, UnitType::Length) => "mm",
|
||||
(Centimeter, UnitType::Length) => "cm",
|
||||
(Decimeter, UnitType::Length) => "dm",
|
||||
(Meter, UnitType::Length) => "m",
|
||||
(Kilometer, UnitType::Length) => "km",
|
||||
(Inch, UnitType::Length) => "in",
|
||||
(Foot, UnitType::Length) => "ft",
|
||||
(Yard, UnitType::Length) => "yd",
|
||||
(Mile, UnitType::Length) => "mi",
|
||||
(Marathon, UnitType::Length) => "marathon",
|
||||
(NauticalMile, UnitType::Length) => "nmi",
|
||||
(LightYear, UnitType::Length) => "ly",
|
||||
(LightSecond, UnitType::Length) => "lightsec",
|
||||
|
||||
// Area
|
||||
(SquareMillimeter, UnitType::Area) => "mm2",
|
||||
(SquareCentimeter, UnitType::Area) => "cm2",
|
||||
(SquareDecimeter, UnitType::Area) => "dm2",
|
||||
(SquareMeter, UnitType::Area) => "m2",
|
||||
(SquareKilometer, UnitType::Area) => "km2",
|
||||
(SquareInch, UnitType::Area) => "in2",
|
||||
(SquareFoot, UnitType::Area) => "ft2",
|
||||
(SquareYard, UnitType::Area) => "yd2",
|
||||
(SquareMile, UnitType::Area) => "mi2",
|
||||
(Are, UnitType::Area) => "a",
|
||||
(Decare, UnitType::Area) => "daa",
|
||||
(Hectare, UnitType::Area) => "ha",
|
||||
(Acre, UnitType::Area) => "acre",
|
||||
|
||||
_ => right_u.singular(),
|
||||
};
|
||||
let display = format!("{}/{}", cur_upper, denom_abbrev);
|
||||
let key = format!("{cur_lower}_per_{denom_abbrev}");
|
||||
// weight = (USD per currency unit) / (base volume-or-mass per denom unit)
|
||||
let weight = left_u.weight() / right_u.weight();
|
||||
let composite_type = match right_cat {
|
||||
UnitType::Mass => UnitType::CurrencyPerMass,
|
||||
UnitType::Volume => UnitType::CurrencyPerVolume,
|
||||
UnitType::Length => UnitType::CurrencyPerLength,
|
||||
UnitType::Area => UnitType::CurrencyPerArea,
|
||||
_ => {
|
||||
replaced = false;
|
||||
UnitType::CurrencyPerMass
|
||||
}
|
||||
};
|
||||
let composite = extra_units::upsert_unit(
|
||||
&key,
|
||||
&display,
|
||||
&display,
|
||||
composite_type,
|
||||
weight,
|
||||
);
|
||||
tokens[token_index-2] = Token::Unit(composite);
|
||||
} else {
|
||||
replaced = false;
|
||||
}
|
||||
},
|
||||
_ => {
|
||||
replaced = false;
|
||||
},
|
||||
|
||||
14
src/lib.rs
14
src/lib.rs
@ -34,6 +34,10 @@ pub mod evaluator;
|
||||
pub mod lexer;
|
||||
#[rustfmt::skip]
|
||||
mod lookup;
|
||||
#[rustfmt::skip]
|
||||
mod extra_units;
|
||||
/// Currency rate loading / registration (USD base from exchangerate-api)
|
||||
pub mod currency;
|
||||
/// Turns [`Token`]s into an [`AstNode`](parser::AstNode)
|
||||
pub mod parser;
|
||||
/// Units, and functions you can use with them
|
||||
@ -299,6 +303,16 @@ pub fn wasm_eval(expression: &str) -> String {
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(target_arch = "wasm32")]
|
||||
#[wasm_bindgen]
|
||||
pub fn wasm_set_currency_rates(json: &str) -> String {
|
||||
console_error_panic_hook::set_once();
|
||||
match currency::register_currencies_from_exchange_rate_api_json(json) {
|
||||
Ok(n) => format!("OK ({n} currencies)"),
|
||||
Err(e) => format!("Error: {e}"),
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
@ -1,4 +1,6 @@
|
||||
use cpc::eval;
|
||||
#[cfg(not(target_arch = "wasm32"))]
|
||||
use cpc::currency;
|
||||
use std::env;
|
||||
use std::process::exit;
|
||||
|
||||
@ -60,6 +62,12 @@ fn main() {
|
||||
}
|
||||
};
|
||||
|
||||
// Best-effort: load currency rates so `usd`, `eur`, etc work as extra units.
|
||||
#[cfg(not(target_arch = "wasm32"))]
|
||||
{
|
||||
let _ = currency::init_currencies_blocking();
|
||||
}
|
||||
|
||||
match eval(&expression, true, verbose) {
|
||||
Ok(answer) => {
|
||||
if !verbose {
|
||||
|
||||
27
src/units.rs
27
src/units.rs
@ -1,5 +1,6 @@
|
||||
use fastnum::{dec128 as d, D128};
|
||||
use crate::Number;
|
||||
use crate::extra_units;
|
||||
|
||||
#[derive(Clone, Copy, PartialEq, Debug)]
|
||||
/// An enum of all possible unit types, like [`Length`], [`DigitalStorage`] etc.
|
||||
@ -39,6 +40,16 @@ pub enum UnitType {
|
||||
Speed,
|
||||
/// A unit of temperature, for example [`Kelvin`]
|
||||
Temperature,
|
||||
/// A currency unit, for example USD / EUR (loaded dynamically)
|
||||
Currency,
|
||||
/// A currency-per-mass unit, for example USD/lb or CNY/kg
|
||||
CurrencyPerMass,
|
||||
/// A currency-per-volume unit, for example USD/l or EUR/ml
|
||||
CurrencyPerVolume,
|
||||
/// A currency-per-length unit, for example USD/m or EUR/ft
|
||||
CurrencyPerLength,
|
||||
/// A currency-per-area unit, for example USD/m2 or EUR/ft2
|
||||
CurrencyPerArea,
|
||||
}
|
||||
use UnitType::*;
|
||||
|
||||
@ -50,7 +61,9 @@ macro_rules! create_units {
|
||||
#[derive(Clone, Copy, PartialEq, Debug)]
|
||||
/// A Unit enum. Note that it can also be [`NoUnit`].
|
||||
pub enum Unit {
|
||||
$($variant),*
|
||||
$($variant),*,
|
||||
/// Runtime-registered unit (currencies, custom units, etc)
|
||||
Extra(u16)
|
||||
}
|
||||
use Unit::*;
|
||||
|
||||
@ -59,28 +72,32 @@ macro_rules! create_units {
|
||||
match self {
|
||||
$(
|
||||
Unit::$variant => $properties.0
|
||||
),*
|
||||
),*,
|
||||
Unit::Extra(id) => extra_units::get_category(*id),
|
||||
}
|
||||
}
|
||||
pub fn weight(&self) -> D128 {
|
||||
match self {
|
||||
$(
|
||||
Unit::$variant => $properties.1
|
||||
),*
|
||||
),*,
|
||||
Unit::Extra(id) => extra_units::get_weight(*id),
|
||||
}
|
||||
}
|
||||
pub(crate) fn singular(&self) -> &str {
|
||||
match self {
|
||||
$(
|
||||
Unit::$variant => $properties.2
|
||||
),*
|
||||
),*,
|
||||
Unit::Extra(id) => extra_units::get_singular(*id),
|
||||
}
|
||||
}
|
||||
pub(crate) fn plural(&self) -> &str {
|
||||
match self {
|
||||
$(
|
||||
Unit::$variant => $properties.3
|
||||
),*
|
||||
),*,
|
||||
Unit::Extra(id) => extra_units::get_plural(*id),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user