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#![forbid(unsafe_code)]
#![deny(clippy::all)]
#![deny(clippy::pedantic)]
#![deny(clippy::use_self)]
#![forbid(clippy::needless_borrow)]
#![forbid(unreachable_pub)]
#![forbid(elided_lifetimes_in_paths)]
#![doc(html_root_url = "https://docs.rs/fend-core/0.1.21")]
mod ast;
mod date;
mod error;
mod eval;
mod format;
mod ident;
mod interrupt;
mod lexer;
mod num;
mod parser;
mod scope;
mod units;
mod value;
use std::collections::HashMap;
pub use interrupt::Interrupt;
#[derive(PartialEq, Eq, Debug)]
pub struct FendResult {
plain_result: String,
span_result: Vec<Span>,
}
#[derive(Debug, Clone, Copy, Eq, PartialEq)]
#[non_exhaustive]
pub enum SpanKind {
Number,
BuiltInFunction,
Keyword,
String,
Date,
Whitespace,
Ident,
Boolean,
Other,
}
#[derive(Clone, Debug, PartialEq, Eq)]
struct Span {
string: String,
kind: SpanKind,
}
impl Span {
fn from_string(s: String) -> Self {
Self {
string: s,
kind: SpanKind::Other,
}
}
}
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct SpanRef<'a> {
string: &'a str,
kind: SpanKind,
}
impl<'a> SpanRef<'a> {
#[must_use]
pub fn kind(self) -> SpanKind {
self.kind
}
#[must_use]
pub fn string(self) -> &'a str {
self.string
}
}
impl FendResult {
#[must_use]
pub fn get_main_result(&self) -> &str {
self.plain_result.as_str()
}
pub fn get_main_result_spans(&self) -> impl Iterator<Item = SpanRef<'_>> {
self.span_result.iter().map(|span| SpanRef {
string: &span.string,
kind: span.kind,
})
}
#[deprecated]
#[allow(clippy::unused_self)]
pub fn get_other_info(&self) -> impl Iterator<Item = &str> {
std::iter::empty()
}
}
#[derive(Clone, Debug)]
struct CurrentTimeInfo {
elapsed_unix_time_ms: u64,
timezone_offset_secs: i64,
}
#[derive(Clone, Debug, PartialEq, Eq)]
enum FCMode {
CelsiusFahrenheit,
CoulombFarad,
}
#[derive(Clone, Debug, PartialEq, Eq)]
enum OutputMode {
SimpleText,
TerminalFixedWidth,
}
#[derive(Clone, Debug)]
pub struct Context {
current_time: Option<CurrentTimeInfo>,
variables: HashMap<String, value::Value>,
fc_mode: FCMode,
random_u32: Option<fn() -> u32>,
output_mode: OutputMode,
}
impl Default for Context {
fn default() -> Self {
Self::new()
}
}
impl Context {
#[must_use]
pub fn new() -> Self {
Self {
current_time: None,
variables: HashMap::new(),
fc_mode: FCMode::CelsiusFahrenheit,
random_u32: None,
output_mode: OutputMode::SimpleText,
}
}
pub fn set_current_time_v1(&mut self, _ms_since_1970: u64, _tz_offset_secs: i64) {
self.current_time = None;
}
pub fn use_coulomb_and_farad(&mut self) {
self.fc_mode = FCMode::CoulombFarad;
}
pub fn set_random_u32_fn(&mut self, random_u32: fn() -> u32) {
self.random_u32 = Some(random_u32);
}
pub fn disable_rng(&mut self) {
self.random_u32 = None;
}
pub fn set_output_mode_terminal(&mut self) {
self.output_mode = OutputMode::TerminalFixedWidth;
}
}
pub fn evaluate(input: &str, context: &mut Context) -> Result<FendResult, String> {
evaluate_with_interrupt(input, context, &interrupt::Never::default())
}
pub fn evaluate_with_interrupt(
input: &str,
context: &mut Context,
int: &impl Interrupt,
) -> Result<FendResult, String> {
if input.is_empty() {
return Ok(FendResult {
plain_result: String::new(),
span_result: vec![],
});
}
let result = match eval::evaluate_to_spans(input, None, context, int) {
Ok(value) => value,
Err(e) => return Err(e.to_string()),
};
let mut plain_result = String::new();
for s in &result {
plain_result.push_str(&s.string);
}
Ok(FendResult {
plain_result,
span_result: result,
})
}
const fn get_version_as_str() -> &'static str {
"0.1.21"
}
#[must_use]
pub fn get_version() -> String {
get_version_as_str().to_string()
}
#[must_use]
#[deprecated = "use `get_version()` instead"]
pub fn get_extended_version() -> String {
get_version()
}