59b20389ba
- Add support for phrases 'multiplied by' and 'divided by' - Add support for the division operator symbol ÷ - Fixed lexing of revolutions per minute units
1000 lines
48 KiB
Rust
1000 lines
48 KiB
Rust
use std::iter::Peekable;
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use std::str::FromStr;
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use decimal::d128;
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use crate::Token;
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use crate::Operator::{Caret, Divide, LeftParen, Minus, Modulo, Multiply, Plus, RightParen};
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use crate::UnaryOperator::{Percent, Factorial};
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use crate::TextOperator::{Of, To};
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use crate::NamedNumber::*;
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use crate::Constant::{E, Pi};
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use crate::LexerKeyword::{In, PercentChar, Per, Mercury, Hg, PoundForce, Force, DoubleQuotes, Revolution};
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use crate::FunctionIdentifier::{Cbrt, Ceil, Cos, Exp, Abs, Floor, Ln, Log, Round, Sin, Sqrt, Tan};
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use crate::units::Unit;
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use crate::units::Unit::*;
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use unicode_segmentation::{Graphemes, UnicodeSegmentation};
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fn is_word_char_str(input: &str) -> bool {
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let x = match input {
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"A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L"
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| "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X"
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| "Y" | "Z" => true,
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"a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l"
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| "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x"
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| "y" | "z" => true,
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"Ω" | "Ω" | "µ" | "μ" => true,
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_ => false,
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};
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return x;
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}
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fn is_numeric_str(input: &str) -> bool {
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match input {
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"." => true,
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"0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" => true,
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_ => false,
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}
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}
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/// Read next characters as a word, otherwise return empty string.
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/// Returns an empty string if there's leading whitespace.
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fn read_word_plain(chars: &mut Peekable<Graphemes>) -> String {
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let mut word = String::new();
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while let Some(next_char) = chars.peek() {
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if is_word_char_str(&next_char) {
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word += chars.next().unwrap();
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} else {
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break;
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}
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}
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return word;
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}
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/// Read next as a word, otherwise return empty string.
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/// Leading whitespace is ignored. A trailing digit may be included.
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fn read_word(first_c: &str, lexer: &mut Lexer) -> String {
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let chars = &mut lexer.chars;
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let mut word = first_c.trim().to_owned();
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if word == "" {
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// skip whitespace
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while let Some(current_char) = chars.peek() {
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if current_char.trim().is_empty() {
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chars.next();
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} else {
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break;
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}
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}
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}
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while let Some(next_char) = chars.peek() {
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if is_word_char_str(&next_char) {
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word += chars.next().unwrap();
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} else {
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break;
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}
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}
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if word != "" {
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match *chars.peek().unwrap_or(&"") {
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"2" | "²" => {
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word += "2";
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chars.next();
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},
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"3" | "³" => {
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word += "3";
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chars.next();
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},
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_ => {},
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}
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}
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return word;
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}
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fn parse_token(c: &str, lexer: &mut Lexer) -> Result<(), String> {
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let tokens = &mut lexer.tokens;
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match c {
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value if value.trim().is_empty() => {},
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value if is_word_char_str(&value) => {
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parse_word(read_word(c, lexer).as_str(), lexer)?;
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},
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value if is_numeric_str(value) => {
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let mut number_string = value.to_owned();
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while let Some(number_char) = lexer.chars.peek() {
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if is_numeric_str(number_char) {
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number_string += number_char;
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lexer.chars.next();
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} else {
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break;
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}
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}
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d128::set_status(decimal::Status::empty());
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match d128::from_str(&number_string) {
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Ok(number) => {
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if d128::get_status().is_empty() {
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tokens.push(Token::Number(number));
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} else {
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return Err(format!("Error lexing d128 number: {}", number_string));
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}
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},
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Err(_e) => {
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return Err(format!("Error lexing d128 number: {}", number_string));
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}
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};
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},
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"+" => tokens.push(Token::Operator(Plus)),
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"-" => tokens.push(Token::Operator(Minus)),
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"*" => tokens.push(Token::Operator(Multiply)),
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"/" | "÷" => tokens.push(Token::Operator(Divide)),
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"%" => tokens.push(Token::LexerKeyword(PercentChar)),
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"^" => tokens.push(Token::Operator(Caret)),
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"!" => tokens.push(Token::UnaryOperator(Factorial)),
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"(" => {
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// left_paren_count += 1;
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tokens.push(Token::Operator(LeftParen));
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},
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")" => {
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// right_paren_count += 1;
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tokens.push(Token::Operator(RightParen));
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},
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"π" => tokens.push(Token::Constant(Pi)),
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"'" => tokens.push(Token::Unit(Foot)),
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"\"" | "“" | "”" | "″" => tokens.push(Token::LexerKeyword(DoubleQuotes)),
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_ => {
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return Err(format!("Invalid character: {}", c));
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},
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}
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Ok(())
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}
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fn parse_word_if_non_empty(word: &str, lexer: &mut Lexer) -> Result<(), String> {
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match word {
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"" => Ok(()),
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_ => parse_word(word, lexer)
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}
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}
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fn parse_word(word: &str, lexer: &mut Lexer) -> Result<(), String> {
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let token = match word {
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"to" => Token::TextOperator(To),
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"of" => Token::TextOperator(Of),
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"hundred" => Token::NamedNumber(Hundred),
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"thousand" => Token::NamedNumber(Thousand),
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"mil" | "mill" | "million" => Token::NamedNumber(Million),
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"bil" | "bill" | "billion" => Token::NamedNumber(Billion),
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"tri" | "tril" | "trillion" => Token::NamedNumber(Trillion),
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"quadrillion" => Token::NamedNumber(Quadrillion),
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"quintillion" => Token::NamedNumber(Quintillion),
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"sextillion" => Token::NamedNumber(Sextillion),
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"septillion" => Token::NamedNumber(Septillion),
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"octillion" => Token::NamedNumber(Octillion),
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"nonillion" => Token::NamedNumber(Nonillion),
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"decillion" => Token::NamedNumber(Decillion),
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"undecillion" => Token::NamedNumber(Undecillion),
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"duodecillion" => Token::NamedNumber(Duodecillion),
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"tredecillion" => Token::NamedNumber(Tredecillion),
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"quattuordecillion" => Token::NamedNumber(Quattuordecillion),
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"quindecillion" => Token::NamedNumber(Quindecillion),
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"sexdecillion" => Token::NamedNumber(Sexdecillion),
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"septendecillion" => Token::NamedNumber(Septendecillion),
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"octodecillion" => Token::NamedNumber(Octodecillion),
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"novemdecillion" => Token::NamedNumber(Novemdecillion),
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"vigintillion" => Token::NamedNumber(Vigintillion),
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"centillion" => Token::NamedNumber(Centillion),
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"googol" => Token::NamedNumber(Googol),
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"pi" => Token::Constant(Pi),
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"e" => Token::Constant(E),
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"plus" => Token::Operator(Plus),
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"minus" => Token::Operator(Minus),
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"times" => Token::Operator(Multiply),
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"multiplied" => {
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match read_word("", lexer).as_str() {
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"by" => Token::Operator(Multiply),
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string => return Err(format!("Invalid string: {}", string)),
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}
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},
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"divided" => {
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match read_word("", lexer).as_str() {
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"by" => Token::Operator(Divide),
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string => return Err(format!("Invalid string: {}", string)),
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}
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},
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"mod" => Token::Operator(Modulo),
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"sqrt" => Token::FunctionIdentifier(Sqrt),
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"cbrt" => Token::FunctionIdentifier(Cbrt),
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"log" => Token::FunctionIdentifier(Log),
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"ln" => Token::FunctionIdentifier(Ln),
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"exp" => Token::FunctionIdentifier(Exp),
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"round" | "rint" => Token::FunctionIdentifier(Round),
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"ceil" => Token::FunctionIdentifier(Ceil),
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"floor" => Token::FunctionIdentifier(Floor),
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"abs" | "fabs" => Token::FunctionIdentifier(Abs),
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"sin" => Token::FunctionIdentifier(Sin),
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"cos" => Token::FunctionIdentifier(Cos),
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"tan" => Token::FunctionIdentifier(Tan),
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"per" => Token::LexerKeyword(Per),
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"hg" => Token::LexerKeyword(Hg), // can be hectogram or mercury
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"ns" | "nanosec" | "nanosecs" | "nanosecond" | "nanoseconds" => Token::Unit(Nanosecond),
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// µ and μ are two different characters
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"µs" | "μs" | "microsec" | "microsecs" | "microsecond" | "microseconds" => Token::Unit(Microsecond),
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"ms" | "millisec" | "millisecs" | "millisecond" | "milliseconds" => Token::Unit(Millisecond),
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"s" | "sec" | "secs" | "second" | "seconds" => Token::Unit(Second),
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"min" | "mins" | "minute" | "minutes" => Token::Unit(Minute),
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"h" | "hr" | "hrs" | "hour" | "hours" => Token::Unit(Hour),
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"day" | "days" => Token::Unit(Day),
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"wk" | "wks" | "week" | "weeks" => Token::Unit(Week),
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"mo" | "mos" | "month" | "months" => Token::Unit(Month),
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"q" | "quarter" | "quarters" => Token::Unit(Quarter),
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"yr" | "yrs" | "year" | "years" => Token::Unit(Year),
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"decade" | "decades" => Token::Unit(Decade),
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"century" | "centuries" => Token::Unit(Century),
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"millenium" | "millenia" | "milleniums" => Token::Unit(Millenium),
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"mm" | "millimeter" | "millimeters" | "millimetre" | "millimetres" => Token::Unit(Millimeter),
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"cm" | "centimeter" | "centimeters" | "centimetre" | "centimetres" => Token::Unit(Centimeter),
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"dm" | "decimeter" | "decimeters" | "decimetre" | "decimetres" => Token::Unit(Decimeter),
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"m" | "meter" | "meters" | "metre" | "metres" => Token::Unit(Meter),
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"km" | "kilometer" | "kilometers" | "kilometre" | "kilometres" => Token::Unit(Kilometer),
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"in" => Token::LexerKeyword(In),
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"inch" | "inches" => Token::Unit(Inch),
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"ft" | "foot" | "feet" => Token::Unit(Foot),
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"yd" | "yard" | "yards" => Token::Unit(Yard),
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"mi" | "mile" | "miles" => Token::Unit(Mile),
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"nmi" => Token::Unit(NauticalMile),
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"nautical" => {
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match read_word("", lexer).as_str() {
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"mile" | "miles" => Token::Unit(NauticalMile),
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string => return Err(format!("Invalid string: {}", string)),
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}
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},
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"ly" | "lightyear" | "lightyears" => Token::Unit(LightYear),
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"lightsec" | "lightsecs" | "lightsecond" | "lightseconds" => Token::Unit(LightSecond),
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"light" => {
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match read_word("", lexer).as_str() {
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"yr" | "yrs" | "year" | "years" => Token::Unit(LightYear),
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"sec" | "secs" | "second" | "seconds" => Token::Unit(LightSecond),
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string => return Err(format!("Invalid string: {}", string)),
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}
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}
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"sqmm" | "mm2" | "millimeter2" | "millimeters2" | "millimetre2" | "millimetres2" => Token::Unit(SquareMillimeter),
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"sqcm" | "cm2" | "centimeter2" | "centimeters2" | "centimetre2" | "centimetres2" => Token::Unit(SquareCentimeter),
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"sqdm" | "dm2" | "decimeter2" | "decimeters2" | "decimetre2" | "decimetres2" => Token::Unit(SquareDecimeter),
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"sqm" | "m2" | "meter2" | "meters2" | "metre2" | "metres2" => Token::Unit(SquareMeter),
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"sqkm" | "km2" | "kilometer2" | "kilometers2" | "kilometre2" | "kilometres2" => Token::Unit(SquareKilometer),
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"sqin" | "in2" | "inch2" | "inches2" => Token::Unit(SquareInch),
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"sqft" | "ft2" | "foot2" | "feet2" => Token::Unit(SquareFoot),
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"sqyd" | "yd2" | "yard2" | "yards2" => Token::Unit(SquareYard),
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"sqmi" | "mi2" | "mile2" | "miles2" => Token::Unit(SquareMile),
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"sq" | "square" => {
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match read_word("", lexer).as_str() {
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"mm" | "millimeter" | "millimeters" | "millimetre" | "millimetres" => Token::Unit(SquareMillimeter),
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"cm" | "centimeter" | "centimeters" | "centimetre" | "centimetres" => Token::Unit(SquareCentimeter),
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"dm" | "decimeter" | "decimeters" | "decimetre" | "decimetres" => Token::Unit(SquareDecimeter),
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"m" | "meter" | "meters" | "metre" | "metres" => Token::Unit(SquareMeter),
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"km" | "kilometer" | "kilometers" | "kilometre" | "kilometres" => Token::Unit(SquareKilometer),
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"in" | "inch" | "inches" => Token::Unit(SquareInch),
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"ft" | "foot" | "feet" => Token::Unit(SquareFoot),
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"yd" | "yard" | "yards" => Token::Unit(SquareYard),
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"mi" | "mile" | "miles" => Token::Unit(SquareMile),
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string => return Err(format!("Invalid string: {}", string)),
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}
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}
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"are" | "ares" => Token::Unit(Are),
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"decare" | "decares" => Token::Unit(Decare),
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"ha" | "hectare" | "hectares" => Token::Unit(Hectare),
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"acre" | "acres" => Token::Unit(Acre),
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"mm3" | "millimeter3" | "millimeters3" | "millimetre3" | "millimetres3" => Token::Unit(CubicMillimeter),
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"cm3" | "centimeter3" | "centimeters3" | "centimetre3" | "centimetres3" => Token::Unit(CubicCentimeter),
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"dm3" | "decimeter3" | "decimeters3" | "decimetre3" | "decimetres3" => Token::Unit(CubicDecimeter),
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"m3" | "meter3" | "meters3" | "metre3" | "metres3" => Token::Unit(CubicMeter),
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"km3" | "kilometer3" | "kilometers3" | "kilometre3" | "kilometres3" => Token::Unit(CubicKilometer),
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"inc3" | "inch3" | "inches3" => Token::Unit(CubicInch),
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"ft3" | "foot3" | "feet3" => Token::Unit(CubicFoot),
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"yd3" | "yard3" | "yards3" => Token::Unit(CubicYard),
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"mi3" | "mile3" | "miles3" => Token::Unit(CubicMile),
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"cubic" => {
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match read_word("", lexer).as_str() {
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"mm" | "millimeter" | "millimeters" | "millimetre" | "millimetres" => Token::Unit(CubicMillimeter),
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"cm" | "centimeter" | "centimeters" | "centimetre" | "centimetres" => Token::Unit(CubicCentimeter),
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"dm" | "decimeter" | "decimeters" | "decimetre" | "decimetres" => Token::Unit(CubicDecimeter),
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"m" | "meter" | "meters" | "metre" | "metres" => Token::Unit(CubicMeter),
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"km" | "kilometer" | "kilometers" | "kilometre" | "kilometres" => Token::Unit(CubicKilometer),
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"in" | "inch" | "inches" => Token::Unit(CubicInch),
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"ft" | "foot" | "feet" => Token::Unit(CubicFoot),
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"yd" | "yard" | "yards" => Token::Unit(CubicYard),
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"mi" | "mile" | "miles" => Token::Unit(CubicMile),
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string => return Err(format!("Invalid string: {}", string)),
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}
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},
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"ml" | "milliliter" | "milliliters" | "millilitre" | "millilitres" => Token::Unit(Milliliter),
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"cl" | "centiliter" | "centiliters" | "centilitre" | "centilitres" => Token::Unit(Centiliter),
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"dl" | "deciliter" | "deciliters" | "decilitre" | "decilitres" => Token::Unit(Deciliter),
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"l" | "liter" | "liters" | "litre" | "litres" => Token::Unit(Liter),
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"ts" | "tsp" | "tspn" | "tspns" | "teaspoon" | "teaspoons" => Token::Unit(Teaspoon),
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"tbs" | "tbsp" | "tablespoon" | "tablespoons" => Token::Unit(Tablespoon),
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"floz" => Token::Unit(FluidOunce),
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"fl" | "fluid" => {
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match read_word("", lexer).as_str() {
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"oz" | "ounce" | "ounces" => Token::Unit(FluidOunce),
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string => return Err(format!("Invalid string: {}", string)),
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}
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},
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"cup" | "cups" => Token::Unit(Cup),
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"pt" | "pint" | "pints" => Token::Unit(Pint),
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"qt" | "quart" | "quarts" => Token::Unit(Quart),
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"gal" | "gallon" | "gallons" => Token::Unit(Gallon),
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"bbl" => Token::Unit(OilBarrel),
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"oil" => {
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match read_word("", lexer).as_str() {
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"barrel" | "barrels" => Token::Unit(OilBarrel),
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string => return Err(format!("Invalid string: {}", string)),
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}
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},
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"metric" => {
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match read_word("", lexer).as_str() {
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"ton" | "tons" | "tonne" | "tonnes" => Token::Unit(MetricTon),
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"hp" | "hps" | "horsepower" | "horsepowers" => Token::Unit(MetricHorsepower),
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string => return Err(format!("Invalid string: {}", string)),
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}
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},
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"mg" | "milligram" | "milligrams" => Token::Unit(Milligram),
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"g" | "gram" | "grams" => Token::Unit(Gram),
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"hectogram" | "hectograms" => Token::Unit(Hectogram),
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"kg" | "kilo" | "kilos" | "kilogram" | "kilograms" => Token::Unit(Kilogram),
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"t" | "tonne" | "tonnes" => Token::Unit(MetricTon),
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"oz" | "ounces" => Token::Unit(Ounce),
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"lb" | "lbs" => Token::Unit(Pound),
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"pound" | "pounds" => {
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match lexer.chars.next() {
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Some("-") => {
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match read_word_plain(&mut lexer.chars).as_str() {
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"force" => Token::LexerKeyword(PoundForce),
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other => {
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lexer.tokens.push(Token::Unit(Pound));
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lexer.tokens.push(Token::Operator(Minus));
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parse_word_if_non_empty(&other, lexer)?;
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return Ok(());
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}
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}
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},
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Some(c) => {
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lexer.tokens.push(Token::Unit(Pound));
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parse_token(c, lexer)?;
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return Ok(());
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},
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None => {
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lexer.tokens.push(Token::Unit(Pound));
|
|
return Ok(());
|
|
},
|
|
}
|
|
},
|
|
"stone" | "stones" => Token::Unit(Stone),
|
|
"st" | "ton" | "tons" => Token::Unit(ShortTon),
|
|
"short" => {
|
|
match read_word("", lexer).as_str() {
|
|
"ton" | "tons" | "tonne" | "tonnes" => Token::Unit(ShortTon),
|
|
string => return Err(format!("Invalid string: {}", string)),
|
|
}
|
|
},
|
|
"lt" => Token::Unit(LongTon),
|
|
"long" => {
|
|
match read_word("", lexer).as_str() {
|
|
"ton" | "tons" | "tonne" | "tonnes" => Token::Unit(LongTon),
|
|
string => return Err(format!("Invalid string: {}", string)),
|
|
}
|
|
},
|
|
|
|
"bit" | "bits" => Token::Unit(Bit),
|
|
"kbit" | "kilobit" | "kilobits" => Token::Unit(Kilobit),
|
|
"mbit" | "megabit" | "megabits" => Token::Unit(Megabit),
|
|
"gbit" | "gigabit" | "gigabits" => Token::Unit(Gigabit),
|
|
"tbit" | "terabit" | "terabits" => Token::Unit(Terabit),
|
|
"pbit" | "petabit" | "petabits" => Token::Unit(Petabit),
|
|
"ebit" | "exabit" | "exabits" => Token::Unit(Exabit),
|
|
"zbit" | "zettabit" | "zettabits" => Token::Unit(Zettabit),
|
|
"ybit" | "yottabit" | "yottabits" => Token::Unit(Yottabit),
|
|
"kibit" | "kibibit" | "kibibits" => Token::Unit(Kibibit),
|
|
"mibit" | "mebibit" | "mebibits" => Token::Unit(Mebibit),
|
|
"gibit" | "gibibit" | "gibibits" => Token::Unit(Gibibit),
|
|
"tibit" | "tebibit" | "tebibits" => Token::Unit(Tebibit),
|
|
"pibit" | "pebibit" | "pebibits" => Token::Unit(Pebibit),
|
|
"eibit" | "exbibit" | "exbibits" => Token::Unit(Exbibit),
|
|
"zibit" | "zebibit" | "zebibits" => Token::Unit(Zebibit),
|
|
"yibit" | "yobibit" | "yobibits" => Token::Unit(Yobibit),
|
|
"byte" | "bytes" => Token::Unit(Byte),
|
|
"kb" | "kilobyte" | "kilobytes" => Token::Unit(Kilobyte),
|
|
"mb" | "megabyte" | "megabytes" => Token::Unit(Megabyte),
|
|
"gb" | "gigabyte" | "gigabytes" => Token::Unit(Gigabyte),
|
|
"tb" | "terabyte" | "terabytes" => Token::Unit(Terabyte),
|
|
"pb" | "petabyte" | "petabytes" => Token::Unit(Petabyte),
|
|
"eb" | "exabyte" | "exabytes" => Token::Unit(Exabyte),
|
|
"zb" | "zettabyte" | "zettabytes" => Token::Unit(Zettabyte),
|
|
"yb" | "yottabyte" | "yottabytes" => Token::Unit(Yottabyte),
|
|
"kib" | "kibibyte" | "kibibytes" => Token::Unit(Kibibyte),
|
|
"mib" | "mebibyte" | "mebibytes" => Token::Unit(Mebibyte),
|
|
"gib" | "gibibyte" | "gibibytes" => Token::Unit(Gibibyte),
|
|
"tib" | "tebibyte" | "tebibytes" => Token::Unit(Tebibyte),
|
|
"pib" | "pebibyte" | "pebibytes" => Token::Unit(Pebibyte),
|
|
"eib" | "exbibyte" | "exbibytes" => Token::Unit(Exbibyte),
|
|
"zib" | "zebibyte" | "zebibytes" => Token::Unit(Zebibyte),
|
|
"yib" | "yobibyte" | "yobibytes" => Token::Unit(Yobibyte),
|
|
|
|
"millijoule" | "millijoules" => Token::Unit(Millijoule),
|
|
"j"| "joule" | "joules" => Token::Unit(Joule),
|
|
"nm" => Token::Unit(NewtonMeter),
|
|
"newton" => {
|
|
match lexer.chars.next() {
|
|
Some("-") => {
|
|
match read_word_plain(&mut lexer.chars).as_str() {
|
|
"meter" | "meters" | "metre" | "metres" => Token::Unit(NewtonMeter),
|
|
string => return Err(format!("Invalid string: {}", string)),
|
|
}
|
|
},
|
|
Some(c) => {
|
|
match read_word(c, lexer).as_str() {
|
|
"meter" | "meters" | "metre" | "metres" => Token::Unit(NewtonMeter),
|
|
string => return Err(format!("Invalid string: {}", string)),
|
|
}
|
|
},
|
|
None => return Err(format!("Invalid string: {}", word)),
|
|
}
|
|
},
|
|
"kj" | "kilojoule" | "kilojoules" => Token::Unit(Kilojoule),
|
|
"mj" | "megajoule" | "megajoules" => Token::Unit(Megajoule),
|
|
"gj" | "gigajoule" | "gigajoules" => Token::Unit(Gigajoule),
|
|
"tj" | "terajoule" | "terajoules" => Token::Unit(Terajoule),
|
|
"cal" | "calorie" | "calories" => Token::Unit(Calorie),
|
|
"kcal" | "kilocalorie" | "kilocalories" => Token::Unit(KiloCalorie),
|
|
"btu" => Token::Unit(BritishThermalUnit),
|
|
"british" => {
|
|
match read_word("", lexer).as_str() {
|
|
"thermal" => {
|
|
match read_word("", lexer).as_str() {
|
|
"unit" | "units" => Token::Unit(BritishThermalUnit),
|
|
string => return Err(format!("Invalid string: {}", string)),
|
|
}
|
|
},
|
|
string => return Err(format!("Invalid string: {}", string)),
|
|
}
|
|
},
|
|
"wh" => Token::Unit(WattHour),
|
|
"kwh" => Token::Unit(KilowattHour),
|
|
"mwh" => Token::Unit(MegawattHour),
|
|
"gwh" => Token::Unit(GigawattHour),
|
|
"twh" => Token::Unit(TerawattHour),
|
|
"pwh" => Token::Unit(PetawattHour),
|
|
|
|
"milliwatt" | "milliwatts" => Token::Unit(Milliwatt),
|
|
"w" | "watts" => Token::Unit(Watt),
|
|
"kw" | "kilowatts" => Token::Unit(Kilowatt),
|
|
"mw" | "megawatts" => Token::Unit(Megawatt),
|
|
"gw" | "gigawatts" => Token::Unit(Gigawatt),
|
|
"tw" | "terawatts" => Token::Unit(Terawatt),
|
|
"pw" | "petawatts" => Token::Unit(Petawatt),
|
|
"hp" | "hps" | "horsepower" | "horsepowers" => Token::Unit(Horsepower),
|
|
"mhp" | "hpm" => Token::Unit(MetricHorsepower),
|
|
|
|
"watt" => {
|
|
match read_word("", lexer).as_str() {
|
|
"hr" | "hrs" | "hour" | "hours" => Token::Unit(WattHour),
|
|
other => {
|
|
lexer.tokens.push(Token::Unit(Watt));
|
|
parse_word_if_non_empty(other, lexer)?;
|
|
return Ok(());
|
|
},
|
|
}
|
|
}
|
|
"kilowatt" => {
|
|
match read_word("", lexer).as_str() {
|
|
"hr" | "hrs" | "hour" | "hours" => Token::Unit(KilowattHour),
|
|
other => {
|
|
lexer.tokens.push(Token::Unit(Kilowatt));
|
|
parse_word_if_non_empty(other, lexer)?;
|
|
return Ok(());
|
|
},
|
|
}
|
|
}
|
|
"megawatt" => {
|
|
match read_word("", lexer).as_str() {
|
|
"hr" | "hrs" | "hour" | "hours" => Token::Unit(MegawattHour),
|
|
other => {
|
|
lexer.tokens.push(Token::Unit(Megawatt));
|
|
parse_word_if_non_empty(other, lexer)?;
|
|
return Ok(());
|
|
},
|
|
}
|
|
}
|
|
"gigawatt" => {
|
|
match read_word("", lexer).as_str() {
|
|
"hr" | "hrs" | "hour" | "hours" => Token::Unit(GigawattHour),
|
|
other => {
|
|
lexer.tokens.push(Token::Unit(Gigawatt));
|
|
parse_word_if_non_empty(other, lexer)?;
|
|
return Ok(());
|
|
},
|
|
}
|
|
}
|
|
"terawatt" => {
|
|
match read_word("", lexer).as_str() {
|
|
"hr" | "hrs" | "hour" | "hours" => Token::Unit(TerawattHour),
|
|
other => {
|
|
lexer.tokens.push(Token::Unit(Terawatt));
|
|
parse_word_if_non_empty(other, lexer)?;
|
|
return Ok(());
|
|
},
|
|
}
|
|
}
|
|
"petawatt" => {
|
|
match read_word("", lexer).as_str() {
|
|
"hr" | "hrs" | "hour" | "hours" => Token::Unit(PetawattHour),
|
|
other => {
|
|
lexer.tokens.push(Token::Unit(Petawatt));
|
|
parse_word_if_non_empty(other, lexer)?;
|
|
return Ok(());
|
|
},
|
|
}
|
|
}
|
|
|
|
"ma" | "milliamp" | "milliamps" | "milliampere" | "milliamperes" => Token::Unit(Milliampere),
|
|
"a" | "amp" | "amps" | "ampere" | "amperes" => Token::Unit(Ampere),
|
|
"ka" | "kiloamp" | "kiloamps" | "kiloampere" | "kiloamperes" => Token::Unit(Kiloampere),
|
|
"bi" | "biot" | "biots" | "aba" | "abampere" | "abamperes" => Token::Unit(Abampere),
|
|
|
|
"mΩ" | "mΩ" | "milliohm" | "milliohms" => Token::Unit(Milliohm),
|
|
"Ω" | "Ω" | "ohm" | "ohms" => Token::Unit(Ohm),
|
|
"kΩ" | "kΩ" | "kiloohm" | "kiloohms" => Token::Unit(Kiloohm),
|
|
|
|
"mv" | "millivolt" | "millivolts" => Token::Unit(Millivolt),
|
|
"v" | "volt" | "volts" => Token::Unit(Volt),
|
|
"kv" | "kilovolt" | "kilovolts" => Token::Unit(Kilovolt),
|
|
|
|
// for pound-force per square inch
|
|
"lbf" => Token::LexerKeyword(PoundForce),
|
|
"force" => Token::LexerKeyword(Force),
|
|
|
|
"pa" | "pascal" | "pascals" => Token::Unit(Pascal),
|
|
"kpa" | "kilopascal" | "kilopascals" => Token::Unit(Kilopascal),
|
|
"atm" | "atms" | "atmosphere" | "atmospheres" => Token::Unit(Atmosphere),
|
|
"mbar" | "mbars" | "millibar" | "millibars" => Token::Unit(Millibar),
|
|
"bar" | "bars" => Token::Unit(Bar),
|
|
"inhg" => Token::Unit(InchOfMercury),
|
|
"mercury" => Token::LexerKeyword(Mercury),
|
|
"psi" => Token::Unit(PoundsPerSquareInch),
|
|
"torr" | "torrs" => Token::Unit(Torr),
|
|
|
|
"hz" | "hertz" => Token::Unit(Hertz),
|
|
"khz" | "kilohertz" => Token::Unit(Kilohertz),
|
|
"mhz" | "megahertz" => Token::Unit(Megahertz),
|
|
"ghz" | "gigahertz" => Token::Unit(Gigahertz),
|
|
"thz" | "terahertz" => Token::Unit(Terahertz),
|
|
"phz" | "petahertz" => Token::Unit(Petahertz),
|
|
"rpm" => Token::Unit(RevolutionsPerMinute),
|
|
"r" | "rev" | "revolution" | "revolutions" => Token::LexerKeyword(Revolution),
|
|
|
|
"kph" | "kmh" => Token::Unit(KilometersPerHour),
|
|
"mps" => Token::Unit(MetersPerSecond),
|
|
"mph" => Token::Unit(MilesPerHour),
|
|
"fps" => Token::Unit(FeetPerSecond),
|
|
"kn" | "kt" | "knot" | "knots" => Token::Unit(Knot),
|
|
|
|
"k" | "kelvin" | "kelvins" => Token::Unit(Kelvin),
|
|
"c" | "celsius" => Token::Unit(Celsius),
|
|
"f" | "fahrenheit" | "fahrenheits" => Token::Unit(Fahrenheit),
|
|
"deg" | "degree" | "degrees" => Token::Unit(lexer.default_degree),
|
|
|
|
string => {
|
|
return Err(format!("Invalid string: {}", string));
|
|
}
|
|
};
|
|
lexer.tokens.push(token);
|
|
return Ok(());
|
|
}
|
|
|
|
struct Lexer<'a> {
|
|
left_paren_count: u16,
|
|
right_paren_count: u16,
|
|
chars: Peekable<Graphemes<'a>>,
|
|
tokens: Vec<Token>,
|
|
default_degree: Unit,
|
|
}
|
|
|
|
/// Lex an input string and returns [`Token`]s
|
|
pub fn lex(input: &str, remove_trailing_operator: bool, default_degree: Unit) -> Result<Vec<Token>, String> {
|
|
let mut input = input.replace(",", "").to_ascii_lowercase();
|
|
|
|
if remove_trailing_operator {
|
|
match &input.chars().last().unwrap_or('x') {
|
|
'+' | '-' | '*' | '/' | '^' | '(' => {
|
|
input.pop();
|
|
},
|
|
_ => {},
|
|
}
|
|
}
|
|
|
|
let mut lexer = Lexer {
|
|
left_paren_count: 0,
|
|
right_paren_count: 0,
|
|
chars: UnicodeSegmentation::graphemes(input.as_str(), true).peekable(),
|
|
tokens: Vec::new(),
|
|
default_degree,
|
|
};
|
|
|
|
while let Some(c) = lexer.chars.next() {
|
|
parse_token(c, &mut lexer)?;
|
|
}
|
|
let tokens = &mut lexer.tokens;
|
|
// auto insert missing parentheses in first and last position
|
|
if lexer.left_paren_count > lexer.right_paren_count {
|
|
let missing_right_parens = lexer.left_paren_count - lexer.right_paren_count;
|
|
for _ in 0..missing_right_parens {
|
|
tokens.push(Token::Operator(RightParen));
|
|
}
|
|
} else if lexer.left_paren_count < lexer.right_paren_count {
|
|
let missing_left_parens = lexer.right_paren_count - lexer.left_paren_count;
|
|
for _ in 0..missing_left_parens {
|
|
tokens.insert(0, Token::Operator(LeftParen));
|
|
}
|
|
}
|
|
|
|
if tokens.len() == 0 {
|
|
return Err(format!("Input was empty"))
|
|
}
|
|
|
|
let mut token_index = 0;
|
|
loop {
|
|
match tokens[token_index] {
|
|
// decide if % is percent or modulo
|
|
Token::LexerKeyword(PercentChar) => {
|
|
match tokens.get(token_index + 1) {
|
|
Some(Token::TextOperator(Of)) => {
|
|
// "10% of 1km" should be percentage
|
|
tokens[token_index] = Token::UnaryOperator(Percent);
|
|
},
|
|
Some(Token::Operator(operator)) => {
|
|
match operator {
|
|
LeftParen => {
|
|
// "10%(2)" should be modulo
|
|
tokens[token_index] = Token::Operator(Modulo);
|
|
},
|
|
_ => {
|
|
// "10%*2" should be a percentage
|
|
tokens[token_index] = Token::UnaryOperator(Percent);
|
|
}
|
|
}
|
|
},
|
|
Some(Token::UnaryOperator(_)) => {
|
|
// "10%!" should be a percentage
|
|
tokens[token_index] = Token::UnaryOperator(Percent);
|
|
},
|
|
Some(Token::LexerKeyword(PercentChar)) => {
|
|
// "10%%" should be a percentage
|
|
tokens[token_index] = Token::UnaryOperator(Percent);
|
|
},
|
|
None => {
|
|
// percent if there's no element afterwards
|
|
tokens[token_index] = Token::UnaryOperator(Percent);
|
|
},
|
|
_ => {
|
|
// everything else should be modulo, for example if the % is
|
|
// before a number, function or constants
|
|
tokens[token_index] = Token::Operator(Modulo);
|
|
},
|
|
}
|
|
},
|
|
// decide if " is 'inch' or 'inch of mercury'
|
|
Token::LexerKeyword(DoubleQuotes) => {
|
|
match tokens.get(token_index + 1) {
|
|
Some(Token::LexerKeyword(Hg)) => {
|
|
// "hg should be inch of mercury
|
|
tokens[token_index] = Token::Unit(InchOfMercury);
|
|
tokens.remove(token_index + 1);
|
|
},
|
|
_ => {
|
|
// otherwise, Inch
|
|
tokens[token_index] = Token::Unit(Inch);
|
|
},
|
|
}
|
|
},
|
|
// if hg wasn't already turned into inch of mercury, it's hectogram
|
|
Token::LexerKeyword(Hg) => {
|
|
tokens[token_index] = Token::Unit(Hectogram);
|
|
},
|
|
// decide if "in" is Inch or To
|
|
Token::LexerKeyword(In) => {
|
|
match tokens.get(token_index + 1) {
|
|
Some(Token::Unit(_)) => {
|
|
// "in" should be To
|
|
tokens[token_index] = Token::TextOperator(To);
|
|
},
|
|
_ => {
|
|
// otherwise, Inch
|
|
tokens[token_index] = Token::Unit(Inch);
|
|
},
|
|
}
|
|
},
|
|
_ => {},
|
|
}
|
|
// parse units like km/h, lbf per square inch
|
|
if token_index >= 2 {
|
|
let token1 = &tokens[token_index-2];
|
|
let token2 = match &tokens[token_index-1] {
|
|
// treat km/h the same as km per h
|
|
Token::Operator(Divide) => &Token::LexerKeyword(Per),
|
|
_ => &tokens[token_index-1],
|
|
};
|
|
let token3 = &tokens[token_index];
|
|
let mut replaced = true;
|
|
match (token1, token2, token3) {
|
|
// km/h
|
|
(Token::Unit(Kilometer), Token::LexerKeyword(Per), Token::Unit(Hour)) => {
|
|
tokens[token_index-2] = Token::Unit(KilometersPerHour);
|
|
},
|
|
// mi/h
|
|
(Token::Unit(Mile), Token::LexerKeyword(Per), Token::Unit(Hour)) => {
|
|
tokens[token_index-2] = Token::Unit(MilesPerHour);
|
|
},
|
|
// m/s
|
|
(Token::Unit(Meter), Token::LexerKeyword(Per), Token::Unit(Second)) => {
|
|
tokens[token_index-2] = Token::Unit(MetersPerSecond);
|
|
},
|
|
// ft/s
|
|
(Token::Unit(Foot), Token::LexerKeyword(Per), Token::Unit(Second)) => {
|
|
tokens[token_index-2] = Token::Unit(FeetPerSecond);
|
|
},
|
|
// btu/min
|
|
(Token::Unit(BritishThermalUnit), Token::LexerKeyword(Per), Token::Unit(Minute)) => {
|
|
tokens[token_index-2] = Token::Unit(BritishThermalUnitsPerMinute);
|
|
},
|
|
// btu/h
|
|
(Token::Unit(BritishThermalUnit), Token::LexerKeyword(Per), Token::Unit(Hour)) => {
|
|
tokens[token_index-2] = Token::Unit(BritishThermalUnitsPerHour);
|
|
},
|
|
// lbs/sqin
|
|
(Token::LexerKeyword(PoundForce), Token::LexerKeyword(Per), Token::Unit(SquareInch)) => {
|
|
tokens[token_index-2] = Token::Unit(PoundsPerSquareInch);
|
|
},
|
|
// inch of mercury
|
|
(Token::Unit(Inch), Token::TextOperator(Of), Token::LexerKeyword(Mercury)) => {
|
|
tokens[token_index-2] = Token::Unit(InchOfMercury);
|
|
},
|
|
// revolutions per minute
|
|
(Token::LexerKeyword(Revolution), Token::LexerKeyword(Per), Token::Unit(Minute)) => {
|
|
tokens[token_index-2] = Token::Unit(RevolutionsPerMinute);
|
|
},
|
|
_ => {
|
|
replaced = false;
|
|
},
|
|
}
|
|
if replaced {
|
|
tokens.remove(token_index);
|
|
tokens.remove(token_index-1);
|
|
token_index -= 2;
|
|
}
|
|
}
|
|
if token_index == tokens.len()-1 {
|
|
break;
|
|
} else {
|
|
token_index += 1;
|
|
}
|
|
}
|
|
|
|
Ok(lexer.tokens)
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use crate::numtok;
|
|
use regex::Regex;
|
|
|
|
#[test]
|
|
fn test_lex() {
|
|
let strip_operator_spacing = Regex::new(r" ([+\-*/]) ").unwrap();
|
|
let strip_afterdigit_spacing = Regex::new(r"(\d) ").unwrap();
|
|
|
|
let run_lex = |input: &str, expected_tokens: Vec<Token>| {
|
|
let tokens = match lex(input, false, Unit::Celsius) {
|
|
Ok(tokens) => tokens,
|
|
Err(e) => {
|
|
panic!("lex error: {}\nrun_lex input: {}", e, input);
|
|
}
|
|
};
|
|
let info_msg = format!("run_lex input: {}\nexpected: {:?}\nreceived: {:?}", input, expected_tokens, tokens);
|
|
assert!(tokens == expected_tokens, "{}", info_msg);
|
|
|
|
// Prove we can handle multiple spaces wherever we handle a single space
|
|
let input_extra_spaces = input.replace(" ", " ");
|
|
let tokens_extra_spaces = lex(&input_extra_spaces, false, Unit::Celsius).unwrap();
|
|
assert!(tokens_extra_spaces == expected_tokens, "{}", info_msg);
|
|
|
|
// Prove we don't need spaces around operators
|
|
let input_stripped_spaces = strip_operator_spacing.replace_all(input, "$1");
|
|
let tokens_stripped_spaces = lex(&input_stripped_spaces, false, Unit::Celsius).unwrap();
|
|
assert!(tokens_stripped_spaces == expected_tokens, "{}", info_msg);
|
|
|
|
// Prove we don't need a space after a digit
|
|
let input_afterdigit_stripped_spaces = strip_afterdigit_spacing.replace_all(input, "$1");
|
|
let tokens_afterdigit_stripped_spaces = lex(&input_afterdigit_stripped_spaces, false, Unit::Celsius).unwrap();
|
|
assert!(tokens_afterdigit_stripped_spaces == expected_tokens, "{}", info_msg);
|
|
};
|
|
|
|
run_lex("88 kilometres * 2", vec![numtok!(88), Token::Unit(Kilometer), Token::Operator(Multiply), numtok!(2)]);
|
|
run_lex("100 nmi", vec![numtok!(100), Token::Unit(NauticalMile)]);
|
|
run_lex("101 nautical miles", vec![numtok!(101), Token::Unit(NauticalMile)]);
|
|
run_lex("2 lightyears", vec![numtok!(2), Token::Unit(LightYear)]);
|
|
run_lex("1 light year", vec![numtok!(1), Token::Unit(LightYear)]);
|
|
run_lex("10 lightsec", vec![numtok!(10), Token::Unit(LightSecond)]);
|
|
run_lex("12 light secs", vec![numtok!(12), Token::Unit(LightSecond)]);
|
|
run_lex("33.3 square meters", vec![numtok!(33.3), Token::Unit(SquareMeter)]);
|
|
run_lex("54 m2", vec![numtok!(54), Token::Unit(SquareMeter)]);
|
|
run_lex("87 sq miles", vec![numtok!(87), Token::Unit(SquareMile)]);
|
|
run_lex("500 feet2", vec![numtok!(500), Token::Unit(SquareFoot)]);
|
|
run_lex("500 feet²", vec![numtok!(500), Token::Unit(SquareFoot)]);
|
|
run_lex("4 cubic metres", vec![numtok!(4), Token::Unit(CubicMeter)]);
|
|
run_lex("34 cubic feet + 23 cubic yards", vec![numtok!(34), Token::Unit(CubicFoot), Token::Operator(Plus), numtok!(23), Token::Unit(CubicYard)]);
|
|
run_lex("66 inches3 + 65 millimetre³", vec![numtok!(66), Token::Unit(CubicInch), Token::Operator(Plus), numtok!(65), Token::Unit(CubicMillimeter)]);
|
|
run_lex("66 inches³ + 65 millimetre3", vec![numtok!(66), Token::Unit(CubicInch), Token::Operator(Plus), numtok!(65), Token::Unit(CubicMillimeter)]);
|
|
run_lex("42 millilitres", vec![numtok!(42), Token::Unit(Milliliter)]);
|
|
run_lex("3 tbs", vec![numtok!(3), Token::Unit(Tablespoon)]);
|
|
run_lex("6 floz", vec![numtok!(6), Token::Unit(FluidOunce)]);
|
|
run_lex("6 fl oz", vec![numtok!(6), Token::Unit(FluidOunce)]);
|
|
run_lex("6 fluid ounces", vec![numtok!(6), Token::Unit(FluidOunce)]);
|
|
run_lex("3 oil barrels", vec![numtok!(3), Token::Unit(OilBarrel)]);
|
|
run_lex("67 kg", vec![numtok!(67), Token::Unit(Kilogram)]);
|
|
run_lex("34 oz", vec![numtok!(34), Token::Unit(Ounce)]);
|
|
run_lex("34 ounces", vec![numtok!(34), Token::Unit(Ounce)]);
|
|
run_lex("210 lb", vec![numtok!(210), Token::Unit(Pound)]);
|
|
run_lex("210 lbs", vec![numtok!(210), Token::Unit(Pound)]);
|
|
run_lex("210 pound", vec![numtok!(210), Token::Unit(Pound)]);
|
|
run_lex("210 pounds", vec![numtok!(210), Token::Unit(Pound)]);
|
|
run_lex("210 pounds-force", vec![numtok!(210), Token::LexerKeyword(PoundForce)]);
|
|
run_lex("3 ton", vec![numtok!(3), Token::Unit(ShortTon)]);
|
|
run_lex("3 short tons", vec![numtok!(3), Token::Unit(ShortTon)]);
|
|
run_lex("4 lt", vec![numtok!(4), Token::Unit(LongTon)]);
|
|
run_lex("4 long tonnes", vec![numtok!(4), Token::Unit(LongTon)]);
|
|
run_lex("234 wh", vec![numtok!(234), Token::Unit(WattHour)]);
|
|
run_lex("1 w", vec![numtok!(1), Token::Unit(Watt)]);
|
|
run_lex("1 watt", vec![numtok!(1), Token::Unit(Watt)]);
|
|
run_lex("1 watts", vec![numtok!(1), Token::Unit(Watt)]);
|
|
run_lex("1 watt hour", vec![numtok!(1), Token::Unit(WattHour)]);
|
|
run_lex("0 watt + 1 watts", vec![numtok!(0), Token::Unit(Watt), Token::Operator(Plus), numtok!(1), Token::Unit(Watt)]);
|
|
run_lex("0 watt * 1", vec![numtok!(0), Token::Unit(Watt), Token::Operator(Multiply), numtok!(1)]);
|
|
run_lex("2 watts + 3 watts", vec![numtok!(2), Token::Unit(Watt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 watts * 3", vec![numtok!(2), Token::Unit(Watt), Token::Operator(Multiply), numtok!(3)]);
|
|
run_lex("4 watt plus 5 watts", vec![numtok!(4), Token::Unit(Watt), Token::Operator(Plus), numtok!(5), Token::Unit(Watt)]);
|
|
run_lex("4 watt times 5", vec![numtok!(4), Token::Unit(Watt), Token::Operator(Multiply), numtok!(5)]);
|
|
run_lex("6 watts plus 7 watts", vec![numtok!(6), Token::Unit(Watt), Token::Operator(Plus), numtok!(7), Token::Unit(Watt)]);
|
|
run_lex("6 watts times 7", vec![numtok!(6), Token::Unit(Watt), Token::Operator(Multiply), numtok!(7)]);
|
|
run_lex("2.3 kwh", vec![numtok!(2.3), Token::Unit(KilowattHour)]);
|
|
run_lex("1 kw", vec![numtok!(1), Token::Unit(Kilowatt)]);
|
|
run_lex("1 kilowatt", vec![numtok!(1), Token::Unit(Kilowatt)]);
|
|
run_lex("1 kilowatts", vec![numtok!(1), Token::Unit(Kilowatt)]);
|
|
run_lex("1 kilowatt hour", vec![numtok!(1), Token::Unit(KilowattHour)]);
|
|
run_lex("2 kilowatt + 3 watt", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 kilowatt * 4", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Multiply), numtok!(4)]);
|
|
run_lex("2 kilowatt times 4", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Multiply), numtok!(4)]);
|
|
run_lex("2 kilowatt + 3 watts", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 kilowatts + 3 watt", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 kilowatts + 3 watts", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 kilowatt plus 3 watt", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 kilowatt plus 3 watts", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 kilowatts plus 3 watt", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 kilowatts plus 3 watts", vec![numtok!(2), Token::Unit(Kilowatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("6.6 watts + 4 kilowatts", vec![numtok!(6.6), Token::Unit(Watt), Token::Operator(Plus), numtok!(4), Token::Unit(Kilowatt)]);
|
|
run_lex("6.6 watts plus 4 kilowatts", vec![numtok!(6.6), Token::Unit(Watt), Token::Operator(Plus), numtok!(4), Token::Unit(Kilowatt)]);
|
|
run_lex("2.3 mwh", vec![numtok!(2.3), Token::Unit(MegawattHour)]);
|
|
run_lex("1 mw", vec![numtok!(1), Token::Unit(Megawatt)]);
|
|
run_lex("1 megawatt", vec![numtok!(1), Token::Unit(Megawatt)]);
|
|
run_lex("1 megawatt hour", vec![numtok!(1), Token::Unit(MegawattHour)]);
|
|
run_lex("2 megawatt + 3 watt", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 megawatt * 6", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Multiply), numtok!(6)]);
|
|
run_lex("2 megawatt times 6", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Multiply), numtok!(6)]);
|
|
run_lex("2 megawatt + 3 watts", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 megawatts + 3 watt", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 megawatts + 3 watts", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 megawatt plus 3 watt", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 megawatt plus 3 watts", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 megawatts plus 3 watt", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("2 megawatts plus 3 watts", vec![numtok!(2), Token::Unit(Megawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Watt)]);
|
|
run_lex("6.6 watts + 4 megawatts", vec![numtok!(6.6), Token::Unit(Watt), Token::Operator(Plus), numtok!(4), Token::Unit(Megawatt)]);
|
|
run_lex("6.6 watts plus 4 megawatts", vec![numtok!(6.6), Token::Unit(Watt), Token::Operator(Plus), numtok!(4), Token::Unit(Megawatt)]);
|
|
run_lex("234 gwh", vec![numtok!(234), Token::Unit(GigawattHour)]);
|
|
run_lex("1 gw", vec![numtok!(1), Token::Unit(Gigawatt)]);
|
|
run_lex("1 gigawatt", vec![numtok!(1), Token::Unit(Gigawatt)]);
|
|
run_lex("1 gigawatts", vec![numtok!(1), Token::Unit(Gigawatt)]);
|
|
run_lex("1 gigawatt hour", vec![numtok!(1), Token::Unit(GigawattHour)]);
|
|
run_lex("0 gigawatt + 1 gigawatts", vec![numtok!(0), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(1), Token::Unit(Gigawatt)]);
|
|
run_lex("0 gigawatt * 1", vec![numtok!(0), Token::Unit(Gigawatt), Token::Operator(Multiply), numtok!(1)]);
|
|
run_lex("2 gigawatts + 3 gigawatts", vec![numtok!(2), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(3), Token::Unit(Gigawatt)]);
|
|
run_lex("2 gigawatts * 3", vec![numtok!(2), Token::Unit(Gigawatt), Token::Operator(Multiply), numtok!(3)]);
|
|
run_lex("4 gigawatt plus 5 watt", vec![numtok!(4), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(5), Token::Unit(Watt)]);
|
|
run_lex("4 gigawatt plus 5 megawatt", vec![numtok!(4), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(5), Token::Unit(Megawatt)]);
|
|
run_lex("4 gigawatt plus 5 gigawatt", vec![numtok!(4), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(5), Token::Unit(Gigawatt)]);
|
|
run_lex("4 gigawatt plus 5 watts", vec![numtok!(4), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(5), Token::Unit(Watt)]);
|
|
run_lex("4 gigawatt plus 5 megawatts", vec![numtok!(4), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(5), Token::Unit(Megawatt)]);
|
|
run_lex("4 gigawatt plus 5 gigawatts", vec![numtok!(4), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(5), Token::Unit(Gigawatt)]);
|
|
run_lex("4 gigawatt times 5", vec![numtok!(4), Token::Unit(Gigawatt), Token::Operator(Multiply), numtok!(5)]);
|
|
run_lex("6 gigawatts plus 7 watt", vec![numtok!(6), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(7), Token::Unit(Watt)]);
|
|
run_lex("6 gigawatts plus 7 megawatt", vec![numtok!(6), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(7), Token::Unit(Megawatt)]);
|
|
run_lex("6 gigawatts plus 7 gigawatt", vec![numtok!(6), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(7), Token::Unit(Gigawatt)]);
|
|
run_lex("6 gigawatts plus 7 watts", vec![numtok!(6), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(7), Token::Unit(Watt)]);
|
|
run_lex("6 gigawatts plus 7 megawatts", vec![numtok!(6), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(7), Token::Unit(Megawatt)]);
|
|
run_lex("6 gigawatts plus 7 gigawatts", vec![numtok!(6), Token::Unit(Gigawatt), Token::Operator(Plus), numtok!(7), Token::Unit(Gigawatt)]);
|
|
run_lex("6 gigawatts times 7", vec![numtok!(6), Token::Unit(Gigawatt), Token::Operator(Multiply), numtok!(7)]);
|
|
run_lex("88 mw * 3", vec![numtok!(88), Token::Unit(Megawatt), Token::Operator(Multiply), numtok!(3)]);
|
|
run_lex("88 mw times 3", vec![numtok!(88), Token::Unit(Megawatt), Token::Operator(Multiply), numtok!(3)]);
|
|
run_lex("999 kb", vec![numtok!(999), Token::Unit(Kilobyte)]);
|
|
run_lex("200 gb - 100 mb", vec![numtok!(200), Token::Unit(Gigabyte), Token::Operator(Minus), numtok!(100), Token::Unit(Megabyte)]);
|
|
run_lex("999 kib", vec![numtok!(999), Token::Unit(Kibibyte)]);
|
|
run_lex("200 gib - 100 mib", vec![numtok!(200), Token::Unit(Gibibyte), Token::Operator(Minus), numtok!(100), Token::Unit(Mebibyte)]);
|
|
run_lex("45 btu", vec![numtok!(45), Token::Unit(BritishThermalUnit)]);
|
|
run_lex("45.5 british thermal unit", vec![numtok!(45.5), Token::Unit(BritishThermalUnit)]);
|
|
run_lex("46 british thermal units", vec![numtok!(46), Token::Unit(BritishThermalUnit)]);
|
|
run_lex("5432 newton metres", vec![numtok!(5432), Token::Unit(NewtonMeter)]);
|
|
run_lex("2345 newton-meters", vec![numtok!(2345), Token::Unit(NewtonMeter)]);
|
|
run_lex("20 lbf", vec![numtok!(20), Token::LexerKeyword(PoundForce)]);
|
|
run_lex("60 hz", vec![numtok!(60), Token::Unit(Hertz)]);
|
|
run_lex("1100 rpm", vec![numtok!(1100), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1150 revolutions per minute", vec![numtok!(1150), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1 revolution per min", vec![numtok!(1), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("4 revolution / mins", vec![numtok!(4), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1250 r / min", vec![numtok!(1250), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1300 rev / min", vec![numtok!(1300), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1350 rev / minute", vec![numtok!(1350), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1250 r per min", vec![numtok!(1250), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1300 rev per min", vec![numtok!(1300), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("1350 rev per minute", vec![numtok!(1350), Token::Unit(RevolutionsPerMinute)]);
|
|
run_lex("100 kph", vec![numtok!(100), Token::Unit(KilometersPerHour)]);
|
|
run_lex("100 kmh", vec![numtok!(100), Token::Unit(KilometersPerHour)]);
|
|
run_lex("100 kilometers per hour", vec![numtok!(100), Token::Unit(KilometersPerHour)]);
|
|
run_lex("100 kilometre / hrs", vec![numtok!(100), Token::Unit(KilometersPerHour)]);
|
|
run_lex("3.6 mps", vec![numtok!(3.6), Token::Unit(MetersPerSecond)]);
|
|
run_lex("3.6 meters per second", vec![numtok!(3.6), Token::Unit(MetersPerSecond)]);
|
|
run_lex("3.6 metre / secs", vec![numtok!(3.6), Token::Unit(MetersPerSecond)]);
|
|
run_lex("60 mph", vec![numtok!(60), Token::Unit(MilesPerHour)]);
|
|
run_lex("60 miles per hour", vec![numtok!(60), Token::Unit(MilesPerHour)]);
|
|
run_lex("60 mile / hr", vec![numtok!(60), Token::Unit(MilesPerHour)]);
|
|
run_lex("35 fps", vec![numtok!(35), Token::Unit(FeetPerSecond)]);
|
|
run_lex("35 ft / sec", vec![numtok!(35), Token::Unit(FeetPerSecond)]);
|
|
run_lex("35 ft per seconds", vec![numtok!(35), Token::Unit(FeetPerSecond)]);
|
|
run_lex("35 foot / secs", vec![numtok!(35), Token::Unit(FeetPerSecond)]);
|
|
run_lex("35 foot per seconds", vec![numtok!(35), Token::Unit(FeetPerSecond)]);
|
|
run_lex("35 feet / sec", vec![numtok!(35), Token::Unit(FeetPerSecond)]);
|
|
run_lex("35 feet per second", vec![numtok!(35), Token::Unit(FeetPerSecond)]);
|
|
run_lex("30 pa", vec![numtok!(30), Token::Unit(Pascal)]);
|
|
run_lex("23 celsius + 4 celsius", vec![numtok!(23), Token::Unit(Celsius), Token::Operator(Plus), numtok!(4), Token::Unit(Celsius)]);
|
|
run_lex("54 f - 1.5 fahrenheit", vec![numtok!(54), Token::Unit(Fahrenheit), Token::Operator(Minus), numtok!(1.5), Token::Unit(Fahrenheit)]);
|
|
run_lex("50 metric tonnes", vec![numtok!(50), Token::Unit(MetricTon)]);
|
|
run_lex("77 metric hps", vec![numtok!(77), Token::Unit(MetricHorsepower)]);
|
|
|
|
run_lex("100 + 99", vec![numtok!(100), Token::Operator(Plus), numtok!(99)]);
|
|
run_lex("100 plus 99", vec![numtok!(100), Token::Operator(Plus), numtok!(99)]);
|
|
run_lex("12 - 4", vec![numtok!(12), Token::Operator(Minus), numtok!(4)]);
|
|
run_lex("12 minus 4", vec![numtok!(12), Token::Operator(Minus), numtok!(4)]);
|
|
run_lex("50.5 * 2", vec![numtok!(50.5), Token::Operator(Multiply), numtok!(2)]);
|
|
run_lex("50.5 times 2", vec![numtok!(50.5), Token::Operator(Multiply), numtok!(2)]);
|
|
run_lex("50.5 multiplied by 2", vec![numtok!(50.5), Token::Operator(Multiply), numtok!(2)]);
|
|
run_lex("6 / 3", vec![numtok!(6), Token::Operator(Divide), numtok!(3)]);
|
|
run_lex("50 / 10", vec![numtok!(50), Token::Operator(Divide), numtok!(10)]);
|
|
run_lex("52 ÷ 12", vec![numtok!(52), Token::Operator(Divide), numtok!(12)]);
|
|
run_lex("6 divided by 3", vec![numtok!(6), Token::Operator(Divide), numtok!(3)]);
|
|
run_lex("7 mod 5", vec![numtok!(7), Token::Operator(Modulo), numtok!(5)]);
|
|
|
|
run_lex("(2 + 3) * 4", vec![Token::Operator(LeftParen), numtok!(2), Token::Operator(Plus), numtok!(3), Token::Operator(RightParen), Token::Operator(Multiply), numtok!(4)]);
|
|
run_lex("52 weeks * (12 hrs + 12 hours)", vec![numtok!(52), Token::Unit(Week), Token::Operator(Multiply), Token::Operator(LeftParen), numtok!(12), Token::Unit(Hour), Token::Operator(Plus), numtok!(12), Token::Unit(Hour), Token::Operator(RightParen)]);
|
|
run_lex("12 pound+", vec![numtok!(12), Token::Unit(Pound), Token::Operator(Plus)]);
|
|
|
|
run_lex("5 π m", vec![numtok!(5), Token::Constant(Pi), Token::Unit(Meter)]);
|
|
run_lex("5 Ω + 2 mΩ", vec![numtok!(5), Token::Unit(Ohm), Token::Operator(Plus), numtok!(2), Token::Unit(Milliohm)]);
|
|
}
|
|
}
|