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rustfmt

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This commit is contained in:
Simon Gardling
2022-02-17 10:50:53 -05:00
parent 95b57f711c
commit 0154ff3933
2 changed files with 34 additions and 22 deletions
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31
src/misc.rs
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@@ -2,12 +2,14 @@ use wasm_bindgen::prelude::*;
pub type DrawResult<T> = Result<T, Box<dyn std::error::Error>>;
// EXTREMELY Janky function that tries to put asterisks in the proper places to be parsed. This is so cursed. But it works, and I hopefully won't ever have to touch it again.
// EXTREMELY Janky function that tries to put asterisks in the proper places to be parsed. This is so cursed. But it works, and I hopefully won't ever have to touch it again.
// One limitation though, variables with multiple characters like `pi` cannot be multiplied (like `pipipipi` won't result in `pi*pi*pi*pi`). But that's such a niche use case (and that same thing could be done by using exponents) that it doesn't really matter.
pub fn add_asterisks(function_in: String) -> String {
let function = function_in.replace("log10(", "log("); // replace log10 with log
let valid_variables: Vec<char> = "xe".chars().collect();
let letters: Vec<char>= "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".chars().collect();
let letters: Vec<char> = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
.chars()
.collect();
let numbers: Vec<char> = "0123456789".chars().collect();
let function_chars: Vec<char> = function.chars().collect();
let func_chars_len = function_chars.len();
@@ -16,27 +18,27 @@ pub fn add_asterisks(function_in: String) -> String {
for c in function_chars.clone() {
let mut add_asterisk: bool = false;
let prev_chars_len = prev_chars.len();
let curr_i: usize = func_chars_len-prev_chars_len;
let curr_i: usize = func_chars_len - prev_chars_len;
let prev_prev_char = if prev_chars_len >= 2 {
match prev_chars.get(prev_chars_len-2) {
match prev_chars.get(prev_chars_len - 2) {
Some(x) => *x,
None => panic!()
None => panic!(),
}
} else {
' '
};
let prev_char = if prev_chars_len >= 1 {
match prev_chars.get(prev_chars_len-1) {
match prev_chars.get(prev_chars_len - 1) {
Some(x) => *x,
None => panic!()
None => panic!(),
}
} else {
' '
};
let for_char = match function_chars.get(curr_i) {
let for_char = match function_chars.get(curr_i) {
Some(x) => *x,
None => ' ',
};
@@ -44,13 +46,16 @@ pub fn add_asterisks(function_in: String) -> String {
let prev_pi = (prev_prev_char == 'p') && (prev_char == 'i');
let for_pi = (for_char == 'i') && (c == 'p');
if prev_char == ')' {
if (c == '(') | numbers.contains(&c) | letters.contains(&c) {
add_asterisk = true;
}
} else if c == '(' {
if (valid_variables.contains(&prev_char) | (prev_char == ')') | numbers.contains(&prev_char)) && !letters.contains(&prev_prev_char) {
if (valid_variables.contains(&prev_char)
| (prev_char == ')')
| numbers.contains(&prev_char))
&& !letters.contains(&prev_prev_char)
{
add_asterisk = true;
} else if prev_pi {
add_asterisk = true;
@@ -62,7 +67,9 @@ pub fn add_asterisks(function_in: String) -> String {
} else if letters.contains(&c) {
if numbers.contains(&prev_char) {
add_asterisk = true;
} else if (valid_variables.contains(&prev_char) && valid_variables.contains(&c)) | prev_pi {
} else if (valid_variables.contains(&prev_char) && valid_variables.contains(&c))
| prev_pi
{
add_asterisk = true;
}
} else if numbers.contains(&c) {
@@ -184,4 +191,4 @@ fn asterisk_test() {
assert_eq!(&add_asterisks("2e".to_string()), "2*e");
assert_eq!(&add_asterisks("2log10(x)".to_string()), "2*log(x)");
assert_eq!(&add_asterisks("2log(x)".to_string()), "2*log(x)");
}
}