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-rw-r--r--helix-core/src/increment/date.rs474
-rw-r--r--helix-core/src/increment/mod.rs8
-rw-r--r--helix-core/src/increment/number.rs507
3 files changed, 989 insertions, 0 deletions
diff --git a/helix-core/src/increment/date.rs b/helix-core/src/increment/date.rs
new file mode 100644
index 00000000..05442990
--- /dev/null
+++ b/helix-core/src/increment/date.rs
@@ -0,0 +1,474 @@
+use regex::Regex;
+
+use std::borrow::Cow;
+use std::cmp;
+
+use ropey::RopeSlice;
+
+use crate::{Range, Tendril};
+
+use chrono::{Datelike, Duration, NaiveDate};
+
+use super::Increment;
+
+fn ndays_in_month(year: i32, month: u32) -> u32 {
+ // The first day of the next month...
+ let (y, m) = if month == 12 {
+ (year + 1, 1)
+ } else {
+ (year, month + 1)
+ };
+ let d = NaiveDate::from_ymd(y, m, 1);
+
+ // ...is preceded by the last day of the original month.
+ d.pred().day()
+}
+
+fn add_days(date: NaiveDate, amount: i64) -> Option<NaiveDate> {
+ date.checked_add_signed(Duration::days(amount))
+}
+
+fn add_months(date: NaiveDate, amount: i64) -> Option<NaiveDate> {
+ let month = date.month0() as i64 + amount;
+ let year = date.year() + i32::try_from(month / 12).ok()?;
+ let year = if month.is_negative() { year - 1 } else { year };
+
+ // Normalize month
+ let month = month % 12;
+ let month = if month.is_negative() {
+ month + 13
+ } else {
+ month + 1
+ } as u32;
+
+ let day = cmp::min(date.day(), ndays_in_month(year, month));
+
+ Some(NaiveDate::from_ymd(year, month, day))
+}
+
+fn add_years(date: NaiveDate, amount: i64) -> Option<NaiveDate> {
+ let year = i32::try_from(date.year() as i64 + amount).ok()?;
+ let ndays = ndays_in_month(year, date.month());
+
+ if date.day() > ndays {
+ let d = NaiveDate::from_ymd(year, date.month(), ndays);
+ Some(d.succ())
+ } else {
+ date.with_year(year)
+ }
+}
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+struct Format {
+ regex: &'static str,
+ separator: char,
+}
+
+// Only support formats that aren't region specific.
+static FORMATS: &[Format] = &[
+ Format {
+ regex: r"(\d{4})-(\d{2})-(\d{2})",
+ separator: '-',
+ },
+ Format {
+ regex: r"(\d{4})/(\d{2})/(\d{2})",
+ separator: '/',
+ },
+];
+
+const DATE_LENGTH: usize = 10;
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+enum DateField {
+ Year,
+ Month,
+ Day,
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct DateIncrementor {
+ date: NaiveDate,
+ range: Range,
+ field: DateField,
+ format: Format,
+}
+
+impl DateIncrementor {
+ pub fn from_range(text: RopeSlice, range: Range) -> Option<DateIncrementor> {
+ let range = if range.is_empty() {
+ if range.anchor < text.len_bytes() {
+ // Treat empty range as a cursor range.
+ range.put_cursor(text, range.anchor + 1, true)
+ } else {
+ // The range is empty and at the end of the text.
+ return None;
+ }
+ } else {
+ range
+ };
+
+ let from = range.from().saturating_sub(DATE_LENGTH);
+ let to = (range.from() + DATE_LENGTH).min(text.len_chars());
+
+ let (from_in_text, to_in_text) = (range.from() - from, range.to() - from);
+ let text: Cow<str> = text.slice(from..to).into();
+
+ FORMATS.iter().find_map(|&format| {
+ let re = Regex::new(format.regex).ok()?;
+ let captures = re.captures(&text)?;
+
+ let date = captures.get(0)?;
+ let offset = range.from() - from_in_text;
+ let range = Range::new(date.start() + offset, date.end() + offset);
+
+ let (year, month, day) = (captures.get(1)?, captures.get(2)?, captures.get(3)?);
+ let (year_range, month_range, day_range) = (year.range(), month.range(), day.range());
+
+ let field = if year_range.contains(&from_in_text)
+ && year_range.contains(&(to_in_text - 1))
+ {
+ DateField::Year
+ } else if month_range.contains(&from_in_text) && month_range.contains(&(to_in_text - 1))
+ {
+ DateField::Month
+ } else if day_range.contains(&from_in_text) && day_range.contains(&(to_in_text - 1)) {
+ DateField::Day
+ } else {
+ return None;
+ };
+
+ let date = NaiveDate::from_ymd_opt(
+ year.as_str().parse::<i32>().ok()?,
+ month.as_str().parse::<u32>().ok()?,
+ day.as_str().parse::<u32>().ok()?,
+ )?;
+
+ Some(DateIncrementor {
+ date,
+ field,
+ range,
+ format,
+ })
+ })
+ }
+}
+
+impl Increment for DateIncrementor {
+ fn increment(&self, amount: i64) -> (Range, Tendril) {
+ let date = match self.field {
+ DateField::Year => add_years(self.date, amount),
+ DateField::Month => add_months(self.date, amount),
+ DateField::Day => add_days(self.date, amount),
+ }
+ .unwrap_or(self.date);
+
+ (
+ self.range,
+ format!(
+ "{:04}{}{:02}{}{:02}",
+ date.year(),
+ self.format.separator,
+ date.month(),
+ self.format.separator,
+ date.day()
+ )
+ .into(),
+ )
+ }
+}
+
+#[cfg(test)]
+mod test {
+ use super::*;
+ use crate::Rope;
+
+ #[test]
+ fn test_create_incrementor_for_year_with_dashes() {
+ let rope = Rope::from_str("2021-11-15");
+
+ for cursor in 0..=3 {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Year,
+ format: FORMATS[0],
+ })
+ );
+ }
+ }
+
+ #[test]
+ fn test_create_incrementor_for_month_with_dashes() {
+ let rope = Rope::from_str("2021-11-15");
+
+ for cursor in 5..=6 {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Month,
+ format: FORMATS[0],
+ })
+ );
+ }
+ }
+
+ #[test]
+ fn test_create_incrementor_for_day_with_dashes() {
+ let rope = Rope::from_str("2021-11-15");
+
+ for cursor in 8..=9 {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Day,
+ format: FORMATS[0],
+ })
+ );
+ }
+ }
+
+ #[test]
+ fn test_try_create_incrementor_on_dashes() {
+ let rope = Rope::from_str("2021-11-15");
+
+ for &cursor in &[4, 7] {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(DateIncrementor::from_range(rope.slice(..), range), None,);
+ }
+ }
+
+ #[test]
+ fn test_create_incrementor_for_year_with_slashes() {
+ let rope = Rope::from_str("2021/11/15");
+
+ for cursor in 0..=3 {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Year,
+ format: FORMATS[1],
+ })
+ );
+ }
+ }
+
+ #[test]
+ fn test_create_incrementor_for_month_with_slashes() {
+ let rope = Rope::from_str("2021/11/15");
+
+ for cursor in 5..=6 {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Month,
+ format: FORMATS[1],
+ })
+ );
+ }
+ }
+
+ #[test]
+ fn test_create_incrementor_for_day_with_slashes() {
+ let rope = Rope::from_str("2021/11/15");
+
+ for cursor in 8..=9 {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Day,
+ format: FORMATS[1],
+ })
+ );
+ }
+ }
+
+ #[test]
+ fn test_try_create_incrementor_on_slashes() {
+ let rope = Rope::from_str("2021/11/15");
+
+ for &cursor in &[4, 7] {
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(DateIncrementor::from_range(rope.slice(..), range), None,);
+ }
+ }
+
+ #[test]
+ fn test_date_surrounded_by_spaces() {
+ let rope = Rope::from_str(" 2021-11-15 ");
+ let range = Range::new(3, 4);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(3, 13),
+ field: DateField::Year,
+ format: FORMATS[0],
+ })
+ );
+ }
+
+ #[test]
+ fn test_date_in_single_quotes() {
+ let rope = Rope::from_str("date = '2021-11-15'");
+ let range = Range::new(10, 11);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(8, 18),
+ field: DateField::Year,
+ format: FORMATS[0],
+ })
+ );
+ }
+
+ #[test]
+ fn test_date_in_double_quotes() {
+ let rope = Rope::from_str("let date = \"2021-11-15\";");
+ let range = Range::new(12, 13);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(12, 22),
+ field: DateField::Year,
+ format: FORMATS[0],
+ })
+ );
+ }
+
+ #[test]
+ fn test_date_cursor_one_right_of_date() {
+ let rope = Rope::from_str("2021-11-15 ");
+ let range = Range::new(10, 11);
+ assert_eq!(DateIncrementor::from_range(rope.slice(..), range), None);
+ }
+
+ #[test]
+ fn test_date_cursor_one_left_of_number() {
+ let rope = Rope::from_str(" 2021-11-15");
+ let range = Range::new(0, 1);
+ assert_eq!(DateIncrementor::from_range(rope.slice(..), range), None);
+ }
+
+ #[test]
+ fn test_date_empty_range_at_beginning() {
+ let rope = Rope::from_str("2021-11-15");
+ let range = Range::point(0);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Year,
+ format: FORMATS[0],
+ })
+ );
+ }
+
+ #[test]
+ fn test_date_empty_range_at_in_middle() {
+ let rope = Rope::from_str("2021-11-15");
+ let range = Range::point(5);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range),
+ Some(DateIncrementor {
+ date: NaiveDate::from_ymd(2021, 11, 15),
+ range: Range::new(0, 10),
+ field: DateField::Month,
+ format: FORMATS[0],
+ })
+ );
+ }
+
+ #[test]
+ fn test_date_empty_range_at_end() {
+ let rope = Rope::from_str("2021-11-15");
+ let range = Range::point(10);
+ assert_eq!(DateIncrementor::from_range(rope.slice(..), range), None);
+ }
+
+ #[test]
+ fn test_invalid_dates() {
+ let tests = [
+ "0000-00-00",
+ "1980-2-21",
+ "1980-12-1",
+ "12345",
+ "2020-02-30",
+ "1999-12-32",
+ "19-12-32",
+ "1-2-3",
+ "0000/00/00",
+ "1980/2/21",
+ "1980/12/1",
+ "12345",
+ "2020/02/30",
+ "1999/12/32",
+ "19/12/32",
+ "1/2/3",
+ ];
+
+ for invalid in tests {
+ let rope = Rope::from_str(invalid);
+ let range = Range::new(0, 1);
+
+ assert_eq!(DateIncrementor::from_range(rope.slice(..), range), None);
+ }
+ }
+
+ #[test]
+ fn test_increment_dates() {
+ let tests = [
+ // (original, cursor, amount, expected)
+ ("2020-02-28", 0, 1, "2021-02-28"),
+ ("2020-02-29", 0, 1, "2021-03-01"),
+ ("2020-01-31", 5, 1, "2020-02-29"),
+ ("2020-01-20", 5, 1, "2020-02-20"),
+ ("2021-01-01", 5, -1, "2020-12-01"),
+ ("2021-01-31", 5, -2, "2020-11-30"),
+ ("2020-02-28", 8, 1, "2020-02-29"),
+ ("2021-02-28", 8, 1, "2021-03-01"),
+ ("2021-02-28", 0, -1, "2020-02-28"),
+ ("2021-03-01", 0, -1, "2020-03-01"),
+ ("2020-02-29", 5, -1, "2020-01-29"),
+ ("2020-02-20", 5, -1, "2020-01-20"),
+ ("2020-02-29", 8, -1, "2020-02-28"),
+ ("2021-03-01", 8, -1, "2021-02-28"),
+ ("1980/12/21", 8, 100, "1981/03/31"),
+ ("1980/12/21", 8, -100, "1980/09/12"),
+ ("1980/12/21", 8, 1000, "1983/09/17"),
+ ("1980/12/21", 8, -1000, "1978/03/27"),
+ ];
+
+ for (original, cursor, amount, expected) in tests {
+ let rope = Rope::from_str(original);
+ let range = Range::new(cursor, cursor + 1);
+ assert_eq!(
+ DateIncrementor::from_range(rope.slice(..), range)
+ .unwrap()
+ .increment(amount)
+ .1,
+ expected.into()
+ );
+ }
+ }
+}
diff --git a/helix-core/src/increment/mod.rs b/helix-core/src/increment/mod.rs
new file mode 100644
index 00000000..71a1f183
--- /dev/null
+++ b/helix-core/src/increment/mod.rs
@@ -0,0 +1,8 @@
+pub mod date;
+pub mod number;
+
+use crate::{Range, Tendril};
+
+pub trait Increment {
+ fn increment(&self, amount: i64) -> (Range, Tendril);
+}
diff --git a/helix-core/src/increment/number.rs b/helix-core/src/increment/number.rs
new file mode 100644
index 00000000..a19b7e75
--- /dev/null
+++ b/helix-core/src/increment/number.rs
@@ -0,0 +1,507 @@
+use std::borrow::Cow;
+
+use ropey::RopeSlice;
+
+use super::Increment;
+
+use crate::{
+ textobject::{textobject_word, TextObject},
+ Range, Tendril,
+};
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct NumberIncrementor<'a> {
+ value: i64,
+ radix: u32,
+ range: Range,
+
+ text: RopeSlice<'a>,
+}
+
+impl<'a> NumberIncrementor<'a> {
+ /// Return information about number under rang if there is one.
+ pub fn from_range(text: RopeSlice, range: Range) -> Option<NumberIncrementor> {
+ // If the cursor is on the minus sign of a number we want to get the word textobject to the
+ // right of it.
+ let range = if range.to() < text.len_chars()
+ && range.to() - range.from() <= 1
+ && text.char(range.from()) == '-'
+ {
+ Range::new(range.from() + 1, range.to() + 1)
+ } else {
+ range
+ };
+
+ let range = textobject_word(text, range, TextObject::Inside, 1, false);
+
+ // If there is a minus sign to the left of the word object, we want to include it in the range.
+ let range = if range.from() > 0 && text.char(range.from() - 1) == '-' {
+ range.extend(range.from() - 1, range.from())
+ } else {
+ range
+ };
+
+ let word: String = text
+ .slice(range.from()..range.to())
+ .chars()
+ .filter(|&c| c != '_')
+ .collect();
+ let (radix, prefixed) = if word.starts_with("0x") {
+ (16, true)
+ } else if word.starts_with("0o") {
+ (8, true)
+ } else if word.starts_with("0b") {
+ (2, true)
+ } else {
+ (10, false)
+ };
+
+ let number = if prefixed { &word[2..] } else { &word };
+
+ let value = i128::from_str_radix(number, radix).ok()?;
+ if (value.is_positive() && value.leading_zeros() < 64)
+ || (value.is_negative() && value.leading_ones() < 64)
+ {
+ return None;
+ }
+
+ let value = value as i64;
+ Some(NumberIncrementor {
+ range,
+ value,
+ radix,
+ text,
+ })
+ }
+}
+
+impl<'a> Increment for NumberIncrementor<'a> {
+ fn increment(&self, amount: i64) -> (Range, Tendril) {
+ let old_text: Cow<str> = self.text.slice(self.range.from()..self.range.to()).into();
+ let old_length = old_text.len();
+ let new_value = self.value.wrapping_add(amount);
+
+ // Get separator indexes from right to left.
+ let separator_rtl_indexes: Vec<usize> = old_text
+ .chars()
+ .rev()
+ .enumerate()
+ .filter_map(|(i, c)| if c == '_' { Some(i) } else { None })
+ .collect();
+
+ let format_length = if self.radix == 10 {
+ match (self.value.is_negative(), new_value.is_negative()) {
+ (true, false) => old_length - 1,
+ (false, true) => old_length + 1,
+ _ => old_text.len(),
+ }
+ } else {
+ old_text.len() - 2
+ } - separator_rtl_indexes.len();
+
+ let mut new_text = match self.radix {
+ 2 => format!("0b{:01$b}", new_value, format_length),
+ 8 => format!("0o{:01$o}", new_value, format_length),
+ 10 if old_text.starts_with('0') || old_text.starts_with("-0") => {
+ format!("{:01$}", new_value, format_length)
+ }
+ 10 => format!("{}", new_value),
+ 16 => {
+ let (lower_count, upper_count): (usize, usize) =
+ old_text.chars().skip(2).fold((0, 0), |(lower, upper), c| {
+ (
+ lower + c.is_ascii_lowercase().then(|| 1).unwrap_or(0),
+ upper + c.is_ascii_uppercase().then(|| 1).unwrap_or(0),
+ )
+ });
+ if upper_count > lower_count {
+ format!("0x{:01$X}", new_value, format_length)
+ } else {
+ format!("0x{:01$x}", new_value, format_length)
+ }
+ }
+ _ => unimplemented!("radix not supported: {}", self.radix),
+ };
+
+ // Add separators from original number.
+ for &rtl_index in &separator_rtl_indexes {
+ if rtl_index < new_text.len() {
+ let new_index = new_text.len() - rtl_index;
+ new_text.insert(new_index, '_');
+ }
+ }
+
+ // Add in additional separators if necessary.
+ if new_text.len() > old_length && !separator_rtl_indexes.is_empty() {
+ let spacing = match separator_rtl_indexes.as_slice() {
+ [.., b, a] => a - b - 1,
+ _ => separator_rtl_indexes[0],
+ };
+
+ let prefix_length = if self.radix == 10 { 0 } else { 2 };
+ if let Some(mut index) = new_text.find('_') {
+ while index - prefix_length > spacing {
+ index -= spacing;
+ new_text.insert(index, '_');
+ }
+ }
+ }
+
+ (self.range, new_text.into())
+ }
+}
+
+#[cfg(test)]
+mod test {
+ use super::*;
+ use crate::Rope;
+
+ #[test]
+ fn test_decimal_at_point() {
+ let rope = Rope::from_str("Test text 12345 more text.");
+ let range = Range::point(12);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 15),
+ value: 12345,
+ radix: 10,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_uppercase_hexadecimal_at_point() {
+ let rope = Rope::from_str("Test text 0x123ABCDEF more text.");
+ let range = Range::point(12);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 21),
+ value: 0x123ABCDEF,
+ radix: 16,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_lowercase_hexadecimal_at_point() {
+ let rope = Rope::from_str("Test text 0xfa3b4e more text.");
+ let range = Range::point(12);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 18),
+ value: 0xfa3b4e,
+ radix: 16,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_octal_at_point() {
+ let rope = Rope::from_str("Test text 0o1074312 more text.");
+ let range = Range::point(12);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 19),
+ value: 0o1074312,
+ radix: 8,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_binary_at_point() {
+ let rope = Rope::from_str("Test text 0b10111010010101 more text.");
+ let range = Range::point(12);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 26),
+ value: 0b10111010010101,
+ radix: 2,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_negative_decimal_at_point() {
+ let rope = Rope::from_str("Test text -54321 more text.");
+ let range = Range::point(12);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 16),
+ value: -54321,
+ radix: 10,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_decimal_with_leading_zeroes_at_point() {
+ let rope = Rope::from_str("Test text 000045326 more text.");
+ let range = Range::point(12);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 19),
+ value: 45326,
+ radix: 10,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_negative_decimal_cursor_on_minus_sign() {
+ let rope = Rope::from_str("Test text -54321 more text.");
+ let range = Range::point(10);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(10, 16),
+ value: -54321,
+ radix: 10,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_number_under_range_start_of_rope() {
+ let rope = Rope::from_str("100");
+ let range = Range::point(0);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(0, 3),
+ value: 100,
+ radix: 10,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_number_under_range_end_of_rope() {
+ let rope = Rope::from_str("100");
+ let range = Range::point(2);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(0, 3),
+ value: 100,
+ radix: 10,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_number_surrounded_by_punctuation() {
+ let rope = Rope::from_str(",100;");
+ let range = Range::point(1);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range),
+ Some(NumberIncrementor {
+ range: Range::new(1, 4),
+ value: 100,
+ radix: 10,
+ text: rope.slice(..),
+ })
+ );
+ }
+
+ #[test]
+ fn test_not_a_number_point() {
+ let rope = Rope::from_str("Test text 45326 more text.");
+ let range = Range::point(6);
+ assert_eq!(NumberIncrementor::from_range(rope.slice(..), range), None);
+ }
+
+ #[test]
+ fn test_number_too_large_at_point() {
+ let rope = Rope::from_str("Test text 0xFFFFFFFFFFFFFFFFF more text.");
+ let range = Range::point(12);
+ assert_eq!(NumberIncrementor::from_range(rope.slice(..), range), None);
+ }
+
+ #[test]
+ fn test_number_cursor_one_right_of_number() {
+ let rope = Rope::from_str("100 ");
+ let range = Range::point(3);
+ assert_eq!(NumberIncrementor::from_range(rope.slice(..), range), None);
+ }
+
+ #[test]
+ fn test_number_cursor_one_left_of_number() {
+ let rope = Rope::from_str(" 100");
+ let range = Range::point(0);
+ assert_eq!(NumberIncrementor::from_range(rope.slice(..), range), None);
+ }
+
+ #[test]
+ fn test_increment_basic_decimal_numbers() {
+ let tests = [
+ ("100", 1, "101"),
+ ("100", -1, "99"),
+ ("99", 1, "100"),
+ ("100", 1000, "1100"),
+ ("100", -1000, "-900"),
+ ("-1", 1, "0"),
+ ("-1", 2, "1"),
+ ("1", -1, "0"),
+ ("1", -2, "-1"),
+ ];
+
+ for (original, amount, expected) in tests {
+ let rope = Rope::from_str(original);
+ let range = Range::point(0);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range)
+ .unwrap()
+ .increment(amount)
+ .1,
+ expected.into()
+ );
+ }
+ }
+
+ #[test]
+ fn test_increment_basic_hexadedimal_numbers() {
+ let tests = [
+ ("0x0100", 1, "0x0101"),
+ ("0x0100", -1, "0x00ff"),
+ ("0x0001", -1, "0x0000"),
+ ("0x0000", -1, "0xffffffffffffffff"),
+ ("0xffffffffffffffff", 1, "0x0000000000000000"),
+ ("0xffffffffffffffff", 2, "0x0000000000000001"),
+ ("0xffffffffffffffff", -1, "0xfffffffffffffffe"),
+ ("0xABCDEF1234567890", 1, "0xABCDEF1234567891"),
+ ("0xabcdef1234567890", 1, "0xabcdef1234567891"),
+ ];
+
+ for (original, amount, expected) in tests {
+ let rope = Rope::from_str(original);
+ let range = Range::point(0);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range)
+ .unwrap()
+ .increment(amount)
+ .1,
+ expected.into()
+ );
+ }
+ }
+
+ #[test]
+ fn test_increment_basic_octal_numbers() {
+ let tests = [
+ ("0o0107", 1, "0o0110"),
+ ("0o0110", -1, "0o0107"),
+ ("0o0001", -1, "0o0000"),
+ ("0o7777", 1, "0o10000"),
+ ("0o1000", -1, "0o0777"),
+ ("0o0107", 10, "0o0121"),
+ ("0o0000", -1, "0o1777777777777777777777"),
+ ("0o1777777777777777777777", 1, "0o0000000000000000000000"),
+ ("0o1777777777777777777777", 2, "0o0000000000000000000001"),
+ ("0o1777777777777777777777", -1, "0o1777777777777777777776"),
+ ];
+
+ for (original, amount, expected) in tests {
+ let rope = Rope::from_str(original);
+ let range = Range::point(0);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range)
+ .unwrap()
+ .increment(amount)
+ .1,
+ expected.into()
+ );
+ }
+ }
+
+ #[test]
+ fn test_increment_basic_binary_numbers() {
+ let tests = [
+ ("0b00000100", 1, "0b00000101"),
+ ("0b00000100", -1, "0b00000011"),
+ ("0b00000100", 2, "0b00000110"),
+ ("0b00000100", -2, "0b00000010"),
+ ("0b00000001", -1, "0b00000000"),
+ ("0b00111111", 10, "0b01001001"),
+ ("0b11111111", 1, "0b100000000"),
+ ("0b10000000", -1, "0b01111111"),
+ (
+ "0b0000",
+ -1,
+ "0b1111111111111111111111111111111111111111111111111111111111111111",
+ ),
+ (
+ "0b1111111111111111111111111111111111111111111111111111111111111111",
+ 1,
+ "0b0000000000000000000000000000000000000000000000000000000000000000",
+ ),
+ (
+ "0b1111111111111111111111111111111111111111111111111111111111111111",
+ 2,
+ "0b0000000000000000000000000000000000000000000000000000000000000001",
+ ),
+ (
+ "0b1111111111111111111111111111111111111111111111111111111111111111",
+ -1,
+ "0b1111111111111111111111111111111111111111111111111111111111111110",
+ ),
+ ];
+
+ for (original, amount, expected) in tests {
+ let rope = Rope::from_str(original);
+ let range = Range::point(0);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range)
+ .unwrap()
+ .increment(amount)
+ .1,
+ expected.into()
+ );
+ }
+ }
+
+ #[test]
+ fn test_increment_with_separators() {
+ let tests = [
+ ("999_999", 1, "1_000_000"),
+ ("1_000_000", -1, "999_999"),
+ ("-999_999", -1, "-1_000_000"),
+ ("0x0000_0000_0001", 0x1_ffff_0000, "0x0001_ffff_0001"),
+ ("0x0000_0000_0001", 0x1_ffff_0000, "0x0001_ffff_0001"),
+ ("0x0000_0000_0001", 0x1_ffff_0000, "0x0001_ffff_0001"),
+ ("0x0000_0000", -1, "0xffff_ffff_ffff_ffff"),
+ ("0x0000_0000_0000", -1, "0xffff_ffff_ffff_ffff"),
+ ("0b01111111_11111111", 1, "0b10000000_00000000"),
+ ("0b11111111_11111111", 1, "0b1_00000000_00000000"),
+ ];
+
+ for (original, amount, expected) in tests {
+ let rope = Rope::from_str(original);
+ let range = Range::point(0);
+ assert_eq!(
+ NumberIncrementor::from_range(rope.slice(..), range)
+ .unwrap()
+ .increment(amount)
+ .1,
+ expected.into()
+ );
+ }
+ }
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-16 23:42:32 +0000