| #![cfg_attr(feature = "nightly", feature(step_trait, step_trait_ext))] |
| |
| use std::marker::PhantomData; |
| use std::path::PathBuf; |
| |
| #[cfg(feature = "nightly")] |
| use std::iter::Step; |
| |
| use serde::{Deserialize, Serialize}; |
| |
| pub mod compiler; |
| |
| #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord)] |
| pub struct Column<I: Indexed>(pub u32, PhantomData<I>); |
| |
| impl<I: Indexed> Column<I> { |
| fn new(c: u32) -> Column<I> { |
| Column(c, PhantomData) |
| } |
| } |
| |
| impl<I: Indexed> Clone for Column<I> { |
| fn clone(&self) -> Column<I> { |
| *self |
| } |
| } |
| |
| impl<I: Indexed> Copy for Column<I> {} |
| |
| impl<I: Indexed> Serialize for Column<I> { |
| fn serialize<S: serde::Serializer>( |
| &self, |
| s: S, |
| ) -> Result<<S as serde::Serializer>::Ok, <S as serde::Serializer>::Error> { |
| s.serialize_u32(self.0) |
| } |
| } |
| |
| impl<'dt, I: Indexed> Deserialize<'dt> for Column<I> { |
| fn deserialize<D: serde::Deserializer<'dt>>( |
| d: D, |
| ) -> std::result::Result<Self, <D as serde::Deserializer<'dt>>::Error> { |
| <u32 as Deserialize>::deserialize(d).map(Column::new) |
| } |
| } |
| |
| #[cfg(feature = "serialize-rustc")] |
| impl<I: Indexed> rustc_serialize::Decodable for Column<I> { |
| fn decode<D: rustc_serialize::Decoder>(d: &mut D) -> Result<Column<I>, D::Error> { |
| d.read_u32().map(Column::new) |
| } |
| } |
| |
| #[cfg(feature = "serialize-rustc")] |
| impl<I: Indexed> rustc_serialize::Encodable for Column<I> { |
| fn encode<S: rustc_serialize::Encoder>(&self, s: &mut S) -> Result<(), S::Error> { |
| s.emit_u32(self.0) |
| } |
| } |
| |
| impl Column<OneIndexed> { |
| pub fn new_one_indexed(c: u32) -> Column<OneIndexed> { |
| Column(c, PhantomData) |
| } |
| |
| pub fn zero_indexed(self) -> Column<ZeroIndexed> { |
| Column(self.0 - 1, PhantomData) |
| } |
| } |
| |
| impl Column<ZeroIndexed> { |
| pub fn new_zero_indexed(c: u32) -> Column<ZeroIndexed> { |
| Column(c, PhantomData) |
| } |
| |
| pub fn one_indexed(self) -> Column<OneIndexed> { |
| Column(self.0 + 1, PhantomData) |
| } |
| } |
| |
| #[cfg(feature = "nightly")] |
| macro_rules! impl_step { |
| ($target: ty) => { |
| unsafe impl Step for $target { |
| fn steps_between(start: &Self, end: &Self) -> Option<usize> { |
| Step::steps_between(&start.0, &end.0) |
| } |
| fn forward_checked(arg: Self, count: usize) -> Option<Self> { |
| Step::forward_checked(arg.0, count).map(|x| Self(x, PhantomData)) |
| } |
| fn backward_checked(arg: Self, count: usize) -> Option<Self> { |
| Step::backward_checked(arg.0, count).map(|x| Self(x, PhantomData)) |
| } |
| } |
| }; |
| } |
| |
| #[cfg(feature = "nightly")] |
| impl_step!(Column<ZeroIndexed>); |
| #[cfg(feature = "nightly")] |
| impl_step!(Column<OneIndexed>); |
| #[cfg(feature = "nightly")] |
| impl_step!(Row<ZeroIndexed>); |
| #[cfg(feature = "nightly")] |
| impl_step!(Row<OneIndexed>); |
| |
| #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord)] |
| pub struct Row<I: Indexed>(pub u32, PhantomData<I>); |
| |
| impl<I: Indexed> Row<I> { |
| fn new(c: u32) -> Row<I> { |
| Row(c, PhantomData) |
| } |
| } |
| |
| impl<I: Indexed> Clone for Row<I> { |
| fn clone(&self) -> Row<I> { |
| *self |
| } |
| } |
| |
| impl<I: Indexed> Copy for Row<I> {} |
| |
| impl<I: Indexed> serde::Serialize for Row<I> { |
| fn serialize<S: serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> { |
| s.serialize_u32(self.0) |
| } |
| } |
| |
| impl<'dt, I: Indexed> serde::Deserialize<'dt> for Row<I> { |
| fn deserialize<D: serde::Deserializer<'dt>>(d: D) -> std::result::Result<Self, D::Error> { |
| <u32 as Deserialize>::deserialize(d).map(Row::new) |
| } |
| } |
| |
| #[cfg(feature = "serialize-rustc")] |
| impl<I: Indexed> rustc_serialize::Decodable for Row<I> { |
| fn decode<D: rustc_serialize::Decoder>(d: &mut D) -> Result<Row<I>, D::Error> { |
| d.read_u32().map(Row::new) |
| } |
| } |
| |
| #[cfg(feature = "serialize-rustc")] |
| impl<I: Indexed> rustc_serialize::Encodable for Row<I> { |
| fn encode<S: rustc_serialize::Encoder>(&self, s: &mut S) -> Result<(), S::Error> { |
| s.emit_u32(self.0) |
| } |
| } |
| |
| impl Row<OneIndexed> { |
| pub fn new_one_indexed(c: u32) -> Row<OneIndexed> { |
| Row(c, PhantomData) |
| } |
| |
| pub fn zero_indexed(self) -> Row<ZeroIndexed> { |
| Row(self.0 - 1, PhantomData) |
| } |
| } |
| |
| impl Row<ZeroIndexed> { |
| pub fn new_zero_indexed(c: u32) -> Row<ZeroIndexed> { |
| Row(c, PhantomData) |
| } |
| |
| pub fn one_indexed(self) -> Row<OneIndexed> { |
| Row(self.0 + 1, PhantomData) |
| } |
| } |
| |
| #[cfg_attr(feature = "derive", derive(Serialize, Deserialize))] |
| #[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable, RustcEncodable))] |
| #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord)] |
| pub struct Position<I: Indexed> { |
| pub row: Row<I>, |
| pub col: Column<I>, |
| } |
| |
| impl<I: Indexed> Position<I> { |
| pub fn new(row: Row<I>, col: Column<I>) -> Position<I> { |
| Position { row, col } |
| } |
| } |
| |
| impl<I: Indexed> Clone for Position<I> { |
| fn clone(&self) -> Position<I> { |
| *self |
| } |
| } |
| |
| impl<I: Indexed> Copy for Position<I> {} |
| |
| impl Position<OneIndexed> { |
| pub fn zero_indexed(self) -> Position<ZeroIndexed> { |
| Position { row: self.row.zero_indexed(), col: self.col.zero_indexed() } |
| } |
| } |
| |
| impl Position<ZeroIndexed> { |
| pub fn one_indexed(self) -> Position<OneIndexed> { |
| Position { row: self.row.one_indexed(), col: self.col.one_indexed() } |
| } |
| } |
| |
| #[cfg_attr(feature = "derive", derive(Serialize, Deserialize))] |
| #[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable, RustcEncodable))] |
| #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord)] |
| pub struct Range<I: Indexed> { |
| pub row_start: Row<I>, |
| pub row_end: Row<I>, |
| pub col_start: Column<I>, |
| pub col_end: Column<I>, |
| } |
| |
| impl<I: Indexed> Range<I> { |
| pub fn new( |
| row_start: Row<I>, |
| row_end: Row<I>, |
| col_start: Column<I>, |
| col_end: Column<I>, |
| ) -> Range<I> { |
| Range { row_start, row_end, col_start, col_end } |
| } |
| |
| pub fn from_positions(start: Position<I>, end: Position<I>) -> Range<I> { |
| Range { row_start: start.row, row_end: end.row, col_start: start.col, col_end: end.col } |
| } |
| |
| pub fn start(self) -> Position<I> { |
| Position { row: self.row_start, col: self.col_start } |
| } |
| |
| pub fn end(self) -> Position<I> { |
| Position { row: self.row_end, col: self.col_end } |
| } |
| } |
| |
| impl<I: Indexed> Clone for Range<I> { |
| fn clone(&self) -> Range<I> { |
| *self |
| } |
| } |
| |
| impl<I: Indexed> Copy for Range<I> {} |
| |
| impl Range<OneIndexed> { |
| pub fn zero_indexed(self) -> Range<ZeroIndexed> { |
| Range { |
| row_start: self.row_start.zero_indexed(), |
| row_end: self.row_end.zero_indexed(), |
| col_start: self.col_start.zero_indexed(), |
| col_end: self.col_end.zero_indexed(), |
| } |
| } |
| } |
| |
| impl Range<ZeroIndexed> { |
| pub fn one_indexed(self) -> Range<OneIndexed> { |
| Range { |
| row_start: self.row_start.one_indexed(), |
| row_end: self.row_end.one_indexed(), |
| col_start: self.col_start.one_indexed(), |
| col_end: self.col_end.one_indexed(), |
| } |
| } |
| } |
| |
| #[cfg_attr(feature = "derive", derive(Serialize, Deserialize))] |
| #[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable, RustcEncodable))] |
| #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord)] |
| pub struct Location<I: Indexed> { |
| pub file: PathBuf, |
| pub position: Position<I>, |
| } |
| |
| impl<I: Indexed> Location<I> { |
| pub fn new<F: Into<PathBuf>>(row: Row<I>, col: Column<I>, file: F) -> Location<I> { |
| Location { position: Position { row, col }, file: file.into() } |
| } |
| |
| pub fn from_position<F: Into<PathBuf>>(position: Position<I>, file: F) -> Location<I> { |
| Location { position, file: file.into() } |
| } |
| } |
| |
| impl<I: Indexed> Clone for Location<I> { |
| fn clone(&self) -> Location<I> { |
| Location { position: self.position, file: self.file.clone() } |
| } |
| } |
| |
| impl Location<OneIndexed> { |
| pub fn zero_indexed(&self) -> Location<ZeroIndexed> { |
| Location { position: self.position.zero_indexed(), file: self.file.clone() } |
| } |
| } |
| |
| impl Location<ZeroIndexed> { |
| pub fn one_indexed(&self) -> Location<OneIndexed> { |
| Location { position: self.position.one_indexed(), file: self.file.clone() } |
| } |
| } |
| |
| #[cfg_attr(feature = "derive", derive(Serialize, Deserialize))] |
| #[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable, RustcEncodable))] |
| #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord)] |
| pub struct Span<I: Indexed> { |
| pub file: PathBuf, |
| pub range: Range<I>, |
| } |
| |
| impl<I: Indexed> Span<I> { |
| pub fn new<F: Into<PathBuf>>( |
| row_start: Row<I>, |
| row_end: Row<I>, |
| col_start: Column<I>, |
| col_end: Column<I>, |
| file: F, |
| ) -> Span<I> { |
| Span { range: Range { row_start, row_end, col_start, col_end }, file: file.into() } |
| } |
| |
| pub fn from_range<F: Into<PathBuf>>(range: Range<I>, file: F) -> Span<I> { |
| Span { range, file: file.into() } |
| } |
| |
| pub fn from_positions<F: Into<PathBuf>>( |
| start: Position<I>, |
| end: Position<I>, |
| file: F, |
| ) -> Span<I> { |
| Span { range: Range::from_positions(start, end), file: file.into() } |
| } |
| } |
| |
| impl<I: Indexed> Clone for Span<I> { |
| fn clone(&self) -> Span<I> { |
| Span { range: self.range, file: self.file.clone() } |
| } |
| } |
| |
| impl Span<OneIndexed> { |
| pub fn zero_indexed(&self) -> Span<ZeroIndexed> { |
| Span { range: self.range.zero_indexed(), file: self.file.clone() } |
| } |
| } |
| |
| impl Span<ZeroIndexed> { |
| pub fn one_indexed(&self) -> Span<OneIndexed> { |
| Span { range: self.range.one_indexed(), file: self.file.clone() } |
| } |
| } |
| |
| pub trait Indexed {} |
| |
| #[cfg_attr(feature = "derive", derive(Serialize, Deserialize))] |
| #[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable, RustcEncodable))] |
| #[derive(Hash, PartialEq, Eq, Debug, PartialOrd, Ord)] |
| pub struct ZeroIndexed; |
| impl Indexed for ZeroIndexed {} |
| |
| #[cfg_attr(feature = "derive", derive(Serialize, Deserialize))] |
| #[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable, RustcEncodable))] |
| #[derive(Hash, PartialEq, Eq, Debug, PartialOrd, Ord)] |
| pub struct OneIndexed; |
| impl Indexed for OneIndexed {} |
| |
| #[cfg(feature = "nightly")] |
| #[cfg(test)] |
| mod test { |
| use super::*; |
| |
| #[test] |
| fn iter_row() { |
| assert_eq!((Row::new_one_indexed(4)..Row::new_one_indexed(8)).count(), 4); |
| assert_eq!( |
| &*(Row::new_zero_indexed(0)..=Row::new_zero_indexed(8)) |
| .filter(|r| r.0 < 3) |
| .map(|r| r.0) |
| .collect::<Vec<_>>(), |
| &[0, 1, 2], |
| ); |
| } |
| } |