Expand description
WrapErr free grammar type
Fields
st: String
Start symbol of the grammar
pr: Vec<Pr>
Set of productions
Implementations
sourceimpl Cfg
impl Cfg
sourcepub fn get_start_symbol(&self) -> &str
pub fn get_start_symbol(&self) -> &str
Returns the start symbol of the grammar
sourcepub fn with_start_symbol(n: &str) -> Self
pub fn with_start_symbol(n: &str) -> Self
Creates a new item with the given start symbol
sourcepub fn get_start_symbol_position(&self) -> Option<Pos>
pub fn get_start_symbol_position(&self) -> Option<Pos>
Returns the grammar position of the start symbol
sourcepub fn get_non_terminal_set(&self) -> BTreeSet<String>
pub fn get_non_terminal_set(&self) -> BTreeSet<String>
Set of Non-terminals, ordered alphabetically.
sourcepub fn get_non_terminal_ordering(&self) -> Vec<(String, Pos)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
pub fn get_non_terminal_ordering(&self) -> Vec<(String, Pos)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
A: Allocator,
Set of Non-terminals, ordered by occurrence Start symbol comes first
sourcepub fn get_ordered_terminals(&self) -> Vec<(&str, Vec<usize>)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
pub fn get_ordered_terminals(&self) -> Vec<(&str, Vec<usize>)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
A: Allocator,
Set of Terminals - ordered by occurrence. Used for Lexer generation.
sourcepub fn get_terminal_positions(&self) -> BTreeMap<Pos, &Symbol>
pub fn get_terminal_positions(&self) -> BTreeMap<Pos, &Symbol>
Terminal positions within the grammar Used for Nt grammar graphs
sourcepub fn get_non_terminal_positions(&self) -> BTreeMap<Pos, String>
pub fn get_non_terminal_positions(&self) -> BTreeMap<Pos, String>
Non-terminal positions within the grammar Used for Nt grammar graphs
sourcepub fn matching_productions(&self, n: &str) -> Vec<(usize, &Pr)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
pub fn matching_productions(&self, n: &str) -> Vec<(usize, &Pr)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
A: Allocator,
Returns a vector of production references with the LHS matching the given non-terminal n
sourcepub fn get_alternations_count(
&self,
prod_num: ProductionIndex
) -> Result<usize, &'static str>
pub fn get_alternations_count(
&self,
prod_num: ProductionIndex
) -> Result<usize, &'static str>
Returns the number of alternatives of a given production. Used for auto generation to get a more stable generation experience.
sourcepub fn get_alternation_index_of_production(
&self,
prod_num: ProductionIndex
) -> Result<usize, &'static str>
pub fn get_alternation_index_of_production(
&self,
prod_num: ProductionIndex
) -> Result<usize, &'static str>
Returns the relative index of a production within its alternatives. Used for auto generation to get a more stable generation experience.
sourcepub fn calculate_nullable_non_terminals(&self) -> BTreeSet<String>
pub fn calculate_nullable_non_terminals(&self) -> BTreeSet<String>
Calculates all nullable non-terminals.
use parol::{Cfg, Pr, Symbol};
use std::collections::BTreeSet;
use std::convert::From;
let g = Cfg::with_start_symbol("S")
.add_pr(Pr::new("S", vec![Symbol::n("Y")]))
.add_pr(Pr::new("Y", vec![Symbol::n("U"), Symbol::n("Z")]))
.add_pr(Pr::new("Y", vec![Symbol::n("X"), Symbol::t_n("a", vec![0])]))
.add_pr(Pr::new("Y", vec![Symbol::t_n("b", vec![0])]))
.add_pr(Pr::new("U", vec![Symbol::n("V")]))
.add_pr(Pr::new("U", vec![]))
.add_pr(Pr::new("X", vec![Symbol::t_n("c", vec![0])]))
.add_pr(Pr::new("V", vec![Symbol::n("V"), Symbol::t_n("d", vec![0])]))
.add_pr(Pr::new("V", vec![Symbol::t_n("d", vec![0])]))
.add_pr(Pr::new("Z", vec![]))
.add_pr(Pr::new("Z", vec![Symbol::n("Z"), Symbol::n("X")]));
let productive = g.calculate_nullable_non_terminals();
assert_eq!(
[
"S".to_owned(),
"U".to_owned(),
"Y".to_owned(),
"Z".to_owned()
].iter().cloned().collect::<BTreeSet<String>>(),
productive);
Trait Implementations
sourceimpl From<&Cfg> for NtGrammarGraph
impl From<&Cfg> for NtGrammarGraph
Auto Trait Implementations
impl RefUnwindSafe for Cfg
impl Send for Cfg
impl Sync for Cfg
impl Unpin for Cfg
impl UnwindSafe for Cfg
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<D> OwoColorize for D
impl<D> OwoColorize for D
sourcefn fg<C>(&self) -> FgColorDisplay<'_, C, Self>where
C: Color,
fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>where
C: Color,
Set the foreground color generically Read more
sourcefn bg<C>(&self) -> BgColorDisplay<'_, C, Self>where
C: Color,
fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>where
C: Color,
Set the background color generically. Read more
sourcefn black(&'a self) -> FgColorDisplay<'a, Black, Self>
fn black(&'a self) -> FgColorDisplay<'a, Black, Self>
Change the foreground color to black
sourcefn on_black(&'a self) -> BgColorDisplay<'a, Black, Self>
fn on_black(&'a self) -> BgColorDisplay<'a, Black, Self>
Change the background color to black
sourcefn red(&'a self) -> FgColorDisplay<'a, Red, Self>
fn red(&'a self) -> FgColorDisplay<'a, Red, Self>
Change the foreground color to red
sourcefn on_red(&'a self) -> BgColorDisplay<'a, Red, Self>
fn on_red(&'a self) -> BgColorDisplay<'a, Red, Self>
Change the background color to red
sourcefn green(&'a self) -> FgColorDisplay<'a, Green, Self>
fn green(&'a self) -> FgColorDisplay<'a, Green, Self>
Change the foreground color to green
sourcefn on_green(&'a self) -> BgColorDisplay<'a, Green, Self>
fn on_green(&'a self) -> BgColorDisplay<'a, Green, Self>
Change the background color to green
sourcefn yellow(&'a self) -> FgColorDisplay<'a, Yellow, Self>
fn yellow(&'a self) -> FgColorDisplay<'a, Yellow, Self>
Change the foreground color to yellow
sourcefn on_yellow(&'a self) -> BgColorDisplay<'a, Yellow, Self>
fn on_yellow(&'a self) -> BgColorDisplay<'a, Yellow, Self>
Change the background color to yellow
sourcefn blue(&'a self) -> FgColorDisplay<'a, Blue, Self>
fn blue(&'a self) -> FgColorDisplay<'a, Blue, Self>
Change the foreground color to blue
sourcefn on_blue(&'a self) -> BgColorDisplay<'a, Blue, Self>
fn on_blue(&'a self) -> BgColorDisplay<'a, Blue, Self>
Change the background color to blue
sourcefn magenta(&'a self) -> FgColorDisplay<'a, Magenta, Self>
fn magenta(&'a self) -> FgColorDisplay<'a, Magenta, Self>
Change the foreground color to magenta
sourcefn on_magenta(&'a self) -> BgColorDisplay<'a, Magenta, Self>
fn on_magenta(&'a self) -> BgColorDisplay<'a, Magenta, Self>
Change the background color to magenta
sourcefn purple(&'a self) -> FgColorDisplay<'a, Magenta, Self>
fn purple(&'a self) -> FgColorDisplay<'a, Magenta, Self>
Change the foreground color to purple
sourcefn on_purple(&'a self) -> BgColorDisplay<'a, Magenta, Self>
fn on_purple(&'a self) -> BgColorDisplay<'a, Magenta, Self>
Change the background color to purple
sourcefn cyan(&'a self) -> FgColorDisplay<'a, Cyan, Self>
fn cyan(&'a self) -> FgColorDisplay<'a, Cyan, Self>
Change the foreground color to cyan
sourcefn on_cyan(&'a self) -> BgColorDisplay<'a, Cyan, Self>
fn on_cyan(&'a self) -> BgColorDisplay<'a, Cyan, Self>
Change the background color to cyan
sourcefn white(&'a self) -> FgColorDisplay<'a, White, Self>
fn white(&'a self) -> FgColorDisplay<'a, White, Self>
Change the foreground color to white
sourcefn on_white(&'a self) -> BgColorDisplay<'a, White, Self>
fn on_white(&'a self) -> BgColorDisplay<'a, White, Self>
Change the background color to white
sourcefn default_color(&'a self) -> FgColorDisplay<'a, Default, Self>
fn default_color(&'a self) -> FgColorDisplay<'a, Default, Self>
Change the foreground color to the terminal default
sourcefn on_default_color(&'a self) -> BgColorDisplay<'a, Default, Self>
fn on_default_color(&'a self) -> BgColorDisplay<'a, Default, Self>
Change the background color to the terminal default
sourcefn bright_black(&'a self) -> FgColorDisplay<'a, BrightBlack, Self>
fn bright_black(&'a self) -> FgColorDisplay<'a, BrightBlack, Self>
Change the foreground color to bright black
sourcefn on_bright_black(&'a self) -> BgColorDisplay<'a, BrightBlack, Self>
fn on_bright_black(&'a self) -> BgColorDisplay<'a, BrightBlack, Self>
Change the background color to bright black
sourcefn bright_red(&'a self) -> FgColorDisplay<'a, BrightRed, Self>
fn bright_red(&'a self) -> FgColorDisplay<'a, BrightRed, Self>
Change the foreground color to bright red
sourcefn on_bright_red(&'a self) -> BgColorDisplay<'a, BrightRed, Self>
fn on_bright_red(&'a self) -> BgColorDisplay<'a, BrightRed, Self>
Change the background color to bright red
sourcefn bright_green(&'a self) -> FgColorDisplay<'a, BrightGreen, Self>
fn bright_green(&'a self) -> FgColorDisplay<'a, BrightGreen, Self>
Change the foreground color to bright green
sourcefn on_bright_green(&'a self) -> BgColorDisplay<'a, BrightGreen, Self>
fn on_bright_green(&'a self) -> BgColorDisplay<'a, BrightGreen, Self>
Change the background color to bright green
sourcefn bright_yellow(&'a self) -> FgColorDisplay<'a, BrightYellow, Self>
fn bright_yellow(&'a self) -> FgColorDisplay<'a, BrightYellow, Self>
Change the foreground color to bright yellow
sourcefn on_bright_yellow(&'a self) -> BgColorDisplay<'a, BrightYellow, Self>
fn on_bright_yellow(&'a self) -> BgColorDisplay<'a, BrightYellow, Self>
Change the background color to bright yellow
sourcefn bright_blue(&'a self) -> FgColorDisplay<'a, BrightBlue, Self>
fn bright_blue(&'a self) -> FgColorDisplay<'a, BrightBlue, Self>
Change the foreground color to bright blue
sourcefn on_bright_blue(&'a self) -> BgColorDisplay<'a, BrightBlue, Self>
fn on_bright_blue(&'a self) -> BgColorDisplay<'a, BrightBlue, Self>
Change the background color to bright blue
sourcefn bright_magenta(&'a self) -> FgColorDisplay<'a, BrightMagenta, Self>
fn bright_magenta(&'a self) -> FgColorDisplay<'a, BrightMagenta, Self>
Change the foreground color to bright magenta
sourcefn on_bright_magenta(&'a self) -> BgColorDisplay<'a, BrightMagenta, Self>
fn on_bright_magenta(&'a self) -> BgColorDisplay<'a, BrightMagenta, Self>
Change the background color to bright magenta
sourcefn bright_purple(&'a self) -> FgColorDisplay<'a, BrightMagenta, Self>
fn bright_purple(&'a self) -> FgColorDisplay<'a, BrightMagenta, Self>
Change the foreground color to bright purple
sourcefn on_bright_purple(&'a self) -> BgColorDisplay<'a, BrightMagenta, Self>
fn on_bright_purple(&'a self) -> BgColorDisplay<'a, BrightMagenta, Self>
Change the background color to bright purple
sourcefn bright_cyan(&'a self) -> FgColorDisplay<'a, BrightCyan, Self>
fn bright_cyan(&'a self) -> FgColorDisplay<'a, BrightCyan, Self>
Change the foreground color to bright cyan
sourcefn on_bright_cyan(&'a self) -> BgColorDisplay<'a, BrightCyan, Self>
fn on_bright_cyan(&'a self) -> BgColorDisplay<'a, BrightCyan, Self>
Change the background color to bright cyan
sourcefn bright_white(&'a self) -> FgColorDisplay<'a, BrightWhite, Self>
fn bright_white(&'a self) -> FgColorDisplay<'a, BrightWhite, Self>
Change the foreground color to bright white
sourcefn on_bright_white(&'a self) -> BgColorDisplay<'a, BrightWhite, Self>
fn on_bright_white(&'a self) -> BgColorDisplay<'a, BrightWhite, Self>
Change the background color to bright white
sourcefn bold(&'a self) -> BoldDisplay<'a, Self>
fn bold(&'a self) -> BoldDisplay<'a, Self>
Make the text bold
sourcefn dimmed(&'a self) -> DimDisplay<'a, Self>
fn dimmed(&'a self) -> DimDisplay<'a, Self>
Make the text dim
sourcefn italic(&'a self) -> ItalicDisplay<'a, Self>
fn italic(&'a self) -> ItalicDisplay<'a, Self>
Make the text italicized
sourcefn underline(&'a self) -> UnderlineDisplay<'a, Self>
fn underline(&'a self) -> UnderlineDisplay<'a, Self>
Make the text italicized
sourcefn blink(&'a self) -> BlinkDisplay<'a, Self>
fn blink(&'a self) -> BlinkDisplay<'a, Self>
Make the text blink
sourcefn blink_fast(&'a self) -> BlinkFastDisplay<'a, Self>
fn blink_fast(&'a self) -> BlinkFastDisplay<'a, Self>
Make the text blink (but fast!)
sourcefn reversed(&'a self) -> ReversedDisplay<'a, Self>
fn reversed(&'a self) -> ReversedDisplay<'a, Self>
Swap the foreground and background colors
Hide the text
sourcefn strikethrough(&'a self) -> StrikeThroughDisplay<'a, Self>
fn strikethrough(&'a self) -> StrikeThroughDisplay<'a, Self>
Cross out the text
sourcefn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>where
Color: DynColor,
fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>where
Color: DynColor,
Set the foreground color at runtime. Only use if you do not know which color will be used at
compile-time. If the color is constant, use either OwoColorize::fg
or
a color-specific method, such as OwoColorize::green
, Read more
sourcefn on_color<Color>(&self, color: Color) -> BgDynColorDisplay<'_, Color, Self>where
Color: DynColor,
fn on_color<Color>(&self, color: Color) -> BgDynColorDisplay<'_, Color, Self>where
Color: DynColor,
Set the background color at runtime. Only use if you do not know what color to use at
compile-time. If the color is constant, use either OwoColorize::bg
or
a color-specific method, such as OwoColorize::on_yellow
, Read more
sourcefn fg_rgb<const R: u8, const G: u8, const B: u8>(
&self
) -> FgColorDisplay<'_, CustomColor<R, G, B>, Self>
fn fg_rgb<const R: u8, const G: u8, const B: u8>(
&self
) -> FgColorDisplay<'_, CustomColor<R, G, B>, Self>
Set the foreground color to a specific RGB value.
sourcefn bg_rgb<const R: u8, const G: u8, const B: u8>(
&self
) -> BgColorDisplay<'_, CustomColor<R, G, B>, Self>
fn bg_rgb<const R: u8, const G: u8, const B: u8>(
&self
) -> BgColorDisplay<'_, CustomColor<R, G, B>, Self>
Set the background color to a specific RGB value.
sourcefn truecolor(&self, r: u8, g: u8, b: u8) -> FgDynColorDisplay<'_, Rgb, Self>
fn truecolor(&self, r: u8, g: u8, b: u8) -> FgDynColorDisplay<'_, Rgb, Self>
Sets the foreground color to an RGB value.
sourcefn on_truecolor(&self, r: u8, g: u8, b: u8) -> BgDynColorDisplay<'_, Rgb, Self>
fn on_truecolor(&self, r: u8, g: u8, b: u8) -> BgDynColorDisplay<'_, Rgb, Self>
Sets the background color to an RGB value.