pub struct TypeEnv { /* private fields */ }Implementations§
Source§impl TypeEnv
impl TypeEnv
pub fn new() -> Self
Sourcepub fn fresh(&mut self, hint: Option<EcoString>) -> TypeVarId
pub fn fresh(&mut self, hint: Option<EcoString>) -> TypeVarId
Allocate a fresh unbound variable and return its handle.
pub fn state(&self, id: TypeVarId) -> &VarState
pub fn is_unbound(&self, id: TypeVarId) -> bool
Sourcepub fn bind(&mut self, id: TypeVarId, ty: Type)
pub fn bind(&mut self, id: TypeVarId, ty: Type)
Bind id to ty. Reserved sentinel ids (ignored/uninferred) are
silently accepted: they unify with anything without storing anything.
Sourcepub fn shallow_resolve(&self, ty: &Type) -> Type
pub fn shallow_resolve(&self, ty: &Type) -> Type
Follow a Type::Var chain one step at a time until we reach either
an unbound variable or a non-Var type.
Sourcepub fn resolve(&self, ty: &Type) -> Type
pub fn resolve(&self, ty: &Type) -> Type
Deep resolve: chase Type::Var chains, substitute every bound var with
its chased value, and recurse into composites. Unbound vars (including
reserved sentinel ids like IGNORED/UNINFERRED) are preserved as-is.
Used both during inference and as the post-inference freeze pass.
Sourcepub fn occurs(&self, id: TypeVarId, ty: &Type) -> bool
pub fn occurs(&self, id: TypeVarId, ty: &Type) -> bool
Occurs check: does id appear anywhere inside ty (following Var
chains but stopping at unbound Vars)?
Sourcepub fn begin_speculation(&mut self) -> Speculation
pub fn begin_speculation(&mut self) -> Speculation
Begin a speculative region. Caller holds the returned handle and
passes it back to end_speculation with the region’s outcome.
Sourcepub fn end_speculation(&mut self, spec: Speculation, is_err: bool)
pub fn end_speculation(&mut self, spec: Speculation, is_err: bool)
End a speculative region. If is_err, revert all bindings made
during the region. Otherwise, either commit them (no enclosing
region) or append them to the enclosing region’s log (so it can
still revert them if it fails).
Trait Implementations§
Auto Trait Implementations§
impl Freeze for TypeEnv
impl RefUnwindSafe for TypeEnv
impl Send for TypeEnv
impl Sync for TypeEnv
impl Unpin for TypeEnv
impl UnsafeUnpin for TypeEnv
impl UnwindSafe for TypeEnv
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§impl<D> OwoColorize for D
impl<D> OwoColorize for D
Source§fn 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
Source§fn 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
Source§fn black(&self) -> FgColorDisplay<'_, Black, Self>
fn black(&self) -> FgColorDisplay<'_, Black, Self>
Change the foreground color to black
Source§fn on_black(&self) -> BgColorDisplay<'_, Black, Self>
fn on_black(&self) -> BgColorDisplay<'_, Black, Self>
Change the background color to black
Source§fn red(&self) -> FgColorDisplay<'_, Red, Self>
fn red(&self) -> FgColorDisplay<'_, Red, Self>
Change the foreground color to red
Source§fn on_red(&self) -> BgColorDisplay<'_, Red, Self>
fn on_red(&self) -> BgColorDisplay<'_, Red, Self>
Change the background color to red
Source§fn green(&self) -> FgColorDisplay<'_, Green, Self>
fn green(&self) -> FgColorDisplay<'_, Green, Self>
Change the foreground color to green
Source§fn on_green(&self) -> BgColorDisplay<'_, Green, Self>
fn on_green(&self) -> BgColorDisplay<'_, Green, Self>
Change the background color to green
Source§fn yellow(&self) -> FgColorDisplay<'_, Yellow, Self>
fn yellow(&self) -> FgColorDisplay<'_, Yellow, Self>
Change the foreground color to yellow
Source§fn on_yellow(&self) -> BgColorDisplay<'_, Yellow, Self>
fn on_yellow(&self) -> BgColorDisplay<'_, Yellow, Self>
Change the background color to yellow
Source§fn blue(&self) -> FgColorDisplay<'_, Blue, Self>
fn blue(&self) -> FgColorDisplay<'_, Blue, Self>
Change the foreground color to blue
Source§fn on_blue(&self) -> BgColorDisplay<'_, Blue, Self>
fn on_blue(&self) -> BgColorDisplay<'_, Blue, Self>
Change the background color to blue
Source§fn magenta(&self) -> FgColorDisplay<'_, Magenta, Self>
fn magenta(&self) -> FgColorDisplay<'_, Magenta, Self>
Change the foreground color to magenta
Source§fn on_magenta(&self) -> BgColorDisplay<'_, Magenta, Self>
fn on_magenta(&self) -> BgColorDisplay<'_, Magenta, Self>
Change the background color to magenta
Source§fn purple(&self) -> FgColorDisplay<'_, Magenta, Self>
fn purple(&self) -> FgColorDisplay<'_, Magenta, Self>
Change the foreground color to purple
Source§fn on_purple(&self) -> BgColorDisplay<'_, Magenta, Self>
fn on_purple(&self) -> BgColorDisplay<'_, Magenta, Self>
Change the background color to purple
Source§fn cyan(&self) -> FgColorDisplay<'_, Cyan, Self>
fn cyan(&self) -> FgColorDisplay<'_, Cyan, Self>
Change the foreground color to cyan
Source§fn on_cyan(&self) -> BgColorDisplay<'_, Cyan, Self>
fn on_cyan(&self) -> BgColorDisplay<'_, Cyan, Self>
Change the background color to cyan
Source§fn white(&self) -> FgColorDisplay<'_, White, Self>
fn white(&self) -> FgColorDisplay<'_, White, Self>
Change the foreground color to white
Source§fn on_white(&self) -> BgColorDisplay<'_, White, Self>
fn on_white(&self) -> BgColorDisplay<'_, White, Self>
Change the background color to white
Source§fn default_color(&self) -> FgColorDisplay<'_, Default, Self>
fn default_color(&self) -> FgColorDisplay<'_, Default, Self>
Change the foreground color to the terminal default
Source§fn on_default_color(&self) -> BgColorDisplay<'_, Default, Self>
fn on_default_color(&self) -> BgColorDisplay<'_, Default, Self>
Change the background color to the terminal default
Source§fn bright_black(&self) -> FgColorDisplay<'_, BrightBlack, Self>
fn bright_black(&self) -> FgColorDisplay<'_, BrightBlack, Self>
Change the foreground color to bright black
Source§fn on_bright_black(&self) -> BgColorDisplay<'_, BrightBlack, Self>
fn on_bright_black(&self) -> BgColorDisplay<'_, BrightBlack, Self>
Change the background color to bright black
Source§fn bright_red(&self) -> FgColorDisplay<'_, BrightRed, Self>
fn bright_red(&self) -> FgColorDisplay<'_, BrightRed, Self>
Change the foreground color to bright red
Source§fn on_bright_red(&self) -> BgColorDisplay<'_, BrightRed, Self>
fn on_bright_red(&self) -> BgColorDisplay<'_, BrightRed, Self>
Change the background color to bright red
Source§fn bright_green(&self) -> FgColorDisplay<'_, BrightGreen, Self>
fn bright_green(&self) -> FgColorDisplay<'_, BrightGreen, Self>
Change the foreground color to bright green
Source§fn on_bright_green(&self) -> BgColorDisplay<'_, BrightGreen, Self>
fn on_bright_green(&self) -> BgColorDisplay<'_, BrightGreen, Self>
Change the background color to bright green
Source§fn bright_yellow(&self) -> FgColorDisplay<'_, BrightYellow, Self>
fn bright_yellow(&self) -> FgColorDisplay<'_, BrightYellow, Self>
Change the foreground color to bright yellow
Source§fn on_bright_yellow(&self) -> BgColorDisplay<'_, BrightYellow, Self>
fn on_bright_yellow(&self) -> BgColorDisplay<'_, BrightYellow, Self>
Change the background color to bright yellow
Source§fn bright_blue(&self) -> FgColorDisplay<'_, BrightBlue, Self>
fn bright_blue(&self) -> FgColorDisplay<'_, BrightBlue, Self>
Change the foreground color to bright blue
Source§fn on_bright_blue(&self) -> BgColorDisplay<'_, BrightBlue, Self>
fn on_bright_blue(&self) -> BgColorDisplay<'_, BrightBlue, Self>
Change the background color to bright blue
Source§fn bright_magenta(&self) -> FgColorDisplay<'_, BrightMagenta, Self>
fn bright_magenta(&self) -> FgColorDisplay<'_, BrightMagenta, Self>
Change the foreground color to bright magenta
Source§fn on_bright_magenta(&self) -> BgColorDisplay<'_, BrightMagenta, Self>
fn on_bright_magenta(&self) -> BgColorDisplay<'_, BrightMagenta, Self>
Change the background color to bright magenta
Source§fn bright_purple(&self) -> FgColorDisplay<'_, BrightMagenta, Self>
fn bright_purple(&self) -> FgColorDisplay<'_, BrightMagenta, Self>
Change the foreground color to bright purple
Source§fn on_bright_purple(&self) -> BgColorDisplay<'_, BrightMagenta, Self>
fn on_bright_purple(&self) -> BgColorDisplay<'_, BrightMagenta, Self>
Change the background color to bright purple
Source§fn bright_cyan(&self) -> FgColorDisplay<'_, BrightCyan, Self>
fn bright_cyan(&self) -> FgColorDisplay<'_, BrightCyan, Self>
Change the foreground color to bright cyan
Source§fn on_bright_cyan(&self) -> BgColorDisplay<'_, BrightCyan, Self>
fn on_bright_cyan(&self) -> BgColorDisplay<'_, BrightCyan, Self>
Change the background color to bright cyan
Source§fn bright_white(&self) -> FgColorDisplay<'_, BrightWhite, Self>
fn bright_white(&self) -> FgColorDisplay<'_, BrightWhite, Self>
Change the foreground color to bright white
Source§fn on_bright_white(&self) -> BgColorDisplay<'_, BrightWhite, Self>
fn on_bright_white(&self) -> BgColorDisplay<'_, BrightWhite, Self>
Change the background color to bright white
Source§fn bold(&self) -> BoldDisplay<'_, Self>
fn bold(&self) -> BoldDisplay<'_, Self>
Make the text bold
Source§fn dimmed(&self) -> DimDisplay<'_, Self>
fn dimmed(&self) -> DimDisplay<'_, Self>
Make the text dim
Source§fn italic(&self) -> ItalicDisplay<'_, Self>
fn italic(&self) -> ItalicDisplay<'_, Self>
Make the text italicized
Source§fn underline(&self) -> UnderlineDisplay<'_, Self>
fn underline(&self) -> UnderlineDisplay<'_, Self>
Make the text underlined
Source§fn blink(&self) -> BlinkDisplay<'_, Self>
fn blink(&self) -> BlinkDisplay<'_, Self>
Make the text blink
Source§fn blink_fast(&self) -> BlinkFastDisplay<'_, Self>
fn blink_fast(&self) -> BlinkFastDisplay<'_, Self>
Make the text blink (but fast!)
Source§fn reversed(&self) -> ReversedDisplay<'_, Self>
fn reversed(&self) -> ReversedDisplay<'_, Self>
Swap the foreground and background colors
Hide the text
Source§fn strikethrough(&self) -> StrikeThroughDisplay<'_, Self>
fn strikethrough(&self) -> StrikeThroughDisplay<'_, Self>
Cross out the text
Source§fn 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 moreSource§fn 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 moreSource§fn 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.
Source§fn 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.
Source§fn 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.
Source§fn 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.