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PathResolutionContext

Struct PathResolutionContext 

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pub struct PathResolutionContext { /* private fields */ }
Expand description

Runtime paths needed to resolve platform-independent policy selectors.

The context is supplied by a harness or a platform backend. Constructing it never reads the filesystem, follows symlinks, or infers a workspace.

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impl PathResolutionContext

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pub fn new() -> Self

Creates an empty context.

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pub fn with_root(self, path: impl Into<PathBuf>) -> Result<Self, PolicyError>

Adds one absolute system root represented by the runtime environment.

POSIX backends normally provide /. Windows backends may provide more than one drive or UNC root. The context never discovers these paths on its own.

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pub fn with_workspace_root( self, path: impl Into<PathBuf>, ) -> Result<Self, PolicyError>

Adds one absolute workspace root.

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pub fn with_minimal_path( self, path: impl Into<PathBuf>, ) -> Result<Self, PolicyError>

Adds one absolute path required by ordinary process execution.

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pub fn with_executable_root( self, path: impl Into<PathBuf>, ) -> Result<Self, PolicyError>

Adds one absolute runtime root whose executable files may be mapped by a backend that supports this capability.

This declaration is intentionally separate from readable filesystem roots. Reading a runtime file does not by itself authorize the native loader to map it executable.

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pub fn with_tmpdir(self, path: impl Into<PathBuf>) -> Result<Self, PolicyError>

Sets the platform temporary directory.

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pub fn with_slash_tmp( self, path: impl Into<PathBuf>, ) -> Result<Self, PolicyError>

Sets the conventional /tmp directory when the platform provides it.

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pub fn with_current_directory( self, path: impl Into<PathBuf>, ) -> Result<Self, PolicyError>

Sets the absolute runtime current directory used for command cwd resolution and for commands that otherwise inherit their cwd.

This is runtime input only; the context never reads the directory or changes the process cwd.

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pub fn workspace_roots(&self) -> &[PathBuf]

Returns the configured workspace roots.

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pub fn root_paths(&self) -> &[PathBuf]

Returns the absolute system roots supplied by the runtime.

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pub fn minimal_paths(&self) -> &[PathBuf]

Returns the configured minimal runtime paths.

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pub fn executable_roots(&self) -> &[PathBuf]

Returns runtime roots declared for native executable mapping.

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pub fn tmpdir(&self) -> Option<&Path>

Returns the configured platform temporary directory.

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pub fn slash_tmp(&self) -> Option<&Path>

Returns the configured conventional /tmp directory.

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pub fn current_directory(&self) -> Option<&Path>

Returns the absolute runtime directory used for relative command cwd values and for commands that inherit their cwd.

Trait Implementations§

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impl Clone for PathResolutionContext

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PathResolutionContext

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for PathResolutionContext

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Eq for PathResolutionContext

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impl PartialEq for PathResolutionContext

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for PathResolutionContext

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.