Enum AccessPath 

pub enum AccessPath {
    Param(u32),
    Global(ValueId),
    Deref(Box<AccessPath>),
    Field(Box<AccessPath>, u32),
    Return,
}

Describes a memory access location relative to function parameters or globals.

Access paths form a tree rooted at a base (Param, Global, or Return) with Deref and Field steps descending into pointed-to memory.

Examples

• Param(0) – the first parameter itself
• Deref(Param(0)) – what the first parameter points to
• Field(Deref(Param(0)), 2) – field 2 of the struct pointed to by param 0
• Return – the return value

Variants

Param(u32)

A function parameter by zero-based index.

Global(ValueId)

A global variable identified by its ValueId.

Deref(Box<AccessPath>)

Dereference of an inner access path (one level of pointer indirection).

Field(Box<AccessPath>, u32)

Field access at a given byte offset within a struct.

Return

The function return value.

Implementations

impl AccessPath

pub fn parse(s: &str) -> Result<Self, AccessPathParseError>

Parse an access path from its string representation.

Supported formats:

• "return" – AccessPath::Return
• "param.N" – AccessPath::Param with index N
• "global(0x...)" – AccessPath::Global with hex ID
• "param.0->deref" – AccessPath::Deref wrapping Param(0)
• "param.0->field(8)" – AccessPath::Field with offset 8
• Steps can be chained: "param.0->deref->field(4)->deref"

Errors

Returns AccessPathParseError if the string is empty, contains an unrecognized base or step token, or has invalid numeric indices.

fn parse_base(s: &str) -> Result<Self, AccessPathParseError>

Parse the base token (before any -> steps).

fn parse_step(base: Self, step: &str) -> Result<Self, AccessPathParseError>

Parse a single step token and wrap the current path.

pub fn depth(&self) -> usize

Compute the depth of this access path (number of Deref/Field steps).

Base paths (Param, Global, Return) have depth 0.

pub fn truncate(&self, k: u32) -> Self

Truncate this access path to at most k levels of Deref/Field.

If the path is already within the limit, returns a clone. Otherwise, the deepest steps beyond k are dropped, and the path is terminated at the k-th level.

fn truncate_inner(&self, remaining: usize) -> Self

Recursive truncation helper.

Trait Implementations

impl Clone for AccessPath

fn clone(&self) -> AccessPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AccessPath

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AccessPath

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for AccessPath

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

Formats the value using the given formatter.

impl Hash for AccessPath

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for AccessPath

fn cmp(&self, other: &AccessPath) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for AccessPath

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for AccessPath

fn partial_cmp(&self, other: &AccessPath) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for AccessPath

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for AccessPath

impl StructuralPartialEq for AccessPath