Enum stack_graphs::paths::PathResolutionError

pub enum PathResolutionError {
    EmptyScopeStack,
    EmptySymbolStack,
    IncompatibleScopeStackVariables,
    IncompatibleSymbolStackVariables,
    IncorrectFile,
    IncorrectPoppedSymbol,
    IncorrectSourceNode,
    MissingAttachedScopeList,
    ScopeStackUnsatisfied,
    SymbolStackUnsatisfied,
    UnboundSymbolStackVariable,
    UnboundScopeStackVariable,
    UnexpectedAttachedScopeList,
    UnknownAttachedScope,
}

Errors that can occur during the path resolution process.

Variants

EmptyScopeStack

The path contains a jump to scope node, but there are no scopes on the scope stack to jump to.

EmptySymbolStack

The path contains a pop symbol or pop scoped symbol node, but there are no symbols on the symbol stack to pop off.

IncompatibleScopeStackVariables

The partial path contains multiple references to a scope stack variable, and those references can’t unify on a single scope stack.

IncompatibleSymbolStackVariables

The partial path contains multiple references to a symbol stack variable, and those references can’t unify on a single symbol stack.

IncorrectFile

The partial path contains edges from multiple files.

IncorrectPoppedSymbol

The path contains a pop symbol or pop scoped symbol node, but the symbol at the top of the symbol stack does not match.

IncorrectSourceNode

The path contains an edge whose source node does not match the sink node of the preceding edge.

MissingAttachedScopeList

The path contains a pop scoped symbol node, but the symbol at the top of the symbol stack does not have an attached scope list to pop off.

ScopeStackUnsatisfied

The path’s scope stack does not satisfy the partial path’s scope stack precondition.

SymbolStackUnsatisfied

The path’s symbol stack does not satisfy the partial path’s symbol stack precondition.

UnboundSymbolStackVariable

The partial path’s postcondition references a symbol stack variable that isn’t present in the precondition.

UnboundScopeStackVariable

The partial path’s postcondition references a scope stack variable that isn’t present in the precondition.

UnexpectedAttachedScopeList

The path contains a pop symbol node, but the symbol at the top of the symbol stack has an attached scope list that we weren’t expecting.

UnknownAttachedScope

A push scoped symbol node referes to an exported scope node that doesn’t exist.

Trait Implementations

impl Debug for PathResolutionError

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

Formats the value using the given formatter.