Enum PsValue 

pub enum PsValue {
    Null,
    Mark,
    DictMark,
    Bool(bool),
    Int(i64),
    Real(f64),
    Name(NameId),
    String {
        entity: EntityId,
        start: u32,
        len: u32,
    },
    Array {
        entity: EntityId,
        start: u32,
        len: u32,
    },
    PackedArray {
        entity: EntityId,
        start: u32,
        len: u32,
    },
    Dict(EntityId),
    Operator(OpCode),
    File(EntityId),
    Save(SaveLevel),
    FontID(i32),
    Gstate(u32),
    Stopped,
    Loop(EntityId),
    HardReturn,
    DictEnd(EntityId),
    ExecArray {
        entity: EntityId,
        start: u32,
        len: u32,
        pos: u32,
    },
}

The value payload of a PostScript object.

Variants

Null

Mark

DictMark

Dict mark from << — distinguished from Mark so ] only matches [-marks.

Bool(bool)

Int(i64)

A PostScript integer.

64-bit, matching Ghostscript. PLRM Appendix B’s 32-bit range is stated as a limit “typical of PostScript implementations from Adobe Systems” running “on 32-bit machines”, which “do not necessarily apply to all PostScript implementations” — not a conformance requirement. 32 bits breaks the standard LCG idiom (seed 1103515245 mul 12345 add 2147483648 mod) that PostScript programs use for pseudo-randomness: the product overflows, promotes to Real, and mod then raises typecheck. Widening the fallback is not an option — the product needs 55 bits and f64 carries 53, so the sequence would silently diverge from every other interpreter.

Costs nothing: Real(f64) already forces an 8-byte payload.

Real(f64)

Name(NameId)

String

Fields

entity: EntityId

start: u32

len: u32

Array

Fields

entity: EntityId

start: u32

len: u32

PackedArray

Fields

entity: EntityId

start: u32

len: u32

Dict(EntityId)

Operator(OpCode)

File(EntityId)

Save(SaveLevel)

FontID(i32)

Gstate(u32)

Gstate object (index into Context.gstate_store)

Stopped

Loop(EntityId)

HardReturn

DictEnd(EntityId)

Marker that conditionally pops the dict stack when reached (used by resource operators to clean up after dispatching to PS-defined category procedures). Carries the expected entity so we only pop if it’s still on top — the PS procedure may have already called end.

ExecArray

Procedure cursor on the exec stack — tracks position within a procedure being executed. The eval loop advances pos one element at a time.

Fields

entity: EntityId

start: u32

len: u32

pos: u32

Trait Implementations

impl Clone for PsValue

fn clone(&self) -> PsValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PsValue

impl Debug for PsValue

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

Formats the value using the given formatter.

impl PartialEq for PsValue

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PsValue