Struct ConstraintCounter

pub struct ConstraintCounter {
    pub num_public_variables: usize,
    pub num_private_variables: usize,
    pub num_constraints: usize,
}

Constraint counter for testing purposes.

Fields

num_public_variables: usize

num_private_variables: usize

num_constraints: usize

Trait Implementations

impl<ConstraintF: Field> ConstraintSystem<ConstraintF> for ConstraintCounter

type Root = ConstraintCounter

Represents the type of the “root” of this constraint system so that nested namespaces can minimize indirection.

fn alloc<F, A, AR>(&mut self, _: A, _: F) -> Result<Variable, SynthesisError>

where F: FnOnce() -> Result<ConstraintF, SynthesisError>, A: FnOnce() -> AR, AR: AsRef<str>,

Allocate a private variable in the constraint system. The provided function is used to determine the assignment of the variable. The given annotation function is invoked in testing contexts in order to derive a unique name for this variable in the current namespace.

fn alloc_input<F, A, AR>( &mut self, _: A, _: F, ) -> Result<Variable, SynthesisError>

where F: FnOnce() -> Result<ConstraintF, SynthesisError>, A: FnOnce() -> AR, AR: AsRef<str>,

Allocate a public variable in the constraint system. The provided function is used to determine the assignment of the variable.

fn enforce<A, AR, LA, LB, LC>(&mut self, _: A, _: LA, _: LB, _: LC)

where A: FnOnce() -> AR, AR: AsRef<str>, LA: FnOnce(LinearCombination<ConstraintF>) -> LinearCombination<ConstraintF>, LB: FnOnce(LinearCombination<ConstraintF>) -> LinearCombination<ConstraintF>, LC: FnOnce(LinearCombination<ConstraintF>) -> LinearCombination<ConstraintF>,

Enforce that A * B = C. The annotation function is invoked in testing contexts in order to derive a unique name for the constraint in the current namespace.

fn push_namespace<NR, N>(&mut self, _: N)

where NR: AsRef<str>, N: FnOnce() -> NR,

Create a new (sub)namespace and enter into it. Not intended for downstream use; use namespace instead.

fn pop_namespace(&mut self)

Exit out of the existing namespace. Not intended for downstream use; use namespace instead.

fn get_root(&mut self) -> &mut Self::Root

Gets the “root” constraint system, bypassing the namespacing. Not intended for downstream use; use namespace instead.

fn num_constraints(&self) -> usize

Output the number of constraints in the system.

fn num_public_variables(&self) -> usize

Output the number of public input variables to the system.

fn num_private_variables(&self) -> usize

Output the number of private input variables to the system.

fn is_in_setup_mode(&self) -> bool

Output whether the constraint system is in the setup mode.

fn one() -> Variable

Return the “one” input variable

fn ns<NR, N>(&mut self, name_fn: N) -> Namespace<'_, F, Self::Root>

where NR: AsRef<str>, N: FnOnce() -> NR,

Begin a namespace for this constraint system.

impl Default for ConstraintCounter

fn default() -> ConstraintCounter

Returns the “default value” for a type.