Lowering

haloumi_lowering

Trait Lowering 

Source 
pub trait Lowering: ExprLowering {
    // Required methods
    fn generate_constraint(
        &self,
        op: CmpOp,
        lhs: &Self::CellOutput,
        rhs: &Self::CellOutput,
    ) -> Result<()>;
    fn num_constraints(&self) -> usize;
    fn generate_comment(&self, s: String) -> Result<()>;
    fn generate_assume_deterministic(&self, slot: Slot) -> Result<()>;
    fn generate_call(
        &self,
        name: &str,
        selectors: &[Self::CellOutput],
        outputs: &[Slot],
    ) -> Result<()>;
    fn generate_assert(&self, expr: &Self::CellOutput) -> Result<()>;
    fn generate_post_condition(&self, expr: &Self::CellOutput) -> Result<()>;

    // Provided method
    fn checked_generate_constraint(
        &self,
        op: CmpOp,
        lhs: &Self::CellOutput,
        rhs: &Self::CellOutput,
    ) -> Result<()> { ... }
}
Expand description

Defines the interface code generators expose for generating code in their corresponding IR.

Required Methods§

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fn generate_constraint( &self, op: CmpOp, lhs: &Self::CellOutput, rhs: &Self::CellOutput, ) -> Result<()>

Generates a constraint.

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fn num_constraints(&self) -> usize

Returns the number of generated constraints.

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fn generate_comment(&self, s: String) -> Result<()>

Generates IR representing a comment with the given text.

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fn generate_assume_deterministic(&self, slot: Slot) -> Result<()>

Generates an statement that hints that the given Slot must be assumed to be deterministic.

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fn generate_call( &self, name: &str, selectors: &[Self::CellOutput], outputs: &[Slot], ) -> Result<()>

Generates a call to another group.

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fn generate_assert(&self, expr: &Self::CellOutput) -> Result<()>

Generates an assertion using the given expression.

How exactly this assertion is represented is backend dependant.

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fn generate_post_condition(&self, expr: &Self::CellOutput) -> Result<()>

Generates an assertion using the given expression that is treated as a post-condition.

How exactly this assertion is represented is backend dependant.

Provided Methods§

Source

fn checked_generate_constraint( &self, op: CmpOp, lhs: &Self::CellOutput, rhs: &Self::CellOutput, ) -> Result<()>

Attempts to generate a constraint and fails if it couldn’t be generated.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§