functional

Documentation

Overview

Package functional provides evaluation of function expressions.

Index

• Variables
• func EvalApplyFn(applyFn ast.ApplyFn, subst ast.Subst) (ast.Constant, error)
• func EvalAtom(a ast.Atom, subst ast.Subst) (ast.Atom, error)
• func EvalBaseTermPair(left, right ast.BaseTerm, subst ast.Subst) (ast.BaseTerm, ast.BaseTerm, error)
• func EvalExpr(b ast.BaseTerm, subst ast.Subst) (ast.BaseTerm, error)
• func EvalExprs(args []ast.BaseTerm, subst ast.Subst) ([]ast.Constant, error)
• func EvalExprsBase(args []ast.BaseTerm, subst ast.Subst) ([]ast.BaseTerm, error)
• func EvalNumericApplyFn(applyFn ast.ApplyFn, subst ast.Subst) (ast.Constant, error)
• func EvalReduceFn(reduceFn ast.ApplyFn, rows []ast.ConstSubstList) (ast.Constant, error)

Variables

var (
	// ErrDivisionByZero indicates a division by zero runtime error.
	ErrDivisionByZero = errors.New("div by zero")
)

Functions

func EvalApplyFn

func EvalApplyFn(applyFn ast.ApplyFn, subst ast.Subst) (ast.Constant, error)

EvalApplyFn evaluates a built-in function application.

func EvalAtom

func EvalAtom(a ast.Atom, subst ast.Subst) (ast.Atom, error)

EvalAtom returns an atom with any apply-expressions evaluated.

func EvalBaseTermPair

func EvalBaseTermPair(left, right ast.BaseTerm, subst ast.Subst) (ast.BaseTerm, ast.BaseTerm, error)

EvalBaseTermPair evaluates a pair of base terms.

func EvalExpr

func EvalExpr(b ast.BaseTerm, subst ast.Subst) (ast.BaseTerm, error)

EvalExpr evaluates any apply-expression in b and applies subst.

func EvalExprs

func EvalExprs(args []ast.BaseTerm, subst ast.Subst) ([]ast.Constant, error)

EvalExprs evaluates any apply-expressions in args and applies subst.

func EvalExprsBase

func EvalExprsBase(args []ast.BaseTerm, subst ast.Subst) ([]ast.BaseTerm, error)

EvalExprsBase evaluates any apply-expressions in args and applies subst.

func EvalNumericApplyFn

func EvalNumericApplyFn(applyFn ast.ApplyFn, subst ast.Subst) (ast.Constant, error)

EvalNumericApplyFn evaluates a numeric built-in function application.

func EvalReduceFn

func EvalReduceFn(reduceFn ast.ApplyFn, rows []ast.ConstSubstList) (ast.Constant, error)

EvalReduceFn evaluates a combiner (reduce) function.