Function zeroValueExpr

cel/inlining.go:192–211

zeroValueExpr creates an expression representing the empty or zero value for the given type Note: bytes, lists, maps, and strings are supported via the `SizerType` trait.

(ctx *OptimizerContext, t *Type)

// zeroValueExpr creates an expression representing the empty or zero value for the given type
// Note: bytes, lists, maps, and strings are supported via the `SizerType` trait.
func zeroValueExpr(ctx *OptimizerContext, t *Type) (ast.Expr, bool) {
	// Note: bytes, strings, lists, and maps are covered by the "sizer-type" check
	switch t.Kind() {
	case types.BoolKind:
		return ctx.NewLiteral(types.False), true
	case types.DoubleKind:
		return ctx.NewLiteral(types.Double(0)), true
	case types.DurationKind:
		return ctx.NewCall(overloads.TypeConvertDuration, ctx.NewLiteral(types.String("0s"))), true
	case types.IntKind:
		return ctx.NewLiteral(types.IntZero), true
	case types.TimestampKind:
		return ctx.NewCall(overloads.TypeConvertTimestamp, ctx.NewLiteral(types.Int(0))), true
	case types.StructKind:
		return ctx.NewStruct(t.TypeName(), []ast.EntryExpr{}), true
	case types.UintKind:
		return ctx.NewLiteral(types.Uint(0)), true
	}
	return nil, false
}

// isBindable indicates whether the inlined type can be used within a cel.bind() if the expression
// being replaced occurs within a presence test. Value types with a size() method or field selection