Method AddDeclVar

repl/evaluator.go:641–650

AddDeclVar declares a variable in the environment but doesn't register an expr with it. This allows planning to succeed, but with no value for the variable at runtime.

(name string, typeHint *envlib.TypeDesc)

// AddDeclVar declares a variable in the environment but doesn't register an expr with it.
// This allows planning to succeed, but with no value for the variable at runtime.
func (e *Evaluator) AddDeclVar(name string, typeHint *envlib.TypeDesc) error {
	ctx := e.ctx.copy()
	ctx.addLetVar(name, "", typeHint)
	err := updateContextPlans(ctx, e.env)
	if err != nil {
		return err
	}
	e.ctx = *ctx
	return nil
}

// AddDeclFn declares a function in the environment but doesn't register an expr with it.
// This allows planning to succeed, but with no value for the function at runtime.