errors.go

package pal

import (
	"errors"
)

// Error variables used throughout the package
var (
	// ErrServiceNotFound is returned when a requested service is not found in the container.
	// This typically happens when trying to Invoke a service that hasn't been registered.
	ErrServiceNotFound = errors.New("service not found")

	// ErrMultipleServicesFoundByInterface is returned when multiple services are found in the container by interface.
	ErrMultipleServicesFoundByInterface = errors.New("multiple services found by interface")

	// ErrServiceInitFailed is returned when a service fails to initialize.
	// This can happen during container initialization if a service's Init method returns an error.
	ErrServiceInitFailed = errors.New("service initialization failed")

	// ErrServiceInvalid is returned when a service is invalid.
	// This can happen when a service doesn't implement a required interface or when type assertions fail.
	ErrServiceInvalid = errors.New("service invalid")

	// ErrServiceInvalidArgumentsCount is returned when a service is called with incorrect number of arguments.
	ErrServiceInvalidArgumentsCount = errors.New("service called with incorrect number of arguments")

	// ErrServiceInvalidArgumentType is returned when a service is called with incorrect argument type.
	ErrServiceInvalidArgumentType = errors.New("service called with incorrect argument type")

	// ErrFactoryServiceDependency is returned when a service with a factory service dependency is invoked.
	ErrFactoryServiceDependency = errors.New("factory service cannot be a dependency of another service")

	// ErrServiceInvalidCast is returned when a service is cast to a different type.
	ErrServiceInvalidCast = errors.New("failed to cast service to the expected type")

	// ErrInvokerIsNotInContext is returned when a context passed to Invoke does not contain a Pal instance.
	ErrInvokerIsNotInContext = errors.New("invoker is not in context")

	// ErrInvalidTag is returned when a tag is invalid.
	ErrInvalidTag = errors.New("invalid tag")

	// ErrNotAnInterface is returned when a type is not an interface.
	ErrNotAnInterface = errors.New("not an interface")
)

type PanicError struct {
	error
	backtrace string
}

func (e *PanicError) Backtrace() string {
	return e.backtrace
}