types

package
v0.0.0-...-97dcd37 Latest Latest
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 Go to latest Published: Jul 13, 2018 License: Apache-2.0 Imports: 18 Imported by: 0

Documentation

Overview

Package types contains the types, traits, and utilities common to all components of expression handling.

Index

Constants

View Source 
const (
	// Int constants used for comparison results.
	IntZero   = Int(0)
	IntOne    = Int(1)
	IntNegOne = Int(-1)
)

Variables

View Source 
var (
	// BoolType singleton.
	BoolType = NewTypeValue("bool",
		traits.ComparerType,
		traits.NegatorType)

	False = Bool(false)
	True  = Bool(true)
)
View Source 
var (
	// NullType singleton.
	NullType = NewTypeValue("null_type")
	// NullValue singleton.
	NullValue = Null(structpb.NullValue_NULL_VALUE)
)
View Source 
var (
	// BytesType singleton.
	BytesType = NewTypeValue("bytes",
		traits.AdderType,
		traits.ComparerType,
		traits.SizerType)
)
View Source 
var (
	// DoubleType singleton.
	DoubleType = NewTypeValue("double",
		traits.AdderType,
		traits.ComparerType,
		traits.DividerType,
		traits.MultiplierType,
		traits.NegatorType,
		traits.SubtractorType)
)
View Source 
var (
	// DurationType singleton.
	DurationType = NewTypeValue("google.protobuf.Duration",
		traits.AdderType,
		traits.ComparerType,
		traits.NegatorType,
		traits.ReceiverType,
		traits.SubtractorType)
)
View Source 
var (
	// DynType singleton.
	DynType = NewTypeValue("dyn")
)
View Source 
var (
	// ErrType singleton.
	ErrType = NewTypeValue("error")
)
View Source 
var (
	// IntType singleton.
	IntType = NewTypeValue("int",
		traits.AdderType,
		traits.ComparerType,
		traits.DividerType,
		traits.ModderType,
		traits.MultiplierType,
		traits.NegatorType,
		traits.SubtractorType)
)
View Source 
var (
	// IteratorType singleton.
	IteratorType = NewTypeValue("iterator", traits.IteratorType)
)
View Source 
var (
	// ListType singleton.
	ListType = NewTypeValue("list",
		traits.AdderType,
		traits.ContainerType,
		traits.IndexerType,
		traits.IterableType,
		traits.SizerType)
)
View Source 
var (
	// MapType singleton.
	MapType = NewTypeValue("map",
		traits.ContainerType,
		traits.IndexerType,
		traits.IterableType,
		traits.SizerType)
)
View Source 
var (
	// StringType singleton.
	StringType = NewTypeValue("string",
		traits.AdderType,
		traits.ComparerType,
		traits.MatcherType,
		traits.SizerType)
)
View Source 
var (
	// TimestampType singleton.
	TimestampType = NewTypeValue("google.protobuf.Timestamp",
		traits.AdderType,
		traits.ComparerType,
		traits.ReceiverType,
		traits.SubtractorType)
)
View Source 
var (
	// TypeType is the type of a TypeValue.
	TypeType = NewTypeValue("type")
)
View Source 
var (
	// UintType singleton.
	UintType = NewTypeValue("uint",
		traits.AdderType,
		traits.ComparerType,
		traits.DividerType,
		traits.ModderType,
		traits.MultiplierType,
		traits.SubtractorType)
)
View Source 
var (
	// UnknownType singleton.
	UnknownType = NewTypeValue("unknown")
)

Functions

func IsBool 

func IsBool(elem interface{}) bool

IsBool returns whether the input ref.Value or ref.Type is equal to BoolType.

func IsDyn 

func IsDyn(elem interface{}) bool

IsDyn indicates whether the input ref.Value or ref.Type is equal to DynType.

func IsError 

func IsError(elem interface{}) bool

IsError returns whether the input element ref.Type or ref.Value is equal to the ErrType singleton.

func IsUnknown 

func IsUnknown(elem interface{}) bool

IsUnknown returns whether the element ref.Type or ref.Value is equal to the UnknownType singleton.

func IsUnknownOrError 

func IsUnknownOrError(elem interface{}) bool

IsUnknownOrError returns whether the input element ref.Type or ref.Value is an ErrType or UnknonwType.

func NativeToValue 

func NativeToValue(value interface{}) ref.Value

func NewDynamicList 

func NewDynamicList(value interface{}) traits.Lister

NewDynamicList returns a traits.Lister with heterogenous elements. value should be an array of "native" types, i.e. any type that NativeToValue() can convert to a ref.Value.

func NewDynamicMap 

func NewDynamicMap(value interface{}) traits.Mapper

NewDynamicMap returns a traits.Mapper value with dynamic key, value pairs.

func NewJsonList 

func NewJsonList(l *structpb.ListValue) traits.Lister

NewJsonList creates a traits.Lister implementation backed by a JSON list that has been encoded in protocol buffer form.

func NewJsonStruct 

func NewJsonStruct(st *structpb.Struct) traits.Mapper

func NewObject 

func NewObject(value proto.Message) ref.Value

NewObject returns an object based on a proto.Message value which handles conversion between protobuf type values and expression type values. Objects support indexing and iteration.

func NewProvider 

func NewProvider(types ...proto.Message) ref.TypeProvider

NewProvider accepts a list of proto message instances and returns a type provider which can create new instances of the provided message or any message that proto depends upon in its FileDescriptor.

func NewStringList 

func NewStringList(elems []string) traits.Lister

NewStringList returns a traits.Lister containing only strings.

func NewValueList 

func NewValueList(elems []ref.Value) traits.Lister

NewValueList returns a traits.Lister with ref.Value elements.

Types

type Bool 

type Bool bool

Bool type that implements ref.Value and supports comparison and negation.

func (Bool) Compare 

func (b Bool) Compare(other ref.Value) ref.Value

func (Bool) ConvertToNative 

func (b Bool) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Bool) ConvertToType 

func (b Bool) ConvertToType(typeVal ref.Type) ref.Value

func (Bool) Equal 

func (b Bool) Equal(other ref.Value) ref.Value

func (Bool) Negate 

func (b Bool) Negate() ref.Value

func (Bool) Type 

func (b Bool) Type() ref.Type

func (Bool) Value 

func (b Bool) Value() interface{}

type Bytes 

type Bytes []byte

Bytes type that implements ref.Value and supports add, compare, and size operations.

func (Bytes) Add 

func (b Bytes) Add(other ref.Value) ref.Value

func (Bytes) Compare 

func (b Bytes) Compare(other ref.Value) ref.Value

func (Bytes) ConvertToNative 

func (b Bytes) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Bytes) ConvertToType 

func (b Bytes) ConvertToType(typeVal ref.Type) ref.Value

func (Bytes) Equal 

func (b Bytes) Equal(other ref.Value) ref.Value

func (Bytes) Size 

func (b Bytes) Size() ref.Value

func (Bytes) Type 

func (b Bytes) Type() ref.Type

func (Bytes) Value 

func (b Bytes) Value() interface{}

type Double 

type Double float64

Double type that implements ref.Value, comparison, and mathematical operations.

func (Double) Add 

func (d Double) Add(other ref.Value) ref.Value

func (Double) Compare 

func (d Double) Compare(other ref.Value) ref.Value

func (Double) ConvertToNative 

func (d Double) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Double) ConvertToType 

func (d Double) ConvertToType(typeVal ref.Type) ref.Value

func (Double) Divide 

func (d Double) Divide(other ref.Value) ref.Value

func (Double) Equal 

func (d Double) Equal(other ref.Value) ref.Value

func (Double) Multiply 

func (d Double) Multiply(other ref.Value) ref.Value

func (Double) Negate 

func (d Double) Negate() ref.Value

func (Double) Subtract 

func (d Double) Subtract(subtrahend ref.Value) ref.Value

func (Double) Type 

func (d Double) Type() ref.Type

func (Double) Value 

func (d Double) Value() interface{}

type Duration 

type Duration struct {
	*dpb.Duration
}

Duration type that implements ref.Value and supports add, compare, negate, and subtract operators. This type is also a receiver which means it can participate in dispatch to receiver functions.

func (Duration) Add 

func (d Duration) Add(other ref.Value) ref.Value

func (Duration) Compare 

func (d Duration) Compare(other ref.Value) ref.Value

func (Duration) ConvertToNative 

func (d Duration) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Duration) ConvertToType 

func (d Duration) ConvertToType(typeVal ref.Type) ref.Value

func (Duration) Equal 

func (d Duration) Equal(other ref.Value) ref.Value

func (Duration) Negate 

func (d Duration) Negate() ref.Value

func (Duration) Receive 

func (d Duration) Receive(function string, overload string, args []ref.Value) ref.Value

func (Duration) Subtract 

func (d Duration) Subtract(subtrahend ref.Value) ref.Value

func (Duration) Type 

func (d Duration) Type() ref.Type

func (Duration) Value 

func (d Duration) Value() interface{}

type Err 

type Err struct {
	// contains filtered or unexported fields
}

Err type which extends the built-in go error and implements ref.Value.

func NewErr 

func NewErr(format string, args ...interface{}) *Err

func (*Err) ConvertToNative 

func (e *Err) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (*Err) ConvertToType 

func (e *Err) ConvertToType(typeVal ref.Type) ref.Value

func (*Err) Equal 

func (e *Err) Equal(other ref.Value) ref.Value

func (*Err) String 

func (e *Err) String() string

func (*Err) Type 

func (e *Err) Type() ref.Type

func (*Err) Value 

func (e *Err) Value() interface{}

type Int 

type Int int64

Int type that implements ref.Value as well as comparison and math operators.

func (Int) Add 

func (i Int) Add(other ref.Value) ref.Value

func (Int) Compare 

func (i Int) Compare(other ref.Value) ref.Value

func (Int) ConvertToNative 

func (i Int) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Int) ConvertToType 

func (i Int) ConvertToType(typeVal ref.Type) ref.Value

func (Int) Divide 

func (i Int) Divide(other ref.Value) ref.Value

func (Int) Equal 

func (i Int) Equal(other ref.Value) ref.Value

func (Int) Modulo 

func (i Int) Modulo(other ref.Value) ref.Value

func (Int) Multiply 

func (i Int) Multiply(other ref.Value) ref.Value

func (Int) Negate 

func (i Int) Negate() ref.Value

func (Int) Subtract 

func (i Int) Subtract(subtrahend ref.Value) ref.Value

func (Int) Type 

func (i Int) Type() ref.Type

func (Int) Value 

func (i Int) Value() interface{}

type Null 

type Null structpb.NullValue

Null type implementation.

func (Null) ConvertToNative 

func (n Null) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Null) ConvertToType 

func (n Null) ConvertToType(typeVal ref.Type) ref.Value

func (Null) Equal 

func (n Null) Equal(other ref.Value) ref.Value

func (Null) Type 

func (n Null) Type() ref.Type

func (Null) Value 

func (n Null) Value() interface{}

type String 

type String string

String type implementation which supports addition, comparison, matching, and size functions.

func (String) Add 

func (s String) Add(other ref.Value) ref.Value

func (String) Compare 

func (s String) Compare(other ref.Value) ref.Value

func (String) ConvertToNative 

func (s String) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (String) ConvertToType 

func (s String) ConvertToType(typeVal ref.Type) ref.Value

func (String) Equal 

func (s String) Equal(other ref.Value) ref.Value

func (String) Match 

func (s String) Match(pattern ref.Value) ref.Value

func (String) Size 

func (s String) Size() ref.Value

func (String) Type 

func (s String) Type() ref.Type

func (String) Value 

func (s String) Value() interface{}

type Timestamp 

type Timestamp struct {
	*tpb.Timestamp
}

Timestamp type implementation which supports add, compare, and subtract operations. Timestamps are also capable of participating in dynamic function dispatch to instance methods.

func (Timestamp) Add 

func (t Timestamp) Add(other ref.Value) ref.Value

func (Timestamp) Compare 

func (t Timestamp) Compare(other ref.Value) ref.Value

func (Timestamp) ConvertToNative 

func (t Timestamp) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Timestamp) ConvertToType 

func (t Timestamp) ConvertToType(typeVal ref.Type) ref.Value

func (Timestamp) Equal 

func (t Timestamp) Equal(other ref.Value) ref.Value

func (Timestamp) Receive 

func (t Timestamp) Receive(function string, overload string, args []ref.Value) ref.Value

func (Timestamp) Subtract 

func (t Timestamp) Subtract(subtrahend ref.Value) ref.Value

func (Timestamp) Type 

func (t Timestamp) Type() ref.Type

func (Timestamp) Value 

func (t Timestamp) Value() interface{}

type TypeValue 

type TypeValue struct {
	// contains filtered or unexported fields
}

TypeValue is an instance of a Value that describes a value's type.

func NewObjectTypeValue 

func NewObjectTypeValue(name string) *TypeValue

NewObjectTypeValue returns a *TypeValue based on the input name, which is annotated with the traits relevant to all objects.

func NewTypeValue 

func NewTypeValue(name string, traits ...int) *TypeValue

NewTypeValue returns *TypeValue which is both a ref.Type and ref.Value.

func (*TypeValue) ConvertToNative 

func (t *TypeValue) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (*TypeValue) ConvertToType 

func (t *TypeValue) ConvertToType(typeVal ref.Type) ref.Value

func (*TypeValue) Equal 

func (t *TypeValue) Equal(other ref.Value) ref.Value

func (*TypeValue) HasTrait 

func (t *TypeValue) HasTrait(trait int) bool

func (*TypeValue) String 

func (t *TypeValue) String() string

func (*TypeValue) Type 

func (t *TypeValue) Type() ref.Type

func (*TypeValue) TypeName 

func (t *TypeValue) TypeName() string

func (*TypeValue) Value 

func (t *TypeValue) Value() interface{}

type Uint 

type Uint uint64

Uint type implementation which supports comparison and math operators.

func (Uint) Add 

func (i Uint) Add(other ref.Value) ref.Value

func (Uint) Compare 

func (i Uint) Compare(other ref.Value) ref.Value

func (Uint) ConvertToNative 

func (i Uint) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Uint) ConvertToType 

func (i Uint) ConvertToType(typeVal ref.Type) ref.Value

func (Uint) Divide 

func (i Uint) Divide(other ref.Value) ref.Value

func (Uint) Equal 

func (i Uint) Equal(other ref.Value) ref.Value

func (Uint) Modulo 

func (i Uint) Modulo(other ref.Value) ref.Value

func (Uint) Multiply 

func (i Uint) Multiply(other ref.Value) ref.Value

func (Uint) Subtract 

func (i Uint) Subtract(subtrahend ref.Value) ref.Value

func (Uint) Type 

func (i Uint) Type() ref.Type

func (Uint) Value 

func (i Uint) Value() interface{}

type Unknown 

type Unknown []int64

Unknown type implementation which collects expression ids which caused the current value to become unknown.

func (Unknown) ConvertToNative 

func (u Unknown) ConvertToNative(typeDesc reflect.Type) (interface{}, error)

func (Unknown) ConvertToType 

func (u Unknown) ConvertToType(typeVal ref.Type) ref.Value

func (Unknown) Equal 

func (u Unknown) Equal(other ref.Value) ref.Value

func (Unknown) Type 

func (u Unknown) Type() ref.Type

func (Unknown) Value 

func (u Unknown) Value() interface{}

Source Files

View all Source files

Directories

Path Synopsis
Package pb reflects over protocol buffer descriptors to generate objects that simplify type, enum, and field lookup.
 Package pb reflects over protocol buffer descriptors to generate objects that simplify type, enum, and field lookup.
Package ref contains the reference interfaces used throughout the types components.
 Package ref contains the reference interfaces used throughout the types components.
Package traits defines interfaces that a type may implement to participate in operator overloads and function dispatch.
 Package traits defines interfaces that a type may implement to participate in operator overloads and function dispatch.

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