value

package
v0.0.2 Latest Latest
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 Go to latest Published: May 3, 2021 License: MIT Imports: 10 Imported by: 175

Documentation

Overview

Value package defines the core value types (string, int, etc) for the qlbridge package, mostly used to provide common interfaces instead of reflection for virtual machine.

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrConversion             = fmt.Errorf("Error converting type")
	ErrConversionNotSupported = fmt.Errorf("Unsupported conversion")
)
View Source 
var (
	EmptyStruct = struct{}{}

	NilValueVal         = NewNilValue()
	BoolValueTrue       = BoolValue{/* contains filtered or unexported fields */}
	BoolValueFalse      = BoolValue{/* contains filtered or unexported fields */}
	NumberNaNValue      = NewNumberValue(math.NaN())
	EmptyStringValue    = NewStringValue("")
	EmptyStringsValue   = NewStringsValue(nil)
	EmptyMapValue       = NewMapValue(nil)
	EmptyMapStringValue = NewMapStringValue(make(map[string]string))
	EmptyMapIntValue    = NewMapIntValue(make(map[string]int64))
	EmptyMapNumberValue = NewMapNumberValue(make(map[string]float64))
	EmptyMapTimeValue   = NewMapTimeValue(make(map[string]time.Time))
	EmptyMapBoolValue   = NewMapBoolValue(make(map[string]bool))
	NilStructValue      = NewStructValue(nilStruct)
	TimeZeroValue       = NewTimeValue(time.Time{})
	ErrValue            = NewErrorValue(fmt.Errorf(""))
)

Functions

func BoolStringVal 

func BoolStringVal(sv string) bool

func Equal 

func Equal(l, r Value) (bool, error)

Equal function compares equality after detecting type. error if it could not evaluate

func IsBool 

func IsBool(sv string) bool

is this boolean string?

func StringToFloat64 

func StringToFloat64(s string) (float64, bool)

StringToFloat64 converts a string to a float includes replacement of $ and other monetary format identifiers. May return math.NaN

func StringToTimeAnchor 

func StringToTimeAnchor(val string, anchor time.Time) (time.Time, bool)

StringToTimeAnchor Convert a string type to a time if possible. If "now-3d" then use date-anchoring ie if prefix = 'now'.

func ValueToBool 

func ValueToBool(val Value) (bool, bool)

ValueToBool Convert a value type to a bool if possible

func ValueToFloat64 

func ValueToFloat64(val Value) (float64, bool)

ValueToFloat64 Convert a value type to a float64 if possible

func ValueToInt 

func ValueToInt(val Value) (int, bool)

ValueToInt Convert a value type to a int if possible

func ValueToInt64 

func ValueToInt64(val Value) (int64, bool)

ValueToInt64 Convert a value type to a int64 if possible

func ValueToString 

func ValueToString(val Value) (string, bool)

ValueToString convert all scalar values to their go string.

func ValueToStrings 

func ValueToStrings(val Value) ([]string, bool)

ValueToStrings convert all scalar values to their go []string.

func ValueToTime 

func ValueToTime(val Value) (time.Time, bool)

ValueToTime Convert a value type to a time if possible

func ValueToTimeAnchor 

func ValueToTimeAnchor(val Value, anchor time.Time) (time.Time, bool)

ValueToTimeAnchor given a value, and a time anchor, conver to time. use "now-3d" anchoring if has prefix "now".

Types

type BoolValue 

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

func NewBoolValue 

func NewBoolValue(v bool) BoolValue

func (BoolValue) Err 

func (m BoolValue) Err() bool

func (BoolValue) MarshalJSON 

func (m BoolValue) MarshalJSON() ([]byte, error)

func (BoolValue) Nil 

func (m BoolValue) Nil() bool

func (BoolValue) ToString 

func (m BoolValue) ToString() string

func (BoolValue) Type 

func (m BoolValue) Type() ValueType

func (BoolValue) Val 

func (m BoolValue) Val() bool

func (BoolValue) Value 

func (m BoolValue) Value() interface{}

type ByteSliceValue 

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

func NewByteSliceValue 

func NewByteSliceValue(v []byte) ByteSliceValue

func (ByteSliceValue) Err 

func (m ByteSliceValue) Err() bool

func (ByteSliceValue) Len 

func (m ByteSliceValue) Len() int

func (ByteSliceValue) MarshalJSON 

func (m ByteSliceValue) MarshalJSON() ([]byte, error)

func (ByteSliceValue) Nil 

func (m ByteSliceValue) Nil() bool

func (ByteSliceValue) ToString 

func (m ByteSliceValue) ToString() string

func (ByteSliceValue) Type 

func (m ByteSliceValue) Type() ValueType

func (ByteSliceValue) Val 

func (m ByteSliceValue) Val() []byte

func (ByteSliceValue) Value 

func (m ByteSliceValue) Value() interface{}

type ErrorValue 

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

func NewErrorValue 

func NewErrorValue(v error) ErrorValue

func NewErrorValuef 

func NewErrorValuef(v string, args ...interface{}) ErrorValue

func (ErrorValue) Err 

func (m ErrorValue) Err() bool

func (ErrorValue) Error 

func (m ErrorValue) Error() string

ErrorValues implement Go's error interface so they can easily cross the VM/Go boundary.

func (ErrorValue) MarshalJSON 

func (m ErrorValue) MarshalJSON() ([]byte, error)

func (ErrorValue) Nil 

func (m ErrorValue) Nil() bool

func (ErrorValue) ToString 

func (m ErrorValue) ToString() string

func (ErrorValue) Type 

func (m ErrorValue) Type() ValueType

func (ErrorValue) Val 

func (m ErrorValue) Val() error

func (ErrorValue) Value 

func (m ErrorValue) Value() interface{}

type IntValue 

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

func NewIntNil 

func NewIntNil() IntValue

func NewIntValue 

func NewIntValue(v int64) IntValue

func (IntValue) Err 

func (m IntValue) Err() bool

func (IntValue) Float 

func (m IntValue) Float() float64

func (IntValue) Int 

func (m IntValue) Int() int64

func (IntValue) MarshalJSON 

func (m IntValue) MarshalJSON() ([]byte, error)

func (IntValue) Nil 

func (m IntValue) Nil() bool

func (IntValue) NumberValue 

func (m IntValue) NumberValue() NumberValue

func (IntValue) ToString 

func (m IntValue) ToString() string

func (IntValue) Type 

func (m IntValue) Type() ValueType

func (IntValue) Val 

func (m IntValue) Val() int64

func (IntValue) Value 

func (m IntValue) Value() interface{}

type JsonValue 

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

func NewJsonValue 

func NewJsonValue(v json.RawMessage) JsonValue

func (JsonValue) Err 

func (m JsonValue) Err() bool

func (JsonValue) MarshalJSON 

func (m JsonValue) MarshalJSON() ([]byte, error)

func (JsonValue) Nil 

func (m JsonValue) Nil() bool

func (JsonValue) ToString 

func (m JsonValue) ToString() string

func (JsonValue) Type 

func (m JsonValue) Type() ValueType

func (JsonValue) Val 

func (m JsonValue) Val() interface{}

func (JsonValue) Value 

func (m JsonValue) Value() interface{}

type Map 

type Map interface {
	json.Marshaler
	Len() int
	MapValue() MapValue
	Get(key string) (Value, bool)
}

Map interface

type MapBoolValue 

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

func NewMapBoolValue 

func NewMapBoolValue(v map[string]bool) MapBoolValue

func (MapBoolValue) Err 

func (m MapBoolValue) Err() bool

func (MapBoolValue) Get 

func (m MapBoolValue) Get(key string) (Value, bool)

func (MapBoolValue) Len 

func (m MapBoolValue) Len() int

func (MapBoolValue) MapValue 

func (m MapBoolValue) MapValue() MapValue

func (MapBoolValue) MarshalJSON 

func (m MapBoolValue) MarshalJSON() ([]byte, error)

func (MapBoolValue) Nil 

func (m MapBoolValue) Nil() bool

func (MapBoolValue) SliceValue 

func (m MapBoolValue) SliceValue() []Value

func (MapBoolValue) ToString 

func (m MapBoolValue) ToString() string

func (MapBoolValue) Type 

func (m MapBoolValue) Type() ValueType

func (MapBoolValue) Val 

func (m MapBoolValue) Val() map[string]bool

func (MapBoolValue) Value 

func (m MapBoolValue) Value() interface{}

type MapIntValue 

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

func NewMapIntValue 

func NewMapIntValue(v map[string]int64) MapIntValue

func (MapIntValue) Err 

func (m MapIntValue) Err() bool

func (MapIntValue) Get 

func (m MapIntValue) Get(key string) (Value, bool)

func (MapIntValue) Len 

func (m MapIntValue) Len() int

func (MapIntValue) MapFloat 

func (m MapIntValue) MapFloat() map[string]float64

func (MapIntValue) MapInt 

func (m MapIntValue) MapInt() map[string]int64

func (MapIntValue) MapValue 

func (m MapIntValue) MapValue() MapValue

func (MapIntValue) MarshalJSON 

func (m MapIntValue) MarshalJSON() ([]byte, error)

func (MapIntValue) Nil 

func (m MapIntValue) Nil() bool

func (MapIntValue) SliceValue 

func (m MapIntValue) SliceValue() []Value

func (MapIntValue) ToString 

func (m MapIntValue) ToString() string

func (MapIntValue) Type 

func (m MapIntValue) Type() ValueType

func (MapIntValue) Val 

func (m MapIntValue) Val() map[string]int64

func (MapIntValue) Value 

func (m MapIntValue) Value() interface{}

type MapNumberValue 

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

func NewMapNumberValue 

func NewMapNumberValue(v map[string]float64) MapNumberValue

func (MapNumberValue) Err 

func (m MapNumberValue) Err() bool

func (MapNumberValue) Get 

func (m MapNumberValue) Get(key string) (Value, bool)

func (MapNumberValue) Len 

func (m MapNumberValue) Len() int

func (MapNumberValue) MapInt 

func (m MapNumberValue) MapInt() map[string]int64

func (MapNumberValue) MapValue 

func (m MapNumberValue) MapValue() MapValue

func (MapNumberValue) MarshalJSON 

func (m MapNumberValue) MarshalJSON() ([]byte, error)

func (MapNumberValue) Nil 

func (m MapNumberValue) Nil() bool

func (MapNumberValue) SliceValue 

func (m MapNumberValue) SliceValue() []Value

func (MapNumberValue) ToString 

func (m MapNumberValue) ToString() string

func (MapNumberValue) Type 

func (m MapNumberValue) Type() ValueType

func (MapNumberValue) Val 

func (m MapNumberValue) Val() map[string]float64

func (MapNumberValue) Value 

func (m MapNumberValue) Value() interface{}

type MapStringValue 

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

func NewMapStringValue 

func NewMapStringValue(v map[string]string) MapStringValue

func (MapStringValue) Err 

func (m MapStringValue) Err() bool

func (MapStringValue) Get 

func (m MapStringValue) Get(key string) (Value, bool)

func (MapStringValue) Len 

func (m MapStringValue) Len() int

func (MapStringValue) MapBool 

func (m MapStringValue) MapBool() MapBoolValue

func (MapStringValue) MapInt 

func (m MapStringValue) MapInt() MapIntValue

func (MapStringValue) MapNumber 

func (m MapStringValue) MapNumber() MapNumberValue

func (MapStringValue) MapValue 

func (m MapStringValue) MapValue() MapValue

func (MapStringValue) MarshalJSON 

func (m MapStringValue) MarshalJSON() ([]byte, error)

func (MapStringValue) Nil 

func (m MapStringValue) Nil() bool

func (MapStringValue) SliceValue 

func (m MapStringValue) SliceValue() []Value

func (MapStringValue) ToString 

func (m MapStringValue) ToString() string

func (MapStringValue) Type 

func (m MapStringValue) Type() ValueType

func (MapStringValue) Val 

func (m MapStringValue) Val() map[string]string

func (MapStringValue) Value 

func (m MapStringValue) Value() interface{}

type MapTimeValue 

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

func NewMapTimeValue 

func NewMapTimeValue(v map[string]time.Time) MapTimeValue

func (MapTimeValue) Err 

func (m MapTimeValue) Err() bool

func (MapTimeValue) Get 

func (m MapTimeValue) Get(key string) (Value, bool)

func (MapTimeValue) Len 

func (m MapTimeValue) Len() int

func (MapTimeValue) MapInt 

func (m MapTimeValue) MapInt() map[string]int64

func (MapTimeValue) MapValue 

func (m MapTimeValue) MapValue() MapValue

func (MapTimeValue) MarshalJSON 

func (m MapTimeValue) MarshalJSON() ([]byte, error)

func (MapTimeValue) Nil 

func (m MapTimeValue) Nil() bool

func (MapTimeValue) ToString 

func (m MapTimeValue) ToString() string

func (MapTimeValue) Type 

func (m MapTimeValue) Type() ValueType

func (MapTimeValue) Val 

func (m MapTimeValue) Val() map[string]time.Time

func (MapTimeValue) Value 

func (m MapTimeValue) Value() interface{}

type MapValue 

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

func NewMapValue 

func NewMapValue(v map[string]interface{}) MapValue

func (MapValue) Err 

func (m MapValue) Err() bool

func (MapValue) Get 

func (m MapValue) Get(key string) (Value, bool)

func (MapValue) Len 

func (m MapValue) Len() int

func (MapValue) MapFloat 

func (m MapValue) MapFloat() map[string]float64

func (MapValue) MapInt 

func (m MapValue) MapInt() map[string]int64

func (MapValue) MapString 

func (m MapValue) MapString() map[string]string

func (MapValue) MapTime 

func (m MapValue) MapTime() MapTimeValue

func (MapValue) MapValue 

func (m MapValue) MapValue() MapValue

func (MapValue) MarshalJSON 

func (m MapValue) MarshalJSON() ([]byte, error)

func (MapValue) Nil 

func (m MapValue) Nil() bool

func (MapValue) ToString 

func (m MapValue) ToString() string

func (MapValue) Type 

func (m MapValue) Type() ValueType

func (MapValue) Val 

func (m MapValue) Val() map[string]Value

func (MapValue) Value 

func (m MapValue) Value() interface{}

type NilValue 

type NilValue struct{}

func NewNilValue 

func NewNilValue() NilValue

func (NilValue) Err 

func (m NilValue) Err() bool

func (NilValue) MarshalJSON 

func (m NilValue) MarshalJSON() ([]byte, error)

func (NilValue) Nil 

func (m NilValue) Nil() bool

func (NilValue) ToString 

func (m NilValue) ToString() string

func (NilValue) Type 

func (m NilValue) Type() ValueType

func (NilValue) Val 

func (m NilValue) Val() interface{}

func (NilValue) Value 

func (m NilValue) Value() interface{}

type NumberValue 

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

func NewNumberNil 

func NewNumberNil() NumberValue

func NewNumberValue 

func NewNumberValue(v float64) NumberValue

func (NumberValue) Err 

func (m NumberValue) Err() bool

func (NumberValue) Float 

func (m NumberValue) Float() float64

func (NumberValue) Int 

func (m NumberValue) Int() int64

func (NumberValue) MarshalJSON 

func (m NumberValue) MarshalJSON() ([]byte, error)

func (NumberValue) Nil 

func (m NumberValue) Nil() bool

func (NumberValue) ToString 

func (m NumberValue) ToString() string

func (NumberValue) Type 

func (m NumberValue) Type() ValueType

func (NumberValue) Val 

func (m NumberValue) Val() float64

func (NumberValue) Value 

func (m NumberValue) Value() interface{}

type NumericValue 

type NumericValue interface {
	Float() float64
	Int() int64
}

Certain types are Numeric (Ints, Time, Number)

type Slice 

type Slice interface {
	SliceValue() []Value
	Len() int
	json.Marshaler
}

Slices can always return a []Value representation and is meant to be used when iterating over all items in a non-scalar value. Maps return their keys as a slice.

type SliceValue 

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

func NewSliceValues 

func NewSliceValues(v []Value) SliceValue

func NewSliceValuesNative 

func NewSliceValuesNative(iv []interface{}) SliceValue

func (*SliceValue) Append 

func (m *SliceValue) Append(v Value)

func (SliceValue) Err 

func (m SliceValue) Err() bool

func (SliceValue) Len 

func (m SliceValue) Len() int

func (SliceValue) MarshalJSON 

func (m SliceValue) MarshalJSON() ([]byte, error)

func (SliceValue) Nil 

func (m SliceValue) Nil() bool

func (SliceValue) SliceValue 

func (m SliceValue) SliceValue() []Value

func (SliceValue) ToString 

func (m SliceValue) ToString() string

func (SliceValue) Type 

func (m SliceValue) Type() ValueType

func (SliceValue) Val 

func (m SliceValue) Val() []Value

func (SliceValue) Value 

func (m SliceValue) Value() interface{}

func (SliceValue) Values 

func (m SliceValue) Values() []interface{}

type StringValue 

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

func NewStringValue 

func NewStringValue(v string) StringValue

func (StringValue) Err 

func (m StringValue) Err() bool

func (StringValue) IntValue 

func (m StringValue) IntValue() IntValue

func (StringValue) MarshalJSON 

func (m StringValue) MarshalJSON() ([]byte, error)

func (StringValue) Nil 

func (m StringValue) Nil() bool

func (StringValue) NumberValue 

func (m StringValue) NumberValue() NumberValue

func (StringValue) StringsValue 

func (m StringValue) StringsValue() StringsValue

func (StringValue) ToString 

func (m StringValue) ToString() string

func (StringValue) Type 

func (m StringValue) Type() ValueType

func (StringValue) Val 

func (m StringValue) Val() string

func (StringValue) Value 

func (m StringValue) Value() interface{}

type StringsValue 

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

func NewStringsValue 

func NewStringsValue(v []string) StringsValue

func (*StringsValue) Append 

func (m *StringsValue) Append(sv string)

func (StringsValue) Err 

func (m StringsValue) Err() bool

func (StringsValue) IntValue 

func (m StringsValue) IntValue() IntValue

func (StringsValue) Len 

func (m StringsValue) Len() int

func (StringsValue) MarshalJSON 

func (m StringsValue) MarshalJSON() ([]byte, error)

func (StringsValue) Nil 

func (m StringsValue) Nil() bool

func (StringsValue) NumberValue 

func (m StringsValue) NumberValue() NumberValue

func (StringsValue) Set 

func (m StringsValue) Set() map[string]struct{}

func (StringsValue) SliceValue 

func (m StringsValue) SliceValue() []Value

func (StringsValue) Strings 

func (m StringsValue) Strings() []string

func (StringsValue) ToString 

func (m StringsValue) ToString() string

func (StringsValue) Type 

func (m StringsValue) Type() ValueType

func (StringsValue) Val 

func (m StringsValue) Val() []string

func (StringsValue) Value 

func (m StringsValue) Value() interface{}

type StructValue 

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

func NewStructValue 

func NewStructValue(v interface{}) StructValue

func (StructValue) Err 

func (m StructValue) Err() bool

func (StructValue) MarshalJSON 

func (m StructValue) MarshalJSON() ([]byte, error)

func (StructValue) Nil 

func (m StructValue) Nil() bool

func (StructValue) ToString 

func (m StructValue) ToString() string

func (StructValue) Type 

func (m StructValue) Type() ValueType

func (StructValue) Val 

func (m StructValue) Val() interface{}

func (StructValue) Value 

func (m StructValue) Value() interface{}

type TimeValue 

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

func NewTimeValue 

func NewTimeValue(v time.Time) TimeValue

func (TimeValue) Err 

func (m TimeValue) Err() bool

func (TimeValue) Float 

func (m TimeValue) Float() float64

func (TimeValue) Int 

func (m TimeValue) Int() int64

func (TimeValue) MarshalJSON 

func (m TimeValue) MarshalJSON() ([]byte, error)

func (TimeValue) Nil 

func (m TimeValue) Nil() bool

func (TimeValue) Time 

func (m TimeValue) Time() time.Time

func (TimeValue) ToString 

func (m TimeValue) ToString() string

func (TimeValue) Type 

func (m TimeValue) Type() ValueType

func (TimeValue) Val 

func (m TimeValue) Val() time.Time

func (TimeValue) Value 

func (m TimeValue) Value() interface{}

type Value 

type Value interface {
	// Is this a nil/empty?
	// empty string counts as nil, empty slices/maps, nil structs.
	Nil() bool
	// Is this an error, or unable to evaluate from Vm?
	Err() bool
	Value() interface{}
	ToString() string
	Type() ValueType
}

func Cast 

func Cast(valType ValueType, val Value) (Value, error)

Cast a value to given value type

func NewValue 

func NewValue(goVal interface{}) Value

NewValue creates a new Value type from a native Go value.

Defaults to StructValue for unknown types.

type ValueType 

type ValueType uint8

This is the DataType system, ie string, int, etc 

const (
	// Enum values for Type system, DO NOT CHANGE the numbers, do not use iota
	NilType            ValueType = 0
	ErrorType          ValueType = 1
	UnknownType        ValueType = 2
	ValueInterfaceType ValueType = 3 // Is of type Value Interface, ie unknown
	NumberType         ValueType = 10
	IntType            ValueType = 11
	BoolType           ValueType = 12
	TimeType           ValueType = 13
	ByteSliceType      ValueType = 14
	StringType         ValueType = 20
	StringsType        ValueType = 21
	MapValueType       ValueType = 30
	MapIntType         ValueType = 31
	MapStringType      ValueType = 32
	MapNumberType      ValueType = 33
	MapBoolType        ValueType = 34
	MapTimeType        ValueType = 35
	SliceValueType     ValueType = 40
	StructType         ValueType = 50
	JsonType           ValueType = 51
)

func ValueFromString 

func ValueFromString(vt string) ValueType

ValueFromString Given a string, convert to valuetype

func ValueTypeFromString 

func ValueTypeFromString(val string) ValueType

ValueTypeFromString take a string value and infer valuetype Will infer based on the following rules: - If parseable as int, will be int - if not above, and parse bool, is bool - if not above, and parse float, float - if not above, and parse date, date - else string

func ValueTypeFromStringAll 

func ValueTypeFromStringAll(val string) ValueType

ValueTypeFromStringAll take a string value and infer valuetype adding the valid type JSON preferred over raw string.

Will infer based on the following rules: - If parseable as int, will be int - if not above, and parse bool, is bool - if not above, and parse float, float - if not above, and parse date, date - if not above, and appears to be json (doesn't have to be valid) - else string

func (ValueType) IsMap 

func (m ValueType) IsMap() bool

func (ValueType) IsNumeric 

func (m ValueType) IsNumeric() bool

func (ValueType) IsSlice 

func (m ValueType) IsSlice() bool

func (ValueType) String 

func (m ValueType) String() string

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