expr

package
v0.0.0-...-06831c0 Latest Latest
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 Go to latest Published: Dec 18, 2024 License: Apache-2.0 Imports: 26 Imported by: 0

Documentation

Overview

Example (Abs) 
eval(`abs(-3.14)`, nil)

Output:

3.14
Example (Average) 
eval(`average(1, 2, 3, "foo", 10)`, 10.4)

Output:

4
Example (Base64encode) 
eval(`base64encode("foo bar baz_test")`, nil)

Output:

Zm9vIGJhciBiYXpfdGVzdA==
Example (Camelize) 
eval(`camelize("foo bar baz_test")`, nil)

Output:

fooBarBaz_test
Example (CastFloatToInt) 
eval(`int("42.690")`, nil)

Output:

0
Example (CastStringNumberToInt) 
eval(`int("42690")`, nil)

Output:

42690
Example (CastStringToInt) 
eval(`int("abc")`, nil)

Output:

0
Example (Ceil) 
eval(`ceil(3.14)`, nil)

Output:

4
Example (Earliest) 
eval(`earliest(hgp, wfa)`, exampleTimeParams)

Output:

1929-01-06 00:00:00 +0000 UTC
Example (Filter_kv) 
var (
	kv = &KV{value: map[string]string{
		"k1": "v1",
		"k2": "v2",
	}}
	p = map[string]interface{}{
		"kv":   kv,
		"key1": "k1",
		"key2": "k3",
	}
)

eval(`filter(kv, key1, key2)`, p)
fmt.Printf("\nOriginal KV should be %v", kv.value)

Output:

map[k1:v1]
Original KV should be map[k1:v1 k2:v2]
Example (Filter_kvv) 
var (
	kvv = &KVV{value: map[string][]string{
		"k1": {"v1"},
		"k2": {"v2"},
	}}
	p = map[string]interface{}{
		"kv":   kvv,
		"key1": "k1",
		"key2": "k3",
	}
)

eval(`filter(kv, key1, key2)`, p)
fmt.Printf("\nOriginal KVV should be %v", kvv.value)

Output:

map[k1:[v1]]
Original KVV should be map[k1:[v1] k2:[v2]]
Example (Filter_vars) 
var (
	p = map[string]interface{}{
		"vars": &Vars{value: map[string]TypedValue{
			"k1": &String{value: "v1"},
			"k5": &String{value: "v5"},
		}},
		"key1": "k1",
		"key2": "k3",
		"key3": "k5",
	}
)

eval(`toJSON(filter(vars, key1, key2, key3))`, p)

Output:

{"k1":{"@value":"v1","@type":"String"},"k5":{"@value":"v5","@type":"String"}}
Example (Floor) 
eval(`floor(3.14)`, nil)

Output:

3
Example (HasPrefix) 
eval(`hasPrefix("foo bar", "foo ")`, nil)

Output:

true
Example (HasSubstring_caseI) 
eval(`hasSubstring("foo BAR", "o b", false)`, nil)

Output:

true
Example (HasSubstring_caseS) 
eval(`hasSubstring("foo BAR", "o b", true)`, nil)

Output:

false
Example (HasSuffix) 
eval(`hasSuffix("foo bar", "ar")`, nil)

Output:

true
Example (IsEmail) 
eval(`isUrl("example.user+valid@example.tld")`, nil)

Output:

true
Example (IsLeapYear) 
eval(`isLeapYear(ghd)`, exampleTimeParams)

Output:

false
Example (IsUrl) 
eval(`isUrl("http:/example.tld")`, nil)

Output:

false
Example (IsWeekDay) 
eval(`isWeekDay(ghd)`, exampleTimeParams)

Output:

true
Example (Join) 
eval(`join(exploded, ",")`, map[string][]string{"exploded": {"One", "two", "three"}})

Output:

One,two,three
Example (Kv_toJSON) 
var (
	p = map[string]interface{}{
		"kv": Must(NewKV(
			&KV{value: map[string]string{
				"k1": "v1",
				"k2": "v2",
			}},
		)),
	}
)

eval(`toJSON(kv)`, p)

Output:

{"k1":"v1","k2":"v2"}
Example (Latest) 
eval(`latest(ghd, wfa)`, exampleTimeParams)

Output:

1993-02-02 06:00:00 -0500 -0500
Example (Ln) 
eval(`pow(2, 3)`, nil)

Output:

8
Example (Log) 
eval(`log(100)`, nil)

Output:

2
Example (Longest) 
eval(`longest("foo", "foobar")`, nil)

Output:

foobar
Example (Match) 
eval(`match("foo bar baz_test", "^foo\\s.*$")`, nil)

Output:

true
Example (Max) 
eval(`max(2, 1, 3)`, nil)

Output:

3
Example (Merge_kv) 
var (
	kv = &KV{}
	p  = map[string]interface{}{
		"kv": kv,
		"foo": &KV{value: map[string]string{
			"k1": "v1",
		}},
		"bar": &KV{value: map[string]string{
			"k2": "v2",
		}},
	}
)

eval(`merge(kv, foo, bar)`, p)
fmt.Printf("\nOriginal KV should be %v", kv.value)

Output:

map[k1:v1 k2:v2]
Original KV should be map[]
Example (Merge_kvv) 
var (
	kvv = &KVV{}
	p   = map[string]interface{}{
		"kvv": kvv,
		"foo": &KVV{value: map[string][]string{
			"k1": {"v1"},
		}},
		"bar": &KVV{value: map[string][]string{
			"k1": {"v11"},
			"k2": {"v2"},
		}},
	}
)

eval(`merge(kvv, foo, bar)`, p)
fmt.Printf("\nOriginal KVV should be %v", kvv.value)

Output:

map[k1:[v1 v11] k2:[v2]]
Original KVV should be map[]
Example (Merge_vars) 
var (
	p = map[string]interface{}{
		"vars": &Vars{},
		"foo": &Vars{value: map[string]TypedValue{
			"k1": &String{value: "v1"},
		}},
		"bar": &Vars{value: map[string]TypedValue{
			"k2": &String{value: "v2"},
		}},
	}
)

eval(`toJSON(merge(foo, bar))`, p)

Output:

{"k1":{"@value":"v1","@type":"String"},"k2":{"@value":"v2","@type":"String"}}
Example (Min) 
eval(`min(2, 1, 3)`, nil)

Output:

1
Example (ModDate) 
eval(`modDate(ghd, "5")`, exampleTimeParams)

Output:

1993-02-07 06:00:00 -0500 -0500
Example (ModMonth) 
eval(`modMonth(ghd, "1")`, exampleTimeParams)

Output:

1993-03-02 06:00:00 -0500 -0500
Example (ModTime) 
eval(`modTime(ghd, "+30m")`, exampleTimeParams)

Output:

1993-02-02 06:30:00 -0500 -0500
Example (ModWeek) 
eval(`modWeek(ghd, "1")`, exampleTimeParams)

Output:

1993-02-09 06:00:00 -0500 -0500
Example (ModYear) 
eval(`modYear(ghd, "5")`, exampleTimeParams)

Output:

1998-02-02 06:00:00 -0500 -0500
Example (Omit_kv) 
var (
	kv = &KV{value: map[string]string{
		"k1": "v1",
		"k2": "v2",
		"k3": "v3",
	}}
	p = map[string]interface{}{
		"kv":   kv,
		"key1": "k1",
		"key2": "k3",
	}
)

eval(`omit(kv, key1, key2)`, p)
fmt.Printf("\nOriginal KV should be %v", kv.value)

Output:

map[k2:v2]
Original KV should be map[k1:v1 k2:v2 k3:v3]
Example (Omit_kvv) 
var (
	kvv = &KVV{value: map[string][]string{
		"k1": {"v1"},
		"k2": {"v2"},
		"k3": {"v3"},
	}}
	p = map[string]interface{}{
		"kvv":  kvv,
		"key1": "k1",
		"key2": "k3",
	}
)

eval(`omit(kvv, key1, key2)`, p)
fmt.Printf("\nOriginal KVV should be %v", kvv.value)

Output:

map[k2:[v2]]
Original KVV should be map[k1:[v1] k2:[v2] k3:[v3]]
Example (Omit_vars) 
var (
	p = map[string]interface{}{
		"vars": &Vars{value: map[string]TypedValue{
			"k1": &String{value: "v1"},
			"k2": &String{value: "v2"},
			"k3": &String{value: "v3"},
		}},
		"key1": "k1",
		"key2": "k3",
	}
)

eval(`toJSON(omit(vars, key1, key2))`, p)

Output:

{"k2":{"@value":"v2","@type":"String"}}
Example (ParseDate) 
eval(`date("1993-02-02 06:00:00+01:10")`, nil)

Output:

1993-02-02 06:00:00 +0110 +0110
Example (ParseDuration) 
eval(`parseDuration("2h")`, nil)

Output:

2h0m0s
Example (ParseISODate) 
eval(`date("1993-02-02T06:00:00-05:00")`, nil)

Output:

1993-02-02 06:00:00 -0500 -0500
Example (Pop_float) 
eval(`pop(floatArr)`, vals)

Output:

69.42
Example (Pop_int) 
eval(`pop(intArr)`, vals)

Output:

<nil>
Example (Pop_string) 
eval(`pop(stringArr)`, vals)

Output:

first
Example (Push_bool) 
eval(`push(boolArr, boolVal)`, vals)

Output:

[true true false false]
Example (Push_float) 
eval(`push(floatArr, 3.14)`, vals)

Output:

[69.42 3.14]
Example (Push_int) 
eval(`push(intArr, intVal)`, vals)

Output:

[42]
Example (Push_string) 
eval(`push(stringArr, stringVal)`, vals)

Output:

[first foobar]
Example (RandomWithSingleInput) 
eval(`max(random(6), 7)`, nil)

Output:

7
Example (RandomWithTwoInput) 
eval(`min(random(2, 6), 1)`, nil)

Output:

1
Example (Repeat) 
eval(`repeat("duran ", c)`, map[string]interface{}{"c": 2})

Output:

duran duran
Example (Replace_all) 
eval(`replace("foobar baz", "ba", "BA", c)`, map[string]interface{}{"c": -1})

Output:

fooBAr BAz
Example (Replace_first) 
eval(`replace("foobar baz", "ba", "BA", c)`, map[string]interface{}{"c": 1})

Output:

fooBAr baz
Example (Round) 
eval(`round(3.14,1)`, nil)

Output:

3.1
Example (Set_kv) 
var (
	kv = &KV{}
	p  = map[string]interface{}{
		"kv":    kv,
		"key":   "k1",
		"value": Must(NewString("v11")),
	}
)

eval(`set(kv, key, value)`, p)
fmt.Printf("\nOriginal KV should be %v", kv.value)

Output:

map[k1:v11]
Original KV should be map[]
Example (Set_kvv) 
var (
	kvv = &KVV{}
	p   = map[string]interface{}{
		"kvv":   kvv,
		"key":   "foo",
		"value": Must(NewString("bar")),
	}
)

eval(`set(kvv, key, value)`, p)
fmt.Printf("\nOriginal KVV should be %v", kvv.value)

Output:

map[foo:[bar]]
Original KVV should be map[]
Example (Set_vars) 
var (
	p = map[string]interface{}{
		"vars":  &Vars{},
		"key":   "foo",
		"value": &String{value: "foo"},
	}
)

eval(`toJSON(set(vars, key, value))`, p)

Output:

{"foo":{"@value":"foo","@type":"String"}}
Example (Shorten_char) 
eval(`shorten("foo bar 1337, this is. test one - or three", "char", c)`, map[string]int{"c": 22})

Output:

foo bar 1337, this is …
Example (Shorten_word) 
eval(`shorten("foo bar 1337, this is. test one - or three", "word", c)`, map[string]int{"c": 3})

Output:

foo bar 1337 …
Example (Shortest) 
eval(`shortest("foo", "foobar")`, nil)

Output:

foo
Example (SimpleExpression) 
eval(`40 + 2`, nil)

Output:

42
Example (Snakify) 
eval(`snakify("foo bar baz_test")`, nil)

Output:

foo_bar_baz_test
Example (Sort_string_asc) 
eval(`sort(strArr, false)`, vals)

Output:

[1 2 3 5]
Example (Sort_string_desc) 
eval(`sort(strArr, true)`, vals)

Output:

[5 3 2 1]
Example (Split) 
eval(`split("This will be split in:2-parts", ":")`, nil)

Output:

[This will be split in 2-parts]
Example (Sqrt) 
eval(`sqrt(16)`, nil)

Output:

4
Example (Strftime) 
eval(`strftime(ghd, "%Y-%m-%dT%H:%M:%S")`, exampleTimeParams)

Output:

1993-02-02T06:00:00
Example (StrftimeWithModTime) 
eval(`strftime(modTime(ghd, "+30m"), "%Y-%m-%dT%H:%M:%S")`, exampleTimeParams)

Output:

1993-02-02T06:30:00
Example (StrftimeWithStringValue) 
eval(`strftime("1993-02-02T06:30:00", "%Y-%m-%dT%H:%M:%S")`, exampleTimeParams)

Output:

1993-02-02T06:30:00
Example (Sub) 
eval(`sub(hgp, ghd)`, exampleTimeParams)

Output:

321627600000
Example (SubErrorCheck) 
eval(`sub(ghd, hgp)`, exampleTimeParams)

Output:

error: can not evaluate sub(ghd, hgp): expecting 2nd input to be less than 1st input
Example (Substring) 
eval(`substring("foo bar baz_test", start, end)`, map[string]interface{}{"start": 2, "end": -1})

Output:

o bar baz_test
Example (Substring_endOverflow) 
eval(`substring("foo bar baz_test", start, end)`, map[string]interface{}{"start": 2, "end": 100})

Output:

o bar baz_test
Example (Substring_highStart) 
eval(`substring("foo", start, end)`, map[string]interface{}{"start": 3, "end": -1})

Output:
Example (Substring_withEnd) 
eval(`substring("foo bar baz_test", start, end)`, map[string]interface{}{"start": 2, "end": 4})

Output:

o b
Example (Sum) 
eval(`sum(1, 2, "foo", 3.4, 4, "3")`, 10.4)

Output:

13.4
Example (Title) 
eval(`title("foo bAR")`, nil)

Output:

Foo bAR
Example (ToJSON) 
var (
	p = map[string]interface{}{
		"vars": Must(NewVars(
			&Vars{value: map[string]TypedValue{
				"k1": &String{value: "v1"},
				"k2": &String{value: "v2"},
			}},
		)),
	}
)

eval(`toJSON(vars)`, p)

Output:

{"k1":{"@value":"v1","@type":"String"},"k2":{"@value":"v2","@type":"String"}}
Example (ToLower) 
eval(`toLower("FOO")`, nil)

Output:

foo
Example (ToUpper) 
eval(`toUpper("foo")`, nil)

Output:

FOO
Example (Trim) 
eval(`trim(" foo ")`, nil)

Output:

foo
Example (TrimLeft) 
eval(`trimLeft(" foo ", " ")`, nil)

Output:

foo
Example (TrimRight) 
eval(`trimRight(" foo ", " ")`, nil)

Output:

foo
Example (Unix) 
eval(`strftime(ghd, "%L")`, exampleTimeParams)

Output:

728650800
Example (Untitle) 
eval(`untitle("Foo Bar")`, nil)

Output:

foo Bar

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func AllFunctions 

func AllFunctions() []gval.Language

func ArrayFunctions 

func ArrayFunctions() []gval.Language

func Assign 

func Assign(base TypedValue, path string, val TypedValue) (err error)

func CastToAny 

func CastToAny(val interface{}) (interface{}, error)

func CastToBoolean 

func CastToBoolean(val interface{}) (out bool, err error)

func CastToBytes 

func CastToBytes(val interface{}) (out []byte, err error)

func CastToDateTime 

func CastToDateTime(val interface{}) (out *time.Time, err error)

func CastToDuration 

func CastToDuration(val interface{}) (out time.Duration, err error)

func CastToFloat 

func CastToFloat(val interface{}) (out float64, err error)

func CastToHandle 

func CastToHandle(val interface{}) (string, error)

func CastToHttpRequest 

func CastToHttpRequest(val interface{}) (out *h.Request, err error)

func CastToID 

func CastToID(val interface{}) (out uint64, err error)

func CastToInteger 

func CastToInteger(val interface{}) (out int64, err error)

func CastToKV 

func CastToKV(val interface{}) (out map[string]string, err error)

func CastToKVV 

func CastToKVV(val interface{}) (out map[string][]string, err error)

func CastToMeta 

func CastToMeta(val interface{}) (out map[string]any, err error)

func CastToReader 

func CastToReader(val interface{}) (out io.Reader, err error)

func CastToString 

func CastToString(val interface{}) (out string, err error)

func CastToStringSlice 

func CastToStringSlice(val interface{}) (out []string, err error)

func CastToUnsignedInteger 

func CastToUnsignedInteger(val interface{}) (out uint64, err error)

func CastToUrl 

func CastToUrl(val interface{}) (out *url.URL, err error)

func CastToVars 

func CastToVars(val interface{}) (out map[string]TypedValue, err error)

func GenericFunctions 

func GenericFunctions() []gval.Language

func Has 

func Has(arr interface{}, vv ...interface{}) (b bool, err error)

has finds any occurrence of the values in slice or key in a map

func JsonFunctions 

func JsonFunctions() []gval.Language

func KvFunctions 

func KvFunctions() []gval.Language

func NewGvalParser 

func NewGvalParser() *gvalParser

func NumericFunctions 

func NumericFunctions() []gval.Language

func Parser 

func Parser() gval.Language

Parser returns global parser instance

func Path 

func Path(p string) (out *exprPath)

Path initializes a new exprPath helper to efficiently traverse the path

func PathBase 

func PathBase(path string) string

func ResolveTypes 

func ResolveTypes(rt resolvableType, resolver func(typ string) Type) error

func StringFunctions 

func StringFunctions() []gval.Language

func TimeFunctions 

func TimeFunctions() []gval.Language

func UntypedValue 

func UntypedValue(val interface{}) interface{}

Types

type Any 

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

Any is an expression type, wrapper for interface{} type

func NewAny 

func NewAny(val interface{}) (*Any, error)

NewAny creates new instance of Any expression type

func (*Any) Assign 

func (t *Any) Assign(val interface{}) error

Assign new value to Any

value is first passed through CastToAny

func (Any) Cast 

func (Any) Cast(val interface{}) (TypedValue, error)

Cast converts value to interface{}

func (*Any) Clone 

func (v *Any) Clone() (out TypedValue, err error)

func (*Any) Get 

func (t *Any) Get() interface{}

Get return underlying value on Any

func (*Any) GetValue 

func (t *Any) GetValue() interface{}

GetValue returns underlying value on Any

func (Any) Type 

func (Any) Type() string

Type return type name

type Array 

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

Array is an expression type, wrapper for []TypedValue type

func NewArray 

func NewArray(val interface{}) (*Array, error)

NewArray creates new instance of Array expression type

func (*Array) Assign 

func (t *Array) Assign(val interface{}) error

Assign new value to Array

value is first passed through CastToArray

func (Array) Cast 

func (Array) Cast(val interface{}) (TypedValue, error)

Cast converts value to []TypedValue

func (*Array) Clone 

func (v *Array) Clone() (out TypedValue, err error)

func (*Array) Decode 

func (t *Array) Decode(dst reflect.Value) error

func (*Array) Get 

func (t *Array) Get() interface{}

Get return underlying value on Array

func (*Array) GetValue 

func (t *Array) GetValue() []TypedValue

GetValue returns underlying value on Array

func (Array) Has 

func (t Array) Has(k string) bool

Select is field accessor for *types.Record

Similar to SelectGVal but returns typed values

func (*Array) IsEmpty 

func (t *Array) IsEmpty() bool

func (Array) MarshalJSON 

func (t Array) MarshalJSON() ([]byte, error)

func (*Array) Push 

func (t *Array) Push(v TypedValue)

Push appends value to array

func (Array) Select 

func (t Array) Select(k string) (TypedValue, error)

Select is field accessor for *types.Array

Similar to SelectGVal but returns typed values

func (Array) SelectGVal 

func (t Array) SelectGVal(ctx context.Context, k string) (interface{}, error)

SelectGVal implements gval.Selector requirements

It allows gval lib to access Record's underlying value (*types.Array) and it's fields

func (*Array) Slice 

func (t *Array) Slice() []interface{}

func (Array) Type 

func (Array) Type() string

Type return type name

type Assigner 

type Assigner interface {
	Assign(interface{}) error
}

type Boolean 

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

Boolean is an expression type, wrapper for bool type

func NewBoolean 

func NewBoolean(val interface{}) (*Boolean, error)

NewBoolean creates new instance of Boolean expression type

func (*Boolean) Assign 

func (t *Boolean) Assign(val interface{}) error

Assign new value to Boolean

value is first passed through CastToBoolean

func (Boolean) Cast 

func (Boolean) Cast(val interface{}) (TypedValue, error)

Cast converts value to bool

func (*Boolean) Clone 

func (v *Boolean) Clone() (out TypedValue, err error)

func (Boolean) Compare 

func (t Boolean) Compare(to TypedValue) (int, error)

Compare the two Boolean values

func (*Boolean) Get 

func (t *Boolean) Get() interface{}

Get return underlying value on Boolean

func (*Boolean) GetValue 

func (t *Boolean) GetValue() bool

GetValue returns underlying value on Boolean

func (Boolean) Type 

func (Boolean) Type() string

Type return type name

type Bytes 

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

Bytes is an expression type, wrapper for []byte type

func NewBytes 

func NewBytes(val interface{}) (*Bytes, error)

NewBytes creates new instance of Bytes expression type

func (*Bytes) Assign 

func (t *Bytes) Assign(val interface{}) error

Assign new value to Bytes

value is first passed through CastToBytes

func (Bytes) Cast 

func (Bytes) Cast(val interface{}) (TypedValue, error)

Cast converts value to []byte

func (*Bytes) Clone 

func (v *Bytes) Clone() (out TypedValue, err error)

func (*Bytes) Get 

func (t *Bytes) Get() interface{}

Get return underlying value on Bytes

func (*Bytes) GetValue 

func (t *Bytes) GetValue() []byte

GetValue returns underlying value on Bytes

func (*Bytes) IsEmpty 

func (t *Bytes) IsEmpty() bool

func (Bytes) Type 

func (Bytes) Type() string

Type return type name

type Comparable 

type Comparable interface {
	Compare(TypedValue) (int, error)
}

type DateTime 

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

DateTime is an expression type, wrapper for *time.Time type

func NewDateTime 

func NewDateTime(val interface{}) (*DateTime, error)

NewDateTime creates new instance of DateTime expression type

func (*DateTime) Assign 

func (t *DateTime) Assign(val interface{}) error

Assign new value to DateTime

value is first passed through CastToDateTime

func (DateTime) Cast 

func (DateTime) Cast(val interface{}) (TypedValue, error)

Cast converts value to *time.Time

func (*DateTime) Clone 

func (v *DateTime) Clone() (out TypedValue, err error)

func (DateTime) Compare 

func (t DateTime) Compare(to TypedValue) (int, error)

Compare the two DateTime values

func (*DateTime) Get 

func (t *DateTime) Get() interface{}

Get return underlying value on DateTime

func (*DateTime) GetValue 

func (t *DateTime) GetValue() *time.Time

GetValue returns underlying value on DateTime

func (DateTime) IsEmpty 

func (v DateTime) IsEmpty() bool

func (DateTime) Type 

func (DateTime) Type() string

Type return type name

type DeepFieldAssigner 

type DeepFieldAssigner interface {
	AssignFieldValue(Pather, TypedValue) error
}

type Dict 

type Dict interface {
	Dict() map[string]interface{}
}

type Duration 

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

Duration is an expression type, wrapper for time.Duration type

func NewDuration 

func NewDuration(val interface{}) (*Duration, error)

NewDuration creates new instance of Duration expression type

func (*Duration) Assign 

func (t *Duration) Assign(val interface{}) error

Assign new value to Duration

value is first passed through CastToDuration

func (Duration) Cast 

func (Duration) Cast(val interface{}) (TypedValue, error)

Cast converts value to time.Duration

func (*Duration) Clone 

func (v *Duration) Clone() (out TypedValue, err error)

func (Duration) Compare 

func (t Duration) Compare(to TypedValue) (int, error)

Compare the two Duration values

func (*Duration) Get 

func (t *Duration) Get() interface{}

Get return underlying value on Duration

func (*Duration) GetValue 

func (t *Duration) GetValue() time.Duration

GetValue returns underlying value on Duration

func (Duration) Type 

func (Duration) Type() string

Type return type name

type Evaluable 

type Evaluable interface {
	Eval(context.Context, *Vars) (interface{}, error)
	Test(context.Context, *Vars) (bool, error)
}

type Evaluator 

type Evaluator interface {
	GetExpr() string
	SetEval(eval Evaluable)
}

type FieldAssigner 

type FieldAssigner interface {
	AssignFieldValue(string, TypedValue) error
}

type FieldSelector 

type FieldSelector interface {
	Has(k string) bool
	Select(k string) (TypedValue, error)
}

type Float 

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

Float is an expression type, wrapper for float64 type

func NewFloat 

func NewFloat(val interface{}) (*Float, error)

NewFloat creates new instance of Float expression type

func (*Float) Assign 

func (t *Float) Assign(val interface{}) error

Assign new value to Float

value is first passed through CastToFloat

func (Float) Cast 

func (Float) Cast(val interface{}) (TypedValue, error)

Cast converts value to float64

func (*Float) Clone 

func (v *Float) Clone() (out TypedValue, err error)

func (Float) Compare 

func (t Float) Compare(to TypedValue) (int, error)

Compare the two Float values

func (*Float) Get 

func (t *Float) Get() interface{}

Get return underlying value on Float

func (*Float) GetValue 

func (t *Float) GetValue() float64

GetValue returns underlying value on Float

func (Float) Type 

func (Float) Type() string

Type return type name

type Handle 

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

Handle is an expression type, wrapper for string type

func NewHandle 

func NewHandle(val interface{}) (*Handle, error)

NewHandle creates new instance of Handle expression type

func (*Handle) Assign 

func (t *Handle) Assign(val interface{}) error

Assign new value to Handle

value is first passed through CastToHandle

func (Handle) Cast 

func (Handle) Cast(val interface{}) (TypedValue, error)

Cast converts value to string

func (*Handle) Clone 

func (v *Handle) Clone() (out TypedValue, err error)

func (Handle) Compare 

func (t Handle) Compare(to TypedValue) (int, error)

Compare the two Handle values

func (*Handle) Get 

func (t *Handle) Get() interface{}

Get return underlying value on Handle

func (*Handle) GetValue 

func (t *Handle) GetValue() string

GetValue returns underlying value on Handle

func (Handle) Type 

func (Handle) Type() string

Type return type name

type HttpRequest 

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

HttpRequest is an expression type, wrapper for *http.Request type

func NewHttpRequest 

func NewHttpRequest(val interface{}) (*HttpRequest, error)

NewHttpRequest creates new instance of HttpRequest expression type

func (*HttpRequest) Assign 

func (t *HttpRequest) Assign(val interface{}) error

Assign new value to HttpRequest

value is first passed through CastToHttpRequest

func (*HttpRequest) AssignFieldValue 

func (t *HttpRequest) AssignFieldValue(key string, val TypedValue) error

func (HttpRequest) Cast 

func (HttpRequest) Cast(val interface{}) (TypedValue, error)

Cast converts value to *http.Request

func (*HttpRequest) Clone 

func (v *HttpRequest) Clone() (out TypedValue, err error)

func (*HttpRequest) Get 

func (t *HttpRequest) Get() interface{}

Get return underlying value on HttpRequest

func (*HttpRequest) GetValue 

func (t *HttpRequest) GetValue() *http.Request

GetValue returns underlying value on HttpRequest

func (*HttpRequest) Has 

func (t *HttpRequest) Has(k string) bool

func (*HttpRequest) Select 

func (t *HttpRequest) Select(k string) (TypedValue, error)

Select is field accessor for *http.Request

Similar to SelectGVal but returns typed values

func (*HttpRequest) SelectGVal 

func (t *HttpRequest) SelectGVal(ctx context.Context, k string) (interface{}, error)

SelectGVal implements gval.Selector requirements

It allows gval lib to access HttpRequest's underlying value (*http.Request) and it's fields

func (HttpRequest) Type 

func (HttpRequest) Type() string

Type return type name

type ID 

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

ID is an expression type, wrapper for uint64 type

func NewID 

func NewID(val interface{}) (*ID, error)

NewID creates new instance of ID expression type

func (*ID) Assign 

func (t *ID) Assign(val interface{}) error

Assign new value to ID

value is first passed through CastToID

func (ID) Cast 

func (ID) Cast(val interface{}) (TypedValue, error)

Cast converts value to uint64

func (*ID) Clone 

func (v *ID) Clone() (out TypedValue, err error)

func (ID) Compare 

func (t ID) Compare(to TypedValue) (int, error)

Compare the two ID values

func (*ID) Get 

func (t *ID) Get() interface{}

Get return underlying value on ID

func (*ID) GetValue 

func (t *ID) GetValue() uint64

GetValue returns underlying value on ID

func (ID) MarshalJSON 

func (t ID) MarshalJSON() ([]byte, error)

func (ID) Type 

func (ID) Type() string

Type return type name

type Integer 

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

Integer is an expression type, wrapper for int64 type

func NewInteger 

func NewInteger(val interface{}) (*Integer, error)

NewInteger creates new instance of Integer expression type

func (*Integer) Assign 

func (t *Integer) Assign(val interface{}) error

Assign new value to Integer

value is first passed through CastToInteger

func (Integer) Cast 

func (Integer) Cast(val interface{}) (TypedValue, error)

Cast converts value to int64

func (*Integer) Clone 

func (v *Integer) Clone() (out TypedValue, err error)

func (Integer) Compare 

func (t Integer) Compare(to TypedValue) (int, error)

Compare the two Integer values

func (*Integer) Get 

func (t *Integer) Get() interface{}

Get return underlying value on Integer

func (*Integer) GetValue 

func (t *Integer) GetValue() int64

GetValue returns underlying value on Integer

func (Integer) Type 

func (Integer) Type() string

Type return type name

type Iterator 

type Iterator interface {
	Each(func(k string, v TypedValue) error) error
}

type KV 

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

KV is an expression type, wrapper for map[string]string type

func EmptyKV 

func EmptyKV() *KV

func NewKV 

func NewKV(val interface{}) (*KV, error)

NewKV creates new instance of KV expression type

func (*KV) Assign 

func (t *KV) Assign(val interface{}) error

Assign new value to KV

value is first passed through CastToKV

func (*KV) AssignFieldValue 

func (t *KV) AssignFieldValue(key string, val TypedValue) error

func (KV) Cast 

func (KV) Cast(val interface{}) (TypedValue, error)

Cast converts value to map[string]string

func (*KV) Clone 

func (v *KV) Clone() (out TypedValue, err error)

func (*KV) Delete 

func (t *KV) Delete(keys ...string) (out TypedValue, err error)

Delete take keys returns KV without those key value pair

func (*KV) Each 

func (t *KV) Each(fn func(k string, v TypedValue) error) (err error)

func (*KV) Filter 

func (t *KV) Filter(keys ...string) (out TypedValue, err error)

Filter take keys returns KV with only those key value pair

func (*KV) Get 

func (t *KV) Get() interface{}

Get return underlying value on KV

func (*KV) GetValue 

func (t *KV) GetValue() map[string]string

GetValue returns underlying value on KV

func (*KV) Has 

func (t *KV) Has(k string) bool

func (*KV) Merge 

func (t *KV) Merge(nn ...Iterator) (out TypedValue, err error)

Merge combines the given KVs into KV NOTE: It will return CLONE of the original KV, if its called without any parameters

func (*KV) Select 

func (t *KV) Select(k string) (TypedValue, error)

func (*KV) SelectGVal 

func (t *KV) SelectGVal(_ context.Context, k string) (interface{}, error)

func (KV) Type 

func (KV) Type() string

Type return type name

type KVV 

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

KVV is an expression type, wrapper for map[string][]string type

func EmptyKVV 

func EmptyKVV() *KVV

func NewKVV 

func NewKVV(val interface{}) (*KVV, error)

NewKVV creates new instance of KVV expression type

func (*KVV) Assign 

func (t *KVV) Assign(val interface{}) error

Assign new value to KVV

value is first passed through CastToKVV

func (*KVV) AssignFieldValue 

func (t *KVV) AssignFieldValue(p Pather, val TypedValue) error

func (KVV) Cast 

func (KVV) Cast(val interface{}) (TypedValue, error)

Cast converts value to map[string][]string

func (*KVV) Clone 

func (v *KVV) Clone() (out TypedValue, err error)

func (*KVV) Delete 

func (t *KVV) Delete(keys ...string) (out TypedValue, err error)

Delete take keys returns KVV without those key value pair

func (*KVV) Each 

func (t *KVV) Each(fn func(k string, v TypedValue) error) (err error)

func (*KVV) Filter 

func (t *KVV) Filter(keys ...string) (out TypedValue, err error)

Filter take keys returns KVV with only those key value pair

func (*KVV) Get 

func (t *KVV) Get() interface{}

Get return underlying value on KVV

func (*KVV) GetValue 

func (t *KVV) GetValue() map[string][]string

GetValue returns underlying value on KVV

func (*KVV) Merge 

func (t *KVV) Merge(nn ...Iterator) (out TypedValue, err error)

Merge combines the given KVVs into KVV NOTE: It will return CLONE of the original KVV, if its called without any parameters

func (*KVV) Select 

func (t *KVV) Select(k string) (TypedValue, error)

func (*KVV) SelectGVal 

func (t *KVV) SelectGVal(_ context.Context, k string) (interface{}, error)

func (KVV) Type 

func (KVV) Type() string

Type return type name

type Meta 

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

Meta is an expression type, wrapper for map[string]any type

func NewMeta 

func NewMeta(val interface{}) (*Meta, error)

NewMeta creates new instance of Meta expression type

func (*Meta) Assign 

func (t *Meta) Assign(val interface{}) error

Assign new value to Meta

value is first passed through CastToMeta

func (Meta) Cast 

func (Meta) Cast(val interface{}) (TypedValue, error)

Cast converts value to map[string]any

func (*Meta) Clone 

func (v *Meta) Clone() (out TypedValue, err error)

func (*Meta) Get 

func (t *Meta) Get() interface{}

Get return underlying value on Meta

func (*Meta) GetValue 

func (t *Meta) GetValue() map[string]any

GetValue returns underlying value on Meta

func (Meta) Type 

func (Meta) Type() string

Type return type name

type Parsable 

type Parsable interface {
	Parse(string) (Evaluable, error)
	ParseEvaluators(ee ...Evaluator) error
}

func NewParser 

func NewParser() Parsable

type Pather 

type Pather interface {
	String() string
	More() bool
	IsLast() bool
	Get() string
	Rest() string
	Next() (err error)
}

type Reader 

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

Reader is an expression type, wrapper for io.Reader type

func NewReader 

func NewReader(val interface{}) (*Reader, error)

NewReader creates new instance of Reader expression type

func (*Reader) Assign 

func (t *Reader) Assign(val interface{}) error

Assign new value to Reader

value is first passed through CastToReader

func (Reader) Cast 

func (Reader) Cast(val interface{}) (TypedValue, error)

Cast converts value to io.Reader

func (*Reader) Clone 

func (v *Reader) Clone() (out TypedValue, err error)

func (*Reader) Get 

func (t *Reader) Get() interface{}

Get return underlying value on Reader

func (*Reader) GetValue 

func (t *Reader) GetValue() io.Reader

GetValue returns underlying value on Reader

func (Reader) Type 

func (Reader) Type() string

Type return type name

type Slice 

type Slice interface {
	Slice() []interface{}
}

type String 

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

String is an expression type, wrapper for string type

func NewString 

func NewString(val interface{}) (*String, error)

NewString creates new instance of String expression type

func (*String) Assign 

func (t *String) Assign(val interface{}) error

Assign new value to String

value is first passed through CastToString

func (String) Cast 

func (String) Cast(val interface{}) (TypedValue, error)

Cast converts value to string

func (*String) Clone 

func (v *String) Clone() (out TypedValue, err error)

func (String) Compare 

func (t String) Compare(to TypedValue) (int, error)

Compare the two String values

func (*String) Get 

func (t *String) Get() interface{}

Get return underlying value on String

func (*String) GetValue 

func (t *String) GetValue() string

GetValue returns underlying value on String

func (String) Type 

func (String) Type() string

Type return type name

type Type 

type Type interface {
	Type() string
	Cast(interface{}) (TypedValue, error)
}

type TypeValueDecoder 

type TypeValueDecoder interface {
	Decode(dst reflect.Value) error
}

type TypedValue 

type TypedValue interface {
	Type
	Assigner
	Clone() (TypedValue, error)
	Get() interface{}
}

func CastToArray 

func CastToArray(val interface{}) (out []TypedValue, err error)

func Must 

func Must(v TypedValue, err error) TypedValue

func NewUnresolved 

func NewUnresolved(typ string, val interface{}) (TypedValue, error)

NewUnresolved creates new instance of Unresolved expression type

func Select 

func Select(base TypedValue, path string) (out TypedValue, err error)

func Typify 

func Typify(in interface{}) (tv TypedValue, err error)

Typify detects input type and wraps it with expression type

type Unresolved 

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

Unresolved is a special type that holds value + type it needs to be resolved to

This solves problem with typed value serialization

func (*Unresolved) Assign 

func (t *Unresolved) Assign(interface{}) (err error)

func (Unresolved) Cast 

func (Unresolved) Cast(interface{}) (TypedValue, error)

Casts value to interface{}

func (Unresolved) Clone 

func (v Unresolved) Clone() (out TypedValue, err error)

func (Unresolved) Get 

func (t Unresolved) Get() interface{}

Returns underlying value on Unresolved

func (Unresolved) Type 

func (t Unresolved) Type() string

Returns type name

type UnsignedInteger 

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

UnsignedInteger is an expression type, wrapper for uint64 type

func NewUnsignedInteger 

func NewUnsignedInteger(val interface{}) (*UnsignedInteger, error)

NewUnsignedInteger creates new instance of UnsignedInteger expression type

func (*UnsignedInteger) Assign 

func (t *UnsignedInteger) Assign(val interface{}) error

Assign new value to UnsignedInteger

value is first passed through CastToUnsignedInteger

func (UnsignedInteger) Cast 

func (UnsignedInteger) Cast(val interface{}) (TypedValue, error)

Cast converts value to uint64

func (*UnsignedInteger) Clone 

func (v *UnsignedInteger) Clone() (out TypedValue, err error)

func (UnsignedInteger) Compare 

func (t UnsignedInteger) Compare(to TypedValue) (int, error)

Compare the two UnsignedInteger values

func (*UnsignedInteger) Get 

func (t *UnsignedInteger) Get() interface{}

Get return underlying value on UnsignedInteger

func (*UnsignedInteger) GetValue 

func (t *UnsignedInteger) GetValue() uint64

GetValue returns underlying value on UnsignedInteger

func (UnsignedInteger) Type 

func (UnsignedInteger) Type() string

Type return type name

type Url 

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

Url is an expression type, wrapper for *url.URL type

func NewUrl 

func NewUrl(val interface{}) (*Url, error)

NewUrl creates new instance of Url expression type

func (*Url) Assign 

func (t *Url) Assign(val interface{}) error

Assign new value to Url

value is first passed through CastToUrl

func (Url) Cast 

func (Url) Cast(val interface{}) (TypedValue, error)

Cast converts value to *url.URL

func (*Url) Clone 

func (v *Url) Clone() (out TypedValue, err error)

func (*Url) Get 

func (t *Url) Get() interface{}

Get return underlying value on Url

func (*Url) GetValue 

func (t *Url) GetValue() *url.URL

GetValue returns underlying value on Url

func (Url) Type 

func (Url) Type() string

Type return type name

type Vars 

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

Vars is an expression type, wrapper for map[string]TypedValue type

func EmptyVars 

func EmptyVars() *Vars

func NewVars 

func NewVars(val interface{}) (*Vars, error)

NewVars creates new instance of Vars expression type

func (*Vars) Assign 

func (t *Vars) Assign(val interface{}) error

Assign new value to Vars

value is first passed through CastToVars

func (*Vars) AssignFieldValue 

func (t *Vars) AssignFieldValue(key string, val TypedValue) (err error)

func (Vars) Cast 

func (Vars) Cast(val interface{}) (TypedValue, error)

Cast converts value to map[string]TypedValue

func (*Vars) Clone 

func (v *Vars) Clone() (out TypedValue, err error)

func (*Vars) Copy 

func (t *Vars) Copy(dst *Vars, kk ...string)

Copy takes base variables and copies all to dst

func (*Vars) Decode 

func (t *Vars) Decode(dst interface{}) (err error)

func (*Vars) Delete 

func (t *Vars) Delete(keys ...string) (out TypedValue, err error)

Delete take keys returns Vars without those key value pair

func (*Vars) Dict 

func (t *Vars) Dict() (out map[string]interface{})

func (*Vars) Each 

func (t *Vars) Each(fn func(k string, v TypedValue) error) (err error)

func (*Vars) Filter 

func (t *Vars) Filter(keys ...string) (out TypedValue, err error)

Filter take keys returns Vars with only those key value pair

func (*Vars) Get 

func (t *Vars) Get() interface{}

Get return underlying value on Vars

func (*Vars) GetValue 

func (t *Vars) GetValue() map[string]TypedValue

GetValue returns underlying value on Vars

func (*Vars) Has 

func (t *Vars) Has(key string) bool

Has returns true key is present

func (*Vars) HasAll 

func (t *Vars) HasAll(key string, kk ...string) bool

HasAll returns true if all keys are present

func (*Vars) HasAny 

func (t *Vars) HasAny(key string, kk ...string) bool

HasAny returns true if all keys are present

func (*Vars) IsEmpty 

func (t *Vars) IsEmpty() bool

func (*Vars) Len 

func (t *Vars) Len() (out int)

func (*Vars) MarshalJSON 

func (t *Vars) MarshalJSON() (out []byte, err error)

MarshalJSON returns JSON encoding of expression

func (*Vars) Merge 

func (t *Vars) Merge(nn ...Iterator) (out TypedValue, err error)

Merge combines the given Vars(es) into Vars NOTE: It will return CLONE of the original Vars, if it's called without any parameters

func (*Vars) MustMerge 

func (t *Vars) MustMerge(nn ...Iterator) *Vars

MustMerge returns Vars after merging the given Vars(es) into it

func (*Vars) ResolveTypes 

func (t *Vars) ResolveTypes(res func(typ string) Type) (err error)

func (*Vars) Scan 

func (t *Vars) Scan(src any) error

func (*Vars) Select 

func (t *Vars) Select(k string) (out TypedValue, err error)

func (*Vars) SelectGVal 

func (t *Vars) SelectGVal(_ context.Context, k string) (out interface{}, err error)

func (*Vars) Set 

func (t *Vars) Set(k string, v interface{}) (err error)

Set or update the specific key value in Vars

func (Vars) Type 

func (Vars) Type() string

Type return type name

func (*Vars) UnmarshalJSON 

func (t *Vars) UnmarshalJSON(in []byte) (err error)

UnmarshalJSON unmarshal JSON value into Vars

func (*Vars) Value 

func (t *Vars) Value() (driver.Value, error)

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