stdlib

package
v0.14.1 Latest Latest
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 Go to latest Published: Mar 16, 2021 License: Apache-2.0 Imports: 12 Imported by: 0

Documentation

Index

Constants

View Source 
const FlowLocationPrefix = "flow"
View Source 
const HashSize = 32

Variables

View Source 
var AccountContractAddedEventType = newFlowEventType(
	"AccountContractAdded",
	AccountEventAddressParameter,
	AccountEventCodeHashParameter,
	AccountEventContractParameter,
)
View Source 
var AccountContractRemovedEventType = newFlowEventType(
	"AccountContractRemoved",
	AccountEventAddressParameter,
	AccountEventCodeHashParameter,
	AccountEventContractParameter,
)
View Source 
var AccountContractUpdatedEventType = newFlowEventType(
	"AccountContractUpdated",
	AccountEventAddressParameter,
	AccountEventCodeHashParameter,
	AccountEventContractParameter,
)
View Source 
var AccountCreatedEventType = newFlowEventType(
	"AccountCreated",
	AccountEventAddressParameter,
)
View Source 
var AccountEventAddressParameter = &sema.Parameter{
	Identifier:     "address",
	TypeAnnotation: sema.NewTypeAnnotation(&sema.AddressType{}),
}
View Source 
var AccountEventCodeHashParameter = &sema.Parameter{
	Identifier:     "codeHash",
	TypeAnnotation: sema.NewTypeAnnotation(HashType),
}
View Source 
var AccountEventContractParameter = &sema.Parameter{
	Identifier:     "contract",
	TypeAnnotation: sema.NewTypeAnnotation(sema.StringType),
}
View Source 
var AccountEventContractsParameter = &sema.Parameter{
	Identifier:     "contracts",
	TypeAnnotation: sema.NewTypeAnnotation(TypeIDsType),
}
View Source 
var AccountEventPublicKeyParameter = &sema.Parameter{
	Identifier: "publicKey",
	TypeAnnotation: sema.NewTypeAnnotation(
		&sema.VariableSizedType{
			Type: &sema.UInt8Type{},
		},
	),
}
View Source 
var AccountKeyAddedEventType = newFlowEventType(
	"AccountKeyAdded",
	AccountEventAddressParameter,
	AccountEventPublicKeyParameter,
)
View Source 
var AccountKeyRemovedEventType = newFlowEventType(
	"AccountKeyRemoved",
	AccountEventAddressParameter,
	AccountEventPublicKeyParameter,
)
View Source 
var AssertFunction = NewStandardLibraryFunction(
	"assert",
	&sema.FunctionType{
		Parameters: []*sema.Parameter{
			{
				Label:          sema.ArgumentLabelNotRequired,
				Identifier:     "condition",
				TypeAnnotation: sema.NewTypeAnnotation(sema.BoolType),
			},
			{
				Identifier:     "message",
				TypeAnnotation: sema.NewTypeAnnotation(sema.StringType),
			},
		},
		ReturnTypeAnnotation: sema.NewTypeAnnotation(
			sema.VoidType,
		),
		RequiredArgumentCount: sema.RequiredArgumentCount(1),
	},
	func(invocation interpreter.Invocation) interpreter.Value {
		result := invocation.Arguments[0].(interpreter.BoolValue)
		if !result {
			var message string
			if len(invocation.Arguments) > 1 {
				message = invocation.Arguments[1].(*interpreter.StringValue).Str
			}
			panic(AssertionError{
				Message:       message,
				LocationRange: invocation.GetLocationRange(),
			})
		}
		return interpreter.VoidValue{}
	},
)
View Source 
var BuiltinFunctions = StandardLibraryFunctions{
	AssertFunction,
	PanicFunction,
	CreatePublicKeyFunction,
}
View Source 
var BuiltinValues = StandardLibraryValues{
	SignatureAlgorithmValue,
	HashAlgorithmValue,
}
View Source 
var CreatePublicKeyFunction = NewStandardLibraryFunction(
	sema.PublicKeyTypeName,
	&sema.FunctionType{
		Parameters: []*sema.Parameter{
			{
				Label:          sema.PublicKeyPublicKeyField,
				Identifier:     sema.PublicKeyPublicKeyField,
				TypeAnnotation: sema.NewTypeAnnotation(&sema.VariableSizedType{Type: &sema.UInt8Type{}}),
			},
			{
				Label:          sema.PublicKeySignAlgoField,
				Identifier:     sema.PublicKeySignAlgoField,
				TypeAnnotation: sema.NewTypeAnnotation(sema.SignatureAlgorithmType),
			},
		},
		ReturnTypeAnnotation: sema.NewTypeAnnotation(sema.PublicKeyType),
	},

	func(invocation interpreter.Invocation) interpreter.Value {
		publicKey := invocation.Arguments[0].(*interpreter.ArrayValue)
		signAlgo := invocation.Arguments[1].(*interpreter.CompositeValue)

		return interpreter.NewPublicKeyValue(publicKey, signAlgo)
	},
)
View Source 
var CryptoChecker = func() *sema.Checker {

	code := internal.MustAssetString("contracts/crypto.cdc")

	program, err := parser2.ParseProgram(code)
	if err != nil {
		panic(err)
	}

	location := common.IdentifierLocation("Crypto")

	var checker *sema.Checker
	checker, err = sema.NewChecker(
		program,
		location,
		sema.WithPredeclaredValues(BuiltinFunctions.ToSemaValueDeclarations()),
		sema.WithPredeclaredTypes(BuiltinTypes.ToTypeDeclarations()),
	)
	if err != nil {
		panic(err)
	}

	err = checker.Check()
	if err != nil {
		panic(err)
	}

	return checker
}()
View Source 
var HashAlgorithmValue = StandardLibraryValue{
	Name:  sema.HashAlgorithmTypeName,
	Type:  nativeEnumType(sema.HashAlgorithmType, sema.HashAlgorithms),
	Value: nativeEnumValue(sema.HashAlgorithmType, sema.HashAlgorithms),
	Kind:  common.DeclarationKindEnum,
}
View Source 
var HashType = &sema.ConstantSizedType{
	Size: HashSize,
	Type: &sema.UInt8Type{},
}
View Source 
var HelperFunctions = StandardLibraryFunctions{
	LogFunction,
}
View Source 
var LogFunction = NewStandardLibraryFunction(
	"log",
	&sema.FunctionType{
		Parameters: []*sema.Parameter{
			{
				Label:      sema.ArgumentLabelNotRequired,
				Identifier: "value",
				TypeAnnotation: sema.NewTypeAnnotation(
					sema.AnyStructType,
				),
			},
		},
		ReturnTypeAnnotation: sema.NewTypeAnnotation(
			sema.VoidType,
		),
	},
	func(invocation interpreter.Invocation) interpreter.Value {
		fmt.Printf("%v\n", invocation.Arguments[0])
		return interpreter.VoidValue{}
	},
)
View Source 
var PanicFunction = NewStandardLibraryFunction(
	"panic",
	&sema.FunctionType{
		Parameters: []*sema.Parameter{
			{
				Label:          sema.ArgumentLabelNotRequired,
				Identifier:     "message",
				TypeAnnotation: sema.NewTypeAnnotation(sema.StringType),
			},
		},
		ReturnTypeAnnotation: sema.NewTypeAnnotation(
			sema.NeverType,
		),
	},
	func(invocation interpreter.Invocation) interpreter.Value {
		message := invocation.Arguments[0].(*interpreter.StringValue)
		panic(PanicError{
			Message:       message.Str,
			LocationRange: invocation.GetLocationRange(),
		})
	},
)
View Source 
var SignatureAlgorithmValue = StandardLibraryValue{
	Name:  sema.SignatureAlgorithmTypeName,
	Type:  nativeEnumType(sema.SignatureAlgorithmType, sema.SignatureAlgorithms),
	Value: nativeEnumValue(sema.SignatureAlgorithmType, sema.SignatureAlgorithms),
	Kind:  common.DeclarationKindEnum,
}
View Source 
var TypeIDsType = &sema.VariableSizedType{
	Type: sema.StringType,
}

Functions

func NewCryptoContract added in v0.5.0 

func NewCryptoContract(
	inter *interpreter.Interpreter,
	constructor interpreter.FunctionValue,
	signatureVerifier CryptoSignatureVerifier,
	hasher CryptoHasher,
	invocationRange ast.Range,
) (
	*interpreter.CompositeValue,
	error,
)

Types

type AssertionError 

type AssertionError struct {
	Message string
	interpreter.LocationRange
}

func (AssertionError) Error 

func (e AssertionError) Error() string

type CryptoHasher added in v0.10.0 

type CryptoHasher interface {
	Hash(
		data []byte,
		hashAlgorithm HashAlgorithm,
	) ([]byte, error)
}

type CryptoSignatureVerifier added in v0.5.0 

type CryptoSignatureVerifier interface {
	VerifySignature(
		signature []byte,
		tag string,
		signedData []byte,
		publicKey []byte,
		signatureAlgorithm SignatureAlgorithm,
		hashAlgorithm HashAlgorithm,
	) (bool, error)
}

type FlowBuiltinImpls 

type FlowBuiltinImpls struct {
	CreateAccount   interpreter.HostFunction
	GetAccount      interpreter.HostFunction
	Log             interpreter.HostFunction
	GetCurrentBlock interpreter.HostFunction
	GetBlock        interpreter.HostFunction
	UnsafeRandom    interpreter.HostFunction
}

FlowBuiltinImpls defines the set of functions needed to implement the Flow built-in functions.

func DefaultFlowBuiltinImpls added in v0.10.0 

func DefaultFlowBuiltinImpls() FlowBuiltinImpls

type FlowLocation added in v0.5.0 

type FlowLocation struct{}

func (FlowLocation) ID added in v0.5.0 

func (l FlowLocation) ID() common.LocationID

func (FlowLocation) MarshalJSON added in v0.12.0 

func (l FlowLocation) MarshalJSON() ([]byte, error)

func (FlowLocation) QualifiedIdentifier added in v0.10.2 

func (l FlowLocation) QualifiedIdentifier(typeID common.TypeID) string

func (FlowLocation) String added in v0.12.0 

func (l FlowLocation) String() string

func (FlowLocation) TypeID added in v0.10.2 

func (l FlowLocation) TypeID(qualifiedIdentifier string) common.TypeID

type HashAlgorithm added in v0.14.0 

type HashAlgorithm = sema.HashAlgorithm

type PanicError 

type PanicError struct {
	Message string
	interpreter.LocationRange
}

func (PanicError) Error 

func (e PanicError) Error() string

type SignatureAlgorithm added in v0.14.0 

type SignatureAlgorithm = sema.SignatureAlgorithm

type StandardLibraryFunction 

type StandardLibraryFunction struct {
	Name           string
	Type           sema.InvokableType
	Function       interpreter.HostFunctionValue
	ArgumentLabels []string
	Available      func(common.Location) bool
}

func NewStandardLibraryFunction 

func NewStandardLibraryFunction(
	name string,
	functionType sema.InvokableType,
	function interpreter.HostFunction,
) StandardLibraryFunction

func (StandardLibraryFunction) ValueDeclarationArgumentLabels 

func (f StandardLibraryFunction) ValueDeclarationArgumentLabels() []string

func (StandardLibraryFunction) ValueDeclarationAvailable added in v0.12.0 

func (f StandardLibraryFunction) ValueDeclarationAvailable(location common.Location) bool

func (StandardLibraryFunction) ValueDeclarationIsConstant 

func (StandardLibraryFunction) ValueDeclarationIsConstant() bool

func (StandardLibraryFunction) ValueDeclarationKind 

func (StandardLibraryFunction) ValueDeclarationKind() common.DeclarationKind

func (StandardLibraryFunction) ValueDeclarationName added in v0.12.0 

func (f StandardLibraryFunction) ValueDeclarationName() string

func (StandardLibraryFunction) ValueDeclarationPosition 

func (StandardLibraryFunction) ValueDeclarationPosition() ast.Position

func (StandardLibraryFunction) ValueDeclarationType 

func (f StandardLibraryFunction) ValueDeclarationType() sema.Type

func (StandardLibraryFunction) ValueDeclarationValue added in v0.12.0 

func (f StandardLibraryFunction) ValueDeclarationValue() interpreter.Value

type StandardLibraryFunctions 

type StandardLibraryFunctions []StandardLibraryFunction

func FlowBuiltInFunctions 

func FlowBuiltInFunctions(impls FlowBuiltinImpls) StandardLibraryFunctions

FlowBuiltInFunctions returns a list of standard library functions, bound to the provided implementation.

func (StandardLibraryFunctions) ToInterpreterValueDeclarations added in v0.12.0 

func (functions StandardLibraryFunctions) ToInterpreterValueDeclarations() []interpreter.ValueDeclaration

func (StandardLibraryFunctions) ToSemaValueDeclarations added in v0.12.0 

func (functions StandardLibraryFunctions) ToSemaValueDeclarations() []sema.ValueDeclaration

type StandardLibraryType 

type StandardLibraryType struct {
	Name string
	Type sema.Type
	Kind common.DeclarationKind
}

func (StandardLibraryType) TypeDeclarationKind 

func (t StandardLibraryType) TypeDeclarationKind() common.DeclarationKind

func (StandardLibraryType) TypeDeclarationName added in v0.12.0 

func (t StandardLibraryType) TypeDeclarationName() string

func (StandardLibraryType) TypeDeclarationPosition 

func (StandardLibraryType) TypeDeclarationPosition() ast.Position

func (StandardLibraryType) TypeDeclarationType 

func (t StandardLibraryType) TypeDeclarationType() sema.Type

type StandardLibraryTypes 

type StandardLibraryTypes []StandardLibraryType
var BuiltinTypes StandardLibraryTypes
var FlowBuiltInTypes StandardLibraryTypes

func (StandardLibraryTypes) ToTypeDeclarations 

func (types StandardLibraryTypes) ToTypeDeclarations() []sema.TypeDeclaration

type StandardLibraryValue 

type StandardLibraryValue struct {
	Name      string
	Type      sema.Type
	Value     interpreter.Value
	Kind      common.DeclarationKind
	Available func(common.Location) bool
}

func (StandardLibraryValue) ValueDeclarationArgumentLabels 

func (StandardLibraryValue) ValueDeclarationArgumentLabels() []string

func (StandardLibraryValue) ValueDeclarationAvailable added in v0.12.0 

func (v StandardLibraryValue) ValueDeclarationAvailable(location common.Location) bool

func (StandardLibraryValue) ValueDeclarationIsConstant 

func (v StandardLibraryValue) ValueDeclarationIsConstant() bool

func (StandardLibraryValue) ValueDeclarationKind 

func (v StandardLibraryValue) ValueDeclarationKind() common.DeclarationKind

func (StandardLibraryValue) ValueDeclarationName added in v0.12.0 

func (v StandardLibraryValue) ValueDeclarationName() string

func (StandardLibraryValue) ValueDeclarationPosition 

func (StandardLibraryValue) ValueDeclarationPosition() ast.Position

func (StandardLibraryValue) ValueDeclarationType 

func (v StandardLibraryValue) ValueDeclarationType() sema.Type

func (StandardLibraryValue) ValueDeclarationValue added in v0.12.0 

func (v StandardLibraryValue) ValueDeclarationValue() interpreter.Value

type StandardLibraryValues 

type StandardLibraryValues []StandardLibraryValue

func (StandardLibraryValues) ToInterpreterValueDeclarations added in v0.12.0 

func (values StandardLibraryValues) ToInterpreterValueDeclarations() []interpreter.ValueDeclaration

func (StandardLibraryValues) ToSemaValueDeclarations added in v0.12.0 

func (values StandardLibraryValues) ToSemaValueDeclarations() []sema.ValueDeclaration

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