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errors.go
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errors.go
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/*
* Cadence - The resource-oriented smart contract programming language
*
* Copyright 2019-2020 Dapper Labs, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package runtime
import (
"fmt"
"strings"
"github.com/onflow/cadence/runtime/ast"
"github.com/onflow/cadence/runtime/common"
"github.com/onflow/cadence/runtime/interpreter"
"github.com/onflow/cadence/runtime/pretty"
"github.com/onflow/cadence/runtime/sema"
)
// Error is the containing type for all errors produced by the runtime.
type Error struct {
Err error
Location common.Location
Codes map[common.LocationID]string
Programs map[common.LocationID]*ast.Program
}
func newError(err error, context Context) Error {
return Error{
Err: err,
Location: context.Location,
Codes: context.codes,
Programs: context.programs,
}
}
func (e Error) Unwrap() error {
return e.Err
}
func (e Error) Error() string {
var sb strings.Builder
sb.WriteString("Execution failed:\n")
printErr := pretty.NewErrorPrettyPrinter(&sb, false).
PrettyPrintError(e.Err, e.Location, e.Codes)
if printErr != nil {
panic(printErr)
}
return sb.String()
}
// ComputationLimitExceededError
type ComputationLimitExceededError struct {
Limit uint64
}
func (e ComputationLimitExceededError) Error() string {
return fmt.Sprintf(
"computation limited exceeded: %d",
e.Limit,
)
}
// InvalidTransactionCountError
type InvalidTransactionCountError struct {
Count int
}
func (e InvalidTransactionCountError) Error() string {
if e.Count == 0 {
return "no transaction declared: expected 1, got 0"
}
return fmt.Sprintf(
"multiple transactions declared: expected 1, got %d",
e.Count,
)
}
// InvalidTransactionParameterCountError
type InvalidEntryPointParameterCountError struct {
Expected int
Actual int
}
func (e InvalidEntryPointParameterCountError) Error() string {
return fmt.Sprintf(
"entry point parameter count mismatch: expected %d, got %d",
e.Expected,
e.Actual,
)
}
// InvalidTransactionAuthorizerCountError
type InvalidTransactionAuthorizerCountError struct {
Expected int
Actual int
}
func (e InvalidTransactionAuthorizerCountError) Error() string {
return fmt.Sprintf(
"authorizer count mismatch for transaction: expected %d, got %d",
e.Expected,
e.Actual,
)
}
// InvalidEntryPointArgumentError
//
type InvalidEntryPointArgumentError struct {
Index int
Err error
}
func (e *InvalidEntryPointArgumentError) Unwrap() error {
return e.Err
}
func (e *InvalidEntryPointArgumentError) Error() string {
return fmt.Sprintf(
"invalid argument at index %d: %s",
e.Index,
e.Err.Error(),
)
}
// MalformedValueError
type MalformedValueError struct {
ExpectedType sema.Type
}
func (e *MalformedValueError) Error() string {
return fmt.Sprintf(
"value does not conform to expected type `%s`",
e.ExpectedType.QualifiedString(),
)
}
// InvalidValueTypeError
//
type InvalidValueTypeError struct {
ExpectedType sema.Type
}
func (e *InvalidValueTypeError) Error() string {
return fmt.Sprintf(
"expected value of type `%s`",
e.ExpectedType.QualifiedString(),
)
}
// InvalidScriptReturnTypeError is an error that is reported for
// invalid script return types.
//
// For example, the type `Int` is valid,
// whereas a function type is not,
// because it cannot be exported/serialized.
//
type InvalidScriptReturnTypeError struct {
Type sema.Type
}
func (e *InvalidScriptReturnTypeError) Error() string {
return fmt.Sprintf(
"invalid script return type: `%s`",
e.Type.QualifiedString(),
)
}
// ScriptParameterTypeNotStorableError is an error that is reported for
// script parameter types that are not storable.
//
// For example, the type `Int` is a storable type,
// whereas a function type is not.
//
type ScriptParameterTypeNotStorableError struct {
Type sema.Type
}
func (e *ScriptParameterTypeNotStorableError) Error() string {
return fmt.Sprintf(
"parameter type is non-storable type: `%s`",
e.Type.QualifiedString(),
)
}
// ParsingCheckingError is an error wrapper
// for a parsing or a checking error at a specific location
//
type ParsingCheckingError struct {
Err error
Location common.Location
}
func (e *ParsingCheckingError) ChildErrors() []error {
return []error{e.Err}
}
func (e *ParsingCheckingError) Error() string {
return e.Err.Error()
}
func (e *ParsingCheckingError) Unwrap() error {
return e.Err
}
func (e *ParsingCheckingError) ImportLocation() common.Location {
return e.Location
}
// InvalidContractDeploymentError
//
type InvalidContractDeploymentError struct {
Err error
interpreter.LocationRange
}
func (e *InvalidContractDeploymentError) Error() string {
return fmt.Sprintf("cannot deploy invalid contract: %s", e.Err.Error())
}
func (e *InvalidContractDeploymentError) ChildErrors() []error {
return []error{
&InvalidContractDeploymentOriginError{
LocationRange: e.LocationRange,
},
e.Err,
}
}
func (e *InvalidContractDeploymentError) Unwrap() error {
return e.Err
}
// ContractRemovalError
//
type ContractRemovalError struct {
Name string
interpreter.LocationRange
}
func (e *ContractRemovalError) Error() string {
return fmt.Sprintf("cannot remove contract `%s`", e.Name)
}
// InvalidContractDeploymentOriginError
//
type InvalidContractDeploymentOriginError struct {
interpreter.LocationRange
}
func (*InvalidContractDeploymentOriginError) Error() string {
return "cannot deploy invalid contract"
}
// Contract update related errors
// ContractUpdateError is reported upon any invalid update to a contract or contract interface.
// It contains all the errors reported during the update validation.
type ContractUpdateError struct {
ContractName string
Errors []error
Location common.Location
}
func (e *ContractUpdateError) Error() string {
return fmt.Sprintf("cannot update contract `%s`", e.ContractName)
}
func (e *ContractUpdateError) ChildErrors() []error {
return e.Errors
}
func (e *ContractUpdateError) ImportLocation() common.Location {
return e.Location
}
// FieldMismatchError is reported during a contract update, when a type of a field
// does not match the existing type of the same field.
type FieldMismatchError struct {
DeclName string
FieldName string
Err error
ast.Range
}
func (e *FieldMismatchError) Error() string {
return fmt.Sprintf("mismatching field `%s` in `%s`",
e.FieldName,
e.DeclName,
)
}
func (e *FieldMismatchError) SecondaryError() string {
return e.Err.Error()
}
// TypeMismatchError is reported during a contract update, when a type of the new program
// does not match the existing type.
type TypeMismatchError struct {
ExpectedType ast.Type
FoundType ast.Type
ast.Range
}
func (e *TypeMismatchError) Error() string {
return fmt.Sprintf("incompatible type annotations. expected `%s`, found `%s`",
e.ExpectedType,
e.FoundType,
)
}
// ExtraneousFieldError is reported during a contract update, when an updated composite
// declaration has more fields than the existing declaration.
type ExtraneousFieldError struct {
DeclName string
FieldName string
ast.Range
}
func (e *ExtraneousFieldError) Error() string {
return fmt.Sprintf("found new field `%s` in `%s`",
e.FieldName,
e.DeclName,
)
}
// ContractNotFoundError is reported during a contract update, if no contract can be
// found in the program.
type ContractNotFoundError struct {
ast.Range
}
func (e *ContractNotFoundError) Error() string {
return "cannot find any contract or contract interface"
}
// InvalidDeclarationKindChangeError is reported during a contract update, when an attempt is made
// to convert an existing contract to a contract interface, or vise versa.
type InvalidDeclarationKindChangeError struct {
Name string
OldKind common.DeclarationKind
NewKind common.DeclarationKind
ast.Range
}
func (e *InvalidDeclarationKindChangeError) Error() string {
return fmt.Sprintf("trying to convert %s `%s` to a %s", e.OldKind.Name(), e.Name, e.NewKind.Name())
}
// ConformanceMismatchError is reported during a contract update, when the enum conformance of the new program
// does not match the existing one.
type ConformanceMismatchError struct {
DeclName string
Err error
ast.Range
}
func (e *ConformanceMismatchError) Error() string {
return fmt.Sprintf("conformances does not match in `%s`", e.DeclName)
}
func (e *ConformanceMismatchError) SecondaryError() string {
return e.Err.Error()
}
// ConformanceCountMismatchError is reported during a contract update, when the conformance count
// does not match the existing conformance count.
type ConformanceCountMismatchError struct {
Expected int
Found int
ast.Range
}
func (e *ConformanceCountMismatchError) Error() string {
return fmt.Sprintf("conformances count does not match: expected %d, found %d", e.Expected, e.Found)
}
// EnumCaseMismatchError is reported during an enum update, when an updated enum case
// does not match the existing enum case.
type EnumCaseMismatchError struct {
ExpectedName string
FoundName string
ast.Range
}
func (e *EnumCaseMismatchError) Error() string {
return fmt.Sprintf("mismatching enum case: expected `%s`, found `%s`",
e.ExpectedName,
e.FoundName,
)
}
// MissingEnumCasesError is reported during an enum update, if any enum cases are removed
// from an existing enum.
type MissingEnumCasesError struct {
DeclName string
Expected int
Found int
ast.Range
}
func (e *MissingEnumCasesError) Error() string {
return fmt.Sprintf(
"missing cases in enum `%s`: expected %d or more, found %d",
e.DeclName,
e.Expected,
e.Found,
)
}
// MissingCompositeDeclarationError is reported during an contract update, if an existing
// composite declaration (struct or struct interface) is removed.
type MissingCompositeDeclarationError struct {
Name string
ast.Range
}
func (e *MissingCompositeDeclarationError) Error() string {
return fmt.Sprintf(
"missing composite declaration `%s`",
e.Name,
)
}