/
parameter.go
80 lines (70 loc) · 1.97 KB
/
parameter.go
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/*
* Cadence - The resource-oriented smart contract programming language
*
* Copyright 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 ast
import (
"encoding/json"
"github.com/onflow/cadence/runtime/common"
)
type Parameter struct {
TypeAnnotation *TypeAnnotation
Label string
Identifier Identifier
StartPos Position `json:"-"`
}
func NewParameter(
gauge common.MemoryGauge,
label string,
identifier Identifier,
typeAnnotation *TypeAnnotation,
startPos Position,
) *Parameter {
common.UseMemory(gauge, common.ParameterMemoryUsage)
return &Parameter{
Label: label,
Identifier: identifier,
TypeAnnotation: typeAnnotation,
StartPos: startPos,
}
}
var _ HasPosition = &Parameter{}
// EffectiveArgumentLabel returns the effective argument label that
// an argument in a call must use:
// If no argument label is declared for parameter,
// the parameter name is used as the argument label
func (p *Parameter) EffectiveArgumentLabel() string {
if p.Label != "" {
return p.Label
}
return p.Identifier.Identifier
}
func (p *Parameter) StartPosition() Position {
return p.StartPos
}
func (p *Parameter) EndPosition(memoryGauge common.MemoryGauge) Position {
return p.TypeAnnotation.EndPosition(memoryGauge)
}
func (p *Parameter) MarshalJSON() ([]byte, error) {
type Alias Parameter
return json.Marshal(&struct {
*Alias
Range
}{
Range: NewUnmeteredRangeFromPositioned(p),
Alias: (*Alias)(p),
})
}