mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-27 05:57:28 +00:00
80 lines
2.5 KiB
Go
80 lines
2.5 KiB
Go
// Copyright 2016 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package abi
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
)
|
|
|
|
// formatSliceString formats the reflection kind with the given slice size
|
|
// and returns a formatted string representation.
|
|
func formatSliceString(kind reflect.Kind, sliceSize int) string {
|
|
if sliceSize == -1 {
|
|
return fmt.Sprintf("[]%v", kind)
|
|
}
|
|
return fmt.Sprintf("[%d]%v", sliceSize, kind)
|
|
}
|
|
|
|
// sliceTypeCheck checks that the given slice can by assigned to the reflection
|
|
// type in t.
|
|
func sliceTypeCheck(t Type, val reflect.Value) error {
|
|
if val.Kind() != reflect.Slice && val.Kind() != reflect.Array {
|
|
return typeErr(formatSliceString(t.Kind, t.SliceSize), val.Type())
|
|
}
|
|
if t.IsArray && val.Len() != t.SliceSize {
|
|
return typeErr(formatSliceString(t.Elem.Kind, t.SliceSize), formatSliceString(val.Type().Elem().Kind(), val.Len()))
|
|
}
|
|
|
|
if t.Elem.IsSlice {
|
|
if val.Len() > 0 {
|
|
return sliceTypeCheck(*t.Elem, val.Index(0))
|
|
}
|
|
} else if t.Elem.IsArray {
|
|
return sliceTypeCheck(*t.Elem, val.Index(0))
|
|
}
|
|
|
|
if elemKind := val.Type().Elem().Kind(); elemKind != t.Elem.Kind {
|
|
return typeErr(formatSliceString(t.Elem.Kind, t.SliceSize), val.Type())
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// typeCheck checks that the given reflection value can be assigned to the reflection
|
|
// type in t.
|
|
func typeCheck(t Type, value reflect.Value) error {
|
|
if t.IsSlice || t.IsArray {
|
|
return sliceTypeCheck(t, value)
|
|
}
|
|
|
|
// Check base type validity. Element types will be checked later on.
|
|
if t.Kind != value.Kind() {
|
|
return typeErr(t.Kind, value.Kind())
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// varErr returns a formatted error.
|
|
func varErr(expected, got reflect.Kind) error {
|
|
return typeErr(expected, got)
|
|
}
|
|
|
|
// typeErr returns a formatted type casting error.
|
|
func typeErr(expected, got interface{}) error {
|
|
return fmt.Errorf("abi: cannot use %v as type %v as argument", got, expected)
|
|
}
|