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authorDeterminant <[email protected]>2020-06-28 14:47:41 -0400
committerDeterminant <[email protected]>2020-06-28 14:47:41 -0400
commitd235e2c6a5788ec4a6cff15a16f56b38a3876a0d (patch)
tree5f2727f7a50ee5840f889c82776d3a30a88dd59b /accounts/abi/error.go
parent13ebd8bd9468e9d769d598b0ca2afb72ba78cb97 (diff)
...
Diffstat (limited to 'accounts/abi/error.go')
-rw-r--r--accounts/abi/error.go84
1 files changed, 84 insertions, 0 deletions
diff --git a/accounts/abi/error.go b/accounts/abi/error.go
new file mode 100644
index 0000000..9d8674a
--- /dev/null
+++ b/accounts/abi/error.go
@@ -0,0 +1,84 @@
+// 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 (
+ "errors"
+ "fmt"
+ "reflect"
+)
+
+var (
+ errBadBool = errors.New("abi: improperly encoded boolean value")
+)
+
+// 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.Size), val.Type())
+ }
+
+ if t.T == ArrayTy && val.Len() != t.Size {
+ return typeErr(formatSliceString(t.Elem.Kind, t.Size), formatSliceString(val.Type().Elem().Kind(), val.Len()))
+ }
+
+ if t.Elem.T == SliceTy {
+ if val.Len() > 0 {
+ return sliceTypeCheck(*t.Elem, val.Index(0))
+ }
+ } else if t.Elem.T == ArrayTy {
+ return sliceTypeCheck(*t.Elem, val.Index(0))
+ }
+
+ if elemKind := val.Type().Elem().Kind(); elemKind != t.Elem.Kind {
+ return typeErr(formatSliceString(t.Elem.Kind, t.Size), 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.T == SliceTy || t.T == ArrayTy {
+ 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())
+ } else if t.T == FixedBytesTy && t.Size != value.Len() {
+ return typeErr(t.Type, value.Type())
+ } else {
+ return nil
+ }
+
+}
+
+// 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)
+}