Merge pull request #3403 from VoR0220/fixedPointsAbi
accounts/abi: prepare ABI to handle fixed point types
This commit is contained in:
Péter Szilágyi
GitHub
@@ -33,7 +33,7 @@ const (
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FixedBytesTy
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BytesTy
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HashTy
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RealTy
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FixedpointTy
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)
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// Type is the reflection of the supported argument type
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@@ -57,16 +57,16 @@ var (
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// Types can be in the format of:
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//
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// Input = Type [ "[" [ Number ] "]" ] Name .
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// Type = [ "u" ] "int" [ Number ] .
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// Type = [ "u" ] "int" [ Number ] [ x ] [ Number ].
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//
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// Examples:
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//
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// string int uint real
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// string int uint fixed
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// string32 int8 uint8 uint[]
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// address int256 uint256 real[2]
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fullTypeRegex = regexp.MustCompile("([a-zA-Z0-9]+)(\\[([0-9]*)?\\])?")
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// address int256 uint256 fixed128x128[2]
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fullTypeRegex = regexp.MustCompile("([a-zA-Z0-9]+)(\\[([0-9]*)\\])?")
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// typeRegex parses the abi sub types
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typeRegex = regexp.MustCompile("([a-zA-Z]+)([0-9]*)?")
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typeRegex = regexp.MustCompile("([a-zA-Z]+)(([0-9]+)(x([0-9]+))?)?")
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)
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// NewType creates a new reflection type of abi type given in t.
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@@ -97,7 +97,7 @@ func NewType(t string) (typ Type, err error) {
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parsedType := typeRegex.FindAllStringSubmatch(res[1], -1)[0]
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// varSize is the size of the variable
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var varSize int
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if len(parsedType[2]) > 0 {
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if len(parsedType[3]) > 0 {
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var err error
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varSize, err = strconv.Atoi(parsedType[2])
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if err != nil {
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78
accounts/abi/type_test.go
Normal file
78
accounts/abi/type_test.go
Normal file
@@ -0,0 +1,78 @@
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// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package abi
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import (
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"reflect"
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"testing"
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)
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// typeWithoutStringer is a alias for the Type type which simply doesn't implement
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// the stringer interface to allow printing type details in the tests below.
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type typeWithoutStringer Type
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// Tests that all allowed types get recognized by the type parser.
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func TestTypeRegexp(t *testing.T) {
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tests := []struct {
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blob string
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kind Type
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}{
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{"int", Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}},
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{"int8", Type{Kind: reflect.Int8, Type: big_t, Size: 8, T: IntTy, stringKind: "int8"}},
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{"int256", Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}},
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{"int[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[]"}},
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{"int[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[2]"}},
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{"int32[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[]"}},
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{"int32[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[2]"}},
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{"uint", Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}},
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{"uint8", Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}},
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{"uint256", Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}},
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{"uint[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[]"}},
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{"uint[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[2]"}},
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{"uint32[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Uint32, Type: big_t, Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[]"}},
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{"uint32[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Uint32, Type: big_t, Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[2]"}},
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{"bytes", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: BytesTy, stringKind: "bytes"}},
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{"bytes32", Type{IsArray: true, SliceSize: 32, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: FixedBytesTy, stringKind: "bytes32"}},
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{"bytes[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: BytesTy, stringKind: "bytes"}, stringKind: "bytes[]"}},
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{"bytes[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: BytesTy, stringKind: "bytes"}, stringKind: "bytes[2]"}},
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{"bytes32[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{IsArray: true, SliceSize: 32, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: FixedBytesTy, stringKind: "bytes32"}, stringKind: "bytes32[]"}},
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{"bytes32[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{IsArray: true, SliceSize: 32, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: FixedBytesTy, stringKind: "bytes32"}, stringKind: "bytes32[2]"}},
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{"string", Type{Kind: reflect.String, Size: -1, T: StringTy, stringKind: "string"}},
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{"string[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.String, Size: -1, T: StringTy, stringKind: "string"}, stringKind: "string[]"}},
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{"string[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.String, Size: -1, T: StringTy, stringKind: "string"}, stringKind: "string[2]"}},
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{"address", Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}},
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{"address[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[]"}},
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{"address[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[2]"}},
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// TODO when fixed types are implemented properly
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// {"fixed", Type{}},
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// {"fixed128x128", Type{}},
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// {"fixed[]", Type{}},
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// {"fixed[2]", Type{}},
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// {"fixed128x128[]", Type{}},
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// {"fixed128x128[2]", Type{}},
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}
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for i, tt := range tests {
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typ, err := NewType(tt.blob)
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if err != nil {
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t.Errorf("type %d: failed to parse type string: %v", i, err)
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}
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if !reflect.DeepEqual(typ, tt.kind) {
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t.Errorf("type %d: parsed type mismatch:\n have %+v\n want %+v", i, typeWithoutStringer(typ), typeWithoutStringer(tt.kind))
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}
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}
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}
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