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account/abi: implements event parsing

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Implementation of basic event parsing and its input types. This
separates methods and events and fixes an issue with go type parsing and
validation.
This commit is contained in:
Jeffrey Wilcke
2016-01-27 08:38:53 +01:00
parent d951ff300e
commit bddf8f76c8
6 changed files with 174 additions and 31 deletions
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82
accounts/abi/abi_test.go
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@ -31,25 +31,25 @@ import (
const jsondata = `
[
{ "name" : "balance", "const" : true },
{ "name" : "send", "const" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] }
{ "type" : "function", "name" : "balance", "const" : true },
{ "type" : "function", "name" : "send", "const" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] }
]`
const jsondata2 = `
[
{ "name" : "balance", "const" : true },
{ "name" : "send", "const" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] },
{ "name" : "test", "const" : false, "inputs" : [ { "name" : "number", "type" : "uint32" } ] },
{ "name" : "string", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "string" } ] },
{ "name" : "bool", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "bool" } ] },
{ "name" : "address", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "address" } ] },
{ "name" : "string32", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "string32" } ] },
{ "name" : "uint64[2]", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint64[2]" } ] },
{ "name" : "uint64[]", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint64[]" } ] },
{ "name" : "foo", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" } ] },
{ "name" : "bar", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" }, { "name" : "string", "type" : "uint16" } ] },
{ "name" : "slice", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32[2]" } ] },
{ "name" : "slice256", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint256[2]" } ] }
{ "type" : "function", "name" : "balance", "const" : true },
{ "type" : "function", "name" : "send", "const" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] },
{ "type" : "function", "name" : "test", "const" : false, "inputs" : [ { "name" : "number", "type" : "uint32" } ] },
{ "type" : "function", "name" : "string", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "string" } ] },
{ "type" : "function", "name" : "bool", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "bool" } ] },
{ "type" : "function", "name" : "address", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "address" } ] },
{ "type" : "function", "name" : "string32", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "string32" } ] },
{ "type" : "function", "name" : "uint64[2]", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint64[2]" } ] },
{ "type" : "function", "name" : "uint64[]", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint64[]" } ] },
{ "type" : "function", "name" : "foo", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" } ] },
{ "type" : "function", "name" : "bar", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" }, { "name" : "string", "type" : "uint16" } ] },
{ "type" : "function", "name" : "slice", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32[2]" } ] },
{ "type" : "function", "name" : "slice256", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint256[2]" } ] }
]`
func TestType(t *testing.T) {
@ -96,7 +96,7 @@ func TestReader(t *testing.T) {
},
"send": Method{
"send", false, []Argument{
Argument{"amount", Uint256},
Argument{"amount", Uint256, false},
}, nil,
},
},
@ -238,7 +238,7 @@ func TestTestAddress(t *testing.T) {
func TestMethodSignature(t *testing.T) {
String, _ := NewType("string")
String32, _ := NewType("string32")
m := Method{"foo", false, []Argument{Argument{"bar", String32}, Argument{"baz", String}}, nil}
m := Method{"foo", false, []Argument{Argument{"bar", String32, false}, Argument{"baz", String, false}}, nil}
exp := "foo(string32,string)"
if m.Sig() != exp {
t.Error("signature mismatch", exp, "!=", m.Sig())
@ -250,7 +250,7 @@ func TestMethodSignature(t *testing.T) {
}
uintt, _ := NewType("uint")
m = Method{"foo", false, []Argument{Argument{"bar", uintt}}, nil}
m = Method{"foo", false, []Argument{Argument{"bar", uintt, false}}, nil}
exp = "foo(uint256)"
if m.Sig() != exp {
t.Error("signature mismatch", exp, "!=", m.Sig())
@ -367,8 +367,8 @@ func ExampleJSON() {
func TestBytes(t *testing.T) {
const definition = `[
{ "name" : "balance", "const" : true, "inputs" : [ { "name" : "address", "type" : "bytes20" } ] },
{ "name" : "send", "const" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] }
{ "type" : "function", "name" : "balance", "const" : true, "inputs" : [ { "name" : "address", "type" : "bytes20" } ] },
{ "type" : "function", "name" : "send", "const" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] }
]`
abi, err := JSON(strings.NewReader(definition))
@ -396,10 +396,8 @@ func TestBytes(t *testing.T) {
func TestReturn(t *testing.T) {
const definition = `[
{ "name" : "balance", "const" : true, "inputs" : [], "outputs" : [ { "name": "", "type": "hash" } ] },
{ "name" : "name", "const" : true, "inputs" : [], "outputs" : [ { "name": "", "type": "address" } ] }
]`
{ "type" : "function", "name" : "balance", "const" : true, "inputs" : [], "outputs" : [ { "name": "", "type": "hash" } ] },
{ "type" : "function", "name" : "name", "const" : true, "inputs" : [], "outputs" : [ { "name": "", "type": "address" } ] }]`
abi, err := JSON(strings.NewReader(definition))
if err != nil {
@ -424,3 +422,39 @@ func TestReturn(t *testing.T) {
t.Errorf("expected type common.Address, got %T", r)
}
}
func TestDefaultFunctionParsing(t *testing.T) {
const definition = `[{ "name" : "balance" }]`
abi, err := JSON(strings.NewReader(definition))
if err != nil {
t.Fatal(err)
}
if _, ok := abi.Methods["balance"]; !ok {
t.Error("expected 'balance' to be present")
}
}
func TestBareEvents(t *testing.T) {
const definition = `[
{ "type" : "event", "name" : "balance" },
{ "type" : "event", "name" : "name" }]`
abi, err := JSON(strings.NewReader(definition))
if err != nil {
t.Fatal(err)
}
if len(abi.Events) != 2 {
t.Error("expected 2 events")
}
if _, ok := abi.Events["balance"]; !ok {
t.Error("expected 'balance' event to be present")
}
if _, ok := abi.Events["name"]; !ok {
t.Error("expected 'name' event to be present")
}
}