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accounts/abi: Prevent recalculation of internal fields (#20895)

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* accounts/abi: prevent recalculation of ID, Sig and String

* accounts/abi: fixed unpacking of no values

* accounts/abi: multiple fixes to arguments

* accounts/abi: refactored methodName and eventName

This commit moves the complicated logic of how we assign method names
and event names if they already exist into their own functions for
better readability.

* accounts/abi: prevent recalculation of internal

In this commit, I changed the way we calculate the string
representations, sig representations and the id's of methods. Before
that these fields would be recalculated everytime someone called .Sig()
.String() or .ID() on a method or an event.

Additionally this commit fixes issue #20856 as we assign names to inputs
with no name (input with name "" becomes "arg0")

* accounts/abi: added unnamed event params test

* accounts/abi: fixed rebasing errors in method sig

* accounts/abi: fixed rebasing errors in method sig

* accounts/abi: addressed comments

* accounts/abi: added FunctionType enumeration

* accounts/abi/bind: added test for unnamed arguments

* accounts/abi: improved readability in NewMethod, nitpicks

* accounts/abi: method/eventName -> overloadedMethodName
This commit is contained in:
Marius van der Wijden
2020-04-20 09:01:04 +02:00
committed by GitHub
parent ca22d0761b
commit ac9c03f910
14 changed files with 279 additions and 239 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
accounts/abi/bind/base.go
View File

@ -264,7 +264,7 @@ func (c *BoundContract) FilterLogs(opts *FilterOpts, name string, query ...[]int
opts = new(FilterOpts)
}
// Append the event selector to the query parameters and construct the topic set
query = append([][]interface{}{{c.abi.Events[name].ID()}}, query...)
query = append([][]interface{}{{c.abi.Events[name].ID}}, query...)
topics, err := makeTopics(query...)
if err != nil {
@ -313,7 +313,7 @@ func (c *BoundContract) WatchLogs(opts *WatchOpts, name string, query ...[]inter
opts = new(WatchOpts)
}
// Append the event selector to the query parameters and construct the topic set
query = append([][]interface{}{{c.abi.Events[name].ID()}}, query...)
query = append([][]interface{}{{c.abi.Events[name].ID}}, query...)
topics, err := makeTopics(query...)
if err != nil {

4
accounts/abi/bind/bind.go
View File

@ -639,9 +639,9 @@ func formatMethod(method abi.Method, structs map[string]*tmplStruct) string {
state = state + " "
}
identity := fmt.Sprintf("function %v", method.RawName)
if method.IsFallback {
if method.Type == abi.Fallback {
identity = "fallback"
} else if method.IsReceive {
} else if method.Type == abi.Receive {
identity = "receive"
}
return fmt.Sprintf("%s(%v) %sreturns(%v)", identity, strings.Join(inputs, ", "), state, strings.Join(outputs, ", "))

9
accounts/abi/bind/bind_test.go
View File

@ -199,7 +199,8 @@ var bindTests = []struct {
{"type":"event","name":"indexed","inputs":[{"name":"addr","type":"address","indexed":true},{"name":"num","type":"int256","indexed":true}]},
{"type":"event","name":"mixed","inputs":[{"name":"addr","type":"address","indexed":true},{"name":"num","type":"int256"}]},
{"type":"event","name":"anonymous","anonymous":true,"inputs":[]},
{"type":"event","name":"dynamic","inputs":[{"name":"idxStr","type":"string","indexed":true},{"name":"idxDat","type":"bytes","indexed":true},{"name":"str","type":"string"},{"name":"dat","type":"bytes"}]}
{"type":"event","name":"dynamic","inputs":[{"name":"idxStr","type":"string","indexed":true},{"name":"idxDat","type":"bytes","indexed":true},{"name":"str","type":"string"},{"name":"dat","type":"bytes"}]},
{"type":"event","name":"unnamed","inputs":[{"name":"","type":"uint256","indexed": true},{"name":"","type":"uint256","indexed":true}]}
]
`},
`
@ -249,6 +250,12 @@ var bindTests = []struct {
fmt.Println(event.Addr) // Make sure the reconstructed indexed fields are present
fmt.Println(res, str, dat, hash, err)
oit, err := e.FilterUnnamed(nil, []*big.Int{}, []*big.Int{})
arg0 := oit.Event.Arg0 // Make sure unnamed arguments are handled correctly
arg1 := oit.Event.Arg1 // Make sure unnamed arguments are handled correctly
fmt.Println(arg0, arg1)
}
// Run a tiny reflection test to ensure disallowed methods don't appear
if _, ok := reflect.TypeOf(&EventChecker{}).MethodByName("FilterAnonymous"); ok {