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accounts/abi/bind: add optional block number for calls

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This commit is contained in:
Dragan Milic 2018-10-18 16:30:22 +01:00
parent 735343430d
commit 63a70a690d
1 changed files with 6 additions and 6 deletions
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6
accounts/abi/bind/base.go
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@ -38,7 +38,7 @@ type SignerFn func(types.Signer, common.Address, *types.Transaction) (*types.Tra
type CallOpts struct { type CallOpts struct {
Pending bool // Whether to operate on the pending state or the last known one Pending bool // Whether to operate on the pending state or the last known one
From common.Address // Optional the sender address, otherwise the first account is used From common.Address // Optional the sender address, otherwise the first account is used
BlockNumber *big.Int // Optional the block number on which the call should be performed
Context context.Context // Network context to support cancellation and timeouts (nil = no timeout) Context context.Context // Network context to support cancellation and timeouts (nil = no timeout)
} }
@ -148,10 +148,10 @@ func (c *BoundContract) Call(opts *CallOpts, result interface{}, method string,
} }
} }
} else { } else {
output, err = c.caller.CallContract(ctx, msg, nil) output, err = c.caller.CallContract(ctx, msg, opts.BlockNumber)
if err == nil && len(output) == 0 { if err == nil && len(output) == 0 {
// Make sure we have a contract to operate on, and bail out otherwise. // Make sure we have a contract to operate on, and bail out otherwise.
if code, err = c.caller.CodeAt(ctx, c.address, nil); err != nil { if code, err = c.caller.CodeAt(ctx, c.address, opts.BlockNumber); err != nil {
return err return err
} else if len(code) == 0 { } else if len(code) == 0 {
return ErrNoCode return ErrNoCode