diff options
Diffstat (limited to 'core/vm/interpreter.go')
| -rw-r--r-- | core/vm/interpreter.go | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/core/vm/interpreter.go b/core/vm/interpreter.go index 1e9202424..0f1b07342 100644 --- a/core/vm/interpreter.go +++ b/core/vm/interpreter.go @@ -48,7 +48,7 @@ type Config struct { type Interpreter interface { // Run loops and evaluates the contract's code with the given input data and returns // the return byte-slice and an error if one occurred. - Run(contract *Contract, input []byte) ([]byte, error) + Run(contract *Contract, input []byte, static bool) ([]byte, error) // CanRun tells if the contract, passed as an argument, can be // run by the current interpreter. This is meant so that the // caller can do something like: @@ -61,10 +61,6 @@ type Interpreter interface { // } // ``` CanRun([]byte) bool - // IsReadOnly reports if the interpreter is in read only mode. - IsReadOnly() bool - // SetReadOnly sets (or unsets) read only mode in the interpreter. - SetReadOnly(bool) } // EVMInterpreter represents an EVM interpreter @@ -125,7 +121,7 @@ func (in *EVMInterpreter) enforceRestrictions(op OpCode, operation operation, st // It's important to note that any errors returned by the interpreter should be // considered a revert-and-consume-all-gas operation except for // errExecutionReverted which means revert-and-keep-gas-left. -func (in *EVMInterpreter) Run(contract *Contract, input []byte) (ret []byte, err error) { +func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (ret []byte, err error) { if in.intPool == nil { in.intPool = poolOfIntPools.get() defer func() { @@ -138,6 +134,13 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte) (ret []byte, err in.evm.depth++ defer func() { in.evm.depth-- }() + // Make sure the readOnly is only set if we aren't in readOnly yet. + // This makes also sure that the readOnly flag isn't removed for child calls. + if readOnly && !in.readOnly { + in.readOnly = true + defer func() { in.readOnly = false }() + } + // Reset the previous call's return data. It's unimportant to preserve the old buffer // as every returning call will return new data anyway. in.returnData = nil @@ -263,13 +266,3 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte) (ret []byte, err func (in *EVMInterpreter) CanRun(code []byte) bool { return true } - -// IsReadOnly reports if the interpreter is in read only mode. -func (in *EVMInterpreter) IsReadOnly() bool { - return in.readOnly -} - -// SetReadOnly sets (or unsets) read only mode in the interpreter. -func (in *EVMInterpreter) SetReadOnly(ro bool) { - in.readOnly = ro -} |