diff options
Diffstat (limited to 'core/vm/stack_table.go')
-rw-r--r-- | core/vm/stack_table.go | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/core/vm/stack_table.go b/core/vm/stack_table.go index a4b1cfcd8..10c12901a 100644 --- a/core/vm/stack_table.go +++ b/core/vm/stack_table.go @@ -17,28 +17,26 @@ package vm import ( - "fmt" - "github.com/ethereum/go-ethereum/params" ) -func makeStackFunc(pop, push int) stackValidationFunc { - return func(stack *Stack) error { - if err := stack.require(pop); err != nil { - return err - } - - if stack.len()+push-pop > int(params.StackLimit) { - return fmt.Errorf("stack limit reached %d (%d)", stack.len(), params.StackLimit) - } - return nil - } +func minSwapStack(n int) int { + return minStack(n, n) +} +func maxSwapStack(n int) int { + return maxStack(n, n) } -func makeDupStackFunc(n int) stackValidationFunc { - return makeStackFunc(n, n+1) +func minDupStack(n int) int { + return minStack(n, n+1) +} +func maxDupStack(n int) int { + return maxStack(n, n+1) } -func makeSwapStackFunc(n int) stackValidationFunc { - return makeStackFunc(n, n) +func maxStack(pop, push int) int { + return int(params.StackLimit) + pop - push +} +func minStack(pops, push int) int { + return pops } |