29 lines
559 B
Go
29 lines
559 B
Go
package vm
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import (
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"fmt"
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"github.com/ethereum/go-ethereum/params"
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)
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func makeStackFunc(pop, diff int) stackValidationFunc {
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return func(stack *Stack) error {
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if err := stack.require(pop); err != nil {
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return err
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}
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if int64(stack.len()+diff) > params.StackLimit.Int64() {
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return fmt.Errorf("stack limit reached %d (%d)", stack.len(), params.StackLimit)
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}
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return nil
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}
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}
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func makeDupStackFunc(n int) stackValidationFunc {
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return makeStackFunc(n, 1)
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}
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func makeSwapStackFunc(n int) stackValidationFunc {
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return makeStackFunc(n, 0)
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}
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