5a24f508e3
This continues the process of converting the typeOfScript function to use a combination of raw script analysis and the new tokenizer instead of the far less efficient parsed opcodes. In particular, it converts the detection of stake generation scripts to use raw script analysis. In order to accomplish this, it introduces a new function named isStakeGenScript which makes of the recently added extractStakePubKeyHash and extractStakeScriptHash functions. The following is a before and after comparison of analyzing a large script: benchmark old ns/op new ns/op delta --------------------------------------------------------------------- BenchmarkIsStakeGenerationScript 121043 4.26 -100.00% benchmark old allocs new allocs delta --------------------------------------------------------------------- BenchmarkIsStakeGenerationScript 1 0 -100.00% benchmark old bytes new bytes delta --------------------------------------------------------------------- BenchmarkIsStakeGenerationScript 466944 0 -100.00% |
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| .. | ||
| data | ||
| bench_test.go | ||
| consensus_test.go | ||
| consensus.go | ||
| doc.go | ||
| engine_test.go | ||
| engine.go | ||
| error_test.go | ||
| error.go | ||
| example_test.go | ||
| go.mod | ||
| go.sum | ||
| log.go | ||
| opcode_test.go | ||
| opcode.go | ||
| README.md | ||
| reference_test.go | ||
| script_test.go | ||
| script.go | ||
| scriptbuilder_test.go | ||
| scriptbuilder.go | ||
| scriptnum_test.go | ||
| scriptnum.go | ||
| sigcache_test.go | ||
| sigcache.go | ||
| sighash_test.go | ||
| sighash.go | ||
| sign_test.go | ||
| sign.go | ||
| stack_test.go | ||
| stack.go | ||
| standard_test.go | ||
| standard.go | ||
| tokenizer_test.go | ||
| tokenizer.go | ||
txscript
Package txscript implements the Decred transaction script language. There is a comprehensive test suite.
This package has intentionally been designed so it can be used as a standalone package for any projects needing to use or validate Decred transaction scripts.
Decred Scripts
Decred provides a stack-based, FORTH-like language for the scripts in the Decred transactions. This language is not turing complete although it is still fairly powerful.
Installation and Updating
$ go get -u github.com/decred/dcrd/txscript
Examples
-
Standard Pay-to-pubkey-hash Script
Demonstrates creating a script which pays to a Decred address. It also prints the created script hex and uses the DisasmString function to display the disassembled script. -
Extracting Details from Standard Scripts
Demonstrates extracting information from a standard public key script. -
Manually Signing a Transaction Output
Demonstrates manually creating and signing a redeem transaction. -
Counting Opcodes in Scripts
Demonstrates creating a script tokenizer instance and using it to count the number of opcodes a script contains.
License
Package txscript is licensed under the copyfree ISC License.