d1944a942e
This completes the process of converting the ExtractPkScriptAddrs function to use the optimized extraction functions recently introduced as part of the typeOfScript conversion. In particular, this converts the detection for nulldata scripts, removes the slow path fallback code since it is the final case, and modifies the comment to call out the script version semantics. The following is a before and after comparison of analyzing both a typical standard script and a very large non-standard script: benchmark old ns/op new ns/op delta ----------------------------------------------------------------------- BenchmarkExtractPkScriptAddrsLarge 132400 44.4 -99.97% BenchmarkExtractPkScriptAddrs 1265 231 -81.74% benchmark old allocs new allocs delta ----------------------------------------------------------------------- BenchmarkExtractPkScriptAddrsLarge 1 0 -100.00% BenchmarkExtractPkScriptAddrs 5 2 -60.00% benchmark old bytes new bytes delta ----------------------------------------------------------------------- BenchmarkExtractPkScriptAddrsLarge 466944 0 -100.00% BenchmarkExtractPkScriptAddrs 1600 48 -97.00% |
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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.