btcsuite / btcd / 9984164707

57%

master: 55%

Build Type

Pull #2216

github

Committed by Roasbeef

Commit Message

txscript: add new ScriptTemplate DSL for writing Scripts

In this commit, we add a new function, `ScriptTemplate` to make the
process of making custom Bitcoin scripts a bit less verbose.

ScriptTemplate processes a script template with parameters and returns the
corresponding script bytes. This functions allows Bitcoin scripts to be
created using a DSL-like syntax, based on Go's templating system.

An example of a simple p2pkh template would be:

   `OP_DUP OP_HASH160 0x14e8948c7 OP_EQUALVERIFY OP_CHECKSIG`

Strings that have the `0x` prefix are assumed to byte strings to be pushed
ontop of the stack. Integers can be passed as normal. If a value can't be
parsed as an integer, then it's assume that it's a byte slice without the 0x
prefix.

Normal go template operations can be used as well. The params argument
houses paramters to pass into the script, for example a local variable
storing a computed public key.

Pull Request Pull Request #2216: txscript: add new ScriptTemplate DSL for writing Scripts

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