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Remove template matching and pseudo opcodes

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The current code contains a rather complex script template matching engine,
which is only used for 3 particular script types (P2PK, P2PKH, multisig).
The first two of these are trivial to match for otherwise, and a specialized
matcher for multisig is both more compact and more efficient than a generic
one.

The goal is being more flexible, so that for example larger standard multisigs
inside SegWit outputs are more easy to implement.

As a side-effect, it also gets rid of the pseudo opcodes hack.
This commit is contained in:
Pieter Wuille 2018-05-08 20:24:06 -07:00
parent 6b824c090f
commit c814e2e7e8
4 changed files with 69 additions and 106 deletions
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5
src/script/script.cpp
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@ -141,11 +141,6 @@ const char* GetOpName(opcodetype opcode)
case OP_INVALIDOPCODE : return "OP_INVALIDOPCODE";
// Note:
// The template matching params OP_SMALLINTEGER/etc are defined in opcodetype enum
// as kind of implementation hack, they are *NOT* real opcodes. If found in real
// Script, just let the default: case deal with them.
default:
return "OP_UNKNOWN";
}