Merge #12885: Reduce implementation code inside CScript

54a5a21 [MOVEONLY] Turn CScript::GetOp2 into a function and move to cpp (Pieter Wuille)
6a7456a [MOVEONLY] Move CSCript::FindAndDelete to interpreter (Pieter Wuille)
33a8ecf Delete unused non-const-iterator CSCript::GetOp overloads (Pieter Wuille)
2fb168b Make iterators in CScript::FindAndDelete const (Pieter Wuille)

Pull request description:

  This PR moves `FindAndDelete` and `GetOp2` out of CScript (the first is only used inside the interpreter and moved there, the second does not actually depend on any script specifics and works on any vector). Furthermore, all non-const-iterator versions of GetOp are replaced by const ones, removing a number of methods in the process.

  The longer term goal here is making the script interpreter independent from the CScript representation.

  Note for reviewers: both `FindAndDelete` and `GetScriptOp` are consensus critical.

Tree-SHA512: c4ccf91c0b33c37cff0d474aa8dd2dab25b5b7655e2ed69a9b15e29daf0a67b21d51c23e1defb3a72ec762bd6138de96f69c6db1fb9c1fe1e976e421261aedb7

2 files changed, 17 insertions, 17 deletions

diff --git a/src/test/script_tests.cpp b/src/test/script_tests.cpp
index a06b573b37..068f1e66f4 100644
--- a/src/test/script_tests.cpp
+++ b/src/test/script_tests.cpp
@@ -1349,43 +1349,43 @@ BOOST_AUTO_TEST_CASE(script_FindAndDelete)
     s = CScript() << OP_1 << OP_2;
     d = CScript(); // delete nothing should be a no-op
     expect = s;
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 0);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 0);
     BOOST_CHECK(s == expect);
 
     s = CScript() << OP_1 << OP_2 << OP_3;
     d = CScript() << OP_2;
     expect = CScript() << OP_1 << OP_3;
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 1);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 1);
     BOOST_CHECK(s == expect);
 
     s = CScript() << OP_3 << OP_1 << OP_3 << OP_3 << OP_4 << OP_3;
     d = CScript() << OP_3;
     expect = CScript() << OP_1 << OP_4;
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 4);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 4);
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("0302ff03"); // PUSH 0x02ff03 onto stack
     d = ScriptFromHex("0302ff03");
     expect = CScript();
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 1);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 1);
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("0302ff030302ff03"); // PUSH 0x2ff03 PUSH 0x2ff03
     d = ScriptFromHex("0302ff03");
     expect = CScript();
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 2);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 2);
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("0302ff030302ff03");
     d = ScriptFromHex("02");
     expect = s; // FindAndDelete matches entire opcodes
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 0);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 0);
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("0302ff030302ff03");
     d = ScriptFromHex("ff");
     expect = s;
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 0);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 0);
     BOOST_CHECK(s == expect);
 
     // This is an odd edge case: strip of the push-three-bytes
@@ -1393,44 +1393,44 @@ BOOST_AUTO_TEST_CASE(script_FindAndDelete)
     s = ScriptFromHex("0302ff030302ff03");
     d = ScriptFromHex("03");
     expect = CScript() << ParseHex("ff03") << ParseHex("ff03");
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 2);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 2);
     BOOST_CHECK(s == expect);
 
     // Byte sequence that spans multiple opcodes:
     s = ScriptFromHex("02feed5169"); // PUSH(0xfeed) OP_1 OP_VERIFY
     d = ScriptFromHex("feed51");
     expect = s;
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 0); // doesn't match 'inside' opcodes
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 0); // doesn't match 'inside' opcodes
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("02feed5169"); // PUSH(0xfeed) OP_1 OP_VERIFY
     d = ScriptFromHex("02feed51");
     expect = ScriptFromHex("69");
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 1);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 1);
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("516902feed5169");
     d = ScriptFromHex("feed51");
     expect = s;
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 0);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 0);
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("516902feed5169");
     d = ScriptFromHex("02feed51");
     expect = ScriptFromHex("516969");
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 1);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 1);
     BOOST_CHECK(s == expect);
 
     s = CScript() << OP_0 << OP_0 << OP_1 << OP_1;
     d = CScript() << OP_0 << OP_1;
     expect = CScript() << OP_0 << OP_1; // FindAndDelete is single-pass
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 1);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 1);
     BOOST_CHECK(s == expect);
 
     s = CScript() << OP_0 << OP_0 << OP_1 << OP_0 << OP_1 << OP_1;
     d = CScript() << OP_0 << OP_1;
     expect = CScript() << OP_0 << OP_1; // FindAndDelete is single-pass
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 2);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 2);
     BOOST_CHECK(s == expect);
 
     // Another weird edge case:
@@ -1438,13 +1438,13 @@ BOOST_AUTO_TEST_CASE(script_FindAndDelete)
     s = ScriptFromHex("0003feed");
     d = ScriptFromHex("03feed"); // ... can remove the invalid push
     expect = ScriptFromHex("00");
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 1);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 1);
     BOOST_CHECK(s == expect);
 
     s = ScriptFromHex("0003feed");
     d = ScriptFromHex("00");
     expect = ScriptFromHex("03feed");
-    BOOST_CHECK_EQUAL(s.FindAndDelete(d), 1);
+    BOOST_CHECK_EQUAL(FindAndDelete(s, d), 1);
     BOOST_CHECK(s == expect);
 }
 
diff --git a/src/test/sighash_tests.cpp b/src/test/sighash_tests.cpp
index a2bd8998b1..6b8856ef47 100644
--- a/src/test/sighash_tests.cpp
+++ b/src/test/sighash_tests.cpp
@@ -35,7 +35,7 @@ uint256 static SignatureHashOld(CScript scriptCode, const CTransaction& txTo, un
 
     // In case concatenating two scripts ends up with two codeseparators,
     // or an extra one at the end, this prevents all those possible incompatibilities.
-    scriptCode.FindAndDelete(CScript(OP_CODESEPARATOR));
+    FindAndDelete(scriptCode, CScript(OP_CODESEPARATOR));
 
     // Blank out other inputs' signatures
     for (unsigned int i = 0; i < txTmp.vin.size(); i++)