Thanos did someting

[bytom/vapor.git] / equity / compiler / optimize.go

diff --git a/equity/compiler/optimize.go b/equity/compiler/optimize.go
deleted file mode 100644 (file)
index f05cac4..0000000
--- a/equity/compiler/optimize.go
+++ /dev/null
@@ -1,64 +0,0 @@
-package compiler
-
-import "strings"
-
-var optimizations = []struct {
-       before, after string
-}{
-       {"0 ROLL", ""},
-       {"0 PICK", "DUP"},
-       {"1 ROLL", "SWAP"},
-       {"1 PICK", "OVER"},
-       {"2 ROLL", "ROT"},
-       {"TRUE VERIFY", ""},
-       {"SWAP SWAP", ""},
-       {"OVER OVER", "2DUP"},
-       {"SWAP OVER", "TUCK"},
-       {"DROP DROP", "2DROP"},
-       {"SWAP DROP", "NIP"},
-       {"5 ROLL 5 ROLL", "2ROT"},
-       {"3 PICK 3 PICK", "2OVER"},
-       {"3 ROLL 3 ROLL", "2SWAP"},
-       {"2 PICK 2 PICK 2 PICK", "3DUP"},
-       {"1 ADD", "1ADD"},
-       {"1 SUB", "1SUB"},
-       {"EQUAL VERIFY", "EQUALVERIFY"},
-       {"SWAP TXSIGHASH ROT", "TXSIGHASH SWAP"},
-       {"SWAP EQUAL", "EQUAL"},
-       {"SWAP EQUALVERIFY", "EQUALVERIFY"},
-       {"SWAP ADD", "ADD"},
-       {"SWAP BOOLAND", "BOOLAND"},
-       {"SWAP BOOLOR", "BOOLOR"},
-       {"SWAP MIN", "MIN"},
-       {"SWAP MAX", "MAX"},
-       {"DUP 2 PICK EQUAL", "2DUP EQUAL"},
-       {"DUP 2 PICK EQUALVERIFY", "2DUP EQUALVERIFY"},
-       {"DUP 2 PICK ADD", "2DUP ADD"},
-       {"DUP 2 PICK BOOLAND", "2DUP BOOLAND"},
-       {"DUP 2 PICK BOOLOR", "2DUP BOOLOR"},
-       {"DUP 2 PICK MIN", "2DUP MIN"},
-       {"DUP 2 PICK MAX", "2DUP MAX"},
-}
-
-func optimize(opcodes string) string {
-       opcodes = " " + opcodes + " "
-       looping := true
-       for looping {
-               looping = false
-               for _, o := range optimizations {
-                       before := " " + o.before + " "
-                       var after string
-                       if o.after == "" {
-                               after = " "
-                       } else {
-                               after = " " + o.after + " "
-                       }
-                       newOpcodes := strings.Replace(opcodes, before, after, -1)
-                       if newOpcodes != opcodes {
-                               looping = true
-                               opcodes = newOpcodes
-                       }
-               }
-       }
-       return strings.TrimSpace(opcodes)
-}