| Don Newton | 379ae25 | 2019-04-01 12:17:06 -0400 | [diff] [blame^] | 1 | package utilities |
| 2 | |
| 3 | // An OpCode is a opcode of compiled path patterns. |
| 4 | type OpCode int |
| 5 | |
| 6 | // These constants are the valid values of OpCode. |
| 7 | const ( |
| 8 | // OpNop does nothing |
| 9 | OpNop = OpCode(iota) |
| 10 | // OpPush pushes a component to stack |
| 11 | OpPush |
| 12 | // OpLitPush pushes a component to stack if it matches to the literal |
| 13 | OpLitPush |
| 14 | // OpPushM concatenates the remaining components and pushes it to stack |
| 15 | OpPushM |
| 16 | // OpConcatN pops N items from stack, concatenates them and pushes it back to stack |
| 17 | OpConcatN |
| 18 | // OpCapture pops an item and binds it to the variable |
| 19 | OpCapture |
| 20 | // OpEnd is the least positive invalid opcode. |
| 21 | OpEnd |
| 22 | ) |