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- /*
- ** $Id: lpvm.h,v 1.3 2014/02/21 13:06:41 roberto Exp $
- */
-
- #if !defined(lpvm_h)
- #define lpvm_h
-
- #include "lpcap.h"
-
-
- /* Virtual Machine's instructions */
- typedef enum Opcode {
- IAny, /* if no char, fail */
- IChar, /* if char != aux, fail */
- ISet, /* if char not in buff, fail */
- ITestAny, /* in no char, jump to 'offset' */
- ITestChar, /* if char != aux, jump to 'offset' */
- ITestSet, /* if char not in buff, jump to 'offset' */
- ISpan, /* read a span of chars in buff */
- IBehind, /* walk back 'aux' characters (fail if not possible) */
- IRet, /* return from a rule */
- IEnd, /* end of pattern */
- IChoice, /* stack a choice; next fail will jump to 'offset' */
- IJmp, /* jump to 'offset' */
- ICall, /* call rule at 'offset' */
- IOpenCall, /* call rule number 'key' (must be closed to a ICall) */
- ICommit, /* pop choice and jump to 'offset' */
- IPartialCommit, /* update top choice to current position and jump */
- IBackCommit, /* "fails" but jump to its own 'offset' */
- IFailTwice, /* pop one choice and then fail */
- IFail, /* go back to saved state on choice and jump to saved offset */
- IGiveup, /* internal use */
- IFullCapture, /* complete capture of last 'off' chars */
- IOpenCapture, /* start a capture */
- ICloseCapture,
- ICloseRunTime
- } Opcode;
-
-
-
- typedef union Instruction {
- struct Inst {
- byte code;
- byte aux;
- short key;
- } i;
- int offset;
- byte buff[1];
- } Instruction;
-
-
- void printpatt (Instruction *p, int n);
- const char *match (lua_State *L, const char *o, const char *s, const char *e,
- Instruction *op, Capture *capture, int ptop);
-
-
- #endif
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