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Added framework for implementing HParser-to-RVM compiler

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This commit is contained in:
Dan Hirsch 2013-03-17 19:56:43 -07:00
parent 4862dd244d
commit 4c2a536151
2 changed files with 16 additions and 1 deletions
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16
src/backends/regex.h
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@ -27,7 +27,7 @@ typedef struct HRVMInsn_{
uint16_t arg;
} HRVMInsn;
const HTokenType TT_MARK = TT_RESERVED_1;
#define TT_MARK TT_RESERVED_1
typedef struct HSVMContext_ {
HParsedToken **stack;
@ -49,7 +49,21 @@ typedef struct HRVMProg_ {
HSVMAction *actions;
} HRVMProg;
// Returns true IFF the provided parser could be compiled.
bool h_compile_regex(HRVMProg *prog, const HParser* parser);
// These functions are used by the compile_to_rvm method of HParser
uint16_t h_rvm_create_action(HRVMProg *prog, HSVMAction *action);
// returns the address of the instruction just created
uint16_t h_rvm_insert_insn(HRVMProg *prog, HRVMOp op, uint16_t arg);
// returns the address of the next insn to be created.
uint16_t h_rvm_get_ip(HRVMProg *prog);
// Used to insert forward references; the idea is to generate a JUMP
// or FORK instruction with a target of 0, then update it once the
// correct target is known.
void h_rvm_patch_arg(HRVMProg *prog, uint16_t ip, uint16_t new_val);
#endif