add OP_PUSHCONST

include/picconf.h

@@ -14,6 +14,7 @@
 #define PIC_IREP_SIZE 256
 #define PIC_GLOBALS_SIZE 1024
 #define PIC_SYM_TBL_SIZE 128
+#define PIC_POOL_SIZE 1024
 
 /* enable all debug flags */
 #define DEBUG 1

include/picrin.h

@@ -34,6 +34,8 @@ typedef struct {
   size_t glen, gcapa;
   struct pic_irep **irep;
   size_t ilen, icapa;
+  pic_value *pool;
+  size_t plen, pcapa;
 
   jmp_buf *jmp;
   const char *errmsg;

include/picrin/irep.h

@@ -7,6 +7,7 @@ enum pic_opcode {
   OP_PUSHTRUE,
   OP_PUSHFALSE,
   OP_PUSHNUM,
+  OP_PUSHCONST,
   OP_GREF,
   OP_GSET,
   OP_LREF,