num_exp: RPN calculator

[m6w6/ext-psi] / src / types / num_exp.h

diff --git a/src/types/num_exp.h b/src/types/num_exp.h
index e1b3b223beab9635c27e86fd490ebfaea9fa095b..ba44807020a44edbcf28febacc2648bd927cba2a 100644 (file)
--- a/src/types/num_exp.h
+++ b/src/types/num_exp.h
@@ -23,39 +23,72 @@
  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *******************************************************************************/
 
-#ifndef PSI_TYPES_NUM_EXP
-#define PSI_TYPES_NUM_EXP
+#ifndef PSI_TYPES_NUM_EXP_H
+#define PSI_TYPES_NUM_EXP_H
 
 #include "token.h"
+#include "Zend/zend_types.h"
 
-#include "constant.h"
-#include "decl_var.h"
-#include "impl_val.h"
+struct psi_data;
+struct psi_token;
+struct psi_impl;
+struct psi_const;
+struct psi_decl_enum_item;
+struct psi_let_exp;
+struct psi_set_exp;
+struct psi_call_frame;
 
-typedef struct num_exp {
+struct psi_num_exp {
        struct psi_token *token;
-       token_t t;
+       token_t op;
        union {
-               char *numb;
-               constant *cnst;
-               decl_var *dvar;
-               struct decl_enum_item *enm;
-       } u;
-       token_t operator;
-       int (*calculator)(int t1, impl_val *v1, int t2, impl_val *v2, impl_val *res);
-       struct num_exp *operand;
-} num_exp;
-
-num_exp *init_num_exp(token_t t, void *num);
-num_exp *copy_num_exp(num_exp *exp);
-void free_num_exp(num_exp *exp);
-void dump_num_exp(int fd, num_exp *exp);
+               struct {
+                       struct psi_num_exp *lhs;
+                       struct psi_num_exp *rhs;
+               } b;
+               struct psi_num_exp *u;
+               struct psi_number *n;
+       } data;
+       token_t (*calc)(token_t t1, impl_val *v1, token_t t2, impl_val *v2, impl_val *res);
+};
 
-struct psi_data;
-struct decl_args;
-struct decl_arg;
-struct decl_enum;
+struct psi_num_exp *psi_num_exp_init_binary(token_t op,
+               struct psi_num_exp *lhs, struct psi_num_exp *rhs);
+struct psi_num_exp *psi_num_exp_init_unary(token_t op,
+               struct psi_num_exp *u);
+struct psi_num_exp *psi_num_exp_init_num(struct psi_number *n);
+void psi_num_exp_free(struct psi_num_exp **c_ptr);
+
+struct psi_num_exp *psi_num_exp_copy(struct psi_num_exp *exp);
+void psi_num_exp_dump(int fd, struct psi_num_exp *exp);
+bool psi_num_exp_validate(struct psi_data *data, struct psi_num_exp *exp,
+               struct psi_impl *impl, struct psi_decl *cb_decl,
+               struct psi_let_exp *current_let, struct psi_set_exp *current_set,
+               struct psi_decl_enum *current_enum);
+
+token_t psi_num_exp_exec(struct psi_num_exp *exp, impl_val *res, struct psi_call_frame *frame);
+
+#include <assert.h>
+
+static inline zend_long psi_long_num_exp(struct psi_num_exp *exp, struct psi_call_frame *frame) {
+       impl_val val = {0};
+
+       switch (psi_num_exp_exec(exp, &val, frame)) {
+       case PSI_T_UINT8:       return val.u8;
+       case PSI_T_UINT16:      return val.u16;
+       case PSI_T_UINT32:      return val.u32;
+       case PSI_T_UINT64:      return val.u64; /* FIXME */
+       case PSI_T_INT8:        return val.i8;
+       case PSI_T_INT16:       return val.i16;
+       case PSI_T_INT32:       return val.i32;
+       case PSI_T_INT64:       return val.i64;
+       case PSI_T_FLOAT:       return val.fval;
+       case PSI_T_DOUBLE:      return val.dval;
+       default:
+               assert(0);
+       }
+       return 0;
+}
 
-int validate_num_exp(struct psi_data *data, num_exp *exp, struct decl_args *dargs, struct decl_arg *func, struct decl_enum *enm);
 
 #endif