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#include "common.h"
/*************/
/* EXPR TREE */
/*************/
enum exprkind {
EXXX, ENUMLIT, ESTRLIT, ESYM, EINIT, EGETF, ECALL, ECOND,
/* unary */
EPLUS, ENEG, ECOMPL, ELOGNOT, EDEREF, EADDROF, ECAST,
EPREINC, EPOSTINC, EPREDEC, EPOSTDEC,
/* binary */
EADD, ESUB, EMUL, EDIV, EREM, EBAND, EBIOR, EXOR, ESHL, ESHR,
ELOGAND, ELOGIOR,
EEQU, ENEQ, ELTH, EGTH, ELTE, EGTE,
ESET, ESETADD, ESETSUB, ESETMUL, ESETDIV, ESETREM, ESETAND, ESETIOR, ESETXOR, ESETSHL, ESETSHR,
ESEQ,
};
#define isunop(t) in_range(t, EPLUS, EPOSTDEC)
#define isbinop(t) in_range(t, EADD, ESEQ)
#define isassign(t) in_range(t, ESET, ESETSHR)
#define assigntobinop(t) ((t) - ESETADD + EADD)
struct expr {
uchar t;
uchar qual;
ushort narg; /* ECALL */
union type ty;
struct span span;
union {
struct {
struct expr *sub;
struct {
ushort off;
uchar bitsiz, bitoff;
} fld; /* EGETF */
};
uvlong u; vlong i; double f; /* ENUMLIT */
struct bytes s; /* ESTRLIT */
struct decl *sym; /* ESYM */
struct initializer *ini; /* EINIT */
};
};
enum evalmode {
EVINTCONST,
EVARITH,
EVSTATICINI,
EVFOLD,
};
bool eval(struct expr *, enum evalmode);
/* vim:set ts=3 sw=3 expandtab: */
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