null.c

非常好的源码

#include "c.h"


static void address ARGS((Symbol, Symbol, int));
static void blockbeg0 ARGS((Env *));
static void blockend0 ARGS((Env *));
static void defaddress ARGS((Symbol));
static void defconst ARGS((int, Value));
static void defstring ARGS((int, char *,int));
static void defsymbol ARGS((Symbol));
static void emit0 ARGS((Node));
static void export ARGS((Symbol));
static void function ARGS((Symbol, Symbol [], Symbol [], int));
static Node gen0 ARGS((Node));
static void global ARGS((Symbol));
static void import ARGS((Symbol));
static void local ARGS((Symbol));
static void progbeg ARGS((int, char **));
static void progend ARGS((void));
static void segment ARGS((int));
static void space ARGS((int));

static Node gen0(Node p) { return p; }
static void address(Symbol q,Symbol p,int n){}
static void blockbeg0(Env *e){}
static void blockend0(Env *e) {}
static void defaddress(Symbol p) {}
static void defconst(int ty,int v) {}
static void defstring(int len,char *s,int siz) {}
static void defsymbol(Symbol p) {}
static void emit0(Node p) {}
static void export(Symbol p) {}
static void function(f, caller, callee, ncalls) Symbol f, caller[], callee[]; int ncalls; {}
static void global(Symbol p) {}
static void import(Symbol p) {}
static void local(Symbol p) {}
static void progbeg(int argc,char *argv[]) {}
static void progend(void) {}
static void segment(int s)  {}
static void space(int n) {}

Interface nullIR = {
	1, 1, 0,	/* char */
	2, 2, 0,	/* short */
	4, 4, 0,	/* int */
	4, 4, 1,	/* float */
	8, 8, 1,	/* double */
	4, 4, 0,	/* T* */
	0, 4, 0,	/* struct */
	1,		/* little_endian */
	0,		/* mulops_calls */
	0,		/* wants_callb */
	0,		/* wants_argb */
	1,		/* left_to_right */
	0,		/* wants_dag */
	address,
	blockbeg0,
	blockend0,
	defaddress,
	defconst,
	defstring,
	defsymbol,
	emit0,
	export,
	function,
	gen0,
	global,
	import,
	local,
	progbeg,
	progend,
	segment,
	space
};