ack/lang/m2/comp/defmodule.c
1986-06-26 09:39:36 +00:00

81 lines
1.6 KiB
C

/* D E F I N I T I O N M O D U L E S */
#ifndef NORCSID
static char *RcsId = "$Header$";
#endif
#include "debug.h"
#include <assert.h>
#include <em_arith.h>
#include <em_label.h>
#include "idf.h"
#include "input.h"
#include "scope.h"
#include "def.h"
#include "LLlex.h"
#include "f_info.h"
#include "main.h"
#ifdef DEBUG
long sys_filesize();
#endif
GetFile(name)
char *name;
{
/* Try to find a file with basename "name" and extension ".def",
in the directories mentioned in "DEFPATH".
*/
char buf[256];
char *strcpy(), *strcat();
strcpy(buf, name);
buf[10] = '\0'; /* maximum length */
strcat(buf, ".def");
if (! InsertFile(buf, DEFPATH, &(FileName))) {
fatal("Could'nt find a DEFINITION MODULE for \"%s\"", name);
}
LineNumber = 1;
DO_DEBUG(options['F'], debug("File %s : %ld characters", FileName, sys_filesize(FileName)));
}
struct def *
GetDefinitionModule(id)
struct idf *id;
{
/* Return a pointer to the "def" structure of the definition
module indicated by "id".
We may have to read the definition module itself.
*/
struct def *df;
static int level;
level++;
df = lookup(id, GlobalScope);
if (!df) {
/* Read definition module. Make an exception for SYSTEM.
*/
if (!strcmp(id->id_text, "SYSTEM")) {
do_SYSTEM();
}
else {
GetFile(id->id_text);
DefModule();
if (level == 1) {
/* The module is directly imported by the
currently defined module, so we have to
remember its name because we have to call
its initialization routine
*/
AddModule(id);
}
}
df = lookup(id, GlobalScope);
}
assert(df != 0 && df->df_kind == D_MODULE);
level--;
return df;
}