shithub: scc

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cc1: Simplify icpp()

It is possible to use a single array to define all the predefined
macros instead of splitting between values or not valued macros.

--- a/src/cmd/cc/cc1/cpp.c

+++ b/src/cmd/cc/cc1/cpp.c

@@ -45,14 +45,22 @@

 void

 icpp(void)

 {

-	static char sdate[14], stime[11];

 	struct tm *tm;

 	time_t t;

-	static char **bp, *list[] = {

-		"__STDC__",

-		"__STDC_HOSTED__",

-		"__SCC__",

-		NULL

+	static char sdate[14], stime[11];

+	static struct {

+		char *name;

+		char *value;

+	} *bp, list[] = {

+		{"__STDC__", "1"},

+		{"__STDC_HOSTED__", "1"},

+		{"__SCC__", "1"},

+		{"__DATE__", sdate},

+		{"__TIME__", stime},

+		{"__STDC_VERSION__", STDC_VERSION},

+		{"__LINE__", NULL},

+		{"__FILE__", NULL},

+		{NULL, NULL}

 	};

 	t = time(NULL);

@@ -59,17 +67,12 @@

 	tm = localtime(&t);

 	strftime(sdate, sizeof(sdate), "\"%b %d %Y\"", tm);

 	strftime(stime, sizeof(stime), "\"%H:%M:%S\"", tm);

-	defdefine("__DATE__", sdate, "built-in");

-	defdefine("__TIME__", stime, "built-in");

-	defdefine("__STDC_VERSION__", STDC_VERSION, "built-in");

-	defdefine("__LINE__", NULL, "built-in");

-	defdefine("__FILE__", NULL, "built-in");

+	for (bp = list; bp->name; ++bp)

+		defdefine(bp->name, bp->value, "built-in");

+

 	symline = lookup(NS_CPP, "__LINE__", ALLOC);

 	symfile = lookup(NS_CPP, "__FILE__", ALLOC);

-

-	for (bp = list; *bp; ++bp)

-		defdefine(*bp, "1", "built-in");

 	ncmdlines = 0;

 }