Initial revision

lang/cem/cpp.ansi/skip.c

@@ -0,0 +1,77 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
+/* $Header$ */
+/* PREPROCESSOR: INPUT SKIP FUNCTIONS */
+
+#include	"arith.h"
+#include	"LLlex.h"
+#include	"class.h"
+#include	"input.h"
+
+extern int InputLevel;
+
+int
+skipspaces(ch, skipnl)
+	register int ch;
+{
+	/*	skipspaces() skips any white space and returns the first
+		non-space character.
+	*/
+	register int nlseen = 0;
+
+	for (;;) {
+		while (class(ch) == STSKIP)
+			ch = GetChar();
+		if (skipnl && class(ch) == STNL) {
+			ch = GetChar();
+			LineNumber++;
+			nlseen++;
+			continue;
+		}
+		if (ch == TOKSEP && InputLevel) {
+			ch = GetChar();
+			continue;
+		}
+
+		/* \\\n are handled by trigraph */
+
+		if (ch == '/') {
+			ch = GetChar();
+			if (ch == '*' && !InputLevel) {
+				skipcomment();
+				ch = GetChar();
+			}
+			else	{
+				UnGetChar();
+				return '/';
+			}
+		}
+		else if (nlseen && ch == '#') {
+			domacro();
+			ch = GetChar();
+		} else
+			return ch;
+	}
+}
+
+SkipToNewLine(garbage)
+	int garbage;
+{
+	register int ch;
+	register int pstrict = 0;
+
+	while ((ch = GetChar()) != '\n') {
+		if (ch == '/') {
+			if ((ch = GetChar()) == '*' && !InputLevel) {
+				skipcomment();
+				continue;
+			}
+		}
+		if (garbage && !is_wsp(ch))
+			pstrict = 1;
+	}
+	++LineNumber;
+	return pstrict;
+}