1 files changed, 49 insertions, 0 deletions
diff --git a/unix/boot/spp/rpp/rpprat/lex.r b/unix/boot/spp/rpp/rpprat/lex.r
new file mode 100644
index 00000000..bc8f7a27
--- /dev/null
+++ b/unix/boot/spp/rpp/rpprat/lex.r
@@ -0,0 +1,49 @@
+#-h-  lex			  543  local   12/01/80  15:54:12
+# lex - return lexical type of token
+   include  defs
+
+   integer function lex (lexstr)
+   character lexstr (MAXTOK)
+
+   include COMMON_BLOCKS
+
+   character gnbtok, t, c
+
+   integer lookup, n
+   string sdefault "default"
+
+   for (lex = gnbtok (lexstr, MAXTOK);  lex == NEWLINE;
+        lex = gnbtok (lexstr, MAXTOK))
+      ;
+
+   if (lex == EOF | lex == SEMICOL | lex == LBRACE | lex == RBRACE)
+      return
+   if (lex == DIGIT)
+      lex = LEXDIGITS
+   else if (lex == TOGGLE)
+      lex = LEXLITERAL
+   else if (lex == XPP_DIRECTIVE)
+      lex = LEXDECL
+   else if (lookup (lexstr, lex, rkwtbl) == YES) {
+      if (lex == LEXDEFAULT) {				# "default:"
+	 n = -1
+	 repeat {
+	    c = ngetch (c)
+	    n = n + 1
+	 } until (c != BLANK & c != TAB)
+	 call putbak (c)
+
+	 t = gnbtok (lexstr, MAXTOK)
+	 call pbstr (lexstr)
+	 if (n > 0)
+	    call putbak (BLANK)
+	 call scopy (sdefault, 1, lexstr, 1)
+	 if (t != COLON)
+	    lex = LEXOTHER
+	 }
+      }
+   else
+      lex = LEXOTHER
+
+   return
+   end