From fe6f537b3e23ad201ba6236a6cedef2e565349a7 Mon Sep 17 00:00:00 2001
From: Helmut Eller <eller.helmut@gmail.com>
Date: Mon, 2 Jan 2017 12:33:55 +0100
Subject: [PATCH] Add support for multi-line ( comments

* fth/file.fth ((): Redefine.
(MULTI-LINE-COMMENT): New helper.

* fth/t_file.fth: Uncomment test for multi line comments.
---
 fth/file.fth   | 19 +++++++++++++++++++
 fth/t_file.fth | 12 ++++++------
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/fth/file.fth b/fth/file.fth
index b71edc5..6b0db20 100644
--- a/fth/file.fth
+++ b/fth/file.fth
@@ -61,6 +61,16 @@ create (LINE-TERMINATOR) \n c,
     0 2r> + c!        ( )
 ;
 
+: MULTI-LINE-COMMENT ( "comment<rparen>" -- )
+    BEGIN
+        >in @ ')' parse         ( >in c-addr len )
+        nip + >in @ =           ( delimiter-not-found? )
+    WHILE                       ( )
+        refill 0= IF EXIT THEN  ( )
+    REPEAT
+
+;
+
 }private
 
 \ This treats \n, \r\n, and \r as line terminator.  Reading is done
@@ -108,4 +118,13 @@ create (LINE-TERMINATOR) \n c,
     THEN
 ;
 
+: (  ( "comment<rparen>"  -- )
+    source-id
+    CASE
+        -1 OF postpone ( ENDOF
+        0  OF postpone ( ENDOF
+        multi-line-comment
+    ENDCASE
+; immediate
+
 privatize
diff --git a/fth/t_file.fth b/fth/t_file.fth
index f024926..10f434f 100644
--- a/fth/t_file.fth
+++ b/fth/t_file.fth
@@ -215,12 +215,12 @@ T{ FN2 R/W BIN OPEN-FILE SWAP DROP 0= -> FALSE }T
 T{ FN2 DELETE-FILE 0= -> FALSE }T
 
 \ ----------------------------------------------------------------------------
-\ TESTING multi-line ( comments
-\ 
-\ T{ ( 1 2 3
-\ 4 5 6
-\ 7 8 9 ) 11 22 33 -> 11 22 33 }T
-\ 
+TESTING multi-line ( comments
+
+T{ ( 1 2 3
+4 5 6
+7 8 9 ) 11 22 33 -> 11 22 33 }T
+
 \ ----------------------------------------------------------------------------
 TESTING SOURCE-ID (can only test it does not return 0 or -1)
 
-- 
2.20.1