From dfb1415d5eaf006ee45235f275d17f52d3db38e5 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Mon, 18 May 2020 12:06:16 +0300
Subject: Add dump(ostream,script::lines) (partial implementation)

---
 libbuild2/token.hxx | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

(limited to 'libbuild2/token.hxx')

diff --git a/libbuild2/token.hxx b/libbuild2/token.hxx
index c950ea3..c486193 100644
--- a/libbuild2/token.hxx
+++ b/libbuild2/token.hxx
@@ -84,13 +84,30 @@ namespace build2
 
   class token;
 
+  enum class print_mode
+  {
+    // Print eos, newline, and pair separator in the <name> form and other
+    // tokens as literals, single-quoting the word token.
+    //
+    normal,
+
+    // Same as normal but all literals are quoted.
+    //
+    diagnostics,
+
+    // Print all tokens as literals with newline represented as '\n' and eos
+    // as an empty string.
+    //
+    raw
+  };
+
   LIBBUILD2_SYMEXPORT void
-  token_printer (ostream&, const token&, bool);
+  token_printer (ostream&, const token&, print_mode);
 
   class token
   {
   public:
-    using printer_type = void (ostream&, const token&, bool diag);
+    using printer_type = void (ostream&, const token&, print_mode);
 
     token_type type;
     bool separated; // Whitespace-separated from the previous token.
@@ -145,7 +162,11 @@ namespace build2
   // Output the token value in a format suitable for diagnostics.
   //
   inline ostream&
-  operator<< (ostream& o, const token& t) {t.printer (o, t, true); return o;}
+  operator<< (ostream& o, const token& t)
+  {
+    t.printer (o, t, print_mode::diagnostics);
+    return o;
+  }
 
   // Context-dependent lexing (see lexer_mode for details).
   //
-- 
cgit v1.1