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/script/lexer.test.cxx |  2 +-
 libbuild2/script/script.cxx     | 68 +++++++++++++++++++++++++++++++++++++++++
 libbuild2/script/script.hxx     |  3 ++
 libbuild2/script/token.cxx      |  6 ++--
 libbuild2/script/token.hxx      |  2 +-
 5 files changed, 76 insertions(+), 5 deletions(-)

(limited to 'libbuild2/script')

diff --git a/libbuild2/script/lexer.test.cxx b/libbuild2/script/lexer.test.cxx
index 85304ea..24fe335 100644
--- a/libbuild2/script/lexer.test.cxx
+++ b/libbuild2/script/lexer.test.cxx
@@ -45,7 +45,7 @@ namespace build2
         {
           // Print each token on a separate line without quoting operators.
           //
-          t.printer (cout, t, false);
+          t.printer (cout, t, print_mode::normal);
           cout << endl;
         }
       }
diff --git a/libbuild2/script/script.cxx b/libbuild2/script/script.cxx
index b5456f9..db34084 100644
--- a/libbuild2/script/script.cxx
+++ b/libbuild2/script/script.cxx
@@ -33,6 +33,74 @@ namespace build2
       return o << s;
     }
 
+    void
+    dump (ostream& os, const string& ind, const lines& ls)
+    {
+      for (const line& l: ls)
+      {
+        os << ind;
+
+        // @@ Should be across lines?
+        //
+        // We will consider mixed quoting as a double quoting since the
+        // information is lost and we won't be able to restore the token
+        // original representation.
+        //
+//        char qseq ('\0'); // Can be used as bool.
+
+        for (const replay_token& rt: l.tokens)
+        {
+          const token& t (rt.token);
+
+          // Left and right quotes (can be used as bool).
+          //
+          char lq ('\0');
+          char rq ('\0');
+
+          /*
+          if (t.qtype != quote_type::unquoted)
+          {
+            auto quote = [&t] ()
+            {
+              return t.qtype == quote_type::single ? '\'' : '"';
+            }
+
+            if (t.qcomp) // Complete quoting.
+            {
+              // If we are inside quoted token sequence then we do noting.
+              // Otherwise we just quote the token not starting a sequence.
+              //
+              if (!qseq)
+              {
+                lq = quote ();
+                rq = lq;
+              }
+            }
+            else         // Partial quoting.
+            {
+              if (!qseq)
+                lq =
+
+            }
+          }
+          */
+          // @@ Add 2 spaces indentation for if block contents.
+
+          if (t.separated                   &&
+              t.type != token_type::newline &&
+              &rt != &l.tokens[0])             // Not first in the line.
+            os << ' ';
+
+          if (lq) os << lq;
+          t.printer (os, t, print_mode::raw);
+          if (rq) os << rq;
+
+//          prev_qcomp = t.qcomp;
+//          prev_qtype = t.qtype;
+        }
+      }
+    }
+
     // Quote if empty or contains spaces or any of the special characters.
     // Note that we use single quotes since double quotes still allow
     // expansion.
diff --git a/libbuild2/script/script.hxx b/libbuild2/script/script.hxx
index 96c1343..f02583c 100644
--- a/libbuild2/script/script.hxx
+++ b/libbuild2/script/script.hxx
@@ -48,6 +48,9 @@ namespace build2
     //
     using lines = small_vector<line, 1>;
 
+    void
+    dump (ostream&, const string& ind, const lines&);
+
     // Parse object model.
     //
 
diff --git a/libbuild2/script/token.cxx b/libbuild2/script/token.cxx
index be0aa54..6c9de87 100644
--- a/libbuild2/script/token.cxx
+++ b/libbuild2/script/token.cxx
@@ -10,13 +10,13 @@ namespace build2
   namespace script
   {
     void
-    token_printer (ostream& os, const token& t, bool d)
+    token_printer (ostream& os, const token& t, print_mode m)
     {
       const string& v (t.value);
 
       // Only quote non-name tokens for diagnostics.
       //
-      const char* q (d ? "'" : "");
+      const char* q (m == print_mode::diagnostics ? "'" : "");
 
       switch (t.type)
       {
@@ -39,7 +39,7 @@ namespace build2
       case token_type::out_file_ovr: os << q << ">="  << v << q; break;
       case token_type::out_file_app: os << q << ">+"  << v << q; break;
 
-      default: build2::token_printer (os, t, d);
+      default: build2::token_printer (os, t, m);
       }
     }
   }
diff --git a/libbuild2/script/token.hxx b/libbuild2/script/token.hxx
index 0630e46..a2ccaee 100644
--- a/libbuild2/script/token.hxx
+++ b/libbuild2/script/token.hxx
@@ -49,7 +49,7 @@ namespace build2
     };
 
     void
-    token_printer (ostream&, const token&, bool);
+    token_printer (ostream&, const token&, print_mode);
   }
 }
 
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