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-rw-r--r--libbuild2/token.cxx60
1 files changed, 60 insertions, 0 deletions
diff --git a/libbuild2/token.cxx b/libbuild2/token.cxx
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--- /dev/null
+++ b/libbuild2/token.cxx
@@ -0,0 +1,60 @@
+// file : libbuild2/token.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <libbuild2/token.hxx>
+
+using namespace std;
+
+namespace build2
+{
+ void
+ token_printer (ostream& os, const token& t, bool d)
+ {
+ // Only quote non-name tokens for diagnostics.
+ //
+ const char* q (d ? "'" : "");
+
+ switch (t.type)
+ {
+ case token_type::eos: os << "<end of file>"; break;
+ case token_type::newline: os << "<newline>"; break;
+ case token_type::pair_separator: os << "<pair separator " << t.value[0] << ">"; break;
+ case token_type::word: os << '\'' << t.value << '\''; break;
+
+ case token_type::colon: os << q << ':' << q; break;
+ case token_type::dollar: os << q << '$' << q; break;
+ case token_type::question: os << q << '?' << q; break;
+ case token_type::comma: os << q << ',' << q; break;
+
+ case token_type::lparen: os << q << '(' << q; break;
+ case token_type::rparen: os << q << ')' << q; break;
+
+ case token_type::lcbrace: os << q << '{' << q; break;
+ case token_type::rcbrace: os << q << '}' << q; break;
+
+ case token_type::lsbrace: os << q << '[' << q; break;
+ case token_type::rsbrace: os << q << ']' << q; break;
+
+ case token_type::labrace: os << q << '<' << q; break;
+ case token_type::rabrace: os << q << '>' << q; break;
+
+ case token_type::assign: os << q << '=' << q; break;
+ case token_type::prepend: os << q << "=+" << q; break;
+ case token_type::append: os << q << "+=" << q; break;
+
+ case token_type::equal: os << q << "==" << q; break;
+ case token_type::not_equal: os << q << "!=" << q; break;
+ case token_type::less: os << q << '<' << q; break;
+ case token_type::greater: os << q << '>' << q; break;
+ case token_type::less_equal: os << q << "<=" << q; break;
+ case token_type::greater_equal: os << q << ">=" << q; break;
+
+ case token_type::log_or: os << q << "||" << q; break;
+ case token_type::log_and: os << q << "&&" << q; break;
+ case token_type::log_not: os << q << '!' << q; break;
+
+ default: assert (false); // Unhandled extended token.
+ }
+ }
+}