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Diffstat (limited to 'libbuild2/test/script/lexer.test.cxx')
-rw-r--r-- | libbuild2/test/script/lexer.test.cxx | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/libbuild2/test/script/lexer.test.cxx b/libbuild2/test/script/lexer.test.cxx new file mode 100644 index 0000000..5a421b8 --- /dev/null +++ b/libbuild2/test/script/lexer.test.cxx @@ -0,0 +1,85 @@ +// file : libbuild2/test/script/lexer.test.cxx -*- C++ -*- +// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd +// license : MIT; see accompanying LICENSE file + +#include <cassert> +#include <iostream> + +#include <libbuild2/types.hxx> +#include <libbuild2/utility.hxx> + +#include <libbuild2/test/script/token.hxx> +#include <libbuild2/test/script/lexer.hxx> + +using namespace std; + +namespace build2 +{ + namespace test + { + namespace script + { + // Usage: argv[0] <lexer-mode> + // + int + main (int argc, char* argv[]) + { + lexer_mode m; + { + assert (argc == 2); + string s (argv[1]); + + if (s == "command-line") m = lexer_mode::command_line; + else if (s == "first-token") m = lexer_mode::first_token; + else if (s == "second-token") m = lexer_mode::second_token; + else if (s == "variable-line") m = lexer_mode::variable_line; + else if (s == "command-expansion") m = lexer_mode::command_expansion; + else if (s == "here-line-single") m = lexer_mode::here_line_single; + else if (s == "here-line-double") m = lexer_mode::here_line_double; + else if (s == "description-line") m = lexer_mode::description_line; + else if (s == "variable") m = lexer_mode::variable; + else assert (false); + } + + try + { + cin.exceptions (istream::failbit | istream::badbit); + + // Some modes auto-expire so we need something underneath. + // + bool u (m == lexer_mode::first_token || + m == lexer_mode::second_token || + m == lexer_mode::variable_line || + m == lexer_mode::description_line || + m == lexer_mode::variable); + + lexer l (cin, path ("stdin"), u ? lexer_mode::command_line : m); + if (u) + l.mode (m); + + // No use printing eos since we will either get it or loop forever. + // + for (token t (l.next ()); t.type != token_type::eos; t = l.next ()) + { + // Print each token on a separate line without quoting operators. + // + t.printer (cout, t, false); + cout << endl; + } + } + catch (const failed&) + { + return 1; + } + + return 0; + } + } + } +} + +int +main (int argc, char* argv[]) +{ + return build2::test::script::main (argc, argv); +} |