diff options
| author | Boris Kolpackov <boris@codesynthesis.com> | 2022-12-15 11:24:18 +0200 |
|---|---|---|
| committer | Boris Kolpackov <boris@codesynthesis.com> | 2022-12-15 11:24:18 +0200 |
| commit | 3ca670b7b7c71ca67d70cac9dffb2ba6120b2e36 (patch) | |
| tree | 1424ac78fe10f697c8a0b63d91bb49889e8cdc85 /libbuild2/test/script/lexer.cxx | |
| parent | 0aa7a94e1032a96a2a72cb6a82824f9fe970d412 (diff) | |
Improve escape sequence support
Specifically:
1. In the double-quoted strings we now only do effective escaping of the
special `$("\` characters plus `)` for symmetry.
2. There is now support for "escape sequence expansion" in the form $\X where
\X can be any of the C/C++ simple escape sequences (\n, \t, etc) plus \0
(which in C/C++ is an octal escape sequence). For example:
info "foo$\n$\tbar$\n$\tbaz"
Will print:
buildfile:1:1: info: foo
bar
baz
Diffstat (limited to 'libbuild2/test/script/lexer.cxx')
| -rw-r--r-- | libbuild2/test/script/lexer.cxx | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libbuild2/test/script/lexer.cxx b/libbuild2/test/script/lexer.cxx index b470d25..aec91fc 100644 --- a/libbuild2/test/script/lexer.cxx +++ b/libbuild2/test/script/lexer.cxx @@ -339,15 +339,17 @@ namespace build2 } token lexer:: - word (state st, bool sep) + word (const state& st, bool sep) { - lexer_mode m (st.mode); + lexer_mode m (st.mode); // Save. token r (base_lexer::word (st, sep)); if (m == lexer_mode::variable) { - if (r.value.size () == 1 && digit (r.value[0])) // $N + if (r.type == type::word && + r.value.size () == 1 && + digit (r.value[0])) // $N { xchar c (peek ()); |