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Simplify script lexer.

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Differential Revision: https://reviews.llvm.org/D41577

llvm-svn: 321453
This commit is contained in:
Rui Ueyama
2017-12-26 10:13:10 +00:00
parent 162439dcdf
commit c67d6b2da0
2 changed files with 9 additions and 3 deletions
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10
lld/ELF/ScriptLexer.cpp
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@@ -115,11 +115,19 @@ void ScriptLexer::tokenize(MemoryBufferRef MB) {
continue;
}
// ">foo" is parsed to ">" and "foo", but ">>" is parsed to ">>".
if (S.startswith("<<") || S.startswith("<=") || S.startswith(">>") ||
S.startswith(">=")) {
Vec.push_back(S.substr(0, 2));
S = S.substr(2);
continue;
}
// Unquoted token. This is more relaxed than tokens in C-like language,
// so that you can write "file-name.cpp" as one bare token, for example.
size_t Pos = S.find_first_not_of(
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
"0123456789_.$/\\~=+[]*?-!<>^:");
"0123456789_.$/\\~=+[]*?-!^:");
// A character that cannot start a word (which is usually a
// punctuation) forms a single character token.