diff options
Diffstat (limited to 'libsolidity/interface/CompilerStack.cpp')
| -rw-r--r-- | libsolidity/interface/CompilerStack.cpp | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/libsolidity/interface/CompilerStack.cpp b/libsolidity/interface/CompilerStack.cpp index ee55f41a..a097e4c8 100644 --- a/libsolidity/interface/CompilerStack.cpp +++ b/libsolidity/interface/CompilerStack.cpp @@ -507,21 +507,44 @@ string CompilerStack::applyRemapping(string const& _path, string const& _context return false; return std::equal(_a.begin(), _a.end(), _b.begin()); }; + // Try to find whether _a is a closer match for context _reference than _b + // Defaults to longest prefix in case of a tie. + auto isClosestContext = [](string const& _a, string const& _b, string const& _reference) + { + int a = _reference.compare(_a); + int b = _reference.compare(_b); + if (a == 0) + return true; + else if (b == 0) + return false; + else if (abs(a) == abs(b)) { + return a > 0; + } + return abs(a) < abs(b); + }; + using filepath = boost::filesystem::path; + filepath context(_context); size_t longestPrefix = 0; string longestPrefixTarget; + string currentClosestContext; + string referenceContext = context.parent_path().generic_string(); for (auto const& redir: m_remappings) { + filepath redirContext(redir.context); // Skip if we already have a closer match. - if (longestPrefix > 0 && redir.prefix.length() <= longestPrefix) + if (longestPrefix > 0 && redir.prefix.length() < longestPrefix) continue; // Skip if redir.context is not a prefix of _context - if (!isPrefixOf(redir.context, _context)) + if (!isPrefixOf(redirContext.generic_string(), _context)) continue; // Skip if the prefix does not match. if (!isPrefixOf(redir.prefix, _path)) continue; - + // Skip if there is a prefix collision and the current context is closer + if (redir.prefix.length() == longestPrefix && !isClosestContext(redirContext.generic_string(), currentClosestContext, referenceContext)) + continue; + currentClosestContext = redir.context; longestPrefix = redir.prefix.length(); longestPrefixTarget = redir.target; } |