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reject attempts to use ()'s in patterns, these are reserved for filecheck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82780 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -45,6 +45,9 @@ NoCanonicalizeWhiteSpace("strict-whitespace",
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//===----------------------------------------------------------------------===//
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class Pattern {
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SourceMgr *SM;
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SMLoc PatternLoc;
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/// FixedStr - If non-empty, this pattern is a fixed string match with the
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/// specified fixed string.
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StringRef FixedStr;
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@ -67,6 +70,9 @@ private:
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};
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bool Pattern::ParsePattern(StringRef PatternStr, SourceMgr &SM) {
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this->SM = &SM;
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PatternLoc = SMLoc::getFromPointer(PatternStr.data());
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// Ignore trailing whitespace.
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while (!PatternStr.empty() &&
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(PatternStr.back() == ' ' || PatternStr.back() == '\t'))
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@ -74,9 +80,8 @@ bool Pattern::ParsePattern(StringRef PatternStr, SourceMgr &SM) {
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// Check that there is something on the line.
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if (PatternStr.empty()) {
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SM.PrintMessage(SMLoc::getFromPointer(PatternStr.data()),
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"found empty check string with prefix '"+CheckPrefix+":'",
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"error");
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SM.PrintMessage(PatternLoc, "found empty check string with prefix '" +
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CheckPrefix+":'", "error");
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return true;
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}
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@ -170,6 +175,13 @@ size_t Pattern::Match(StringRef Buffer, size_t &MatchLen) const {
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assert(!MatchInfo.empty() && "Didn't get any match");
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StringRef FullMatch = MatchInfo[0];
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if (MatchInfo.size() != 1) {
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SM->PrintMessage(PatternLoc, "regex cannot use grouping parens", "error");
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exit(1);
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}
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MatchLen = FullMatch.size();
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return FullMatch.data()-Buffer.data();
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}
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