11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
14 using namespace clang::ast_matchers;
20 void LimitedRandomnessCheck::registerMatchers(MatchFinder *
Finder) {
21 Finder->addMatcher(callExpr(callee(functionDecl(namedDecl(hasName(
"::rand")),
22 parameterCountIs(0))))
23 .bind(
"randomGenerator"),
27 void LimitedRandomnessCheck::check(
const MatchFinder::MatchResult &Result) {
29 if (getLangOpts().CPlusPlus)
30 msg =
"; use C++11 random library instead";
32 const auto *MatchedDecl = Result.Nodes.getNodeAs<CallExpr>(
"randomGenerator");
33 diag(MatchedDecl->getLocStart(),
"rand() has limited randomness" + msg);
std::unique_ptr< ast_matchers::MatchFinder > Finder