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--check-headers=no: remove types in headers that are not used in the source file

This commit is contained in:
Daniel Marjamäki 2019-03-03 12:36:33 +01:00
parent 411a3f09f7
commit 59ec5f961f
1 changed files with 27 additions and 5 deletions
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32
lib/tokenize.cpp
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@ -4266,10 +4266,20 @@ void Tokenizer::simplifyHeaders()
// TODO: Remove unused types/variables/etc in headers..
std::set<std::string> functions;
// functions and types to keep
std::set<std::string> keep;
for (const Token *tok = list.front(); tok; tok = tok->next()) {
if (tok->fileIndex() == 0 && Token::Match(tok, "%name% (") && !Token::simpleMatch(tok->linkAt(1), ") {"))
functions.insert(tok->str());
if (tok->fileIndex() != 0 || !tok->isName())
continue;
if (Token::Match(tok, "%name% (") && !Token::simpleMatch(tok->linkAt(1), ") {")) {
keep.insert(tok->str());
continue;
}
if (Token::Match(tok, "%name% %name%|::|*|&|<")) {
keep.insert(tok->str());
}
}
const std::set<std::string> functionStart{"static", "const", "unsigned", "signed", "void", "bool", "char", "short", "int", "long", "float", "*"};
@ -4293,17 +4303,29 @@ void Tokenizer::simplifyHeaders()
}
}
// Remove unused function declarations
if (Token::Match(tok, "[;{}]")) {
// Remove unused function declarations
while (1) {
Token *start = tok->next();
while (start && functionStart.find(start->str()) != functionStart.end())
start = start->next();
if (Token::Match(start, "%name% (") && Token::simpleMatch(start->linkAt(1), ") const| ;") && functions.find(start->str()) == functions.end())
if (Token::Match(start, "%name% (") && Token::simpleMatch(start->linkAt(1), ") const| ;") && keep.find(start->str()) == keep.end())
Token::eraseTokens(tok, start->linkAt(1)->tokAt(2));
else
break;
}
if (Token::Match(tok, "[;{}] class|struct %name% [:{]") && keep.find(tok->strAt(2)) == keep.end()) {
// Remove this class/struct
const Token *endToken = tok->tokAt(3);
if (endToken->str() == ":") {
endToken = endToken->next();
while (Token::Match(endToken, "%name%|,"))
endToken = endToken->next();
}
if (endToken && endToken->str() == "{" && Token::simpleMatch(endToken->link(), "} ;"))
Token::eraseTokens(tok, endToken->link()->next());
}
}
}
}