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optimized `Library::detectContainerInternal()` a bit (#5333) 

Scanning `cli/filelister.cpp` with `DISABLE_VALUEFLOW=1` and
`--enable=all -Ilib -D__GNUC__`

Clang 15 `111,300,996` -> `106,883,955`
GCC 13 `110,555,879` -> `105,983,608`
This commit is contained in:
Oliver Stöneberg 2023-08-16 11:10:38 +02:00 committed by GitHub
parent 8b309a8829
commit 6a263ba026
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 26 additions and 18 deletions
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42
lib/library.cpp
View File

@ -419,7 +419,7 @@ Library::Error Library::load(const tinyxml2::XMLDocument &doc)
const char* const inherits = node->Attribute("inherits");
if (inherits) {
const std::map<std::string, Container>::const_iterator i = containers.find(inherits);
const std::unordered_map<std::string, Container>::const_iterator i = containers.find(inherits);
if (i != containers.end())
container = i->second; // Take values from parent and overwrite them if necessary
else
@ -1158,8 +1158,17 @@ bool Library::isScopeNoReturn(const Token *end, std::string *unknownFunc) const
return false;
}
const Library::Container* Library::detectContainerInternal(const Token* typeStart, DetectContainer detect, bool* isIterator, bool withoutStd) const
const Library::Container* Library::detectContainerInternal(const Token* const typeStart, DetectContainer detect, bool* isIterator, bool withoutStd) const
{
const Token* firstLinkedTok = nullptr;
for (const Token* tok = typeStart; tok && !tok->varId(); tok = tok->next()) {
if (!tok->link())
continue;
firstLinkedTok = tok;
break;
}
for (const std::pair<const std::string, Library::Container> & c : containers) {
const Container& container = c.second;
if (container.startPattern.empty())
@ -1177,23 +1186,22 @@ const Library::Container* Library::detectContainerInternal(const Token* typeStar
return &container;
}
for (const Token* tok = typeStart; tok && !tok->varId(); tok = tok->next()) {
if (!tok->link())
continue;
if (!firstLinkedTok)
continue;
const bool matchedStartPattern = Token::Match(typeStart, container.startPattern2.c_str() + offset);
const bool matchedStartPattern = Token::Match(typeStart, container.startPattern2.c_str() + offset);
if (!matchedStartPattern)
continue;
if (detect != ContainerOnly && matchedStartPattern && Token::Match(tok->link(), container.itEndPattern.c_str())) {
if (isIterator)
*isIterator = true;
return &container;
}
if (detect != IteratorOnly && matchedStartPattern && Token::Match(tok->link(), container.endPattern.c_str())) {
if (isIterator)
*isIterator = false;
return &container;
}
break;
if (detect != ContainerOnly && Token::Match(firstLinkedTok->link(), container.itEndPattern.c_str())) {
if (isIterator)
*isIterator = true;
return &container;
}
if (detect != IteratorOnly && Token::Match(firstLinkedTok->link(), container.endPattern.c_str())) {
if (isIterator)
*isIterator = false;
return &container;
}
}
return nullptr;

2
lib/library.h
View File

@ -282,7 +282,7 @@ public:
static Yield yieldFrom(const std::string& yieldName);
static Action actionFrom(const std::string& actionName);
};
std::map<std::string, Container> containers;
std::unordered_map<std::string, Container> containers;
const Container* detectContainer(const Token* typeStart) const;
const Container* detectIterator(const Token* typeStart) const;
const Container* detectContainerOrIterator(const Token* typeStart, bool* isIterator = nullptr, bool withoutStd = false) const;