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Refactorization: Improved performance of Tokenizer::isFunctionParameterPassedByValue() 

- Skip it for C code
- Improved performance by around 80% on C++ code (3,5% of entire runtime)
This commit is contained in:
PKEuS 2015-12-03 14:44:59 +01:00
parent 70767a30c4
commit 46d6623182
2 changed files with 8 additions and 8 deletions
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12
lib/tokenize.cpp
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@ -7974,13 +7974,16 @@ bool Tokenizer::IsScopeNoReturn(const Token *endScopeToken, bool *unknown) const
bool Tokenizer::isFunctionParameterPassedByValue(const Token *fpar) const
{
if (isC()) // C does not support references
return true;
// TODO: If symbol database is available, use it.
const Token *ftok;
// Look at function call, what parameter number is it?
unsigned int parentheses = 1;
unsigned int parameter = 1;
for (ftok = fpar; ftok; ftok = ftok->previous()) {
for (ftok = fpar->previous(); ftok; ftok = ftok->previous()) {
if (ftok->str() == "(") {
--parentheses;
if (parentheses == 0) {
@ -8003,13 +8006,10 @@ bool Tokenizer::isFunctionParameterPassedByValue(const Token *fpar) const
return true;
// Locate function declaration..
unsigned int indentlevel = 0;
for (const Token *tok = tokens(); tok; tok = tok->next()) {
if (tok->str() == "{")
++indentlevel;
else if (tok->str() == "}")
indentlevel = (indentlevel > 0) ? indentlevel - 1U : 0U;
else if (indentlevel == 0 && Token::Match(tok, "%type% (") && tok->str() == functionName) {
tok = tok->link();
else if (Token::Match(tok, "%type% (") && tok->str() == functionName) {
// Goto parameter
tok = tok->tokAt(2);
unsigned int par = 1;