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1) Run runastyle; 

2) Clarify some comments in 'Tokenizer::simplifyFlowControl' and in 'Tokenizer::eraseDeadCode';
3) Add some 'const' variables inside 'Tokenizer::eraseDeadCode'.
This commit is contained in:
Edoardo Prezioso 2011-11-20 19:01:31 +01:00
parent d0d5a2fcd8
commit 6889a28d31
3 changed files with 27 additions and 25 deletions
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18
lib/tokenize.cpp
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@ -8259,7 +8259,7 @@ void Tokenizer::eraseDeadCode(Token *begin, const Token *end)
if (!checklabel) {
if (!indentlabel) {
//remove 'switch ( ... )'
Token *endround = tok->linkAt(2);
const Token *endround = tok->linkAt(2);
Token::eraseTokens(tok, endround->next());
} else {
tok = tok->linkAt(2);
@ -8297,7 +8297,7 @@ void Tokenizer::eraseDeadCode(Token *begin, const Token *end)
if (indentswitch && indentlevel == indentcase)
--indentlevel;
if (indentlevel < indentcheck) {
Token *end2 = tok->next();
const Token *end2 = tok->next();
tok = tok->next()->link()->previous(); //return to initial '{'
if (indentswitch && Token::simpleMatch(tok, ") {") && Token::Match(tok->link()->tokAt(-2), "[{};] switch ("))
tok = tok->link()->tokAt(-2); //remove also 'switch ( ... )'
@ -8339,8 +8339,9 @@ void Tokenizer::eraseDeadCode(Token *begin, const Token *end)
indentlevel = indentcheck;
} else {
if (indentswitch) {
//since the switch() instruction is removed, there's no sense to keep
//the case instructions. Remove them and leave out, if there are any.
//Before stopping the function, since the 'switch()'
//instruction is removed, there's no sense to keep the
//case instructions. Remove them, if there are any.
Token *tok2 = tok->tokAt(3);
const Token *end2 = tokcheck->next()->link();
unsigned int indentlevel2 = indentlevel;
@ -8348,12 +8349,11 @@ void Tokenizer::eraseDeadCode(Token *begin, const Token *end)
if (Token::Match(tok2->next(), "{|[|(")) {
tok2 = tok2->next()->link();
} else if (Token::Match(tok2, "[{};] case %any% : ;") || Token::Match(tok2, "[{};] default : ;")) {
Token::eraseTokens(tok2, tok2->tokAt(4 + (tok2->next()->str() == "case")));
const Token *end3 = tok2->tokAt(4 + (tok2->next()->str() == "case"));
Token::eraseTokens(tok2, end3);
if (Token::simpleMatch(tok2->previous(), "break ; break ;")) {
tok2 = tok2->tokAt(-2);
tok2->deleteNext();
tok2->deleteNext();
tok2 = tok2->tokAt(2);
}
} else if (tok2->next()->str() == "}") {
--indentlevel2;
@ -8365,9 +8365,9 @@ void Tokenizer::eraseDeadCode(Token *begin, const Token *end)
}
}
}
break; //stop removing tokens, we arrived to the label
break; //stop removing tokens, we arrived to the label.
}
} else { //I don't need to keep anything different from '{|}|switch|case|default'
} else { //no need to keep the other strings, remove them.
tok->deleteNext();
}
}

6
lib/tokenize.h
View File

@ -135,8 +135,10 @@ public:
* - code outside the scope where the function is called;
* - code after a change of scope caused by 'switch(...);'
* instructions, like 'case %any%;' or 'default;'
* Also, it preserves the 'switch' command if in a scope
* created by a 'case|default' instruction there is a label.
* Also, if the dead code contains a 'switch' block
* and inside it there's a label, the function removes all
* the 'switch(..)' tokens and every occurrence of 'case %any%; | default;'
* expression, such as the 'switch' block is reduced to a simple block.
*
* @param begin Tokens after this have a possibility to be erased.
* @param end Tokens before this have a possibility to be erased.