| Issue |
54734
|
| Summary |
cindex.py TranslationUnit skips std::string::operator+=
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
MartinsSmirnovs
|
I try to find all occurrences of `std::string::operator+=` in my C++ source files using clang's Python cindex. Here is my sample code:
```
#include <iostream>
class A {
public:
A &operator+=(const int &arg) {
number += arg;
return *this;
}
private:
int number = 0;
};
int main() {
std::string str = "test";
str += "a";
A obj;
obj += 3;
}
```
In this example I would like cindex to find `str += "a"` and point to it using it's `Cursor` object. However, it gets skipped. Here is Python code I used:
```
from clang.cindex import Cursor, TranslationUnit
translationUnit: TranslationUnit = TranslationUnit.from_source( "main.cpp" )
cursor: Cursor
for cursor in translationUnit.cursor.walk_preorder():
for token in cursor.get_tokens():
print( token.spelling, end=" " )
print()
```
Interestingly, occurrence of `A::operator+=` as ` obj += 3;` was found and printed. Here is output of the script (ignoring `iostream` include that was printed too):
```
class A { public : A & operator += ( const int & arg ) { number += arg ; return * this ; } private : int number = 0 ; }
public :
A & operator += ( const int & arg ) { number += arg ; return * this ; }
A
const int & arg
{ number += arg ; return * this ; }
number += arg
number
arg
arg
return * this
* this
this
private :
int number = 0
0
int main ( ) { std :: string str = "test" ; str += "a" ; A obj ; obj += 3 ; }
{ std :: string str = "test" ; str += "a" ; A obj ; obj += 3 ; }
std :: string str = "test" ;
std :: string str
std
string
A obj ;
A obj
A
obj
obj += 3
obj += 3
obj
+=
+=
3
3
```
As can be seen, only declaration of `std::string str` gets printed, but addition of character "t" on next line gets skipped.
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