jyapayne/swig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Support foo.bar in constant expressions

Browse source
This commit is contained in:
Olly Betts 2022-01-26 12:43:45 +13:00
commit e03ef3ecb6
3 changed files with 11 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
CHANGES.current
View file

@ -7,6 +7,10 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
Version 4.1.0 (in progress) Version 4.1.0 (in progress)
=========================== ===========================
2022-01-25: olly
Constant expressions now support member access with `.` such as
`foo.bar`. Previous this only worked in a case like `x->foo.bar`.
2022-01-25: olly 2022-01-25: olly
#2091 Support most cases of `sizeof` applied to an expression #2091 Support most cases of `sizeof` applied to an expression
in constant expressions. Previously there was only support for in constant expressions. Previously there was only support for

7
Examples/test-suite/constant_expr.i
View file

@ -14,4 +14,11 @@ isPointer = false
}; };
}; };
// Test handling of ID PERIOD ID in constant expressions (supported since 4.1.0).
struct A {
int i;
};
constexpr A a{42};
const int N = a.i;
%} %}

2
Source/CParse/parser.y
View file

@ -6521,12 +6521,10 @@ exprmem : ID ARROW ID {
$$ = $1; $$ = $1;
Printf($$.val, "->%s", $3); Printf($$.val, "->%s", $3);
} }
/* This generates a shift-reduce
| ID PERIOD ID { | ID PERIOD ID {
$$.val = NewStringf("%s.%s", $1, $3); $$.val = NewStringf("%s.%s", $1, $3);
$$.type = 0; $$.type = 0;
} }
*/
| exprmem PERIOD ID { | exprmem PERIOD ID {
$$ = $1; $$ = $1;
Printf($$.val, ".%s", $3); Printf($$.val, ".%s", $3);