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Fix parsing of default argument expressions containing ->.

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This commit is contained in:
William S Fulton 2018-01-05 07:58:25 +00:00
commit ef378407d0
3 changed files with 33 additions and 2 deletions
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4
CHANGES.current
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@ -7,6 +7,10 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
Version 4.0.0 (in progress)
===========================
2018-01-05: wsfulton
Fix default arguments using expressions containing -> syntax error. Problem reported on
swig-user mailing list.
2017-12-30: wsfulton
[Python] Replace pep8 with pycodestyle for checking the Python code style when
running Python tests.

1
Examples/test-suite/common.mk
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@ -164,6 +164,7 @@ CPP_TEST_CASES += \
cpp_typedef \
curiously_recurring_template_pattern \
default_args \
default_arg_expressions \
default_arg_values \
default_constructor \
defvalue_constructor \

30
Source/CParse/parser.y
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@ -1604,7 +1604,7 @@ static String *add_qualifier_to_declarator(SwigType *type, SwigType *qualifier)
%type <type> type rawtype type_right anon_bitfield_type decltype ;
%type <bases> base_list inherit raw_inherit;
%type <dtype> definetype def_args etype default_delete deleted_definition explicit_default;
%type <dtype> expr exprnum exprcompound valexpr;
%type <dtype> expr exprnum exprcompound valexpr exprmem;
%type <id> ename ;
%type <id> less_valparms_greater;
%type <str> type_qualifier;
@ -6266,7 +6266,33 @@ expr : valexpr { $$ = $1; }
}
;
valexpr : exprnum { $$ = $1; }
/* simple member access expressions */
exprmem : ID ARROW ID {
$$.val = NewStringf("%s->%s", $1, $3);
$$.type = 0;
}
| exprmem ARROW ID {
$$ = $1;
Printf($$.val, "->%s", $3);
}
/* This generates a shift-reduce
| ID PERIOD ID {
$$.val = NewStringf("%s.%s", $1, $3);
$$.type = 0;
}
*/
| exprmem PERIOD ID {
$$ = $1;
Printf($$.val, ".%s", $3);
}
;
valexpr : exprnum {
$$ = $1;
}
| exprmem {
$$ = $1;
}
| string {
$$.val = $1;
$$.type = T_STRING;