1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
#include "builtins/builtins.h"
#include "precedence.h"
#include "helpers.h"
using namespace empathy;
using namespace empathy::ir;
using namespace empathy::parse;
namespace empathy::builtins
{
void SetupCommaOp( Env& e )
{
RegisterLeftAssInfixOp( e, ","_sid, precedence::CommaOp,
[]( auto&& parser, auto&& lhs, auto&& rhs ) -> optional< Value >
{
if( IsOpenTuple( lhs ) )
return AppendToTuple( lhs, rhs );
return AppendToTuple( AppendToTuple( EmptyTuple(), lhs ), rhs );
} );
}
}
|
>
|
>
>
|
|
|
|
|
>
>
>
>
>
>
|
>
>
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
#include "builtins/builtins.h"
#include "precedence.h"
#include "helpers.h"
using namespace empathy;
using namespace empathy::ir;
using namespace empathy::parse;
namespace empathy::builtins
{
void SetupCommaOp( Env& e )
{
BuildParseRule( e, ","_sid,
LeftAssInfixOp( "operator_comma"_sid, precedence::CommaOp,
// Overload: any tuple, anything
ForTypes< CustomPattern< Value, TuplePattern >, Value >(
[]( auto&& lhs, auto&& rhs ) -> optional< Value >
{
if( IsOpenTuple( lhs ) )
return AppendToTuple( lhs, rhs );
return AppendToTuple( AppendToTuple( EmptyTuple(), lhs ), rhs );
} ),
// Overload: anything, anything
ForType< Value >(
[]( auto&& lhs, auto&& rhs ) -> optional< Value >
{
return AppendToTuple( AppendToTuple( EmptyTuple(), lhs ), rhs );
} )
)
);
}
}
|