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| #include "../native.h" |
| #include "../object.h" |
| #include "../lists.h" |
| #include "../compile.h" |
|
|
| #include <stdlib.h> |
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|
|
| #ifndef max |
| # define max(a,b) ((a)>(b)?(a):(b)) |
| #endif |
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| LIST * sequence_select_highest_ranked( FRAME * frame, int flags ) |
| { |
| |
| |
|
|
| LIST * const elements = lol_get( frame->args, 0 ); |
| LIST * const rank = lol_get( frame->args, 1 ); |
|
|
| LIST * result = L0; |
| int highest_rank = -1; |
|
|
| { |
| LISTITER iter = list_begin( rank ); |
| LISTITER const end = list_end( rank ); |
| for ( ; iter != end; iter = list_next( iter ) ) |
| { |
| int const current = atoi( object_str( list_item( iter ) ) ); |
| highest_rank = max( highest_rank, current ); |
| } |
| } |
|
|
| { |
| LISTITER iter = list_begin( rank ); |
| LISTITER const end = list_end( rank ); |
| LISTITER elements_iter = list_begin( elements ); |
| LISTITER const elements_end = list_end( elements ); |
| for ( ; iter != end; iter = list_next( iter ), elements_iter = |
| list_next( elements_iter ) ) |
| if ( atoi( object_str( list_item( iter ) ) ) == highest_rank ) |
| result = list_push_back( result, object_copy( list_item( |
| elements_iter ) ) ); |
| } |
|
|
| return result; |
| } |
|
|
| LIST * sequence_transform( FRAME * frame, int flags ) |
| { |
| LIST * function = lol_get( frame->args, 0 ); |
| LIST * sequence = lol_get( frame->args, 1 ); |
| LIST * result = L0; |
| OBJECT * function_name = list_front( function ); |
| LISTITER args_begin = list_next( list_begin( function ) ), args_end = list_end( function ); |
| LISTITER iter = list_begin( sequence ), end = list_end( sequence ); |
| RULE * rule = bindrule( function_name, frame->prev->module ); |
|
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| for ( ; iter != end; iter = list_next( iter ) ) |
| { |
| FRAME inner[ 1 ]; |
|
|
| frame_init( inner ); |
| inner->prev = frame; |
| inner->prev_user = frame->prev_user; |
| inner->module = frame->prev->module; |
|
|
| lol_add( inner->args, list_push_back( list_copy_range( function, args_begin, args_end ), object_copy( list_item( iter ) ) ) ); |
| result = list_append( result, evaluate_rule( rule, function_name, inner ) ); |
|
|
| frame_free( inner ); |
| } |
|
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| return result; |
| } |
|
|
| void init_sequence() |
| { |
| { |
| char const * args[] = { "elements", "*", ":", "rank", "*", 0 }; |
| declare_native_rule( "sequence", "select-highest-ranked", args, |
| sequence_select_highest_ranked, 1 ); |
| } |
| { |
| char const * args[] = { "function", "+", ":", "sequence", "*", 0 }; |
| declare_native_rule( "sequence", "transform", args, |
| sequence_transform, 1 ); |
| } |
| } |
|
|
