-
Notifications
You must be signed in to change notification settings - Fork 1
/
__gmsl
969 lines (828 loc) · 44.9 KB
/
__gmsl
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
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
# ----------------------------------------------------------------------------
#
# GNU Make Standard Library (GMSL)
#
# A library of functions to be used with GNU Make's $(call) that
# provides functionality not available in standard GNU Make.
#
# Copyright (c) 2005-2022 John Graham-Cumming
#
# This file is part of GMSL
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# Neither the name of the John Graham-Cumming nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# ----------------------------------------------------------------------------
# This is the GNU Make Standard Library version number as a list with
# three items: major, minor, revision
gmsl_version := 1 2 0
__gmsl_name := GNU Make Standard Library
# Used to output warnings and error from the library, it's possible to
# disable any warnings or errors by overriding these definitions
# manually or by setting GMSL_NO_WARNINGS or GMSL_NO_ERRORS
ifdef GMSL_NO_WARNINGS
__gmsl_warning :=
else
__gmsl_warning = $(if $1,$(warning $(__gmsl_name): $1))
endif
ifdef GMSL_NO_ERRORS
__gmsl_error :=
else
__gmsl_error = $(if $1,$(error $(__gmsl_name): $1))
endif
# If GMSL_TRACE is enabled then calls to the library functions are
# traced to stdout using warning messages with their arguments
ifdef GMSL_TRACE
__gmsl_tr1 = $(warning $0('$1'))
__gmsl_tr2 = $(warning $0('$1','$2'))
__gmsl_tr3 = $(warning $0('$1','$2','$3'))
else
__gmsl_tr1 :=
__gmsl_tr2 :=
__gmsl_tr3 :=
endif
# See if spaces are valid in variable names (this was the case until
# GNU Make 3.82)
ifeq ($(MAKE_VERSION),3.82)
__gmsl_spaced_vars := $(false)
else
__gmsl_spaced_vars := $(true)
endif
# Figure out whether we have $(eval) or not (GNU Make 3.80 and above)
# if we do not then output a warning message, if we do then some
# functions will be enabled.
__gmsl_have_eval := $(false)
__gmsl_ignore := $(eval __gmsl_have_eval := $(true))
# If this is being run with Electric Cloud's emake then warn that
# their $(eval) support is incomplete in 1.x, 2.x, 3.x, 4.x and 5.0,
# 5.1, 5.2 and 5.3
ifdef ECLOUD_BUILD_ID
__gmsl_emake_major := $(word 1,$(subst ., ,$(EMAKE_VERSION)))
__gmsl_emake_minor := $(word 2,$(subst ., ,$(EMAKE_VERSION)))
ifneq ("$(findstring $(__gmsl_emake_major),1 2 3 4)$(findstring $(__gmsl_emake_major)$(__gmsl_emake_minor),50 51 52 53)","")
$(warning You are using a version of Electric Cloud's emake which has incomplete $$(eval) support)
__gmsl_have_eval := $(false)
endif
endif
# See if we have $(lastword) (GNU Make 3.81 and above)
__gmsl_have_lastword := $(lastword $(false) $(true))
# See if we have native or and and (GNU Make 3.81 and above)
__or_tt := /$(or $(true),$(true))/$(or $(true),$(false))/$(or $(false),$(true))/$(or $(false),$(false))/
__and_tt := /$(and $(true),$(true))/$(and $(true),$(false))/$(and $(false),$(true))/$(and $(false),$(false))/
__gmsl_have_or := $(if $(filter /T/T/T//,$(__or_tt)),$(true),$(false))
__gmsl_have_and := $(if $(filter /T////,$(__and_tt)),$(true),$(false))
ifneq ($(__gmsl_have_eval),$(true))
$(call __gmsl_warning,Your make version $(MAKE_VERSION) does not support $$$$(eval): some functions disabled)
endif
__gmsl_dollar := $$
__gmsl_hash := \#
# ----------------------------------------------------------------------------
# ----------------------------------------------------------------------------
# Function: gmsl_compatible
# Arguments: List containing the desired library version number (maj min rev)
# Returns: $(true) if this version of the library is compatible
# with the requested version number, otherwise $(false)
# ----------------------------------------------------------------------------
gmsl_compatible = $(strip \
$(if $(call gt,$(word 1,$1),$(word 1,$(gmsl_version))), \
$(false), \
$(if $(call lt,$(word 1,$1),$(word 1,$(gmsl_version))), \
$(true), \
$(if $(call gt,$(word 2,$1),$(word 2,$(gmsl_version))), \
$(false), \
$(if $(call lt,$(word 2,$1),$(word 2,$(gmsl_version))), \
$(true), \
$(call lte,$(word 3,$1),$(word 3,$(gmsl_version))))))))
# ###########################################################################
# LOGICAL OPERATORS
# ###########################################################################
# not is defined in gmsl
# ----------------------------------------------------------------------------
# Function: and
# Arguments: Two boolean values
# Returns: Returns $(true) if both of the booleans are true
# ----------------------------------------------------------------------------
ifneq ($(__gmsl_have_and),$(true))
and = $(__gmsl_tr2)$(if $1,$(if $2,$(true),$(false)),$(false))
endif
# ----------------------------------------------------------------------------
# Function: or
# Arguments: Two boolean values
# Returns: Returns $(true) if either of the booleans is true
# ----------------------------------------------------------------------------
ifneq ($(__gmsl_have_or),$(true))
or = $(__gmsl_tr2)$(if $1$2,$(true),$(false))
endif
# ----------------------------------------------------------------------------
# Function: xor
# Arguments: Two boolean values
# Returns: Returns $(true) if exactly one of the booleans is true
# ----------------------------------------------------------------------------
xor = $(__gmsl_tr2)$(if $1,$(if $2,$(false),$(true)),$(if $2,$(true),$(false)))
# ----------------------------------------------------------------------------
# Function: nand
# Arguments: Two boolean values
# Returns: Returns value of 'not and'
# ----------------------------------------------------------------------------
nand = $(__gmsl_tr2)$(if $1,$(if $2,$(false),$(true)),$(true))
# ----------------------------------------------------------------------------
# Function: nor
# Arguments: Two boolean values
# Returns: Returns value of 'not or'
# ----------------------------------------------------------------------------
nor = $(__gmsl_tr2)$(if $1$2,$(false),$(true))
# ----------------------------------------------------------------------------
# Function: xnor
# Arguments: Two boolean values
# Returns: Returns value of 'not xor'
# ----------------------------------------------------------------------------
xnor =$(__gmsl_tr2)$(if $1,$(if $2,$(true),$(false)),$(if $2,$(false),$(true)))
# ###########################################################################
# LIST MANIPULATION FUNCTIONS
# ###########################################################################
# ----------------------------------------------------------------------------
# Function: first (same as LISP's car, or head)
# Arguments: 1: A list
# Returns: Returns the first element of a list
# ----------------------------------------------------------------------------
first = $(__gmsl_tr1)$(firstword $1)
# ----------------------------------------------------------------------------
# Function: last
# Arguments: 1: A list
# Returns: Returns the last element of a list
# ----------------------------------------------------------------------------
ifeq ($(__gmsl_have_lastword),$(true))
last = $(__gmsl_tr1)$(lastword $1)
else
last = $(__gmsl_tr1)$(if $1,$(word $(words $1),$1))
endif
# ----------------------------------------------------------------------------
# Function: rest (same as LISP's cdr, or tail)
# Arguments: 1: A list
# Returns: Returns the list with the first element removed
# ----------------------------------------------------------------------------
rest = $(__gmsl_tr1)$(wordlist 2,$(words $1),$1)
# ----------------------------------------------------------------------------
# Function: chop
# Arguments: 1: A list
# Returns: Returns the list with the last element removed
# ----------------------------------------------------------------------------
chop = $(__gmsl_tr1)$(wordlist 2,$(words $1),x $1)
# ----------------------------------------------------------------------------
# Function: map
# Arguments: 1: Name of function to $(call) for each element of list
# 2: List to iterate over calling the function in 1
# Returns: The list after calling the function on each element
# ----------------------------------------------------------------------------
map = $(__gmsl_tr2)$(strip $(foreach a,$2,$(call $1,$a)))
# ----------------------------------------------------------------------------
# Function: pairmap
# Arguments: 1: Name of function to $(call) for each pair of elements
# 2: List to iterate over calling the function in 1
# 3: Second list to iterate over calling the function in 1
# Returns: The list after calling the function on each pair of elements
# ----------------------------------------------------------------------------
pairmap = $(strip $(__gmsl_tr3)\
$(if $2$3,$(call $1,$(call first,$2),$(call first,$3)) \
$(call pairmap,$1,$(call rest,$2),$(call rest,$3))))
# ----------------------------------------------------------------------------
# Function: leq
# Arguments: 1: A list to compare against...
# 2: ...this list
# Returns: Returns $(true) if the two lists are identical
# ----------------------------------------------------------------------------
leq = $(__gmsl_tr2)$(strip $(if $(call seq,$(words $1),$(words $2)), \
$(call __gmsl_list_equal,$1,$2),$(false)))
__gmsl_list_equal = $(if $(strip $1), \
$(if $(call seq,$(call first,$1),$(call first,$2)), \
$(call __gmsl_list_equal, \
$(call rest,$1), \
$(call rest,$2)), \
$(false)), \
$(true))
# ----------------------------------------------------------------------------
# Function: lne
# Arguments: 1: A list to compare against...
# 2: ...this list
# Returns: Returns $(true) if the two lists are different
# ----------------------------------------------------------------------------
lne = $(__gmsl_tr2)$(call not,$(call leq,$1,$2))
# ----------------------------------------------------------------------------
# Function: reverse
# Arguments: 1: A list to reverse
# Returns: The list with its elements in reverse order
# ----------------------------------------------------------------------------
reverse =$(__gmsl_tr1)$(strip $(if $1,$(call reverse,$(call rest,$1)) \
$(call first,$1)))
# ----------------------------------------------------------------------------
# Function: uniq
# Arguments: 1: A list from which to remove repeated elements
# Returns: The list with duplicate elements removed without reordering
# ----------------------------------------------------------------------------
uniq = $(strip $(__gmsl_tr1) $(if $1,$(firstword $1) \
$(call uniq,$(filter-out $(firstword $1),$1))))
# ----------------------------------------------------------------------------
# Function: length
# Arguments: 1: A list
# Returns: The number of elements in the list
# ----------------------------------------------------------------------------
length = $(__gmsl_tr1)$(words $1)
# ###########################################################################
# STRING MANIPULATION FUNCTIONS
# ###########################################################################
# Helper function that translates any GNU Make 'true' value (i.e. a
# non-empty string) to our $(true)
__gmsl_make_bool = $(if $(strip $1),$(true),$(false))
# ----------------------------------------------------------------------------
# Function: seq
# Arguments: 1: A string to compare against...
# 2: ...this string
# Returns: Returns $(true) if the two strings are identical
# ----------------------------------------------------------------------------
seq = $(__gmsl_tr2)$(if $(subst x$1,,x$2)$(subst x$2,,x$1),$(false),$(true))
# ----------------------------------------------------------------------------
# Function: sne
# Arguments: 1: A string to compare against...
# 2: ...this string
# Returns: Returns $(true) if the two strings are not the same
# ----------------------------------------------------------------------------
sne = $(__gmsl_tr2)$(call not,$(call seq,$1,$2))
# ----------------------------------------------------------------------------
# Function: split
# Arguments: 1: The character to split on
# 2: A string to split
# Returns: Splits a string into a list separated by spaces at the split
# character in the first argument
# ----------------------------------------------------------------------------
split = $(__gmsl_tr2)$(strip $(subst $1, ,$2))
# ----------------------------------------------------------------------------
# Function: merge
# Arguments: 1: The character to put between fields
# 2: A list to merge into a string
# Returns: Merges a list into a single string, list elements are separated
# by the character in the first argument
# ----------------------------------------------------------------------------
merge = $(__gmsl_tr2)$(strip $(if $2, \
$(if $(call seq,1,$(words $2)), \
$2,$(call first,$2)$1$(call merge,$1,$(call rest,$2)))))
ifdef __gmsl_have_eval
# ----------------------------------------------------------------------------
# Function: tr
# Arguments: 1: The list of characters to translate from
# 2: The list of characters to translate to
# 3: The text to translate
# Returns: Returns the text after translating characters
# ----------------------------------------------------------------------------
tr = $(strip $(__gmsl_tr3)$(call assert_no_dollar,$0,$1$2$3) \
$(eval __gmsl_t := $3) \
$(foreach c, \
$(join $(addsuffix :,$1),$2), \
$(eval __gmsl_t := \
$(subst $(word 1,$(subst :, ,$c)),$(word 2,$(subst :, ,$c)), \
$(__gmsl_t))))$(__gmsl_t))
# Common character classes for use with the tr function. Each of
# these is actually a variable declaration and must be wrapped with
# $() or ${} to be used.
[A-Z] := A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #
[a-z] := a b c d e f g h i j k l m n o p q r s t u v w x y z #
[0-9] := 0 1 2 3 4 5 6 7 8 9 #
[A-F] := A B C D E F #
# ----------------------------------------------------------------------------
# Function: uc
# Arguments: 1: Text to upper case
# Returns: Returns the text in upper case
# ----------------------------------------------------------------------------
uc = $(__gmsl_tr1)$(call assert_no_dollar,$0,$1)$(call tr,$([a-z]),$([A-Z]),$1)
# ----------------------------------------------------------------------------
# Function: lc
# Arguments: 1: Text to lower case
# Returns: Returns the text in lower case
# ----------------------------------------------------------------------------
lc = $(__gmsl_tr1)$(call assert_no_dollar,$0,$1)$(call tr,$([A-Z]),$([a-z]),$1)
# ----------------------------------------------------------------------------
# Function: strlen
# Arguments: 1: A string
# Returns: Returns the length of the string
# ----------------------------------------------------------------------------
# This results in __gmsl_tab containing a tab
__gmsl_tab := #
__gmsl_characters := A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
__gmsl_characters += a b c d e f g h i j k l m n o p q r s t u v w x y z
__gmsl_characters += 0 1 2 3 4 5 6 7 8 9
__gmsl_characters += ` ~ ! @ \# $$ % ^ & * ( ) - _ = +
__gmsl_characters += { } [ ] \ : ; ' " < > , . / ? |
# This results in __gmsl_space containing just a space
__gmsl_empty :=
__gmsl_space := $(__gmsl_empty) $(__gmsl_empty)
strlen = $(__gmsl_tr1)$(call assert_no_dollar,$0,$1)$(strip $(eval __temp := $(subst $(__gmsl_space),x,$1))$(foreach a,$(__gmsl_characters),$(eval __temp := $$(subst $$a,x,$(__temp))))$(eval __temp := $(subst x,x ,$(__temp)))$(words $(__temp)))
# This results in __gmsl_newline containing just a newline
define __gmsl_newline
endef
# ----------------------------------------------------------------------------
# Function: substr
# Arguments: 1: A string
# 2: Start position (first character is 1)
# 3: End position (inclusive)
# Returns: A substring.
# Note: The string in $1 must not contain a §
# ----------------------------------------------------------------------------
substr = $(if $2,$(__gmsl_tr3)$(call assert_no_dollar,$0,$1$2$3)$(strip $(eval __temp := $$(subst $$(__gmsl_space),§ ,$$1))$(foreach a,$(__gmsl_characters),$(eval __temp := $$(subst $$a,$$a$$(__gmsl_space),$(__temp))))$(eval __temp := $(wordlist $2,$3,$(__temp))))$(subst §,$(__gmsl_space),$(subst $(__gmsl_space),,$(__temp))))
endif # __gmsl_have_eval
# ###########################################################################
# SET MANIPULATION FUNCTIONS
# ###########################################################################
# Sets are represented by sorted, deduplicated lists. To create a set
# from a list use set_create, or start with the empty_set and
# set_insert individual elements
# This is the empty set
empty_set :=
# ----------------------------------------------------------------------------
# Function: set_create
# Arguments: 1: A list of set elements
# Returns: Returns the newly created set
# ----------------------------------------------------------------------------
set_create = $(__gmsl_tr1)$(sort $1)
# ----------------------------------------------------------------------------
# Function: set_insert
# Arguments: 1: A single element to add to a set
# 2: A set
# Returns: Returns the set with the element added
# ----------------------------------------------------------------------------
set_insert = $(__gmsl_tr2)$(sort $1 $2)
# ----------------------------------------------------------------------------
# Function: set_remove
# Arguments: 1: A single element to remove from a set
# 2: A set
# Returns: Returns the set with the element removed
# ----------------------------------------------------------------------------
set_remove = $(__gmsl_tr2)$(filter-out $1,$2)
# ----------------------------------------------------------------------------
# Function: set_is_member, set_is_not_member
# Arguments: 1: A single element
# 2: A set
# Returns: (set_is_member) Returns $(true) if the element is in the set
# (set_is_not_member) Returns $(false) if the element is in the set
# ----------------------------------------------------------------------------
set_is_member = $(__gmsl_tr2)$(if $(filter $1,$2),$(true),$(false))
set_is_not_member = $(__gmsl_tr2)$(if $(filter $1,$2),$(false),$(true))
# ----------------------------------------------------------------------------
# Function: set_union
# Arguments: 1: A set
# 2: Another set
# Returns: Returns the union of the two sets
# ----------------------------------------------------------------------------
set_union = $(__gmsl_tr2)$(sort $1 $2)
# ----------------------------------------------------------------------------
# Function: set_intersection
# Arguments: 1: A set
# 2: Another set
# Returns: Returns the intersection of the two sets
# ----------------------------------------------------------------------------
set_intersection = $(__gmsl_tr2)$(filter $1,$2)
# ----------------------------------------------------------------------------
# Function: set_is_subset
# Arguments: 1: A set
# 2: Another set
# Returns: Returns $(true) if the first set is a subset of the second
# ----------------------------------------------------------------------------
set_is_subset = $(__gmsl_tr2)$(call set_equal,$(call set_intersection,$1,$2),$1)
# ----------------------------------------------------------------------------
# Function: set_equal
# Arguments: 1: A set
# 2: Another set
# Returns: Returns $(true) if the two sets are identical
# ----------------------------------------------------------------------------
set_equal = $(__gmsl_tr2)$(call seq,$1,$2)
# ###########################################################################
# ARITHMETIC LIBRARY
# ###########################################################################
# Integers a represented by lists with the equivalent number of x's.
# For example the number 4 is x x x x.
# ----------------------------------------------------------------------------
# Function: int_decode
# Arguments: 1: A number of x's representation
# Returns: Returns the integer for human consumption that is represented
# by the string of x's
# ----------------------------------------------------------------------------
int_decode = $(__gmsl_tr1)$(if $1,$(if $(call seq,$(word 1,$1),x),$(words $1),$1),0)
# ----------------------------------------------------------------------------
# Function: int_encode
# Arguments: 1: A number in human-readable integer form
# Returns: Returns the integer encoded as a string of x's
# ----------------------------------------------------------------------------
__int_encode = $(if $1,$(if $(call seq,$(words $(wordlist 1,$1,$2)),$1),$(wordlist 1,$1,$2),$(call __int_encode,$1,$(if $2,$2 $2,x))))
__strip_leading_zero = $(if $1,$(if $(call seq,$(patsubst 0%,%,$1),$1),$1,$(call __strip_leading_zero,$(patsubst 0%,%,$1))),0)
int_encode = $(__gmsl_tr1)$(call __int_encode,$(call __strip_leading_zero,$1))
# The arithmetic library functions come in two forms: one form of each
# function takes integers as arguments and the other form takes the
# encoded form (x's created by a call to int_encode). For example,
# there are two plus functions:
#
# plus Called with integer arguments and returns an integer
# int_plus Called with encoded arguments and returns an encoded result
#
# plus will be slower than int_plus because its arguments and result
# have to be translated between the x's format and integers. If doing
# a complex calculation use the int_* forms with a single encoding of
# inputs and single decoding of the output. For simple calculations
# the direct forms can be used.
# Helper function used to wrap an int_* function into a function that
# takes a pair of integers, perhaps a function and returns an integer
# result
__gmsl_int_wrap = $(call int_decode,$(call $1,$(call int_encode,$2),$(call int_encode,$3)))
__gmsl_int_wrap1 = $(call int_decode,$(call $1,$(call int_encode,$2)))
__gmsl_int_wrap2 = $(call $1,$(call int_encode,$2),$(call int_encode,$3))
# ----------------------------------------------------------------------------
# Function: int_plus
# Arguments: 1: A number in x's representation
# 2: Another number in x's represntation
# Returns: Returns the sum of the two numbers in x's representation
# ----------------------------------------------------------------------------
int_plus = $(strip $(__gmsl_tr2)$1 $2)
# ----------------------------------------------------------------------------
# Function: plus (wrapped version of int_plus)
# Arguments: 1: An integer
# 2: Another integer
# Returns: Returns the sum of the two integers
# ----------------------------------------------------------------------------
plus = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_plus,$1,$2)
# ----------------------------------------------------------------------------
# Function: int_subtract
# Arguments: 1: A number in x's representation
# 2: Another number in x's represntation
# Returns: Returns the difference of the two numbers in x's representation,
# or outputs an error on a numeric underflow
# ----------------------------------------------------------------------------
int_subtract = $(strip $(__gmsl_tr2)$(if $(call int_gte,$1,$2), \
$(filter-out xx,$(join $1,$2)), \
$(call __gmsl_warning,Subtraction underflow)))
# ----------------------------------------------------------------------------
# Function: subtract (wrapped version of int_subtract)
# Arguments: 1: An integer
# 2: Another integer
# Returns: Returns the difference of the two integers,
# or outputs an error on a numeric underflow
# ----------------------------------------------------------------------------
subtract = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_subtract,$1,$2)
# ----------------------------------------------------------------------------
# Function: int_multiply
# Arguments: 1: A number in x's representation
# 2: Another number in x's represntation
# Returns: Returns the product of the two numbers in x's representation
# ----------------------------------------------------------------------------
int_multiply = $(strip $(__gmsl_tr2)$(foreach a,$1,$2))
# ----------------------------------------------------------------------------
# Function: multiply (wrapped version of int_multiply)
# Arguments: 1: An integer
# 2: Another integer
# Returns: Returns the product of the two integers
# ----------------------------------------------------------------------------
multiply = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_multiply,$1,$2)
# ----------------------------------------------------------------------------
# Function: int_divide
# Arguments: 1: A number in x's representation
# 2: Another number in x's represntation
# Returns: Returns the result of integer division of argument 1 divided
# by argument 2 in x's representation
# ----------------------------------------------------------------------------
int_divide = $(__gmsl_tr2)$(strip $(if $1,$(if $2, \
$(subst M,x,$(filter-out x,$(subst $2,M,$1))), \
$(call __gmsl_error,Division by zero))))
# ----------------------------------------------------------------------------
# Function: divide (wrapped version of int_divide)
# Arguments: 1: An integer
# 2: Another integer
# Returns: Returns the integer division of the first argument by the second
# ----------------------------------------------------------------------------
divide = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_divide,$1,$2)
# ----------------------------------------------------------------------------
# Function: int_modulo
# Arguments: 1: A number in x's representation
# 2: Another number in x's represntation
# Returns: Returns the remainder of integer division of argument 1 divided
# by argument 2 in x's representation
# ----------------------------------------------------------------------------
int_modulo = $(__gmsl_tr2)$(strip $(if $1,$(if $2, \
$(filter-out M,$(subst $2,M,$1)), \
$(call __gmsl_error,Division by zero))))
# ----------------------------------------------------------------------------
# Function: modulo (wrapped version of int_modulo)
# Arguments: 1: An integer
# 2: Another integer
# Returns: Returns the remainder of integer division of the first argument
# by the second
# ----------------------------------------------------------------------------
modulo = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_modulo,$1,$2)
# ----------------------------------------------------------------------------
# Function: int_max, int_min
# Arguments: 1: A number in x's representation
# 2: Another number in x's represntation
# Returns: Returns the maximum or minimum of its arguments in x's
# representation
# ----------------------------------------------------------------------------
int_max = $(__gmsl_tr2)$(subst xx,x,$(join $1,$2))
int_min = $(__gmsl_tr2)$(subst xx,x,$(filter xx,$(join $1,$2)))
# ----------------------------------------------------------------------------
# Function: max, min
# Arguments: 1: An integer
# 2: Another integer
# Returns: Returns the maximum or minimum of its integer arguments
# ----------------------------------------------------------------------------
max = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_max,$1,$2)
min = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_min,$1,$2)
# ----------------------------------------------------------------------------
# Function: int_gt, int_gte, int_lt, int_lte, int_eq, int_ne
# Arguments: Two x's representation numbers to be compared
# Returns: $(true) or $(false)
#
# int_gt First argument greater than second argument
# int_gte First argument greater than or equal to second argument
# int_lt First argument less than second argument
# int_lte First argument less than or equal to second argument
# int_eq First argument is numerically equal to the second argument
# int_ne First argument is not numerically equal to the second argument
# ----------------------------------------------------------------------------
int_gt = $(__gmsl_tr2)$(call __gmsl_make_bool, \
$(filter-out $(words $2), \
$(words $(call int_max,$1,$2))))
int_gte = $(__gmsl_tr2)$(call __gmsl_make_bool, \
$(call int_gt,$1,$2)$(call int_eq,$1,$2))
int_lt = $(__gmsl_tr2)$(call __gmsl_make_bool, \
$(filter-out $(words $1), \
$(words $(call int_max,$1,$2))))
int_lte = $(__gmsl_tr2)$(call __gmsl_make_bool, \
$(call int_lt,$1,$2)$(call int_eq,$1,$2))
int_eq = $(__gmsl_tr2)$(call __gmsl_make_bool, \
$(filter $(words $1),$(words $2)))
int_ne = $(__gmsl_tr2)$(call __gmsl_make_bool, \
$(filter-out $(words $1),$(words $2)))
# ----------------------------------------------------------------------------
# Function: gt, gte, lt, lte, eq, ne
# Arguments: Two integers to be compared
# Returns: $(true) or $(false)
#
# gt First argument greater than second argument
# gte First argument greater than or equal to second argument
# lt First argument less than second argument
# lte First argument less than or equal to second argument
# eq First argument is numerically equal to the second argument
# ne First argument is not numerically equal to the second argument
# ----------------------------------------------------------------------------
gt = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_gt,$1,$2)
gte = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_gte,$1,$2)
lt = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_lt,$1,$2)
lte = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_lte,$1,$2)
eq = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_eq,$1,$2)
ne = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_ne,$1,$2)
# increment adds 1 to its argument, decrement subtracts 1. Note that
# decrement does not range check and hence will not underflow, but
# will incorrectly say that 0 - 1 = 0
# ----------------------------------------------------------------------------
# Function: int_inc
# Arguments: 1: A number in x's representation
# Returns: The number incremented by 1 in x's representation
# ----------------------------------------------------------------------------
int_inc = $(strip $(__gmsl_tr1)$1 x)
# ----------------------------------------------------------------------------
# Function: inc
# Arguments: 1: An integer
# Returns: The argument incremented by 1
# ----------------------------------------------------------------------------
inc = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_inc,$1)
# ----------------------------------------------------------------------------
# Function: int_dec
# Arguments: 1: A number in x's representation
# Returns: The number decremented by 1 in x's representation
# ----------------------------------------------------------------------------
int_dec = $(__gmsl_tr1)$(strip \
$(if $(call sne,0,$(words $1)), \
$(wordlist 2,$(words $1),$1)))
# ----------------------------------------------------------------------------
# Function: dec
# Arguments: 1: An integer
# Returns: The argument decremented by 1
# ----------------------------------------------------------------------------
dec = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_dec,$1)
# double doubles its argument, and halve halves it
# ----------------------------------------------------------------------------
# Function: int_double
# Arguments: 1: A number in x's representation
# Returns: The number doubled (i.e. * 2) and returned in x's representation
# ----------------------------------------------------------------------------
int_double = $(strip $(__gmsl_tr1)$1 $1)
# ----------------------------------------------------------------------------
# Function: double
# Arguments: 1: An integer
# Returns: The integer times 2
# ----------------------------------------------------------------------------
double = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_double,$1)
# ----------------------------------------------------------------------------
# Function: int_halve
# Arguments: 1: A number in x's representation
# Returns: The number halved (i.e. / 2) and returned in x's representation
# ----------------------------------------------------------------------------
int_halve = $(__gmsl_tr1)$(strip $(subst xx,x,$(filter-out xy x y, \
$(join $1,$(foreach a,$1,y x)))))
# ----------------------------------------------------------------------------
# Function: halve
# Arguments: 1: An integer
# Returns: The integer divided by 2
# ----------------------------------------------------------------------------
halve = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_halve,$1)
# ----------------------------------------------------------------------------
# Function: sequence
# Arguments: 1: An integer
# 2: An integer
# Returns: The sequence [arg1, arg2] of integers if arg1 < arg2 or
# [arg2, arg1] if arg2 > arg1. If arg1 == arg1 return [arg1]
# ----------------------------------------------------------------------------
sequence = $(__gmsl_tr2)$(strip $(if $(call lte,$1,$2), \
$(call __gmsl_sequence_up,$1,$2), \
$(call __gmsl_sequence_dn,$2,$1)))
__gmsl_sequence_up = $(if $(call seq,$1,$2),$1,$1 $(call __gmsl_sequence_up,$(call inc,$1),$2))
__gmsl_sequence_dn = $(if $(call seq,$1,$2),$1,$2 $(call __gmsl_sequence_dn,$1,$(call dec,$2)))
# ----------------------------------------------------------------------------
# Function: dec2hex, dec2bin, dec2oct
# Arguments: 1: An integer
# Returns: The decimal argument converted to hexadecimal, binary or
# octal
# ----------------------------------------------------------------------------
__gmsl_digit = $(subst 15,f,$(subst 14,e,$(subst 13,d,$(subst 12,c,$(subst 11,b,$(subst 10,a,$1))))))
dec2hex = $(call __gmsl_dec2base,$(call int_encode,$1),$(call int_encode,16))
dec2bin = $(call __gmsl_dec2base,$(call int_encode,$1),$(call int_encode,2))
dec2oct = $(call __gmsl_dec2base,$(call int_encode,$1),$(call int_encode,8))
__gmsl_base_divide = $(subst $2,X ,$1)
__gmsl_q = $(strip $(filter X,$1))
__gmsl_r = $(words $(filter x,$1))
__gmsl_dec2base = $(eval __gmsl_temp := $(call __gmsl_base_divide,$1,$2))$(call __gmsl_dec2base_,$(call __gmsl_q,$(__gmsl_temp)),$(call __gmsl_r,$(__gmsl_temp)),$2)
__gmsl_dec2base_ = $(if $1,$(call __gmsl_dec2base,$(subst X,x,$1),$3))$(call __gmsl_digit,$2)
ifdef __gmsl_have_eval
# ###########################################################################
# ASSOCIATIVE ARRAYS
# ###########################################################################
# Magic string that is very unlikely to appear in a key or value
__gmsl_aa_magic := faf192c8efbc25c27992c5bc5add390393d583c6
# ----------------------------------------------------------------------------
# Function: set
# Arguments: 1: Name of associative array
# 2: The key value to associate
# 3: The value associated with the key
# Returns: Nothing
# ----------------------------------------------------------------------------
set = $(__gmsl_tr3)$(call assert_no_space,$0,$1$2)$(call assert_no_dollar,$0,$1$2$3)$(eval __gmsl_aa_$1_$(__gmsl_aa_magic)_$2_gmsl_aa_$1 := $3)
# Only used internally by memoize function
__gmsl_set = $(call set,$1,$2,$3)$3
# ----------------------------------------------------------------------------
# Function: get
# Arguments: 1: Name of associative array
# 2: The key to retrieve
# Returns: The value stored in the array for that key
# ----------------------------------------------------------------------------
get = $(strip $(__gmsl_tr2)$(call assert_no_space,$0,$1$2)$(call assert_no_dollar,$0,$1$2)$(__gmsl_aa_$1_$(__gmsl_aa_magic)_$2_gmsl_aa_$1))
# ----------------------------------------------------------------------------
# Function: keys
# Arguments: 1: Name of associative array
# Returns: Returns a list of all defined keys in the array
# ----------------------------------------------------------------------------
keys = $(__gmsl_tr1)$(call assert_no_space,$0,$1)$(call assert_no_dollar,$0,$1)$(sort $(patsubst __gmsl_aa_$1_$(__gmsl_aa_magic)_%_gmsl_aa_$1,%, \
$(filter __gmsl_aa_$1_$(__gmsl_aa_magic)_%_gmsl_aa_$1,$(.VARIABLES))))
# ----------------------------------------------------------------------------
# Function: defined
# Arguments: 1: Name of associative array
# 2: The key to test
# Returns: Returns true if the key is defined (i.e. not empty)
# ----------------------------------------------------------------------------
defined = $(__gmsl_tr2)$(call assert_no_space,$0,$1$2)$(call assert_no_dollar,$0,$1$2)$(call sne,$(call get,$1,$2),)
endif # __gmsl_have_eval
ifdef __gmsl_have_eval
# ###########################################################################
# NAMED STACKS
# ###########################################################################
# ----------------------------------------------------------------------------
# Function: push
# Arguments: 1: Name of stack
# 2: Value to push onto the top of the stack (must not contain
# a space)
# Returns: None
# ----------------------------------------------------------------------------
push = $(__gmsl_tr2)$(call assert_no_space,$0,$1$2)$(call assert_no_dollar,$0,$1$2)$(eval __gmsl_stack_$1 := $2 $(if $(filter-out undefined,\
$(origin __gmsl_stack_$1)),$(__gmsl_stack_$1)))
# ----------------------------------------------------------------------------
# Function: pop
# Arguments: 1: Name of stack
# Returns: Top element from the stack after removing it
# ----------------------------------------------------------------------------
pop = $(__gmsl_tr1)$(call assert_no_space,$0,$1)$(call assert_no_dollar,$0,$1)$(strip $(if $(filter-out undefined,$(origin __gmsl_stack_$1)), \
$(call first,$(__gmsl_stack_$1)) \
$(eval __gmsl_stack_$1 := $(call rest,$(__gmsl_stack_$1)))))
# ----------------------------------------------------------------------------
# Function: peek
# Arguments: 1: Name of stack
# Returns: Top element from the stack without removing it
# ----------------------------------------------------------------------------
peek = $(__gmsl_tr1)$(call assert_no_space,$0,$1)$(call assert_no_dollar,$0,$1)$(call first,$(__gmsl_stack_$1))
# ----------------------------------------------------------------------------
# Function: depth
# Arguments: 1: Name of stack
# Returns: Number of items on the stack
# ----------------------------------------------------------------------------
depth = $(__gmsl_tr1)$(call assert_no_space,$0,$1)$(call assert_no_dollar,$0,$1)$(words $(__gmsl_stack_$1))
endif # __gmsl_have_eval
ifdef __gmsl_have_eval
# ###########################################################################
# STRING CACHE
# ###########################################################################
# ----------------------------------------------------------------------------
# Function: memoize
# Arguments: 1. Name of the function to be called if the string
# has not been previously seen
# 2. A string
# Returns: Returns the result of a memo function (which the user must
# define) on the passed in string and remembers the result.
#
# Example: Set memo = $(shell echo "$1" | md5sum) to make a cache
# of MD5 hashes of strings. $(call memoize,memo,foo bar baz)
# ----------------------------------------------------------------------------
__gmsl_memoize = $(subst $(__gmsl_space),§,$1)cc2af1bb7c4482f2ba75e338b963d3e7$(subst $(__gmsl_space),§,$2)
memoize = $(__gmsl_tr2)$(strip $(if $(call defined,__gmsl_m,$(__gmsl_memoize)),\
$(call get,__gmsl_m,$(__gmsl_memoize)), \
$(call __gmsl_set,__gmsl_m,$(__gmsl_memoize),$(call $1,$2))))
endif # __gmsl_have_eval
# ###########################################################################
# DEBUGGING FACILITIES
# ###########################################################################
# ----------------------------------------------------------------------------
# Target: gmsl-echo-%
# Arguments: The % should be replaced by the name of a variable that you
# wish to print out.
# Action: Echos the value of the variable that matches the %.
# For example, 'make gmsl-echo-SHELL' will output the value of
# the SHELL variable.
# ----------------------------------------------------------------------------
gmsl-echo-%: ; @echo $($*)
# ----------------------------------------------------------------------------
# Target: gmsl-print-%
# Arguments: The % should be replaced by the name of a variable that you
# wish to print out.
# Action: Echos the name of the variable that matches the % and its value.
# For example, 'make gmsl-print-SHELL' will output the value of
# the SHELL variable
# ----------------------------------------------------------------------------
gmsl-print-%: ; @echo $* = $($*)
# ----------------------------------------------------------------------------
# Function: assert
# Arguments: 1: A boolean that must be true or the assertion will fail
# 2: The message to print with the assertion
# Returns: None
# ----------------------------------------------------------------------------
assert = $(if $2,$(if $1,,$(call __gmsl_error,Assertion failure: $2)))
# ----------------------------------------------------------------------------
# Function: assert_exists
# Arguments: 1: Name of file that must exist, if it is missing an assertion
# will be generated
# Returns: None
# ----------------------------------------------------------------------------
assert_exists = $(if $0,$(call assert,$(wildcard $1),file '$1' missing))
# ----------------------------------------------------------------------------
# Function: assert_no_dollar
# Arguments: 1: Name of a function being executd
# 2: Arguments to check
# Returns: None
# ----------------------------------------------------------------------------
assert_no_dollar = $(call __gmsl_tr2)$(call assert,$(call not,$(findstring $(__gmsl_dollar),$2)),$1 called with a dollar sign in argument)
# ----------------------------------------------------------------------------
# Function: assert_no_space
# Arguments: 1: Name of a function being executd
# 2: Arguments to check
# Returns: None
# ----------------------------------------------------------------------------
ifeq ($(__gmsl_spaced_vars),$(false))
assert_no_space = $(call assert,$(call not,$(findstring $(__gmsl_aa_magic),$(subst $(__gmsl_space),$(__gmsl_aa_magic),$2))),$1 called with a space in argument)
else
assert_no_space =
endif