-
Notifications
You must be signed in to change notification settings - Fork 0
/
ersatz-lib.scm
646 lines (522 loc) · 20.4 KB
/
ersatz-lib.scm
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
;;
;;
;; The Ersatz template library.
;;
;; Based on the Ocaml Jingoo library by Masaki WATANABE, which is in
;; turn based on the Python Jinja2 library.
;;
;; Copyright 2012-2020 Ivan Raikov.
;;
;; This program is free software: you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation, either version 3 of the
;; License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;;
;; A full copy of the GPL license can be found at
;; <http://www.gnu.org/licenses/>.
;;
(module ersatz
(
debug
from-string from-file
statements-from-string statements-from-file
eval-expr eval-statement eval-statements
template-std-env init-context
keep-lexer-table lexer-trace
template-environment? make-template-environment make-lexer make-lexer*
tmpl-env-autoescape tmpl-env-search-path tmpl-env-filters tmpl-env-lexer
template-context? make-template-context
tmpl-ctx-frame-stack tmpl-ctx-macro-table tmpl-ctx-namespace-table tmpl-ctx-filter-table tmpl-ctx-buffer
template-context-frame?
template-macro? make-template-macro
tmpl-mac-args tmpl-mac-defaults tmpl-mac-code
macro-code?
tvalue tvalue? Tnull Tint Tbool Tfloat Tstr Tobj Tlist Tset Tfun Tvector
sexpr->tvalue tvalue->sexpr tvalue->pystr
tstmt tstmt? TextStatement ExpandStatement IfStatement ForStatement IncludeStatement
ExtendsStatement ImportStatement FromImportStatement SetStatement BlockStatement NamespaceStatement
MacroStatement FilterStatement CallStatement WithStatement AutoEscapeStatement
texpr texpr? IdentExpr LiteralExpr NotOpExpr NegativeOpExpr PlusOpExpr MinusOpExpr
TimesOpExpr PowerOpExpr DivOpExpr ModOpExpr AndOpExpr OrOpExpr NotEqOpExpr EqEqOpExpr
LtOpExpr GtOpExpr LtEqOpExpr GtEqOpExpr DotExpr BracketExpr ApplyExpr ListExpr SetExpr ObjExpr
TestOpExpr KeywordExpr AliasExpr InOpExpr
eq-eq list-same obj-same
op-default op-length op-reverse op-append op-cons op-first op-last op-slice
op-plus op-minus op-times op-power op-div op-mod
op-abs op-round op-range op-toint op-tofloat
op-or op-and
op-upper op-lower op-join op-substring
op-replace op-truncate
op-capitalize op-title op-escape-html op-urlize op-striptags op-trim op-pad
op-wordcount op-sort op-dictsort op-map
op-list op-sublist op-batch op-groupby
op-vector op-ref op-update op-subvector
)
(import scheme (chicken base)
(only (chicken file) file-exists? delete-file )
(only (chicken process) system)
(only (chicken process-context) current-directory)
(only (chicken pathname) make-pathname)
(only (chicken string) reverse-list->string ->string conc string-intersperse string-split)
(only (chicken pretty-print) pp)
(only (chicken format) fprintf sprintf printf)
(only (chicken sort) sort)
(only srfi-1 every any drop fold find filter take last first concatenate)
(only (chicken irregex) string->irregex sre->irregex irregex-search irregex-split irregex-replace/all irregex-match-num-submatches
irregex-match-start-index)
datatype lalr lalr-driver uri-generic
(only utf8 string-length substring)
(only utf8-srfi-13 string-null? string-every string-upcase
string-downcase string-titlecase string-concatenate string-trim-both string-pad
string-ci< string<)
(only utf8-srfi-14 char-set:lower-case char-set:upper-case char-set:whitespace
char-set char-set->string char-set-contains?)
(only silex lex-tables lexer-make-IS lexer-make-lexer )
(only vector-lib vector-fold)
)
(define (execute explist)
(define (smooth lst)
(let ((slst (map ->string lst)))
(string-intersperse (cons (car slst) (cdr slst)) " ") ) )
(for-each
(lambda (cmd)
(system cmd))
(map smooth explist)))
(define-syntax run
(syntax-rules ()
((_ exp ...)
(execute (list `exp ...)))))
(define debug (make-parameter 0))
;;
;; template environment
;;
;; autoescape : if true or a procedure, template variables are auto escaped when output
;; search-path : search path list; if empty, search current directory only
;; filters : user-defined filters
;; lexer : lexical analyzer to be used (allowing for customizable syntax)
(define-record-type template-environment
(make-template-environment autoescape search-path filters lexer )
template-environment?
(autoescape tmpl-env-autoescape)
(search-path tmpl-env-search-path)
(filters tmpl-env-filters)
(lexer tmpl-env-lexer)
)
;;
;; template lexical analyzer
;;
;; lexer-table : the lexer table procedure (created by silex)
;; token-cache : the lexer token cache parameter
;; lexer-reset : the lexer reset procedure
(define-record-type template-lexer
(make-template-lexer lexer-table token-cache lexer-reset)
template-lexer?
(lexer-table tmpl-lexer-table)
(token-cache tmpl-lexer-cache)
(lexer-reset tmpl-lexer-reset)
)
;;
;; template context
;;
(define-record-type template-context
(make-template-context frame-stack macro-table namespace-table filter-table buffer)
template-context?
(frame-stack tmpl-ctx-frame-stack)
(macro-table tmpl-ctx-macro-table)
(namespace-table tmpl-ctx-namespace-table)
(filter-table tmpl-ctx-filter-table)
(buffer tmpl-ctx-buffer))
(define (template-context-frame? lst)
(every (lambda (x) (and (string? (car x)) (tvalue? (cdr x)))) lst))
(define-record-type template-macro
(make-template-macro args defaults code)
template-macro?
(args tmpl-mac-args)
(defaults tmpl-mac-defaults)
(code tmpl-mac-code))
(define (list-of pred)
(lambda (lst) (every pred lst)))
(define-datatype tvalue tvalue?
(Tnull)
(Tint (i integer?))
(Tbool (b boolean?))
(Tfloat (n number?))
(Tstr (s string?))
(Tobj (x tvalue-alist?))
(Tlist (x tvalue-list?))
(Tset (x tvalue-list?))
(Tfun (p procedure?))
(Tvector (v vector?)))
(define (tvalue-stringp v)
(cases tvalue v
(Tstr (s) (Tbool #t))
(else (Tbool #f))))
(define (tvalue-intp v)
(cases tvalue v
(Tint (i) (Tbool #t))
(else (Tbool #f))))
(define (tvalue-floatp v)
(cases tvalue v
(Tfloat (i) (Tbool #t))
(else (Tbool #f))))
(define (tvalue-listp v)
(cases tvalue v
(Tlist (l) (Tbool #t))
(else (Tbool #f))))
(define (tvalue-setp v)
(cases tvalue v
(Tset (l) (Tbool #t))
(else (Tbool #f))))
(define (tvalue-objp v)
(cases tvalue v
(Tobj (l) (Tbool #t))
(else (Tbool #f))))
(define (tvalue-funp v)
(cases tvalue v
(Tfun (f) (Tbool #t))
(else (Tbool #f))))
(define (tvalue-vectorp v)
(cases tvalue v
(Tvector (v) (Tbool #t))
(else (Tbool #f))))
(define tvalue-alist?
(list-of (lambda (x) (and (symbol? (car x)) (tvalue? (cdr x))))))
(define tvalue-list? (list-of tvalue?))
(define texpr-alist?
(list-of (lambda (x) (and (symbol? (car x)) (texpr? (cdr x))))))
(define-record-printer (tvalue x out)
(cases tvalue x
(Tnull () (fprintf out "<null>"))
(Tint (i) (fprintf out "~A" i))
(Tbool (b) (fprintf out "~A" (if b "true" "false")))
(Tfloat (n) (fprintf out "~A" n))
(Tstr (s) (fprintf out "~A" s))
(Tobj (x) (fprintf out "<obj>"))
(Tlist (x) (fprintf out "<list>"))
(Tset (x) (fprintf out "<set>"))
(Tfun (x) (fprintf out "<function>"))
(Tvector (x) (fprintf out "<vector>"))
))
(define-record-printer (texpr x out)
(cases texpr x
(IdentExpr (s) (fprintf out "Ident(~A)" s))
(LiteralExpr (v) (fprintf out "Literal (~A)" v))
(NotOpExpr (e) (fprintf out "Not (~A)" e))
(NegativeOpExpr (e) (fprintf out "Neg (~A)" e))
(PlusOpExpr (e1 e2) (fprintf out "Plus (~A,~A)" e1 e2))
(MinusOpExpr (e1 e2) (fprintf out "Minus (~A,~A)" e1 e2))
(TimesOpExpr (e1 e2) (fprintf out "Times (~A,~A)" e1 e2))
(PowerOpExpr (e1 e2) (fprintf out "Power (~A,~A)" e1 e2))
(DivOpExpr (e1 e2) (fprintf out "Div (~A,~A)" e1 e2))
(ModOpExpr (e1 e2) (fprintf out "Mod (~A,~A)" e1 e2))
(AndOpExpr (e1 e2) (fprintf out "And (~A,~A)" e1 e2))
(OrOpExpr (e1 e2) (fprintf out "Or (~A,~A)" e1 e2))
(NotEqOpExpr (e1 e2) (fprintf out "Neq (~A,~A)" e1 e2))
(EqEqOpExpr (e1 e2) (fprintf out "Eq (~A,~A)" e1 e2))
(LtOpExpr (e1 e2) (fprintf out "Lt (~A,~A)" e1 e2))
(GtOpExpr (e1 e2) (fprintf out "PGt (~A,~A)" e1 e2))
(LtEqOpExpr (e1 e2) (fprintf out "LtEq (~A,~A)" e1 e2))
(GtEqOpExpr (e1 e2) (fprintf out "GtEq (~A,~A)" e1 e2))
(DotExpr (e1 e2) (fprintf out "Dot (~A,~A)" e1 e2))
(BracketExpr (e1 e2) (fprintf out "Brk (~A,~A)" e1 e2))
(ApplyExpr (e a) (fprintf out "Apply (~A,~A)" e a))
(ListExpr (xs) (fprintf out "List (~A)" xs))
(SetExpr (xs) (fprintf out "Set (~A)" xs))
(ObjExpr (xs) (fprintf out "Obj (~A)" xs))
(TestOpExpr (e1 e2) (fprintf out "Test (~A,~A)" e1 e2))
(KeywordExpr (e1 e2) (fprintf out "Keyword (~A,~A)" e1 e2))
(AliasExpr (e1 e2) (fprintf out "Alias (~A,~A)" e1 e2))
(InOpExpr (e1 e2) (fprintf out "In (~A,~A)" e1 e2))
))
(define (type-string-of-tvalue v)
(cases tvalue v
(Tnull () "null")
(Tint (i) "int")
(Tbool (b) "bool")
(Tfloat (n) "float")
(Tstr (s) "string")
(Tobj (x) "obj")
(Tlist (x) "list")
(Tset (x) "set")
(Tfun (x) "function")
(Tvector (x) "vector")
))
(define (sexpr->tvalue x)
(cond
((boolean? x) (Tbool x))
((integer? x) (Tint x))
((number? x) (Tfloat x))
((string? x) (Tstr x))
((char? x) (Tstr (->string x)))
((symbol? x) (Tstr (->string x)))
((procedure? x) (Tfun x))
((vector? x) (Tvector (list->vector (map sexpr->tvalue (vector->list x)))))
((null? x) (Tlist '()))
((pair? x)
(cond
((and (pair? (car x)) (symbol? (car (car x))))
(Tobj (map (lambda (x) (cons (car x) (sexpr->tvalue (cdr x)))) x)))
(else (Tlist (map sexpr->tvalue x)))))
((tvalue? x) x)
(else (error 'sexpr->tvalue "cannot convert sexpr to tvalue" x))
))
(define (tvalue->sexpr x)
(cases tvalue x
(Tnull () '(tnull))
(Tint (i) i)
(Tbool (b) b)
(Tfloat (n) n)
(Tstr (s) s)
(Tobj (fs) (map (lambda (x) (cons (car x) (tvalue->sexpr (cdr x)))) fs))
(Tlist (vs) (map tvalue->sexpr vs))
(Tset (vs) (map tvalue->sexpr vs))
(Tfun (p) p)
(Tvector (v) v)
))
(define (tvalue->pystr x)
(define (join-list lst sep)
(string-concatenate (intersperse lst sep)))
(cases tvalue x
(Tnull () "None")
(Tint (i) (sprintf "~A" i))
(Tbool (b) (if b "True" "False"))
(Tfloat (n) (sprintf "~A" n))
(Tstr (s) (sprintf "'''~A'''" s))
(Tlist (vs) (sprintf "[~A]" (join-list (map tvalue->pystr vs) ", ")))
(Tobj (fs) (sprintf "{~A}" (join-list (map (lambda (x) (sprintf "'~A' : ~A" (car x)
(tvalue->pystr (cdr x)))) fs) ", ")))
(Tset (vs) (sprintf "{~A}" (join-list (map tvalue->pystr vs) ", ")))
(Tfun (p) p)
(Tvector (v) (sprintf "#[~A]" (join-list (map tvalue->pystr (vector->list v)) ", ")))
))
;; Template function arguments
;;
;; Arguments of template functions are defined as "tvalue list".
;; The filtered target is the LAST argument of filter function.
;;
;; For example, consider the following expansion of "x" with filter
;; function "foo" (with no keyword arguments) {{x|foo(10,20)}}
;;
;; The filter function "foo" takes 3 arguments, and internally is
;; evaluated like this:
;;
;; (foo 10 20 x)
(define tfun-args? tvalue-list?)
;; Template function keyword arguments
;; Keyword arguments of function are defined as (string * tvalue) list.
(define tfun-kwargs? tvalue-alist?)
(define-datatype tstmt tstmt?
(TextStatement (s string?))
(ExpandStatement (e texpr?))
(IfStatement (cb (list-of template-cond-clause?))
(el template-ast?))
(ForStatement (e1 texpr?)
(e2 texpr?)
(a template-ast?))
(IncludeStatement (s string?) (wcontext boolean?))
(ExtendsStatement (s string?))
(ImportStatement (s string?)
(w (lambda (x) (or (not x) (symbol? x)))))
(FromImportStatement (s string?)
(w (list-of texpr?)))
(SetStatement (e1 texpr?)
(e2 texpr?))
(NamespaceStatement (s symbol?) (bs texpr-alist?))
(BlockStatement (e texpr?) (f (lambda (x) (or (not x) (texpr? x))))
(b template-ast?))
(MacroStatement (e texpr?)
(a (list-of texpr?))
(b template-ast?))
(FilterStatement (e texpr?)
(b template-ast?))
(CallStatement (e texpr?)
(a1 (list-of texpr?))
(a2 (list-of texpr?) )
(b template-ast?))
(WithStatement (es (list-of texpr?))
(b template-ast?))
(AutoEscapeStatement (e texpr?)
(b template-ast?))
)
(define-record-printer (tstmt x out)
(cases tstmt x
(TextStatement (s)
(fprintf out "<TextStatement \"~A\">" s))
(ExpandStatement (e)
(fprintf out "<ExpandStatement ~A>" e))
(IfStatement (cb el)
(fprintf out "<IfStatement ~A ~A>" cb el))
(ForStatement (e1 e2 a)
(fprintf out "<ForStatement ~A ~A ~A>" e1 e2 a))
(IncludeStatement (s wcontext)
(fprintf out "<IncludeStatement ~A ~A>" s wcontext))
(ExtendsStatement (s)
(fprintf out "<ExtendsStatement ~A>" s))
(ImportStatement (s w)
(fprintf out "<ImportStatement ~A ~A>" s w))
(FromImportStatement (s w)
(fprintf out "<FromImportStatement ~A ~A>" s w))
(SetStatement (e1 e2)
(fprintf out "<SetStatement ~A ~A>" e1 e2))
(NamespaceStatement (s bs)
(fprintf out "<NamespaceStatement ~A : ~A>" s bs))
(BlockStatement (e f b)
(fprintf out "<BlockStatement ~A ~A ~A>" e f b))
(MacroStatement (e a b)
(fprintf out "<MacroStatement ~A ~A ~A>" e a b))
(FilterStatement (e b)
(fprintf out "<FilterStatement ~A ~A>" e b))
(CallStatement (e a1 a2 b)
(fprintf out "<CallStatement ~A ~A ~A ~A>" e a1 a2 b))
(WithStatement (es b)
(fprintf out "<WithStatement ~A ~A>" es b))
(AutoEscapeStatement (e b)
(fprintf out "<AutoEscapeStatement ~A ~A>" e b))
))
(define macro-code? (list-of tstmt?))
(define-datatype texpr texpr?
(IdentExpr (s symbol?))
(LiteralExpr (v tvalue?))
(NotOpExpr (e texpr?))
(NegativeOpExpr (e texpr?))
(PlusOpExpr (e1 texpr?) (e2 texpr?))
(MinusOpExpr (e1 texpr?) (e2 texpr?))
(TimesOpExpr (e1 texpr?) (e2 texpr?))
(PowerOpExpr (e1 texpr?) (e2 texpr?))
(DivOpExpr (e1 texpr?) (e2 texpr?))
(ModOpExpr (e1 texpr?) (e2 texpr?))
(AndOpExpr (e1 texpr?) (e2 texpr?))
(OrOpExpr (e1 texpr?) (e2 texpr?))
(NotEqOpExpr (e1 texpr?) (e2 texpr?))
(EqEqOpExpr (e1 texpr?) (e2 texpr?))
(LtOpExpr (e1 texpr?) (e2 texpr?))
(GtOpExpr (e1 texpr?) (e2 texpr?))
(LtEqOpExpr (e1 texpr?) (e2 texpr?))
(GtEqOpExpr (e1 texpr?) (e2 texpr?))
(DotExpr (e1 texpr?) (e2 texpr?))
(BracketExpr (e1 texpr?) (e2 texpr?))
(ApplyExpr (e texpr?) (a (list-of texpr?)))
(ListExpr (xs (list-of texpr?)))
(SetExpr (xs (list-of texpr?)))
(ObjExpr (xs (list-of expression-pair?)))
(TestOpExpr (e1 texpr?) (e2 texpr?))
(KeywordExpr (e1 texpr?) (e2 texpr?))
(AliasExpr (e1 texpr?) (e2 texpr?))
(InOpExpr (e1 texpr?) (e2 texpr?))
)
(define (expression-pair? x) (and (texpr? (car x)) (texpr? (cdr x))))
(define template-ast? (list-of tstmt?))
(define (template-cond-clause? x)
(and (texpr? (car x)) (template-ast? (cdr x))))
(define (template-std-env #!key
(autoescape #t)
(search-path '())
(filters '())
(lexer (make-template-lexer default-ersatz-lexer-table lexer-token-cache reset-lexer))
)
(make-template-environment
autoescape search-path filters lexer)
)
(include "runtime.scm")
;(define default-ersatz-lexer-table)
(define top-frame
`(
;; built-in filters
(abs . ,(func-arg1 op-abs))
(capitalize . ,(func-arg1 op-capitalize))
(escape . ,(func-arg1 op-escape-html))
(e . ,(func-arg1 op-escape-html)) ;; alias for escape
(float . ,(func-arg1 op-tofloat))
(int . ,(func-arg1 op-toint))
(first . ,(func-arg1 op-first))
(last . ,(func-arg1 op-last))
(length . ,(func-arg1 op-length))
(list . ,(func-arg1 op-list))
(lower . ,(func-arg1 op-lower))
(safe . ,(func-arg1 op-safe))
(strlen . ,(func-arg1 op-strlen))
(striptags . ,(func-arg1 op-striptags))
(sort . ,(func-arg1 op-sort))
(op-map . ,(func-arg2 op-map))
(upper . ,(func-arg1 op-upper))
(reverse . ,(func-arg1 op-reverse))
(append . ,(func-arg2 op-append))
(allCombs . ,(func-arg2 op-allCombs))
(cons . ,(func-arg2 op-cons))
(title . ,(func-arg1 op-title))
(trim . ,(func-arg1 op-trim))
(pad . ,(func-arg2 op-pad))
(urlize . ,(func-arg1 op-urlize))
(wordcount . ,(func-arg1 op-wordcount))
(dict . ,(func-arg1 op-dict))
(keys . ,(func-arg1 op-keys))
(attr . ,(func-arg2 op-attr))
(haskey . ,(func-arg2 op-haskey))
(groupby . ,(func-arg2 op-groupby))
(batch . ,(func-arg2 op-batch))
(default . ,(func-arg2 op-default))
(d . ,(func-arg2 op-default)) ;; alias for default
(join . ,(func-arg2 op-join))
(split . ,(func-arg2 op-split))
(slice . ,(func-arg2 op-slice))
(truncate . ,(func-arg2 op-truncate))
(range . ,(func-arg2 op-range))
(round . ,(func-arg2 op-round))
(replace . ,(func-arg3 op-replace))
(substring . ,(func-arg3 op-substring))
(sublist . ,(func-arg3 op-sublist))
(batch . ,(func-arg2 op-batch))
;; vector operations
(vector . ,(func-arg1 op-vector))
(subvector . ,(func-arg3 op-subvector))
(ref . ,(func-arg2 op-ref))
(update . ,(func-arg3 op-update))
;; built-in tests
(divisibleby . ,(func-arg2 test-divisibleby))
(even . ,(func-arg1 test-even))
(iterable . ,(func-arg1 test-iterable))
(lower . ,(func-arg1 test-lower))
(number . ,(func-arg1 test-number))
(odd . ,(func-arg1 test-odd))
(sameas . ,(func-arg2 test-sameas))
(sequence . ,(func-arg1 test-sequence))
(string . ,(func-arg1 test-string))
(upper . ,(func-arg1 test-upper))
))
(define (init-context #!key
(env (template-std-env))
(models '())
(open-buffer open-output-string)
)
(let ((env-values
`((is_autoescape . ,(Tbool (and (tmpl-env-autoescape env) #t))))))
(make-template-context
(list (append env-values models)
(append (tmpl-env-filters env)
top-frame)) ;; frame-stack
'() ;; macro-table
'() ;; namespace-table
'() ;; filter-table
(open-buffer) ;; buffer
)))
(include "make-ersatz-lexer.scm")
(include "parser.scm")
(include "eval.scm")
(define (from-file fn #!key
(env (template-std-env))
(models '())
(ctx #f))
(eval-statements (statements-from-file env fn)
env: env models: models ctx: ctx))
(define (from-string source #!key
(env (template-std-env))
(models '())
(ctx #f))
(eval-statements (statements-from-string env source)
env: env models: models ctx: ctx))
)