summaryrefslogtreecommitdiff
path: root/Build/source/utils/asymptote/process.cc
blob: 474b2f3d75242331fd0441c2e4778e5b2d7a8f37 (plain)
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
/*****
 * process.cc
 * Andy Hammerlindl 2006/08/19 
 *
 * Handles processing blocks of code (including files, strings, and the
 * interactive prompt, for listing and parse-only modes as well as actually
 * running it.
 *****/

#include "types.h"
#include "errormsg.h"
#include "genv.h"
#include "stm.h"
#include "settings.h"
#include "vm.h"
#include "program.h"
#include "interact.h"
#include "envcompleter.h"
#include "parser.h"
#include "fileio.h"

#include "stack.h"
#include "runtime.h"
#include "texfile.h"

#include "process.h"

namespace camp {
pen& defaultpen() {
  return processData().defaultpen;
}
}

namespace run {
void cleanup();
void exitFunction(vm::stack *Stack);
void updateFunction(vm::stack *Stack);
void purge(Int divisor=0);
}

namespace vm {
bool indebugger;  
}

using namespace settings;

using absyntax::file;
using trans::genv;
using trans::coenv;
using trans::env;
using trans::coder;
using types::record;

using interact::interactive;
using interact::uptodate;

using absyntax::runnable;
using absyntax::block;

mem::stack<processDataStruct *> processDataStack;

processDataStruct &processData() {
  assert(!processDataStack.empty());
  return *processDataStack.top();
}

// A process environment.  Basically this just serves as short-hand to start a
// new global environment (genv) and new process data at the same time.  When
// it goes out of scope, the process data is popped off the stack.  This also
// ensures that the data is popped even if an exception is thrown.
class penv {
  genv *_ge;
  processDataStruct pd;

  // Do not let this object be dynamically allocated.
  void *operator new(size_t);

public:
  penv() : _ge(0), pd() {
    // Push the processData first, as it needs to be on the stack before genv
    // is initialized.
    processDataStack.push(&pd);
    _ge = new genv;
  }

  virtual ~penv() {
    processDataStack.pop();
    delete _ge;
  }

  genv &ge() { return *_ge; }
};


void init(bool resetpath=true)
{
  vm::indebugger=false;
  uptodate=false;
  if(resetpath)
    setPath("");  /* On second and subsequent calls, sets the path
                     to what it was when the program started. */
}

// This helper class does nothing but call the interactiveTrans method of the
// base object in place of trans, so that the runnable can exhibit special
// behaviour when run at the interactive prompt.
class interactiveRunnable : public runnable {
  runnable *base;

public:
  interactiveRunnable(runnable *base)
    : runnable(base->getPos()), base(base) {}

  void prettyprint(ostream &out, Int indent) {
    absyntax::prettyname(out, "interactiveRunnable", indent);
    base->prettyprint(out, indent+1);
  }
  
  void trans(coenv &e) {
    base->interactiveTrans(e);
  }

  void transAsField(coenv &e, types::record *r) {
    // There is no interactiveTransAsField, as fields aren't declared at the top
    // level of the interactive prompt.
    base->transAsField(e, r);
  }
};
  
enum transMode {
  TRANS_INTERACTIVE,
  TRANS_NORMAL
};


// How to run a runnable in runnable-at-a-time mode.
bool runRunnable(runnable *r, coenv &e, istack &s, transMode tm=TRANS_NORMAL) {
  e.e.beginScope();

  lambda *codelet= tm==TRANS_INTERACTIVE ?
    interactiveRunnable(r).transAsCodelet(e) :
    r->transAsCodelet(e);
  em.sync();
  if(!em.errors()) {
    if(getSetting<bool>("translate")) print(cout,codelet->code);
    s.run(codelet);

    // Commits the changes made to the environment.
    e.e.collapseScope();
  } else {
    e.e.endScope(); // Remove any changes to the environment.

    // Should an interactive error hurt the status?
    em.statusError();

    return false;   
  }
  return true;
}

void runAutoplain(coenv &e, istack &s) {
  absyntax::runnable *r=absyntax::autoplainRunnable();
  runRunnable(r,e,s);
}

// Abstract base class for the core object being run in line-at-a-time mode, it
// may be a block of code, file, or interactive prompt.
struct icore {
  virtual ~icore() {}

  virtual void doParse() = 0;
  virtual void doList() = 0;

public:

  // preRun and postRun are the optional activities that take place before and
  // after running the code specified.  They can be overridden by a derived
  // class that wishes different behaviour.
  virtual void preRun(coenv &e, istack &s) {
    if(getSetting<bool>("autoplain"))
      runAutoplain(e,s);
  }

  virtual void run(coenv &e, istack &s, transMode tm=TRANS_NORMAL) = 0;

  virtual void postRun(coenv &, istack &s) {
    run::exitFunction(&s);
  }

  virtual void doRun(bool purge=false, transMode tm=TRANS_NORMAL) {
    em.sync();
    if(em.errors())
      return;

    try {
      if(purge) run::purge();
      
      penv pe;
      env base_env(pe.ge());
      coder base_coder(nullPos, "icore::doRun");
      coenv e(base_coder,base_env);

      vm::interactiveStack s;
      s.setInitMap(pe.ge().getInitMap());
      s.setEnvironment(&e);

      preRun(e,s);

      if(purge) run::purge();

      // Now that everything is set up, run the core.
      run(e,s,tm);

      postRun(e,s);

    } catch(std::bad_alloc&) {
      outOfMemory();
    } catch(quit) {
    } catch(handled_error) {
      em.statusError();
    }
    
    run::cleanup();
    
    em.clear();
  }

  virtual void process(bool purge=false) {
    if (!interactive && getSetting<bool>("parseonly"))
      doParse();
    else if (getSetting<bool>("listvariables"))
      doList();
    else
      doRun(purge);
  }
};

// Abstract base class for one-time processing of an abstract syntax tree.
class itree : public icore {
  string name;

  block *cachedTree;
public:
  itree(string name="<unnamed>")
    : name(name), cachedTree(0) {}

  // Build the tree, possibly throwing a handled_error if it cannot be built.
  virtual block *buildTree() = 0;

  virtual block *getTree() {
    if (cachedTree==0) {
      try {
        cachedTree=buildTree();
      } catch(handled_error) {
        em.statusError();
        return 0;
      }
    }
    return cachedTree;
  }

  virtual string getName() {
    return name;
  }

  void doParse() {
    block *tree=getTree();
    em.sync();
    if(tree && !em.errors())
      tree->prettyprint(cout, 0);
  }

  void doList() {
    block *tree=getTree();
    if (tree) {
      penv pe;
      record *r=tree->transAsFile(pe.ge(), symbol::trans(getName()));
      r->e.list(r);
    }
  }

  void run(coenv &e, istack &s, transMode tm=TRANS_NORMAL) {
    block *tree=getTree();
    if (tree) {
      for(mem::list<runnable *>::iterator r=tree->stms.begin();
          r != tree->stms.end(); ++r)
        if(!em.errors() || getSetting<bool>("debug"))
          runRunnable(*r,e,s,tm);
    }
  }

  void doRun(transMode tm=TRANS_NORMAL) {
    // Don't prepare an environment to run the code if there isn't any code.
    if (getTree())
      icore::doRun(false,tm);
  }
};

class icode : public itree {
  block *tree;

public:
  icode(block *tree, string name="<unnamed>")
    : itree(name), tree(tree) {}

  block *buildTree() {
    return tree;
  }
};

class istring : public itree {
  string str;

public:
  istring(const string& str, string name="<eval>")
    : itree(name), str(str) {}

  block *buildTree() {
    return parser::parseString(str, getName());
  }
};

class ifile : public itree {
  string filename;
  string outname;
  string outname_save;

public:
  ifile(const string& filename)
    : itree(filename),
      filename(filename),
      outname((string) (filename == "-" ? settings::outname() :
                        stripDir(stripExt(string(filename), suffix)))) {}
  
  block *buildTree() {
    return !filename.empty() ? parser::parseFile(filename,"Loading") : 0;
  }

  void preRun(coenv& e, istack& s) {
    outname_save=getSetting<string>("outname");
    if(stripDir(outname_save).empty())
      Setting("outname")=outname_save+outname;

    itree::preRun(e, s);
  }

  void postRun(coenv &e, istack& s) {
    itree::postRun(e, s);

    Setting("outname")=outname_save;
  }

  void process(bool purge=false) {
    try {
      init();
    } catch(handled_error) {
    }

    if (verbose >= 1)
      cout << "Processing " << outname << endl;
    
    try {
      icore::process(purge);
    }
    catch(handled_error) {
      em.statusError();
    }
  }
};

void printGreeting() {
  if(!getSetting<bool>("quiet"))
    cout << "Welcome to " << PROGRAM << " version " << VERSION << SVN_REVISION
         << " (to view the manual, type help)" << endl;
}


// Add a semi-colon terminator, if one is not there.
string terminateLine(const string line) {
  return (!line.empty() && *(line.rbegin())!=';') ? (line+";") : line;
}

// cleanLine changes a C++ style comment (//) into a C-style comment (/* */) so
// that comments don't absorb subsequent lines of code when multiline input is
// collapsed to a single line in the history.
//
// ex.  if (x==1) // test x
//        x=2;
// becomes
//      if (x==1) /* test x */ x=2    (all on one line)
//
// cleanLine is a mess because we have to check that the // is not in a string
// or c-style comment, which entails re-inventing much of the lexer.  The
// routine handles most cases, but multiline strings lose their newlines when
// recorded in the history.
typedef string::size_type size_type;
const size_type npos=string::npos;

inline size_type min(size_type a, size_type b) {
  return a < b ? a : b;
}

// If start is an offset somewhere within a string, this returns the first
// offset outside of the string. sym is the character used to start the string,
// ' or ".
size_type endOfString(const char sym, const string line, size_type start) {
  size_type endString=line.find(sym, start);
  if (endString == npos)
    return npos;

  size_type escapeInString=min(line.find(string("\\")+sym, start),
                               line.find("\\\\", start));
  if (endString < escapeInString)
    return endString+1;
  else
    return endOfString(sym, line, escapeInString+2);
}

// If start is an offset somewhere within a C-style comment, this returns the
// first offset outside of the comment.
size_type endOfComment(const string line, size_type start) {
  size_type endComment=line.find("*/", start);
  if (endComment == npos)
    return npos;
  else
    return endComment+2;
}

// Find the start of a string literal in the line.
size_type stringPos(const string line, size_type start) {
  if (start == npos)
    return npos;

  size_type pos=line.find_first_of("\'\"", start);
  if (pos == npos)
    return npos;

  // Skip over comments /*  */ and ignore anything after //
  size_type startComment=line.find("/*", start);
  size_type startLineComment=line.find("//", start);

  if (min(startComment,startLineComment) < pos)
    return stringPos(line,
                     startComment < startLineComment ?
                     endOfComment(line, startComment+2) :
                     npos);
  else
    // Nothing to skip over - the symbol actually starts a string.
    return pos;
}

// A multiline string should retain its newlines when collapsed to a single
// line.  This converts
//   'hello
//   there'
// to
//   'hello\nthere'
// and
//   "hello
//   there"
// to
//   "hello" '\n' "there"
// If the line doesn't end mid-string, this adds a space to the end to preserve
// whitespace, since it is the last function to touch the line.
string endString(const string line, size_type start) {
  assert(start!=npos);

  size_type pos=stringPos(line, start);

  if (pos==npos)
    // String ends in normal code.
    return line+" ";
  else {
    char sym=line[pos];
    size_type eos=endOfString(sym, line, pos+1);
    if (eos==npos) {
      // Line ends while in a string, attach a newline symbol.
      switch (line[pos]) {
        case '\'':
          return line+"\\n";
        case '\"':
          return line+"\" \'\\n\' \"";
        default:
          assert(False);
          return line;
      }
    }
    else {
      return endString(line, eos+1);
    }
  }
}

// Find the first // that isn't in a C-style comment or a string.
size_type slashPos(const string line, size_type start) {
  if (start == npos)
    return npos;

  size_type pos=line.find("//", start);
  if (pos == npos)
    return npos;

  // Skip over comments /*  */ and strings both "   " and '   '
  size_type startComment=line.find("/*", start);
  size_type startString=line.find_first_of("\'\"", start);

  if (min(startComment,startString) < pos)
    return slashPos(line,
                    startComment < startString ?
                    endOfComment(line, startComment+2) :
                    endOfString(line[startString], line, startString+1));
  else
    // Nothing to skip over - the // actually starts a comment.
    return pos;
}

string endCommentOrString(const string line) {
  size_type pos=slashPos(line, 0);
  if (pos == npos)
    return endString(line, 0);
  else {
    string sub=line;

    // Replace the first // by /*
    sub[pos+1]='*';

    // Replace any */ in the comment by *!
    while ((pos = line.find("*/", pos+2)) != npos)
      sub[pos+1]='!';

    // Tack on a */ at the end.
    sub.append(" */ ");
    return sub;
  }
}

bool isSlashed(const string line) {
  // NOTE: This doesn't fully handle escaped slashed in a string literal.
  return line[line.size()-1]=='\\';
}
string deslash(const string line) {
  return isSlashed(line) ? line.substr(0,line.size()-1) : line;
}

// This transforms a line in to the history, so that when more code is added
// after it, the code behaves the same as if there was a newline between the
// two lines.  This involves changing // style comments to /* */ style comments,
// and adding explicit newlines to multiline strings.
string cleanLine(const string line) {
  // First remove a trailing slash, if there is one.
  return endCommentOrString(deslash(line));
}

class iprompt : public icore {
  // Flag that is set to false to signal the prompt to exit.
  bool running;

  // Flag that is set to restart the main loop once it has exited.
  bool restart;

  // Code ran at start-up.
  string startline;

  // Used for handling quit abbreviation (q).
  protoenv *einteractive;
  
  void postRun(coenv &, istack &) {
  }
  
  // Commands are chopped into the starting word and the rest of the line.
  struct commandLine {
    string line;
    string word;
    string rest;
    
    commandLine(string line) : line(line) {
      string::iterator c=line.begin();

      // Skip leading whitespace
      while (c != line.end() && isspace(*c))
        ++c;

      // Only handle identifiers starting with a letter.
      if (c != line.end() && isalpha(*c)) {
        // Store the command name.
        while (c != line.end() && (isalnum(*c) || *c=='_')) {
          word.push_back(*c);
          ++c;
        }
      }

      // Copy the rest to rest.
      while (c != line.end()) {
        rest.push_back(*c);
        ++c;
      }

#if 0
      cerr << "line: " << line << endl;
      cerr << "word: " << word << endl;
      cerr << "rest: " << rest << endl;
      cerr << "simple: " << simple() << endl;
#endif
    }

    // Simple commands have at most spaces or semicolons after the command word.
    bool simple() {
      for (string::iterator c=rest.begin(); c != rest.end(); ++c)
        if (!isspace(*c) && *c != ';')
          return false;
      return true;
    }
  };


  // The interactive prompt has special functions that cannot be implemented as
  // normal functions.  These special funtions take a commandLine as an argument
  // and return true if they can handle the command.  If false is returned, the
  // line is treated as a normal line of code.
  // commands is a map of command names to methods which implement the commands.
  typedef bool (iprompt::*command)(commandLine);
  typedef mem::map<CONST string, command> commandMap;
  commandMap commands;

  bool exit(commandLine cl) {
    if (cl.simple()) {
      // Don't store exit commands in the history file.
      interact::deleteLastLine();
      running=false;
      return true;
    }
    else return false;
  }

  bool q(commandLine cl) {
    if(einteractive->ve.getType(symbol::trans("q"))) return false;
    return exit(cl);
  }

  bool reset(commandLine cl) {
    if (cl.simple()) {
      running=false;
      restart=true;
      startline="";
      run::purge();
      return true;
    }
    else return false;
  }

  bool help(commandLine cl) {
    if (cl.simple()) {
      popupHelp();
      return true;
    }
    else return false;
  }

  bool erase(commandLine cl) {
    running=false;
    restart=true;
    if (cl.simple())
      startline="erase()";
    else startline=cl.line;
    return true;
  }

  bool input(commandLine cl) {
    running=false;
    restart=true;
    startline="include "+cl.rest;
    return true;
  }

  void initCommands() {
#define ADDCOMMAND(name, func)                  \
    commands[#name]=&iprompt::func

    // keywords.pl looks for ADDCOMMAND to identify special commands in the
    // auto-completion.
    ADDCOMMAND(quit,exit);
    ADDCOMMAND(q,q);
    ADDCOMMAND(exit,exit);
    ADDCOMMAND(reset,reset);
    ADDCOMMAND(erase,erase);
    ADDCOMMAND(help,help);
    ADDCOMMAND(input,input);

#undef ADDCOMMAND
  }

  bool handleCommand(string line) {
    commandLine cl(line);
    if (cl.word != "") {
      commandMap::iterator p=commands.find(cl.word);
      if (p != commands.end()) {
        // Execute the command.
        command &com=p->second;
        return (this->*com)(cl);
      }
      else
        return false;
    }
    else
      return false;
  }

  void addToHistory(string line) {
    interact::addToHistory(line);
  }

  void addToLastLine(string line) {
    // Here we clean a line at the last possible point, when we know that more
    // code is going to be appended to it.
    string last=interact::getLastHistoryLine();
    interact::setLastHistoryLine(cleanLine(last)+line);
  }

  void terminateLastHistoryLine() {
    string last=interact::getLastHistoryLine();
    interact::setLastHistoryLine(terminateLine(last));
  }

  // Get input from the interactive prompt.  Such input may be over several
  // user-typed lines if he/she ends a line a with backslash to continue input
  // on the next line.  If continuation is true, the input started on a previous
  // line and is being continued (either because of a backslash or the parser
  // detecting it in multiline mode).
  string getline(bool continuation) {
    string prompt=getSetting<string>(continuation ? "prompt2" : "prompt");
    string line=interact::simpleline(prompt);

    if (continuation)
      addToLastLine(line);
    else
      addToHistory(line);

    // If the line ends in a slash, get more input.
    return isSlashed(line) ? line+"\n"+getline(true) :
      line;
  }

  // Continue taking input for a line until it properly parses, or a syntax
  // error occurs.  Returns the parsed code on success, and throws a
  // handled_error exception on failure.
  block *parseExtendableLine(string line) {
    block *code=parser::parseString(line, "-", true);
    if (code) {
      return code;
    } else {
      string nextline=getline(true);
      return parseExtendableLine(line+"\n"+nextline);
    }
  }

  void runLine(coenv &e, istack &s, string line) {
    try {
      if (getSetting<bool>("multiline")) {
        block *code=parseExtendableLine(line);
        
        icode i(code);
        i.run(e,s,TRANS_INTERACTIVE);
      }
      else {
        // Add a semi-colon to the end of the line if one is not there.  Do this
        // to the history as well, so the transcript can be run as regular asy
        // code.  This also makes the history work correctly if the multiline
        // setting is changed within an interactive session.
        // It is added to the history at the last possible moment to avoid
        // tampering with other features, such as using a slash to extend a
        // line.
        terminateLastHistoryLine();
        istring i(terminateLine(line), "-");
        i.run(e,s,TRANS_INTERACTIVE);
      }

      run::updateFunction(&s);
      uptodate=false;

    } catch(handled_error) {
      vm::indebugger=false;
    } catch(interrupted&) {
      // Turn off the interrupted flag.
      em.Interrupt(false);
      uptodate=true;
      cout << endl;
    } catch(quit&) {
    }

    // Ignore errors from this line when trying to run subsequent lines.
    em.clear();
  }

  void runStartCode(coenv &e, istack &s) {
    if (!startline.empty())
      runLine(e, s, startline);
  }

public:
  iprompt() : running(false), restart(false), startline("") {
    initCommands();
  }

  void doParse() {}

  void doList() {}

  void run(coenv &e, istack &s, transMode=TRANS_NORMAL) {
    running=true;
    interact::setCompleter(new trans::envCompleter(e.e));
    einteractive=&(e.e);

    runStartCode(e, s);

    while (running) {
      // Read a line from the prompt.
      string line=getline(false);

      // Check if it is a special command.
      if (handleCommand(line))
        continue;
      else
        runLine(e, s, line);
    }
  }

  void process() {
    printGreeting();
    interact::init_interactive();
    try {
      setPath("",true);
    } catch(handled_error) {
    }

    do {
      try {
        init(false);
        restart=false;
        icore::process();
      } catch(interrupted&) {
        em.Interrupt(false);
        restart=true;
      } catch(eof&) {
        restart=false;
      }
    } while(restart);
      
    interact::cleanup_interactive();
  }
};

void processCode(absyntax::block *code) {
  icode(code).process();
}
void processFile(const string& filename, bool purge) {
  ifile(filename).process(purge);
}
void processPrompt() {
  iprompt().process();
}

void runCode(absyntax::block *code) {
  icode(code).doRun();
}
void runString(const string& s, bool interactiveWrite) {
  istring(s).doRun(interactiveWrite ? TRANS_INTERACTIVE : TRANS_NORMAL);
}
void runFile(const string& filename) {
  ifile(filename).doRun();
}
void runPrompt() {
  iprompt().doRun();
}

void runCodeEmbedded(absyntax::block *code, trans::coenv &e, istack &s) {
  icode(code).run(e,s);
}
void runStringEmbedded(const string& str, trans::coenv &e, istack &s) {
  istring(str).run(e,s);
}
void runPromptEmbedded(trans::coenv &e, istack &s) {
  iprompt().run(e,s);
}

void doUnrestrictedList() {
  penv pe;
  env base_env(pe.ge());
  coder base_coder(nullPos, "doUnrestictedList");
  coenv e(base_coder,base_env);

  if (getSetting<bool>("autoplain"))
    absyntax::autoplainRunnable()->trans(e);

  e.e.list(0);
}