gazelle_deepTransform_withTrail - call a transforming function on all inner parts of input [1027176]

// transformer can return null or input on no change
// will not call transformer on individual words
// returns null if no change
static WithTrail<S> lambdaMapLike gazelle_deepTransform_withTrail(IF1<S, WithTrail<S>> transformer, S input, O... _) {
  if (transformer == null) null;
  
  // call transformer on whole input, return if change
  WithTrail<S> transformed = transformer.get(input);
  if (transformed != null) ret transformed;

  // transformer didn't do anything, tokenize & go through parts
  O tokenizer = optPar tokenizer(_, f javaTokWithBrackets);
  LS tok = callTokenizer(tokenizer, input);
  
  new L trails;
  bool changes;
  
  for ping (int i = 1; i < l(tok); i += 2) {
    S t = tok.get(i);
    if (tok_isRoundOrCurlyBracketed(t)) {
      S unBracketed = tok_deRoundOrCurlyBracket(t);
      transformed = gazelle_deepTransform_withTrail(transformer, unBracketed, _);
      if (transformed != null) {
        if (!changes) tok = cloneList(tok); // in case a caching tokenizer was used
        
        // enclose in brackets & replace
        tok.set(i, startsWith(t, "(") ? roundOpt(transformed!) : curlyOpt(transformed!));
        trails.add(transformed.trail);
        set changes;
      }
    }
  }
  
  ret changes ? WithTrail(litmap(op := "gazelle_deepTransform_withTrail", +input, +trails), join(tok)) : null;
}

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Snippet ID:	#1027176
Snippet name:	gazelle_deepTransform_withTrail - call a transforming function on all inner parts of input
Eternal ID of this version:	#1027176/4
Text MD5:	ecfd93d43d629a3270bf259f891457f5
Author:	stefan
Category:	javax / a.i.
Type:	JavaX fragment (include)
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2020-02-24 12:14:01
Source code size:	1373 bytes / 35 lines
Pitched / IR pitched:	No / No
Views / Downloads:	152 / 222
Version history:	3 change(s)
Referenced in:	[show references]

< > BotCompany Repo | #1027176 // gazelle_deepTransform_withTrail - call a transforming function on all inner parts of input

JavaX fragment (include) [tags: use-pretranspiled]

Author comment

1	// transformer can return null or input on no change
2	// will not call transformer on individual words
3	// returns null if no change
4	static WithTrail<S> lambdaMapLike gazelle_deepTransform_withTrail(IF1<S, WithTrail<S>> transformer, S input, O... _) {
5	if (transformer == null) null;
6
7	// call transformer on whole input, return if change
8	WithTrail<S> transformed = transformer.get(input);
9	if (transformed != null) ret transformed;
10
11	// transformer didn't do anything, tokenize & go through parts
12	O tokenizer = optPar tokenizer(_, f javaTokWithBrackets);
13	LS tok = callTokenizer(tokenizer, input);
14
15	new L trails;
16	bool changes;
17
18	for ping (int i = 1; i < l(tok); i += 2) {
19	S t = tok.get(i);
20	if (tok_isRoundOrCurlyBracketed(t)) {
21	S unBracketed = tok_deRoundOrCurlyBracket(t);
22	transformed = gazelle_deepTransform_withTrail(transformer, unBracketed, _);
23	if (transformed != null) {
24	if (!changes) tok = cloneList(tok); // in case a caching tokenizer was used
25
26	// enclose in brackets & replace
27	tok.set(i, startsWith(t, "(") ? roundOpt(transformed!) : curlyOpt(transformed!));
28	trails.add(transformed.trail);
29	set changes;
30	}
31	}
32	}
33
34	ret changes ? WithTrail(litmap(op := "gazelle_deepTransform_withTrail", +input, +trails), join(tok)) : null;
35	}