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< > BotCompany Repo | #1037256 // pineTok function - PineScript tokenizer (untested)

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

Libraryless. Click here for Pure Java version (185L/2K).

static LS pineTok(S s) {
  new ArrayList<S> tok;
  int l = s == null ? 0 : s.length();
  
  int i = 0;
  while (i < l) {
    int j = i;
    char c, d;
    
        // scan for whitespace
        while (j < l) {
          c = s.charAt(j);
          d = j+1 >= l ? '\0' : s.charAt(j+1);
          if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
            ++j;
          else if (c == '/' && d == '*') {
            do ++j; while (j < l && !regionMatches(s, j, "*/"));
            j = Math.min(j+2, l);
          } else if (c == '/' && d == '/') {
            do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
          } else
            break;
        }
        
        tok.add(javaTok_substringN(s, i, j));
        i = j;
        if (i >= l) break;
        c = s.charAt(i);
        d = i+1 >= l ? '\0' : s.charAt(i+1);
    
        // scan for non-whitespace
        
        if (c == '\'' || c == '"') {
          char opener = c;
          ++j;
          while (j < l) {
            int c2 = s.charAt(j);
            if (c2 == opener || c2 == '\n' && opener == '\'') { // allow multi-line strings, but not for '
              ++j;
              break;
            } else if (c2 == '\\' && j+1 < l)
              j += 2;
            else
              ++j;
          }
        } else if (Character.isJavaIdentifierStart(c))
          do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\'')); // for stuff like "don't"
        else if (Character.isDigit(c)) {
          do ++j; while (j < l && Character.isDigit(s.charAt(j)));
          if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L
        } else
          ++j;
      
    tok.add(s.substring(i, j));
    i = j;
  }
  
  if ((tok.size() % 2) == 0) tok.add("");
  ret tok;
}

Author comment

Began life as a copy of #1000688

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Travelled to 2 computer(s): mqqgnosmbjvj, wnsclhtenguj

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Snippet ID: #1037256
Snippet name: pineTok function - PineScript tokenizer (untested)
Eternal ID of this version: #1037256/5
Text MD5: 776c72196c6d0fdfd7f6a224d3b2e2c0
Transpilation MD5: d929a639c987a21d4ef429c71d6cc54a
Author: stefan
Category:
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2023-10-15 17:44:11
Source code size: 1854 bytes / 60 lines
Pitched / IR pitched: No / No
Views / Downloads: 98 / 150
Version history: 4 change(s)
Referenced in: [show references]