// CodeMirror, copyright © by Marijn Haverbeke and others // Distributed under an MIT license: codemirror.net/LICENSE

/**

* Author: Gautam Mehta
* Branched from CodeMirror's Scheme mode
*/

(function(mod) {

if (typeof exports == "object" && typeof module == "object") // CommonJS
  mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
  define(["../../lib/codemirror"], mod);
else // Plain browser env
  mod(CodeMirror);

})(function(CodeMirror) { “use strict”;

CodeMirror.defineMode(“cobol”, function () {

var BUILTIN = "builtin", COMMENT = "comment", STRING = "string",
    ATOM = "atom", NUMBER = "number", KEYWORD = "keyword", MODTAG = "header",
    COBOLLINENUM = "def", PERIOD = "link";
function makeKeywords(str) {
  var obj = {}, words = str.split(" ");
  for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
  return obj;
}
var atoms = makeKeywords("TRUE FALSE ZEROES ZEROS ZERO SPACES SPACE LOW-VALUE LOW-VALUES ");
var keywords = makeKeywords(
    "ACCEPT ACCESS ACQUIRE ADD ADDRESS " +
    "ADVANCING AFTER ALIAS ALL ALPHABET " +
    "ALPHABETIC ALPHABETIC-LOWER ALPHABETIC-UPPER ALPHANUMERIC ALPHANUMERIC-EDITED " +
    "ALSO ALTER ALTERNATE AND ANY " +
    "ARE AREA AREAS ARITHMETIC ASCENDING " +
    "ASSIGN AT ATTRIBUTE AUTHOR AUTO " +
    "AUTO-SKIP AUTOMATIC B-AND B-EXOR B-LESS " +
    "B-NOT B-OR BACKGROUND-COLOR BACKGROUND-COLOUR BEEP " +
    "BEFORE BELL BINARY BIT BITS " +
    "BLANK BLINK BLOCK BOOLEAN BOTTOM " +
    "BY CALL CANCEL CD CF " +
    "CH CHARACTER CHARACTERS CLASS CLOCK-UNITS " +
    "CLOSE COBOL CODE CODE-SET COL " +
    "COLLATING COLUMN COMMA COMMIT COMMITMENT " +
    "COMMON COMMUNICATION COMP COMP-0 COMP-1 " +
    "COMP-2 COMP-3 COMP-4 COMP-5 COMP-6 " +
    "COMP-7 COMP-8 COMP-9 COMPUTATIONAL COMPUTATIONAL-0 " +
    "COMPUTATIONAL-1 COMPUTATIONAL-2 COMPUTATIONAL-3 COMPUTATIONAL-4 COMPUTATIONAL-5 " +
    "COMPUTATIONAL-6 COMPUTATIONAL-7 COMPUTATIONAL-8 COMPUTATIONAL-9 COMPUTE " +
    "CONFIGURATION CONNECT CONSOLE CONTAINED CONTAINS " +
    "CONTENT CONTINUE CONTROL CONTROL-AREA CONTROLS " +
    "CONVERTING COPY CORR CORRESPONDING COUNT " +
    "CRT CRT-UNDER CURRENCY CURRENT CURSOR " +
    "DATA DATE DATE-COMPILED DATE-WRITTEN DAY " +
    "DAY-OF-WEEK DB DB-ACCESS-CONTROL-KEY DB-DATA-NAME DB-EXCEPTION " +
    "DB-FORMAT-NAME DB-RECORD-NAME DB-SET-NAME DB-STATUS DBCS " +
    "DBCS-EDITED DE DEBUG-CONTENTS DEBUG-ITEM DEBUG-LINE " +
    "DEBUG-NAME DEBUG-SUB-1 DEBUG-SUB-2 DEBUG-SUB-3 DEBUGGING " +
    "DECIMAL-POINT DECLARATIVES DEFAULT DELETE DELIMITED " +
    "DELIMITER DEPENDING DESCENDING DESCRIBED DESTINATION " +
    "DETAIL DISABLE DISCONNECT DISPLAY DISPLAY-1 " +
    "DISPLAY-2 DISPLAY-3 DISPLAY-4 DISPLAY-5 DISPLAY-6 " +
    "DISPLAY-7 DISPLAY-8 DISPLAY-9 DIVIDE DIVISION " +
    "DOWN DROP DUPLICATE DUPLICATES DYNAMIC " +
    "EBCDIC EGI EJECT ELSE EMI " +
    "EMPTY EMPTY-CHECK ENABLE END END. END-ACCEPT END-ACCEPT. " +
    "END-ADD END-CALL END-COMPUTE END-DELETE END-DISPLAY " +
    "END-DIVIDE END-EVALUATE END-IF END-INVOKE END-MULTIPLY " +
    "END-OF-PAGE END-PERFORM END-READ END-RECEIVE END-RETURN " +
    "END-REWRITE END-SEARCH END-START END-STRING END-SUBTRACT " +
    "END-UNSTRING END-WRITE END-XML ENTER ENTRY " +
    "ENVIRONMENT EOP EQUAL EQUALS ERASE " +
    "ERROR ESI EVALUATE EVERY EXCEEDS " +
    "EXCEPTION EXCLUSIVE EXIT EXTEND EXTERNAL " +
    "EXTERNALLY-DESCRIBED-KEY FD FETCH FILE FILE-CONTROL " +
    "FILE-STREAM FILES FILLER FINAL FIND " +
    "FINISH FIRST FOOTING FOR FOREGROUND-COLOR " +
    "FOREGROUND-COLOUR FORMAT FREE FROM FULL " +
    "FUNCTION GENERATE GET GIVING GLOBAL " +
    "GO GOBACK GREATER GROUP HEADING " +
    "HIGH-VALUE HIGH-VALUES HIGHLIGHT I-O I-O-CONTROL " +
    "ID IDENTIFICATION IF IN INDEX " +
    "INDEX-1 INDEX-2 INDEX-3 INDEX-4 INDEX-5 " +
    "INDEX-6 INDEX-7 INDEX-8 INDEX-9 INDEXED " +
    "INDIC INDICATE INDICATOR INDICATORS INITIAL " +
    "INITIALIZE INITIATE INPUT INPUT-OUTPUT INSPECT " +
    "INSTALLATION INTO INVALID INVOKE IS " +
    "JUST JUSTIFIED KANJI KEEP KEY " +
    "LABEL LAST LD LEADING LEFT " +
    "LEFT-JUSTIFY LENGTH LENGTH-CHECK LESS LIBRARY " +
    "LIKE LIMIT LIMITS LINAGE LINAGE-COUNTER " +
    "LINE LINE-COUNTER LINES LINKAGE LOCAL-STORAGE " +
    "LOCALE LOCALLY LOCK " +
    "MEMBER MEMORY MERGE MESSAGE METACLASS " +
    "MODE MODIFIED MODIFY MODULES MOVE " +
    "MULTIPLE MULTIPLY NATIONAL NATIVE NEGATIVE " +
    "NEXT NO NO-ECHO NONE NOT " +
    "NULL NULL-KEY-MAP NULL-MAP NULLS NUMBER " +
    "NUMERIC NUMERIC-EDITED OBJECT OBJECT-COMPUTER OCCURS " +
    "OF OFF OMITTED ON ONLY " +
    "OPEN OPTIONAL OR ORDER ORGANIZATION " +
    "OTHER OUTPUT OVERFLOW OWNER PACKED-DECIMAL " +
    "PADDING PAGE PAGE-COUNTER PARSE PERFORM " +
    "PF PH PIC PICTURE PLUS " +
    "POINTER POSITION POSITIVE PREFIX PRESENT " +
    "PRINTING PRIOR PROCEDURE PROCEDURE-POINTER PROCEDURES " +
    "PROCEED PROCESS PROCESSING PROGRAM PROGRAM-ID " +
    "PROMPT PROTECTED PURGE QUEUE QUOTE " +
    "QUOTES RANDOM RD READ READY " +
    "REALM RECEIVE RECONNECT RECORD RECORD-NAME " +
    "RECORDS RECURSIVE REDEFINES REEL REFERENCE " +
    "REFERENCE-MONITOR REFERENCES RELATION RELATIVE RELEASE " +
    "REMAINDER REMOVAL RENAMES REPEATED REPLACE " +
    "REPLACING REPORT REPORTING REPORTS REPOSITORY " +
    "REQUIRED RERUN RESERVE RESET RETAINING " +
    "RETRIEVAL RETURN RETURN-CODE RETURNING REVERSE-VIDEO " +
    "REVERSED REWIND REWRITE RF RH " +
    "RIGHT RIGHT-JUSTIFY ROLLBACK ROLLING ROUNDED " +
    "RUN SAME SCREEN SD SEARCH " +
    "SECTION SECURE SECURITY SEGMENT SEGMENT-LIMIT " +
    "SELECT SEND SENTENCE SEPARATE SEQUENCE " +
    "SEQUENTIAL SET SHARED SIGN SIZE " +
    "SKIP1 SKIP2 SKIP3 SORT SORT-MERGE " +
    "SORT-RETURN SOURCE SOURCE-COMPUTER SPACE-FILL " +
    "SPECIAL-NAMES STANDARD STANDARD-1 STANDARD-2 " +
    "START STARTING STATUS STOP STORE " +
    "STRING SUB-QUEUE-1 SUB-QUEUE-2 SUB-QUEUE-3 SUB-SCHEMA " +
    "SUBFILE SUBSTITUTE SUBTRACT SUM SUPPRESS " +
    "SYMBOLIC SYNC SYNCHRONIZED SYSIN SYSOUT " +
    "TABLE TALLYING TAPE TENANT TERMINAL " +
    "TERMINATE TEST TEXT THAN THEN " +
    "THROUGH THRU TIME TIMES TITLE " +
    "TO TOP TRAILING TRAILING-SIGN TRANSACTION " +
    "TYPE TYPEDEF UNDERLINE UNEQUAL UNIT " +
    "UNSTRING UNTIL UP UPDATE UPON " +
    "USAGE USAGE-MODE USE USING VALID " +
    "VALIDATE VALUE VALUES VARYING VLR " +
    "WAIT WHEN WHEN-COMPILED WITH WITHIN " +
    "WORDS WORKING-STORAGE WRITE XML XML-CODE " +
    "XML-EVENT XML-NTEXT XML-TEXT ZERO ZERO-FILL " );

var builtins = makeKeywords("- * ** / + < <= = > >= ");
var tests = {
  digit: /\d/,
  digit_or_colon: /[\d:]/,
  hex: /[0-9a-f]/i,
  sign: /[+-]/,
  exponent: /e/i,
  keyword_char: /[^\s\(\[\;\)\]]/,
  symbol: /[\w*+\-]/
};
function isNumber(ch, stream){
  // hex
  if ( ch === '0' && stream.eat(/x/i) ) {
    stream.eatWhile(tests.hex);
    return true;
  }
  // leading sign
  if ( ( ch == '+' || ch == '-' ) && ( tests.digit.test(stream.peek()) ) ) {
    stream.eat(tests.sign);
    ch = stream.next();
  }
  if ( tests.digit.test(ch) ) {
    stream.eat(ch);
    stream.eatWhile(tests.digit);
    if ( '.' == stream.peek()) {
      stream.eat('.');
      stream.eatWhile(tests.digit);
    }
    if ( stream.eat(tests.exponent) ) {
      stream.eat(tests.sign);
      stream.eatWhile(tests.digit);
    }
    return true;
  }
  return false;
}
return {
  startState: function () {
    return {
      indentStack: null,
      indentation: 0,
      mode: false
    };
  },
  token: function (stream, state) {
    if (state.indentStack == null && stream.sol()) {
      // update indentation, but only if indentStack is empty
      state.indentation = 6 ; //stream.indentation();
    }
    // skip spaces
    if (stream.eatSpace()) {
      return null;
    }
    var returnType = null;
    switch(state.mode){
    case "string": // multi-line string parsing mode
      var next = false;
      while ((next = stream.next()) != null) {
        if (next == "\"" || next == "\'") {
          state.mode = false;
          break;
        }
      }
      returnType = STRING; // continue on in string mode
      break;
    default: // default parsing mode
      var ch = stream.next();
      var col = stream.column();
      if (col >= 0 && col <= 5) {
        returnType = COBOLLINENUM;
      } else if (col >= 72 && col <= 79) {
        stream.skipToEnd();
        returnType = MODTAG;
      } else if (ch == "*" && col == 6) { // comment
        stream.skipToEnd(); // rest of the line is a comment
        returnType = COMMENT;
      } else if (ch == "\"" || ch == "\'") {
        state.mode = "string";
        returnType = STRING;
      } else if (ch == "'" && !( tests.digit_or_colon.test(stream.peek()) )) {
        returnType = ATOM;
      } else if (ch == ".") {
        returnType = PERIOD;
      } else if (isNumber(ch,stream)){
        returnType = NUMBER;
      } else {
        if (stream.current().match(tests.symbol)) {
          while (col < 71) {
            if (stream.eat(tests.symbol) === undefined) {
              break;
            } else {
              col++;
            }
          }
        }
        if (keywords && keywords.propertyIsEnumerable(stream.current().toUpperCase())) {
          returnType = KEYWORD;
        } else if (builtins && builtins.propertyIsEnumerable(stream.current().toUpperCase())) {
          returnType = BUILTIN;
        } else if (atoms && atoms.propertyIsEnumerable(stream.current().toUpperCase())) {
          returnType = ATOM;
        } else returnType = null;
      }
    }
    return returnType;
  },
  indent: function (state) {
    if (state.indentStack == null) return state.indentation;
    return state.indentStack.indent;
  }
};

});

CodeMirror.defineMIME(“text/x-cobol”, “cobol”);

});