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/*
 * based on
 * " Vim ABAP syntax file
 * "    Language: SAP - ABAP/R4
 * "    Revision: 2.1
 * "  Maintainer: Marius Piedallu van Wyk <lailoken@gmail.com>
 * " Last Change: 2012 Oct 23
 */

define(function (require, exports, module) {
    "use strict";

    var oop = require("../lib/oop");
    var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;

    var AbapHighlightRules = function () {

        var keywordMapper = this.createKeywordMapper({
            "variable.language": "this",
            "keyword": "ADD ALIAS ALIASES ASCENDING ASSERT ASSIGN ASSIGNING AT BACK" +
            " CALL CASE CATCH CHECK CLASS CLEAR CLOSE CNT COLLECT COMMIT COMMUNICATION COMPUTE CONCATENATE CONDENSE CONSTANTS CONTINUE CONTROLS CONVERT CREATE CURRENCY" +
            " DATA DEFINE DEFINITION DEFERRED DELETE DESCENDING DESCRIBE DETAIL DIVIDE DO" +
            " ELSE ELSEIF ENDAT ENDCASE ENDCLASS ENDDO ENDEXEC ENDFORM ENDFUNCTION ENDIF ENDIFEND ENDINTERFACE ENDLOOP ENDMETHOD ENDMODULE ENDON ENDPROVIDE ENDSELECT ENDTRY ENDWHILE EVENT EVENTS EXEC EXIT EXPORT EXPORTING EXTRACT" +
            " FETCH FIELDS FORM FORMAT FREE FROM FUNCTION" +
            " GENERATE GET" +
            " HIDE" +
            " IF IMPORT IMPORTING INDEX INFOTYPES INITIALIZATION INTERFACE INTERFACES INPUT INSERT IMPLEMENTATION" +
            " LEAVE LIKE LINE LOAD LOCAL LOOP" +
            " MESSAGE METHOD METHODS MODIFY MODULE MOVE MULTIPLY" +
            " ON OVERLAY OPTIONAL OTHERS" +
            " PACK PARAMETERS PERFORM POSITION PROGRAM PROVIDE PUT" +
            " RAISE RANGES READ RECEIVE RECEIVING REDEFINITION REFERENCE REFRESH REJECT REPLACE REPORT RESERVE RESTORE RETURN RETURNING ROLLBACK" +
            " SCAN SCROLL SEARCH SELECT SET SHIFT SKIP SORT SORTED SPLIT STANDARD STATICS STEP STOP SUBMIT SUBTRACT SUM SUMMARY SUPPRESS" +
            " TABLES TIMES TRANSFER TRANSLATE TRY TYPE TYPES" +
            " UNASSIGN ULINE UNPACK UPDATE" +
            " WHEN WHILE WINDOW WRITE" +
            " OCCURS STRUCTURE OBJECT PROPERTY" +
            " CASTING APPEND RAISING VALUE COLOR" +
            " CHANGING EXCEPTION EXCEPTIONS DEFAULT CHECKBOX COMMENT" +
            " ID NUMBER FOR TITLE OUTPUT" +
            " WITH EXIT USING" +
            " INTO WHERE GROUP BY HAVING ORDER BY SINGLE" +
            " APPENDING CORRESPONDING FIELDS OF TABLE" +
            " LEFT RIGHT OUTER INNER JOIN AS CLIENT SPECIFIED BYPASSING BUFFER UP TO ROWS CONNECTING" +
            " EQ NE LT LE GT GE NOT AND OR XOR IN LIKE BETWEEN",
            "constant.language": "TRUE FALSE NULL SPACE",
            "support.type": "c n i p f d t x string xstring decfloat16 decfloat34",
            "keyword.operator": "abs sign ceil floor trunc frac acos asin atan cos sin tan" +
            " abapOperator cosh sinh tanh exp log log10 sqrt" +
            " strlen xstrlen charlen numofchar dbmaxlen lines"
        }, "text", true, " ");

        var compoundKeywords = "WITH\\W+(?:HEADER\\W+LINE|FRAME|KEY)|NO\\W+STANDARD\\W+PAGE\\W+HEADING|" +
            "EXIT\\W+FROM\\W+STEP\\W+LOOP|BEGIN\\W+OF\\W+(?:BLOCK|LINE)|BEGIN\\W+OF|" +
            "END\\W+OF\\W+(?:BLOCK|LINE)|END\\W+OF|NO\\W+INTERVALS|" +
            "RESPECTING\\W+BLANKS|SEPARATED\\W+BY|USING\\W+(?:EDIT\\W+MASK)|" +
            "WHERE\\W+(?:LINE)|RADIOBUTTON\\W+GROUP|REF\\W+TO|" +
            "(?:PUBLIC|PRIVATE|PROTECTED)(?:\\W+SECTION)?|DELETING\\W+(?:TRAILING|LEADING)" +
            "(?:ALL\\W+OCCURRENCES)|(?:FIRST|LAST)\\W+OCCURRENCE|INHERITING\\W+FROM|" +
            "LINE-COUNT|ADD-CORRESPONDING|AUTHORITY-CHECK|BREAK-POINT|CLASS-DATA|CLASS-METHODS|" +
            "CLASS-METHOD|DIVIDE-CORRESPONDING|EDITOR-CALL|END-OF-DEFINITION|END-OF-PAGE|END-OF-SELECTION|" +
            "FIELD-GROUPS|FIELD-SYMBOLS|FUNCTION-POOL|MOVE-CORRESPONDING|MULTIPLY-CORRESPONDING|NEW-LINE|" +
            "NEW-PAGE|NEW-SECTION|PRINT-CONTROL|RP-PROVIDE-FROM-LAST|SELECT-OPTIONS|SELECTION-SCREEN|" +
            "START-OF-SELECTION|SUBTRACT-CORRESPONDING|SYNTAX-CHECK|SYNTAX-TRACE|TOP-OF-PAGE|TYPE-POOL|" +
            "TYPE-POOLS|LINE-SIZE|LINE-COUNT|MESSAGE-ID|DISPLAY-MODE|READ(?:-ONLY)?|" +
            "IS\\W+(?:NOT\\W+)?(?:ASSIGNED|BOUND|INITIAL|SUPPLIED)";

        this.$rules = {
            "start": [
                {token: "string", regex: "`", next: "string"},
                {token: "string", regex: "'", next: "qstring"},
                {token: "doc.comment", regex: /^\*.+/},
                {token: "comment", regex: /".+$/},
                {token: "invalid", regex: "\\.{2,}"},
                {token: "keyword.operator", regex: /\W[\-+%=<>*]\W|\*\*|[~:,\.&$]|->*?|=>/},
                {token: "paren.lparen", regex: "[\\[({]"},
                {token: "paren.rparen", regex: "[\\])}]"},
                {token: "constant.numeric", regex: "[+-]?\\d+\\b"},
                {token: "variable.parameter", regex: /sy|pa?\d\d\d\d\|t\d\d\d\.|innnn/},
                {token: "keyword", regex: compoundKeywords},
                {token: "variable.parameter", regex: /\w+-\w+(?:-\w+)*/},
                {token: keywordMapper, regex: "\\b\\w+\\b"},
                {caseInsensitive: true}
            ],
            "qstring": [
                {token: "constant.language.escape", regex: "''"},
                {token: "string", regex: "'", next: "start"},
                {defaultToken: "string"}
            ],
            "string": [
                {token: "constant.language.escape", regex: "``"},
                {token: "string", regex: "`", next: "start"},
                {defaultToken: "string"}
            ]
        };
    };
    oop.inherits(AbapHighlightRules, TextHighlightRules);

    exports.AbapHighlightRules = AbapHighlightRules;
});
