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+" Vim ABAP syntax file
+" Language: SAP - ABAP/R4
+" Maintainer: Marius Piedallu van Wyk <lailoken@gmail.com>
+" Last Change: 2021 Jan 02
+" Comment: Thanks to EPI-USE Labs for all your assistance. :)
+
+" Quit when a syntax file was already loaded
+if exists("b:current_syntax")
+ finish
+endif
+
+" Always ignore case
+syn case ignore
+
+" Symbol Operators (space delimited)
+syn match abapSymbolOperator "\W+\W"
+syn match abapSymbolOperator "\W-\W"
+syn match abapSymbolOperator "\W/\W"
+syn match abapSymbolOperator "\W%\W"
+syn match abapSymbolOperator "\W=\W"
+syn match abapSymbolOperator "\W<\W"
+syn match abapSymbolOperator "\W>\W"
+syn match abapSymbolOperator "\W\*\W"
+syn match abapSymbolOperator "\W[<>]=\W"
+syn match abapSymbolOperator "\W<>\W"
+syn match abapSymbolOperator "\W\*\*\W"
+syn match abapSymbolOperator "\[\]"
+syn match abapSymbolOperator "->\*\?"
+syn match abapSymbolOperator "=>"
+syn match abapSymbolOperator "[()~:,\.&$]"
+
+" Literals
+syn region abapCharString matchgroup=abapCharString start="'" end="'" contains=abapCharStringEscape
+syn match abapCharStringEscape contained "''"
+
+syn region abapString matchgroup=abapString start="`" end="`" contains=abapStringEscape
+syn match abapStringEscape contained "``"
+
+syn match abapNumber "\-\=\<\d\+\>"
+syn region abapHex matchgroup=abapHex start="X'" end="'"
+
+setlocal iskeyword=48-57,_,A-Z,a-z,/
+
+syn match abapNamespace "\</\w\+/"
+
+" multi-word statements
+syn match abapComplexStatement "\<\(WITH\W\+\(HEADER\W\+LINE\|FRAME\|KEY\)\|WITH\)\>"
+syn match abapComplexStatement "\<NO\W\+STANDARD\W\+PAGE\W\+HEADING\>"
+syn match abapComplexStatement "\<\(EXIT\W\+FROM\W\+STEP\W\+LOOP\|EXIT\)\>"
+syn match abapComplexStatement "\<\(BEGIN\W\+OF\W\+\(BLOCK\|LINE\)\|BEGIN\W\+OF\)\>"
+syn match abapComplexStatement "\<\(END\W\+OF\W\+\(BLOCK\|LINE\)\|END\W\+OF\)\>"
+syn match abapComplexStatement "\<NO\W\+INTERVALS\>"
+syn match abapComplexStatement "\<RESPECTING\W\+BLANKS\>"
+syn match abapComplexStatement "\<SEPARATED\W\+BY\>"
+syn match abapComplexStatement "\<USING\(\W\+EDIT\W\+MASK\)\?\>"
+syn match abapComplexStatement "\<WHERE\(\W\+LINE\)\?\>"
+syn match abapComplexStatement "\<GET\W\+\(TIME\(\W\+STAMP\)\?\(\W\+FIELD\)\?\|PF-STATUS\|BADI\|BIT\|CONNECTION\|CURSOR\|REFERENCE\W\+OF\)\>"
+syn match abapComplexStatement "\<RADIOBUTTON\W\+GROUP\>"
+syn match abapComplexStatement "\<REF\W\+TO\>"
+syn match abapComplexStatement "\<\(PUBLIC\|PRIVATE\|PROTECTED\)\(\W\+SECTION\)\?\>"
+syn match abapComplexStatement "\<DELETING\W\+\(TRAILING\|LEADING\)\>"
+syn match abapComplexStatement "\<\(ALL\W\+OCCURRENCES\)\|\(\(FIRST\|LAST\)\W\+OCCURRENCE\)\>"
+syn match abapComplexStatement "\<INHERITING\W\+FROM\>"
+syn match abapComplexStatement "\<\(UP\W\+\)\?TO\>"
+
+" hyphenated-word statements
+syn match abapComplexStatement "\<LINE-COUNT\>"
+syn match abapComplexStatement "\<ADD-CORRESPONDING\>"
+syn match abapComplexStatement "\<AUTHORITY-CHECK\>"
+syn match abapComplexStatement "\<BREAK-POINT\>"
+syn match abapComplexStatement "\<CLASS-DATA\>"
+syn match abapComplexStatement "\<CLASS-METHODS\>"
+syn match abapComplexStatement "\<CLASS-METHOD\>"
+syn match abapComplexStatement "\<DIVIDE-CORRESPONDING\>"
+syn match abapComplexStatement "\<EDITOR-CALL\>"
+syn match abapComplexStatement "\<END-OF-DEFINITION\>"
+syn match abapComplexStatement "\<END-OF-PAGE\>"
+syn match abapComplexStatement "\<END-OF-SELECTION\>"
+syn match abapComplexStatement "\<FIELD-GROUPS\>"
+syn match abapComplexStatement "\<FIELD-SYMBOLS\>"
+syn match abapComplexStatement "\<FUNCTION-POOL\>"
+syn match abapComplexStatement "\<IS\W\+\(NOT\W\+\)\?\(ASSIGNED\|BOUND\|INITIAL\|SUPPLIED\)\>"
+syn match abapComplexStatement "\<MOVE-CORRESPONDING\>"
+syn match abapComplexStatement "\<MULTIPLY-CORRESPONDING\>"
+syn match abapComplexStatement "\<NEW-LINE\>"
+syn match abapComplexStatement "\<NEW-PAGE\>"
+syn match abapComplexStatement "\<NEW-SECTION\>"
+syn match abapComplexStatement "\<PRINT-CONTROL\>"
+syn match abapComplexStatement "\<RP-PROVIDE-FROM-LAST\>"
+syn match abapComplexStatement "\<SELECT-OPTIONS\>"
+syn match abapComplexStatement "\<SELECTION-SCREEN\>"
+syn match abapComplexStatement "\<START-OF-SELECTION\>"
+syn match abapComplexStatement "\<SUBTRACT-CORRESPONDING\>"
+syn match abapComplexStatement "\<SYNTAX-CHECK\>"
+syn match abapComplexStatement "\<SYNTAX-TRACE\>"
+syn match abapComplexStatement "\<TOP-OF-PAGE\>"
+syn match abapComplexStatement "\<TYPE-POOL\>"
+syn match abapComplexStatement "\<TYPE-POOLS\>"
+syn match abapComplexStatement "\<LINE-SIZE\>"
+syn match abapComplexStatement "\<LINE-COUNT\>"
+syn match abapComplexStatement "\<MESSAGE-ID\>"
+syn match abapComplexStatement "\<DISPLAY-MODE\>"
+syn match abapComplexStatement "\<READ\(-ONLY\)\?\>"
+
+" ABAP statements
+syn keyword abapStatement ADD ALIAS ALIASES ASSERT ASSIGN ASSIGNING AT
+syn keyword abapStatement BACK
+syn keyword abapStatement CALL CASE CATCH CHECK CLASS CLEAR CLOSE CNT COLLECT COMMIT COMMUNICATION COMPUTE CONCATENATE CONDENSE CONSTANTS CONTINUE CONTROLS CONVERT CREATE CURRENCY
+syn keyword abapStatement DATA DEFINE DEFINITION DEFERRED DELETE DESCRIBE DETAIL DIVIDE DO
+syn keyword abapStatement 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
+syn keyword abapStatement FETCH FIELDS FORM FORMAT FREE FROM FUNCTION
+syn keyword abapStatement GENERATE
+syn keyword abapStatement HIDE
+syn keyword abapStatement IF IMPORT IMPORTING INDEX INFOTYPES INITIALIZATION INTERFACE INTERFACES INPUT INSERT IMPLEMENTATION
+syn keyword abapStatement LEAVE LIKE LINE LOAD LOCAL LOOP
+syn keyword abapStatement MESSAGE METHOD METHODS MODIFY MODULE MOVE MULTIPLY
+syn keyword abapStatement ON OVERLAY OPTIONAL OTHERS
+syn keyword abapStatement PACK PARAMETERS PERFORM POSITION PROGRAM PROVIDE PUT
+syn keyword abapStatement RAISE RANGES RECEIVE RECEIVING REDEFINITION REFERENCE REFRESH REJECT REPLACE REPORT RESERVE RESTORE RETURNING ROLLBACK
+syn keyword abapStatement SCAN SCROLL SEARCH SELECT SET SHIFT SKIP SORT SORTED SPLIT STANDARD STATICS STEP STOP SUBMIT SUBTRACT SUM SUMMARY SUPPRESS
+syn keyword abapStatement TABLES TIMES TRANSFER TRANSLATE TRY TYPE TYPES
+syn keyword abapStatement UNASSIGN ULINE UNPACK UPDATE
+syn keyword abapStatement WHEN WHILE WINDOW WRITE
+
+" More statemets
+syn keyword abapStatement LINES
+syn keyword abapStatement INTO GROUP BY HAVING ORDER BY SINGLE
+syn keyword abapStatement APPENDING CORRESPONDING FIELDS OF TABLE
+syn keyword abapStatement LEFT RIGHT OUTER INNER JOIN AS CLIENT SPECIFIED BYPASSING BUFFER ROWS CONNECTING
+syn keyword abapStatement OCCURS STRUCTURE OBJECT PROPERTY
+syn keyword abapStatement CASTING APPEND RAISING VALUE COLOR
+syn keyword abapStatement CHANGING EXCEPTION EXCEPTIONS DEFAULT CHECKBOX COMMENT
+syn keyword abapStatement ID NUMBER FOR TITLE OUTPUT
+
+" Special ABAP specific tables:
+syn match abapSpecialTables "\<\(sy\|\(hrp\|p\|pa\)\d\d\d\d\|t\d\d\d.\|innnn\)-"me=e-1 contained
+syn match abapStructure "\<\w\+-[^\>]"me=e-2 contains=abapSpecialTables,abapStatement,abapComplexStatement
+syn match abapField "-\w\+"ms=s+1
+
+" Pointer
+syn match abapSpecial "<\w\+>"
+
+" Abap common constants:
+syn keyword abapSpecial TRUE FALSE NULL SPACE
+
+" Includes
+syn region abapInclude start="include" end="." contains=abapComment
+
+" Types
+syn keyword abapTypes c n i int8 p f d t x string xstring decfloat16 decfloat34
+
+" Atritmitic operators
+syn keyword abapOperator abs sign ceil floor trunc frac acos asin atan cos sin tan
+syn keyword abapOperator cosh sinh tanh exp log log10 sqrt
+
+" String operators
+syn keyword abapStatement strlen xstrlen charlen numofchar dbmaxlen
+
+syn keyword abapOperator EQ NE LT LE GT GE NOT AND OR XOR IN LIKE BETWEEN
+
+" An error? Not strictly... but cannot think of reason this is intended.
+syn match abapError "\.\."
+
+" Comments
+syn region abapComment start="^\*" end="$" contains=abapTodo
+syn match abapComment "\".*" contains=abapTodo
+syn keyword abapTodo contained TODO NOTE
+syn match abapTodo "\#EC\W\+\w\+"
+
+" Define the default highlighting.
+" Only when an item doesn't have highlighting yet
+
+hi def link abapError Error
+hi def link abapComment Comment
+hi def link abapInclude Include
+hi def link abapStatement Statement
+hi def link abapComplexStatement Statement
+hi def link abapSpecial Special
+hi def link abapNamespace Special
+hi def link abapSpecialTables Special
+hi def link abapSymbolOperator abapOperator
+hi def link abapOperator Operator
+hi def link abapCharString String
+hi def link abapString String
+hi def link abapFloat Float
+hi def link abapTypes Type
+hi def link abapSymbol Structure
+hi def link abapStructure Structure
+hi def link abapField Variable
+hi def link abapNumber Number
+hi def link abapHex Number
+
+
+let b:current_syntax = "abap"
+
+" vim: ts=8 sw=2