# -*- coding: utf-8 -*- # # frozen_string_literal: true module Rouge module Lexers class COBOL < RegexLexer title 'COBOL' desc 'COBOL (Common Business-Oriented Language) programming language' tag 'cobol' filenames '*.cob', '*.cbl', '*.cpy', '*.cpb' mimetypes 'text/x-cobol' identifier = /\p{Alpha}[\p{Alnum}-]*/ def self.divisions @divisions ||= %w( IDENTIFICATION ENVIRONMENT DATA PROCEDURE DIVISION ) end def self.sections @sections ||= %w( CONFIGURATION INPUT-OUTPUT FILE WORKING-STORAGE LOCAL-STORAGE LINKAGE SECTION ) end # List of COBOL keywords # sourced from https://www.ibm.com/docs/en/cobol-zos/6.4?topic=appendixes-reserved-words def self.keywords @keywords ||= Set.new(%w( ACCEPT ACCESS ACTIVE-CLASS ADD ADDRESS ADVANCING AFTER ALIGNED ALL ALLOCATE ALPHABET ALPHABETIC ALPHABETIC-LOWER ALPHABETIC-UPPER ALPHANUMERIC ALPHANUMERIC-EDITED ALSO ALTER ALTERNATE AND ANYCASE ANY APPLY ARE AREA AREAS ASCENDING ASSIGN AT AUTHOR B-AND B-NOT B-OR B-XOR BASED BASIS BEFORE BEGINNING BINARY BINARY-CHAR BINARY-DOUBLE BINARY-LONG BINARY-SHORT BIT BLANK BLOCK BOOLEAN BOTTOM BY BYTE-LENGTH CALL CANCEL CBL CD CF CH CHARACTER CHARACTERS CLASS CLASS-ID CLOCK-UNITS CLOSE COBOL CODE CODE-SET COL COLLATING COLS COLUMN COLUMNS COM-REG COMMA COMMON COMMUNICATION COMP-1 COMP-2 COMP-3 COMP-4 COMP-5 COMP COMPUTATIONAL-1 COMPUTATIONAL-2 COMPUTATIONAL-3 COMPUTATIONAL-4 COMPUTATIONAL-5 COMPUTATIONAL COMPUTE CONDITION CONSTANT CONTAINS CONTENT CONTINUE CONTROL CONTROLS CONVERTING COPY CORR CORRESPONDING COUNT CRT CURRENCY CURSOR DATA-POINTER DATE DATE-COMPILED DATE-WRITTEN DAY DAY-OF-WEEK DBCS 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 DESTINATION DETAIL DISABLE DISPLAY-1 DISPLAY DIVIDE DOWN DUPLICATES DYNAMIC EC EGCS EGI EJECT ELSE EMI ENABLE END-ACCEPT END-ADD END-CALL END-COMPUTE END-DELETE END-DISPLAY END-DIVIDE END-EVALUATE END-EXEC END-IF END-INVOKE END-JSON 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 ENDING END ENTER ENTRY EO EOP EQUAL ERROR ESI EVALUATE EVERY EXCEPTION EXCEPTION-OBJECT EXEC EXECUTE EXIT EXTEND EXTERNAL FACTORY FALSE FD FILE-CONTROL FILLER FINAL FIRST FLOAT-EXTENDED FLOAT-LONG FLOAT-SHORT FOOTING FOR FORMAT FREE FROM FUNCTION FUNCTION-ID FUNCTION-POINTER GENERATE GET GIVING GLOBAL GO GOBACK GREATER GROUP GROUP-USAGE HEADING HIGH-VALUE HIGH-VALUES I-O-CONTROL I-O ID IF IN INDEX INDEXED INDICATE INHERITS INITIAL INITIALIZE INITIATE INPUT INSERT INSPECT INSTALLATION INTERFACE INTERFACE-ID INTO INVALID INVOKE IS JAVA JNIENVPTR JSON JSON-CODE JSON-STATUS JUST JUSTIFIED KANJI KEY LABEL LAST LEADING LEFT LENGTH LESS LIMIT LIMITS LINAGE-COUNTER LINAGE LINE-COUNTER LINES LINE LOCALE LOCK LOW-VALUE LOW-VALUES MEMORY MERGE MESSAGE METHOD METHOD-ID MINUS MODE MODULES MORE-LABELS MOVE MULTIPLE MULTIPLY NATIONAL NATIONAL-EDITED NATIVE NEGATIVE NESTED NEXT NO NOT NULL NULLS NUMBER NUMERIC NUMERIC-EDITED OBJECT OBJECT-COMPUTER OBJECT-REFERENCE OCCURS OF OFF OMITTED ON OPEN OPTIONAL OPTIONS OR ORDER ORGANIZATION OTHER OUTPUT OVERFLOW OVERRIDE PACKED-DECIMAL PADDING PAGE PAGE-COUNTER PASSWORD PERFORM PF PH PIC PICTURE PLUS POINTER- POINTER-31 POINTER-32 POINTER-64 POINTER POSITION POSITIVE PRESENT PRINTING PROCEDURE-POINTER PROCEDURES PROCEED PROCESSING PROGRAM-ID PROGRAM-POINTER PROGRAM PROPERTY PROTOTYPE PURGE QUEUE QUOTE QUOTES RAISE RAISING RANDOM RD READ READY RECEIVE RECORD RECORDING RECORDS RECURSIVE REDEFINES REEL REFERENCE REFERENCES RELATIVE RELEASE RELOAD REMAINDER REMOVAL RENAMES REPLACE REPLACING REPORT REPORTING REPORTS REPOSITORY RERUN RESERVE RESET RESUME RETRY RETURN RETURN-CODE RETURNING REVERSED REWIND REWRITE RF RH RIGHT ROUNDED RUN SAME SCREEN SD SEARCH SECTION SECURITY SEGMENT SEGMENT-LIMIT SELECT SELF SEND SENTENCE SEPARATE SEQUENCE SEQUENTIAL SERVICE SET SHARING SHIFT-IN SHIFT-OUT SIGN SIZE SKIP1 SKIP2 SKIP3 SORT-CONTROL SORT-CORE-SIZE SORT-FILE-SIZE SORT-MERGE SORT-MESSAGE SORT-MODE-SIZE SORT-RETURN SORT SOURCE-COMPUTER SOURCES SOURCE SPACE SPACES SPECIAL-NAMES SQL SQLIMS STANDARD-1 STANDARD-2 STANDARD START STATUS STOP STRING SUB-QUEUE-1 SUB-QUEUE-2 SUB-QUEUE-3 SUBTRACT SUM SUPER SUPPRESS SYMBOLIC SYNC SYNCHRONIZED SYSTEM-DEFAULT TABLE TALLY TALLYING TAPE TERMINAL TERMINATE TEST TEXT THAN THEN THROUGH THRU TIME TIMES TITLE TO TOP TRACE TRAILING TRUE TYPE TYPEDEF UNIT UNIVERSAL UNLOCK UNSTRING UNTIL UP UPON USAGE USE USER-DEFAULT USING UTF-8 VAL-STATUS VALID VALIDATE VALIDATE-STATUS VALUE VALUES VARYING VOLATILE WHEN WHEN-COMPILED WITH WORDS WRITE WRITE-ONLY XML-CODE XML-EVENT XML-INFORMATION XML-NAMESPACE XML-NAMESPACE-PREFIX XML-NNAMESPACE XML-NNAMESPACE-PREFIX XML-NTEXT XML-SCHEMA XML-TEXT XML ZERO ZEROES ZEROS )) end state :root do # First detect the comments rule %r/^( \*).*|^(^Debug \*).*/, Comment::Special # Strings rule %r/"/, Str::Double, :string_double rule %r/'/, Str::Single, :string_single # Keywords and divisions rule %r/(?.*/, Comment::Single # Operators rule %r/[+\-*\/><=]/, Operator # Whitespace remaining rule %r/\s/, Text::Whitespace # Anything else remaining rule %r/.+/, Text end # TODO double check string escaping in COBOL # TODO Fix that a string opened by " can't be closed by ' # TODO Fix that strings can't be multi-line # Handle strings where " opens a string and must be closed by " state :string_double do # Ensure strings can't span multiple lines rule %r/[^"\\\n]+/, Str rule %r/\\./, Str::Escape rule %r/"/, Str::Double, :pop! rule %r/\n/, Error # Flag an error if a string goes to the next line end # Handle strings where ' opens a string and must be closed by ' state :string_single do # Ensure strings can't span multiple lines rule %r/[^'\\\n]+/, Str rule %r/\\./, Str::Escape rule %r/'/, Str::Single, :pop! rule %r/\n/, Error # Flag an error if a string goes to the next line end end end end