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# -*- 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/(?<![\w-])#{identifier}(?![\w-])/i do |m|
if self.class.divisions.include?(m[0].upcase)
token Keyword::Declaration
elsif self.class.sections.include?(m[0].upcase)
token Keyword::Namespace
elsif self.class.keywords.include?(m[0].upcase)
token Keyword
else
token Name
end
end
# Numbers
rule %r/[-+]?\b\d+(\.\d+)?\b/, Num
# Punctuation
rule %r/[.,;:()]/, Punctuation
# Comments
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
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