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Diffstat (limited to 'third_party/lisp/npg/examples/vs-cobol-ii.lisp')
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diff --git a/third_party/lisp/npg/examples/vs-cobol-ii.lisp b/third_party/lisp/npg/examples/vs-cobol-ii.lisp new file mode 100644 index 000000000000..9ebd45a169ce --- /dev/null +++ b/third_party/lisp/npg/examples/vs-cobol-ii.lisp @@ -0,0 +1,1901 @@ +;;; vs-cobol-ii.lisp --- sample grammar for VS-Cobol II + +;;; Copyright (C) 2003 by Walter C. Pelissero + +;;; Author: Walter C. Pelissero <walter@pelissero.de> +;;; Project: NPG a Naive Parser Generator +;;; $Id: F-1D03709AEB30BA7644C1CFA2DF60FE8C.lisp,v 1.2 2004/03/09 10:33:07 wcp Exp $ + +;;; This library is free software; you can redistribute it and/or +;;; modify it under the terms of the GNU Lesser General Public License +;;; as published by the Free Software Foundation; either version 2.1 +;;; of the License, or (at your option) any later version. +;;; This library is distributed in the hope that it will be useful, +;;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;;; Lesser General Public License for more details. +;;; You should have received a copy of the GNU Lesser General Public +;;; License along with this library; if not, write to the Free +;;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +;;; 02111-1307 USA + +;;; Commentary: +;;; +;;; A fairly incomplete VS-Cobol II grammar fro NPG. It's probably +;;; not very accurate either. + +#+cmu (ext:file-comment "$Id: F-1D03709AEB30BA7644C1CFA2DF60FE8C.lisp,v 1.2 2004/03/09 10:33:07 wcp Exp $") + +(in-package :grammar) + +(defun make-keyword (string) + "Create a keyword from STRING." + (intern (string-upcase string) :keyword)) + +(defun flatten-list (list) + "Remove one depth level in LIST." + (mapcan #'identity list)) + +(deflazy define-grammar + (let ((*package* #.*package*) + (*compile-print* (and parser::*debug* t))) + (reset-grammar) + (format t "creating Cobol grammar...~%") + (populate-grammar) + (let ((grammar (parser:generate-grammar))) + (reset-grammar) + (parser:print-grammar-figures grammar) + grammar))) + +(defun populate-grammar () +;;; +;;; Hereafter PP means Partial Program +;;; + +#+nil +(defrule pp--declarations + := identification-division environment-division? data-division? "PROCEDURE" "DIVISION" using-phrase? "." :rest) + +;;; We need to split the parsing of the declarations from the rest +;;; because the declarations may change the lexical rules (ie decimal +;;; point) + +(defrule pp--declarations + := identification-division environment-division? data-division-head-or-procedure-division-head :rest) + +(defrule data-division-head-or-procedure-division-head + := data-division-head + :reduce :data-division + := procedure-division-head + :reduce (list :procedure-division $1)) + +(defrule pp--data-division + := data-division-content procedure-division-head :rest) + +(defrule pp--sentence + := sentence :rest + := :eof) + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;;; The real grammar +;;; + +(defrule cobol-source-program + := identification-division environment-division? data-division procedure-division end-program?) + +(defrule identification-division + := identification "DIVISION" "." program-id-cobol-source-program identification-division-content + :reduce program-id-cobol-source-program) + +(defrule priority-number + := integer) + +(defrule level-number + := integer) + +(defrule to-id-or-lit + := "TO" id-or-lit) + +(defrule inspect-by-argument + := variable-identifier + := string + := figurative-constant-simple) + +(defrule figurative-constant-simple + := "ZERO" + :reduce :zero + := "ZEROS" + :reduce :zero + := "ZEROES" + :reduce :zero + := "SPACE" + :reduce :space + := "SPACES" + :reduce :space + := "HIGH-VALUE" + :reduce :high + := "HIGH-VALUES" + :reduce :high + := "LOW-VALUE" + :reduce :low + := "LOW-VALUES" + :reduce :low + := "QUOTE" + :reduce :quote + := "QUOTES" + :reduce :quote + := "NULL" + :reduce :null + := "NULLS" + :reduce :null) + +(defrule write-exceptions + := at-end-of-page-statement-list? not-at-end-of-page-statement-list? invalid-key-statement-list? not-invalid-key-statement-list?) + +(defrule set-statement-phrase + := variable-identifier+ set-oper set-src) + +(defrule set-src + := variable-identifier + := literal + := "TRUE" + := "ON" + := "OFF") + +(defrule set-oper + := "TO" + :reduce :to + := "UP" "BY" + :reduce :up + := "DOWN" "BY" + :reduce :down) + +(defrule fce-phrase + := reserve-clause + := fce-organization + := fce-access-mode + := record-key-clause + := password-clause + := alternate-record-key-clause + := file-status-clause + := padding-character-clause + := record-delimiter-clause) + +(defrule fce-organization + := organization-is? alt-indexed-relative-sequential + :reduce (list :organization (make-keyword alt-indexed-relative-sequential))) + +(defrule fce-access-mode + := "ACCESS" "MODE"? "IS"? alt-sequential-random-dynamic relative-key-clause? + :reduce (list :access-mode (make-keyword alt-sequential-random-dynamic))) + +(defrule alt-indexed-relative-sequential + := "INDEXED" + := "RELATIVE" + := "SEQUENTIAL") + +(defrule is-not + := "IS"? "NOT"?) + +(defrule all-procedures + := "ALL" "PROCEDURES") + +(defrule next-sentence + := "NEXT" "SENTENCE") + +(defrule no-rewind + := "NO" "REWIND") + +(defrule for-removal + := "FOR"? "REMOVAL") + +(defrule values + := "VALUE" + := "VALUES") + +(defrule records + := "RECORD" + := "RECORDS") + +(defrule end-program + := "END" "PROGRAM" program-name ".") + +(defrule environment-division + := "ENVIRONMENT" "DIVISION" "." environment-division-content) + +(defrule data-division-head + := "DATA" "DIVISION" ".") + +(defrule data-division + := data-division-head data-division-content + :reduce data-division-content) + +(defrule identification + := "IDENTIFICATION" + := "ID") + +(defrule identification-division-content + := identification-division-phrase*) + +(defrule author + := "AUTHOR" ".") + +(defrule installation + := "INSTALLATION" ".") + +(defrule date-written + := "DATE-WRITTEN" ".") + +(defrule date-compiled + := "DATE-COMPILED" ".") + +(defrule security + := "SECURITY" ".") + +(defrule remarks + := "REMARKS" ".") + +(defrule identification-division-phrase + := author + := installation + := date-written + := date-compiled + := security + := remarks) + +(defrule program-id-cobol-source-program + := "PROGRAM-ID" "."? program-name initial-program? "." + :reduce program-name) + +(defrule initial-program + := "IS"? "INITIAL" "PROGRAM"?) + +(defrule environment-division-content + := configuration-section? input-output-section?) + +(defrule input-output-section + := "INPUT-OUTPUT" "SECTION" "." file-control-paragraph? i-o-control-paragraph? + :reduce file-control-paragraph) + +(defrule file-control-paragraph + := "FILE-CONTROL" "." file-control-entry*) + +(defrule file-control-entry + := select-clause assign-clause fce-phrase* "." + :reduce (append select-clause + assign-clause + (flatten-list fce-phrase))) + +(defrule organization-is + := "ORGANIZATION" "IS"?) + +(defrule alt-sequential-random-dynamic + := "SEQUENTIAL" + := "RANDOM" + := "DYNAMIC") + +(defrule select-clause + := "SELECT" "OPTIONAL"? file-name + :reduce (list file-name :optional (and $2 t))) + +(defrule assign-clause + := "ASSIGN" "TO"? alt-assignment-name-literal+ + :reduce (list :assign alt-assignment-name-literal)) + +(defrule alt-assignment-name-literal + := assignment-name + := literal) + +(defrule reserve-clause + := "RESERVE" integer areas?) + +(defrule areas + := "AREA" + := "AREAS") + +(defrule padding-character-clause + := "PADDING" "CHARACTER"? "IS"? alt-qualified-data-name-literal) + +(defrule record-delimiter-clause + := "RECORD" "DELIMITER" "IS"? record-delimiter-name) + +(defrule record-delimiter-name + := "STANDARD-1" + := assignment-name) + +(defrule password-clause + := "PASSWORD" "IS"? data-name) + +(defrule file-status-clause + := "FILE"? "STATUS" "IS"? qualified-data-name qualified-data-name? + :reduce (list :file-status qualified-data-name)) + +(defrule relative-key-clause + := "RELATIVE" "KEY"? "IS"? qualified-data-name + :reduce (list :relative-key qualified-data-name)) + +(defrule record-key-clause + := "RECORD" "KEY"? "IS"? qualified-data-name + :reduce (list :key qualified-data-name)) + +(defrule alternate-record-key-clause + := "ALTERNATE" "RECORD"? "KEY"? "IS"? qualified-data-name password-clause? with-duplicates? + :reduce (list :alternate-key qualified-data-name with-duplicates)) + +(defrule with-duplicates + := "WITH"? "DUPLICATES") + +(defrule i-o-control-paragraph + := "I-O-CONTROL" "." i-o-sam? i-o-sort-merge?) + +(defrule i-o-sam + := qsam-or-sam-or-vsam-i-o-control-entries+ ".") + +(defrule i-o-sort-merge + := sort-merge-i-o-control-entries ".") + +(defrule qsam-or-sam-or-vsam-i-o-control-entries + := qsam-or-sam-or-vsam-i-o-control-entries-1 + := qsam-or-sam-or-vsam-i-o-control-entries-2 + := qsam-or-sam-or-vsam-i-o-control-entries-3 + := qsam-or-sam-or-vsam-i-o-control-entries-4) + +(defrule qsam-or-sam-or-vsam-i-o-control-entries-1 + := "RERUN" "ON" alt-assignment-name-file-name "EVERY"? every-phrase "OF"? file-name) + +(defrule every-phrase-1 + := integer "RECORDS") + +(defrule every-phrase-2 + := "END" "OF"? alt-reel-unit) + +(defrule every-phrase + := every-phrase-1 + := every-phrase-2) + +(defrule alt-assignment-name-file-name + := assignment-name + := file-name) + +(defrule qsam-or-sam-or-vsam-i-o-control-entries-2 + := "SAME" "RECORD"? "AREA"? "FOR"? file-name file-name+) + +(defrule qsam-or-sam-or-vsam-i-o-control-entries-3 + := "MULTIPLE" "FILE" "TAPE"? "CONTAINS"? file-name-position+) + +(defrule position + := "POSITION" integer) + +(defrule file-name-position + := file-name position?) + +(defrule qsam-or-sam-or-vsam-i-o-control-entries-4 + := "APPLY" "WRITE-ONLY" "ON"? file-name+) + +(defrule sort-merge-i-o-control-entries + := rerun-on? same-area+) + +(defrule rerun-on + := "RERUN" "ON" assignment-name) + +(defrule record-sort + := "RECORD" + := "SORT" + := "SORT-MERGE") + +(defrule same-area + := "SAME" record-sort "AREA"? "FOR"? file-name file-name+) + +(defrule configuration-section + := "CONFIGURATION" "SECTION" "." configuration-section-paragraph* + :reduce (flatten-list configuration-section-paragraph)) + +(defrule configuration-section-paragraph + := source-computer-paragraph + := object-computer-paragraph + := special-names-paragraph) + +(defrule source-computer-paragraph + := "SOURCE-COMPUTER" "." source-computer-name + :reduce (list :source-computer source-computer-name)) + +(defrule with-debugging-mode + := "WITH"? "DEBUGGING" "MODE") + +(defrule source-computer-name + := computer-name with-debugging-mode? "." + :reduce computer-name) + +(defrule object-computer-paragraph + := "OBJECT-COMPUTER" "." object-computer-name + :reduce (list :object-computer object-computer-name)) + +(defrule memory-size-type + := "WORDS" + := "CHARACTERS" + := "MODULES") + +(defrule memory-size + := "MEMORY" "SIZE"? integer memory-size-type) + +(defrule object-computer-name + := computer-name memory-size? object-computer-paragraph-sequence-phrase "." + :reduce computer-name) + +(defrule object-computer-paragraph-sequence-phrase + := program-collating-sequence? segment-limit?) + +(defrule program-collating-sequence + := "PROGRAM"? "COLLATING"? "SEQUENCE" "IS"? alphabet-name) + +(defrule segment-limit + := "SEGMENT-LIMIT" "IS"? priority-number) + +(defrule special-names-paragraph + := "SPECIAL-NAMES" "." special-names-paragraph-phrase* special-names-paragraph-clause* "." + :reduce (flatten-list special-names-paragraph-clause)) + +(defrule is-mnemonic-name + := "IS"? mnemonic-name special-names-paragraph-status-phrase?) + +(defrule special-names-paragraph-phrase-tail + := is-mnemonic-name + := special-names-paragraph-status-phrase) + +(defrule special-names-paragraph-phrase + := environment-name special-names-paragraph-phrase-tail) + +(defrule special-names-paragraph-status-phrase + := special-names-paragraph-status-phrase-1 + := special-names-paragraph-status-phrase-2) + +(defrule special-names-paragraph-status-phrase-1 + := "ON" "STATUS"? "IS"? condition off-status?) + +(defrule off-status + := "OFF" "STATUS"? "IS"? condition) + +(defrule special-names-paragraph-status-phrase-2 + := "OFF" "STATUS"? "IS"? condition on-status?) + +(defrule on-status + := "ON" "STATUS"? "IS"? condition) + +(defrule special-names-paragraph-clause + ;; := alphabet-clause + ;; := symbolic-characters-clause + := currency-sign-clause + := decimal-point-clause) + +(defrule alphabet-clause + := "ALPHABET" alphabet-name "IS"? alphabet-type) + +(defrule alphabet-type-also + := "ALSO" literal) + +(defrule alphabet-type-alsos + := alphabet-type-also+) + +(defrule alphabet-type-also-through + := through-literal + := alphabet-type-alsos) + +(defrule alphabet-type-other + := literal alphabet-type-also-through?) + +(defrule alphabet-type-others + := alphabet-type-other+) + +(defrule alphabet-type + := "STANDARD-1" + := "STANDARD-2" + := "NATIVE" + := "EBCDIC" + := alphabet-type-others) + +(defrule symbolic-characters-clause + := "SYMBOLIC" "CHARACTERS"? symbolic-character-mapping+ in-alphabet-name?) + +(defrule are + := "ARE" + := "IS") + +(defrule symbolic-character-mapping + := symbolic-character+ are? integer+) + +(defrule in-alphabet-name + := "IN" alphabet-name) + +(defrule currency-sign-clause + := "CURRENCY" "SIGN"? "IS"? literal + :reduce (list :currency-sign literal)) + +(defrule decimal-point-clause + := "DECIMAL-POINT" "IS"? "COMMA" + :reduce (list :decimal-point #\,)) + +(defrule data-division-content + := file-section? working-storage-section? linkage-section?) + +(defrule file-section-entry + := file-and-sort-description-entry data-description-entry+ + :reduce (cons file-and-sort-description-entry data-description-entry)) + +(defrule file-section-head + := "FILE" "SECTION" ".") + +(defrule file-section + := file-section-head file-section-entry* + :reduce $2) + +(defrule working-storage-section-head + := "WORKING-STORAGE" "SECTION" ".") + +(defrule working-storage-section + := working-storage-section-head data-description-entry* + :reduce $2) + +(defrule linkage-section-head + := "LINKAGE" "SECTION" ".") + +(defrule linkage-section + := linkage-section-head data-description-entry* + :reduce $2) + +(defrule file-and-sort-description-entry + := alt-fd-sd file-name file-and-sort-description-entry-clause* "." + :reduce (list (make-keyword alt-fd-sd) file-name file-and-sort-description-entry-clause)) + +(defrule alt-fd-sd + := "FD" + := "SD") + +(defrule file-and-sort-description-entry-clause + := external-clause + := global-clause + := block-contains-clause + := record-clause + := label-records-clause + := value-of-clause + := data-records-clause + := linage-clause + := recording-mode-clause + := code-set-clause) + +(defrule integer-to + := integer "TO") + +(defrule block-contains-clause + := "BLOCK" "CONTAINS"? integer-to? integer alt-characters-records?) + +(defrule alt-characters-records + := "CHARACTERS" + := "RECORDS" + := "RECORD") + +(defrule record-clause + := "RECORD" record-clause-tail) + +(defrule depending-on + := "DEPENDING" "ON"? data-name) + +(defrule record-clause-tail-1 + := "CONTAINS"? integer "CHARACTERS"?) + +(defrule record-clause-tail-2 + := "CONTAINS"? integer "TO" integer "CHARACTERS"?) + +(defrule record-clause-tail-3 + := record-varying-phrase depending-on?) + +(defrule record-clause-tail + := record-clause-tail-2 + := record-clause-tail-1 + := record-clause-tail-3) + +(defrule record-varying-phrase + := "IS"? "VARYING" "IN"? "SIZE"? from-integer? to-integer? "CHARACTERS"?) + +(defrule from-integer + := "FROM"? integer) + +(defrule to-integer + := "TO" integer) + +(defrule label-records-clause + := "LABEL" records-are label-records-clause-tail + :reduce (list :label-record label-records-clause-tail)) + +(defrule data-names + := data-name+) + +(defrule label-records-clause-tail + := "STANDARD" :reduce :standard + := "OMITTED" :reduce :omitted + := data-names) + +(defrule value-of-clause + := "VALUE" "OF" value-of-clause-tail+) + +(defrule alt-qualified-data-name-literal + := qualified-data-name + := literal) + +(defrule value-of-clause-tail + := variable-identifier "IS"? alt-qualified-data-name-literal) + +(defrule data-records-clause + := "DATA" records-are data-name+) + +(defrule records-are + := records are?) + +(defrule linage-clause + := "LINAGE" "IS"? alt-data-name-integer "LINES"? linage-footing-phrase) + +(defrule linage-footing-phrase + := footing? lines-top? lines-bottom?) + +(defrule alt-data-name-integer + := data-name + := integer) + +(defrule footing + := "WITH"? "FOOTING" "AT"? alt-data-name-integer) + +(defrule lines-top + := "LINES"? "AT"? "TOP" alt-data-name-integer) + +(defrule lines-bottom + := "LINES"? "AT"? "BOTTOM" alt-data-name-integer) + +(defrule recording-mode-clause + := "RECORDING" "MODE"? "IS"? variable-identifier) + +(defrule code-set-clause + := "CODE-SET" "IS"? alphabet-name) + +(defrule data-description-entry + := level-number alt-data-name-filler? data-description-entry-clause* "." + :reduce (append (list level-number alt-data-name-filler) + (flatten-list data-description-entry-clause))) + +(defrule alt-data-name-filler + := data-name + := "FILLER" + :reduce (list)) + +(defrule data-description-entry-clause + := picture-clause + := redefines-clause + := blank-when-zero-clause + := external-clause + := global-clause + := justified-clause + := occurs-clause + := sign-clause + := synchronized-clause + := usage-clause + := renames-clause + := value-clause) + +(defrule value-clause + := "VALUE" "IS"? literal + :reduce (list :value literal)) + +(defrule redefines-clause + := "REDEFINES" data-name + :reduce `(:redefines ,data-name)) + +(defrule blank-when-zero-clause + := "BLANK" "WHEN"? zeroes + :reduce '(:blank-when-zero t)) + +(defrule zeroes + := "ZERO" + := "ZEROS" + := "ZEROES") + +(defrule external-clause + := "IS"? "EXTERNAL" + :reduce '(:external t)) + +(defrule global-clause + := "IS"? "GLOBAL" + :reduce '(:global t)) + +(defrule justified-clause + := justified "RIGHT"? + :reduce `(:justified ,(if $2 :right :left))) + +(defrule justified + := "JUSTIFIED" + := "JUST") + +(defrule occurs-clause + := "OCCURS" integer "TIMES"? occurs-clause-key* indexed-by? + ;; to be completed -wcp16/7/03. + :reduce `(:times ,integer) + := "OCCURS" integer "TO" integer "TIMES"? "DEPENDING" "ON"? qualified-data-name occurs-clause-key* indexed-by? + ;; to be completed -wcp16/7/03. + :reduce `(:times (,integer ,integer2 ,qualified-data-name))) + +(defrule occurs-clause-key + := alt-ascending-descending "KEY"? "IS"? qualified-data-name+) + +(defrule indexed-by + := "INDEXED" "BY"? index-name+) + +(defrule picture-clause + := picture "IS"? picture-string + :reduce `(:picture ,picture-string)) + +(defrule picture + := "PICTURE" + := "PIC") + +(defrule sign-clause + := sign-is? alt-leading-trailing separate-character? + :reduce `(:separate-sign ,separate-character :sign-position ,alt-leading-trailing)) + +(defrule sign-is + := "SIGN" "IS"?) + +(defrule separate-character + := "SEPARATE" "CHARACTER"? + :reduce t) + +(defrule alt-leading-trailing + := "LEADING" + :reduce :leading + := "TRAILING" + :reduce :trailing) + +(defrule synchronized-clause + := synchronized alt-left-right? + :reduce `(:synchronized ,(if alt-left-right + alt-left-right + t))) + +(defrule alt-left-right + := "LEFT" + :reduce :left + := "RIGHT" + :reduce :right) + +(defrule synchronized + := "SYNCHRONIZED" + := "SYNC") + +(defrule usage-clause + := usage-is? usage + :reduce (list :encoding usage)) + +(defrule usage-is + := "USAGE" "IS"?) + +(defrule usage + := "BINARY" + :reduce :binary + := "COMP" + :reduce :comp + := "COMP-1" + :reduce :comp1 + := "COMP-2" + :reduce :comp2 + := "COMP-3" + :reduce :comp3 + := "COMP-4" + :reduce :comp4 + := "COMPUTATIONAL" + :reduce :comp + := "COMPUTATIONAL-1" + :reduce :comp1 + := "COMPUTATIONAL-2" + :reduce :comp2 + := "COMPUTATIONAL-3" + :reduce :comp3 + := "COMPUTATIONAL-4" + :reduce :comp4 + := "DISPLAY" + :reduce :display + := "DISPLAY-1" + :reduce :display1 + := "INDEX" + :reduce :index + := "PACKED-DECIMAL" + :reduce :packed-decimal + := "POINTER" + :reduce :pointer) + +(defrule renames-clause + := "RENAMES" qualified-data-name through-qualified-data-name? + :reduce `(:renames ,qualified-data-name ,through-qualified-data-name)) + +(defrule through-qualified-data-name + := through qualified-data-name + :reduce qualified-data-name) + +(defrule condition-value-clause + := values-are literal-through-literal+) + +(defrule through-literal + := through literal) + +(defrule literal-through-literal + := literal through-literal?) + +(defrule values-are + := values are?) + +(defrule procedure-division-head + := "PROCEDURE" "DIVISION" using-phrase? ".") + +(defrule procedure-division + := procedure-division-head sentence+) + +(defrule using-phrase + := "USING" data-name+) + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + +(defrule declaratives + := "DECLARATIVES" "." declaratives-content+ "END" "DECLARATIVES" ".") + +(defrule declaratives-content + := cobol-identifier "SECTION" "." use-statement "." sentence*) + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + +(defrule paragraph-header + := cobol-identifier "SECTION"? + :reduce (list (if $2 :section :label) $1)) + +(defrule sentence + := declaratives + := statement* "." + :reduce $1 + := paragraph-header "." + :reduce $1) + +(defrule statement + := move-statement + := if-statement + := perform-statement + := go-to-statement + := accept-statement + := add-statement + := alter-statement + := call-statement + := cancel-statement + := close-statement + := compute-statement + := continue-statement + := delete-statement + := display-statement + := divide-statement + := entry-statement + := evaluate-statement + := exit-program-statement + := exit-statement + := goback-statement + := initialize-statement + := inspect-statement + := merge-statement + := multiply-statement + := open-statement + := read-statement + := release-statement + := return-statement + := rewrite-statement + := search-statement + := set-statement + := sort-statement + := start-statement + := stop-statement + := string-statement + := subtract-statement + := unstring-statement + := write-statement + := paragraph-header) + +(defrule accept-statement + := "ACCEPT" variable-identifier "FROM" date + := "ACCEPT" variable-identifier "AT" screen-coordinates + :reduce (apply #'list 'accept-at variable-identifier screen-coordinates) + := "ACCEPT" variable-identifier from-environment-name?) + +(defrule from-environment-name + := "FROM" cobol-identifier) + + +(defrule date + := "DATE" + := "DAY" + := "DAY-OF-WEEK" + := "TIME") + +(defrule add-statement + := "ADD" id-or-lit+ to-id-or-lit? "GIVING" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-ADD"? + := "ADD" id-or-lit+ "TO" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-ADD"? + := "ADD" corresponding variable-identifier "TO" variable-identifier "ROUNDED"? on-size-error-statement-list? not-on-size-error-statement-list? "END-ADD"?) + +(defrule statement-list + := statement+) + +(defrule alter-statement + := "ALTER" procedure-to-procedure+) + +(defrule proceed-to + := "PROCEED" "TO") + +(defrule procedure-to-procedure + := procedure-name "TO" proceed-to? procedure-name) + +(defrule call-statement + := "CALL" id-or-lit using-parameters? call-rest-phrase "END-CALL"? + :reduce (list 'call id-or-lit (cons 'list using-parameters))) + +(defrule by-reference + := "BY"? "REFERENCE") + +(defrule content-parameter-value + := cobol-identifier + := literal) + +(defrule reference-parameter + := by-reference? variable-identifier) + +(defrule content-parameter + := "BY"? "CONTENT" content-parameter-value+) + +(defrule parameter + := reference-parameter + := content-parameter + := literal) + +(defrule using-parameters + := "USING" parameter+) + +(defrule call-rest-phrase + := on-exception-statement-list? not-on-exception-statement-list? on-overflow-statement-list?) + +(defrule on-exception-statement-list + := "ON"? "EXCEPTION" statement-list) + +(defrule not-on-exception-statement-list + := "NOT" "ON"? "EXCEPTION" statement-list) + +(defrule cancel-statement + := "CANCEL" id-or-lit+) + +(defrule close-statement + := "CLOSE" close-statement-file-name+ + :reduce (list 'close close-statement-file-name)) + +(defrule alt-removal-no-rewind + := for-removal + := with-no-rewind) + +(defrule alt-reel-unit + := "REEL" + := "UNIT") + +(defrule alt-no-rewind-lock + := no-rewind + := "LOCK") + +(defrule close-statement-options-1 + := alt-reel-unit alt-removal-no-rewind?) + +(defrule close-statement-options-2 + := "WITH"? alt-no-rewind-lock) + +(defrule close-statement-options + := close-statement-options-1 + := close-statement-options-2) + +(defrule close-statement-file-name + := file-name close-statement-options?) + +(defrule compute-statement + := "COMPUTE" cobword-rounded+ equal arithmetic-expression on-size-error-statement-list? not-on-size-error-statement-list? "END-COMPUTE"? + :reduce (list 'compute cobword-rounded arithmetic-expression :on-size-error on-size-error-statement-list + :not-on-size-error not-on-size-error-statement-list)) + +(defrule equal + := "=" + := "EQUAL") + +(defrule continue-statement + := "CONTINUE") + +(defrule delete-statement + := "DELETE" file-name "RECORD"? invalid-key-statement-list? not-invalid-key-statement-list? "END-DELETE"? + :reduce (list 'delete file-name :invalid invalid-key-statement-list :not-invalid not-invalid-key-statement-list)) + +(defrule display-statement + := "DISPLAY" id-or-lit+ upon-environment-name? with-no-advancing? + :reduce (list 'display (cons 'list id-or-lit) :upon upon-environment-name :advance (not with-no-advancing)) + := "DISPLAY" id-or-lit "AT" screen-coordinates + :reduce (apply #'list 'display-at id-or-lit screen-coordinates)) + +(defrule screen-coordinates + := integer + :reduce (multiple-value-list (truncate integer 100))) + +(defrule upon-environment-name + := "UPON" cobol-identifier) + +(defrule with-no-advancing + := "WITH"? "NO" "ADVANCING") + +(defrule divide-statement + := "DIVIDE" id-or-lit "INTO" id-or-lit "GIVING" variable-identifier "ROUNDED"? "REMAINDER" variable-identifier on-size-error-statement-list? not-on-size-error-statement-list? "END-DIVIDE"? + := "DIVIDE" id-or-lit "BY" id-or-lit "GIVING" variable-identifier "ROUNDED"? "REMAINDER" variable-identifier on-size-error-statement-list? not-on-size-error-statement-list? "END-DIVIDE"? + := "DIVIDE" id-or-lit "INTO" id-or-lit "GIVING" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-DIVIDE"? + := "DIVIDE" id-or-lit "BY" id-or-lit "GIVING" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-DIVIDE"? + := "DIVIDE" id-or-lit "INTO" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-DIVIDE"?) + +(defrule entry-statement + := "ENTRY" literal using-phrase?) + +(defrule evaluate-statement + := "EVALUATE" evaluate-condition also-phrase* when-phrases+ when-other-phrase? "END-EVALUATE"?) + +(defrule evaluate-condition + := condition + := "TRUE" + := "FALSE") + +(defrule also-phrase + := "ALSO" evaluate-condition) + +(defrule when-phrase-also-phrase + := "ALSO" evaluate-phrase) + +(defrule when-phrase + := "WHEN" evaluate-phrase when-phrase-also-phrase*) + +(defrule when-phrases + := when-phrase+ statement-list) + +(defrule when-other-phrase + := "WHEN" "OTHER" statement-list) + +(defrule evaluate-phrase + := "ANY" + := condition + := "TRUE" + := "FALSE" + := evaluate-phrase-1) + +(defrule evaluate-phrase-1 + := "NOT"? arithmetic-expression through-arithmetic-expression?) + +(defrule through-arithmetic-expression + := through arithmetic-expression) + +(defrule exit-statement + := "EXIT" + :reduce '(exit-paragraph)) + +(defrule exit-program-statement + := "EXIT" "PROGRAM" + :reduce '(exit-program)) + +(defrule goback-statement + := "GOBACK" + :reduce '(go-back)) + +(defrule go-to-statement + := "GO" "TO"? procedure-name+ "DEPENDING" "ON"? variable-identifier + :reduce (list 'goto-depending variable-identifier procedure-name) + := "GO" "TO"? procedure-name + :reduce (list 'goto procedure-name)) + +(defrule if-phrase + := "IF" condition "THEN"? alt-statement-list-next-sentence "ELSE" alt-statement-list-next-sentence + :reduce (list 'if condition + (if (cdr alt-statement-list-next-sentence) + (cons 'progn alt-statement-list-next-sentence) + (car alt-statement-list-next-sentence)) + (if (cdr alt-statement-list-next-sentence2) + (cons 'progn alt-statement-list-next-sentence2) + (car alt-statement-list-next-sentence2))) + := "IF" condition "THEN"? alt-statement-list-next-sentence + :reduce (append (list 'when condition) alt-statement-list-next-sentence)) + +(defrule if-statement + := if-phrase "END-IF"? + :reduce $1) + +(defrule initialize-statement + := "INITIALIZE" variable-identifier+ initialize-replacing-phrase?) + +(defrule initialize-replacing-type + := "ALPHABETIC" + := "ALPHANUMERIC" + := "NUMERIC" + := "ALPHANUMERIC-EDITED" + := "NUMERIC-EDITED" + := "DBCS" + := "EGCS") + +(defrule initialize-replacing-argument + := initialize-replacing-type "DATA"? "BY" id-or-lit) + +(defrule initialize-replacing-phrase + := "REPLACING" initialize-replacing-argument+) + +(defrule inspect-statement + := inspect-statement-1 + := inspect-statement-2 + := inspect-statement-3 + := inspect-statement-4) + +(defrule inspect-statement-1 + := "INSPECT" variable-identifier "TALLYING" tallying-argument+) + +(defrule inspect-statement-2 + := "INSPECT" variable-identifier "CONVERTING" id-or-lit "TO" id-or-lit before-after-phrase*) + +(defrule inspect-statement-3 + := "INSPECT" variable-identifier "TALLYING" tallying-argument+ "REPLACING" inspect-replacing-phrase+) + +(defrule tallying-for-id-or-lit + := id-or-lit before-after-phrase*) + +(defrule alt-all-leading + := "ALL" + := "LEADING") + +(defrule tallying-for-argument-1 + := "CHARACTERS" before-after-phrase*) + +(defrule tallying-for-argument-2 + := alt-all-leading tallying-for-id-or-lit+) + +(defrule tallying-for-argument + := tallying-for-argument-1 + := tallying-for-argument-2) + +(defrule tallying-argument + := variable-identifier "FOR" tallying-for-argument+) + +(defrule inspect-statement-4 + := "INSPECT" variable-identifier "REPLACING" inspect-replacing-phrase+) + +(defrule inspect-replacing-argument + := inspect-by-argument "BY" inspect-by-argument before-after-phrase*) + +(defrule alt-all-leading-first + := "ALL" + := "LEADING" + := "FIRST") + +(defrule inspect-replacing-phrase-1 + := "CHARACTERS" "BY" id-or-lit before-after-phrase*) + +(defrule inspect-replacing-phrase-2 + := alt-all-leading-first inspect-replacing-argument+) + +(defrule inspect-replacing-phrase + := inspect-replacing-phrase-1 + := inspect-replacing-phrase-2) + +(defrule before-after-phrase + := alt-before-after "INITIAL"? id-or-lit) + +(defrule merge-statement + := "MERGE" file-name on-key-phrase+ collating-sequence? "USING" file-name file-name+ merge-statement-tail) + +(defrule on-key-phrase + := "ON"? alt-ascending-descending "KEY"? qualified-data-name+) + +(defrule merge-statement-tail + := output-procedure + := giving-file-names) + +(defrule move-statement + := "MOVE" id-or-lit "TO" variable-identifier+ + :reduce (apply #'list 'move id-or-lit variable-identifier) + := "MOVE" corresponding variable-identifier "TO" variable-identifier+ + :reduce (apply #'list 'move-corresponding variable-identifier variable-identifier2)) + +(defrule multiply-statement + := "MULTIPLY" id-or-lit "BY" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-MULTIPLY"? + :reduce (list 'multiply id-or-lit cobword-rounded :on-size-error on-size-error-statement-list + :not-on-size-error not-on-size-error-statement-list) + := "MULTIPLY" id-or-lit "BY" id-or-lit "GIVING" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-MULTIPLY"? + :reduce (list 'multiply id-or-lit id-or-lit2 :giving cobword-rounded + :on-size-error on-size-error-statement-list + :not-on-size-error not-on-size-error-statement-list)) + +(defrule open-statement + := "OPEN" open-statement-phrase+ + :reduce (list 'open open-statement-phrase)) + +(defrule alt-reversed-with-no-rewind + := "REVERSED" + := with-no-rewind) + +(defrule open-statement-input-file-name + := file-name alt-reversed-with-no-rewind?) + +(defrule with-no-rewind + := "WITH"? "NO" "REWIND") + +(defrule open-statement-output-file-name + := file-name with-no-rewind?) + +(defrule open-statement-input + := "INPUT" open-statement-input-file-name+) + +(defrule open-statement-output + := "OUTPUT" open-statement-output-file-name+) + +(defrule open-statement-i-o + := "I-O" file-name+) + +(defrule open-statement-extend + := "EXTEND" file-name+) + +(defrule open-statement-phrase + := open-statement-input + := open-statement-output + := open-statement-i-o + := open-statement-extend) + +(defrule perform-statement + := "PERFORM" procedure-name through-procedure-name? perform-until-phrase + :reduce `(perform-until ,procedure-name ,through-procedure-name ,perform-until-phrase) + := "PERFORM" procedure-name through-procedure-name? perform-varying-phrase perform-after-phrase* + :reduce `(perform-varying ,perform-varying-phrase ,procedure-name ,through-procedure-name ,perform-after-phrase) + := "PERFORM" procedure-name through-procedure-name? cobword-int "TIMES" + :reduce `(perform-times ,cobword-int ,procedure-name ,through-procedure-name) + := "PERFORM" procedure-name through-procedure-name? + :reduce (append (list 'perform procedure-name) through-procedure-name)) + +(defrule perform-varying-phrase + := with-test? "VARYING" variable-identifier "FROM" id-or-lit "BY" id-or-lit "UNTIL" condition) + +(defrule perform-after-phrase + := "AFTER" variable-identifier "FROM" id-or-lit "BY" id-or-lit "UNTIL" condition) + +(defrule perform-until-phrase + := with-test? "UNTIL" condition) + +(defrule with-test + := "WITH"? "TEST" alt-before-after + :reduce alt-before-after) + +(defrule read-statement + := "READ" file-name "NEXT"? "RECORD"? into-identifier? key-is-qualified-data-name? invalid-key-statement-list? not-invalid-key-statement-list? at-end-statement-list? not-at-end-statement-list? "END-READ"?) + +(defrule key-is-qualified-data-name + := "KEY" "IS"? qualified-data-name) + +(defrule release-statement + := "RELEASE" record-name from-identifier?) + +(defrule return-statement + := "RETURN" file-name "RECORD"? into-identifier? "AT"? "END" statement-list not-at-end-statement-list? "END-RETURN"?) + +(defrule into-identifier + := "INTO" variable-identifier) + +(defrule not-at-end-statement-list + := "NOT" "AT"? "END" statement-list) + +(defrule rewrite-statement + := "REWRITE" record-name from-identifier? invalid-key-statement-list? not-invalid-key-statement-list? "END-REWRITE"?) + +(defrule search-statement + := search-statement-1 + := search-statement-2) + +(defrule search-statement-1 + := "SEARCH" cobol-identifier varying-identifier? at-end-statement-list? when-condition-stats+ "END-SEARCH"?) + +(defrule varying-identifier + := "VARYING" variable-identifier) + +(defrule when-condition-stats + := "WHEN" condition alt-statement-list-next-sentence) + +(defrule search-statement-2 + := "SEARCH" "ALL" variable-identifier at-end-statement-list? "WHEN" search-statement-condition search-statement-condition-tail* alt-statement-list-next-sentence "END-SEARCH"?) + +(defrule at-end-statement-list + := "AT"? "END" statement-list) + +(defrule search-statement-equal-expression + := variable-identifier "IS"? equal-to arithmetic-expression + :reduce (list '= variable-identifier arithmetic-expression)) + +(defrule search-statement-condition + := search-statement-equal-expression + := condition-name-reference) + +(defrule search-statement-condition-tail + := "AND" search-statement-condition) + +(defrule alt-statement-list-next-sentence + := statement+ + := next-sentence + :reduce :next-sentence) + +(defrule set-statement + := "SET" set-statement-phrase+) + +(defrule sort-statement + := "SORT" file-name on-key-is-phrase+ with-duplicates-in-order? collating-sequence? sort-statement-in sort-statement-out) + +(defrule key-is + := "KEY" "IS"?) + +(defrule alt-ascending-descending + := "ASCENDING" + := "DESCENDING") + +(defrule on-key-is-phrase + := "ON"? alt-ascending-descending key-is? qualified-data-name+) + +(defrule with-duplicates-in-order + := "WITH"? "DUPLICATES" "IN"? "ORDER"?) + +(defrule collating-sequence + := "COLLATING"? "SEQUENCE" "IS"? alphabet-name) + +(defrule through + := "THROUGH" + := "THRU") + +(defrule through-procedure-name + := through procedure-name + :reduce procedure-name) + +(defrule using-file-names + := "USING" file-name+) + +(defrule input-procedure + := "INPUT" "PROCEDURE" "IS"? procedure-name through-procedure-name?) + +(defrule giving-file-names + := "GIVING" file-name+) + +(defrule output-procedure + := "OUTPUT" "PROCEDURE" "IS"? procedure-name through-procedure-name?) + +(defrule sort-statement-in + := using-file-names + := input-procedure) + +(defrule sort-statement-out + := giving-file-names + := output-procedure) + +(defrule start-statement + := "START" file-name key-is-rel-op-qualified-data-name? invalid-key-statement-list? not-invalid-key-statement-list? "END-START"?) + +(defrule rel-op + := equal-to + :reduce '= + := greater-than + :reduce '> + := greater-equal + :reduce '>=) + +(defrule key-is-rel-op-qualified-data-name + := "KEY" "IS"? rel-op qualified-data-name + :reduce (list rel-op qualified-data-name)) + +(defrule stop-statement + := "STOP" alt-run-literal + :reduce '(stop)) + +(defrule alt-run-literal + := "RUN" + := literal) + +(defrule string-statement + := "STRING" delimited-by-phrase+ "INTO" variable-identifier with-pointer-identifier? on-overflow-statement-list? not-on-overflow-statement-list? "END-STRING"? + :reduce (list 'string-concat delimited-by-phrase variable-identifier :with-pointer with-pointer-identifier :on-overflow on-overflow-statement-list :not-on-overflow not-on-overflow-statement-list)) + +(defrule id-or-lit-size + := literal + := variable-identifier + := "SIZE") + +(defrule delimited-by-phrase + := id-or-lit+ "DELIMITED" "BY"? id-or-lit-size + :reduce (list id-or-lit id-or-lit-size)) + +(defrule subtract-statement + := "SUBTRACT" id-or-lit+ "FROM" id-or-lit "GIVING" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-SUBTRACT"? + :reduce (list 'subtract-giving id-or-lit id-or-lit2 cobword-rounded + :on-size-error on-size-error-statement-list + :not-on-size-error not-on-size-error-statement-list) + := "SUBTRACT" id-or-lit+ "FROM" cobword-rounded+ on-size-error-statement-list? not-on-size-error-statement-list? "END-SUBTRACT"? + :reduce (list 'subtract id-or-lit cobword-rounded + :on-size-error on-size-error-statement-list + :not-on-size-error not-on-size-error-statement-list) + := "SUBTRACT" corresponding variable-identifier "FROM" variable-identifier "ROUNDED"? on-size-error-statement-list? not-on-size-error-statement-list? "END-SUBTRACT"? + :reduce (list 'subtract-corr variable-identifier variable-identifier + :rounded (and $5 t) + :on-size-error on-size-error-statement-list + :not-on-size-error not-on-size-error-statement-list)) + +(defrule cobword-rounded + := variable-identifier "ROUNDED"? + :reduce (list variable-identifier (and $2 t))) + +(defrule on-size-error-statement-list + := "ON"? "SIZE" "ERROR" statement-list + :reduce statement-list) + +(defrule not-on-size-error-statement-list + := "NOT" "ON"? "SIZE" "ERROR" statement-list + :reduce statement-list) + +(defrule corresponding + := "CORRESPONDING" + := "CORR") + +(defrule unstring-statement + := "UNSTRING" variable-identifier delimited-by-all-phrase? "INTO" unstring-statement-dst+ with-pointer-identifier? tallying-in-identifier? on-overflow-statement-list? not-on-overflow-statement-list? "END-UNSTRING"? + :reduce (list 'unstring variable-identifier unstring-statement-dst + :delimited-by-all delimited-by-all-phrase + :with-pointer with-pointer-identifier + :tallying tallying-in-identifier + :on-overflow on-overflow-statement-list + :not-on-overflow not-on-overflow-statement-list)) + +(defrule id-or-lit + := literal + := variable-identifier) + +(defrule or-all-id-or-lit + := "OR" "ALL"? id-or-lit) + +(defrule delimited-by-all-phrase + := "DELIMITED" "BY"? "ALL"? id-or-lit or-all-id-or-lit*) + +(defrule delimiter-in-identifier + := "DELIMITER" "IN"? variable-identifier) + +(defrule count-in-identifier + := "COUNT" "IN"? variable-identifier) + +(defrule unstring-statement-dst + := variable-identifier delimiter-in-identifier? count-in-identifier?) + +(defrule with-pointer-identifier + := "WITH"? "POINTER" variable-identifier) + +(defrule tallying-in-identifier + := "TALLYING" "IN"? variable-identifier) + +(defrule on-overflow-statement-list + := "ON"? "OVERFLOW" statement-list) + +(defrule not-on-overflow-statement-list + := "NOT" "ON"? "OVERFLOW" statement-list) + +(defrule write-statement + := "WRITE" record-name from-identifier? advancing-phrase? write-exceptions "END-WRITE"?) + +(defrule lines + := "LINE" + := "LINES") + +(defrule cobword-int + := cobol-identifier + := integer) + +(defrule nr-lines-phrase + := cobword-int lines?) + +(defrule page-phrase + := nr-lines-phrase + := "PAGE") + +(defrule alt-before-after + := "BEFORE" + := "AFTER") + +(defrule advancing-phrase + := alt-before-after "ADVANCING"? page-phrase) + +(defrule from-identifier + := "FROM" variable-identifier) + +(defrule invalid-key-statement-list + := "INVALID" "KEY"? statement-list + :reduce statement-list) + +(defrule not-invalid-key-statement-list + := "NOT" "INVALID" "KEY"? statement-list + :reduce statement-list) + +(defrule end-of-page + := "END-OF-PAGE" + := "EOP") + +(defrule at-end-of-page-statement-list + := "AT"? end-of-page statement-list + :reduce statement-list) + +(defrule not-at-end-of-page-statement-list + := "NOT" "AT"? end-of-page statement-list + :reduce statement-list) + +;; This is left in the grammar but is not used. COPYs are handled by +;; the lexical scanner. +(defrule copy-statement + := "COPY" alt-text-name-literal in-library? "SUPPRESS"? copy-statement-replacing-phrase?) + +(defrule in + := "OF" + := "IN") + +(defrule alt-library-name-literal + := library-name + := literal) + +(defrule in-library + := in alt-library-name-literal) + +(defrule copy-statement-by-phrase + := copy-operand "BY" copy-operand) + +(defrule copy-statement-replacing-phrase + := "REPLACING" copy-statement-by-phrase+) + +(defrule alt-text-name-literal + := text-name + := literal) + +(defrule copy-operand + := cobol-identifier + := literal) + +(defrule use-statement + := use-statement-1 + := use-statement-2 + := use-statement-3) + +(defrule use-statement-1 + := "USE" "GLOBAL"? "AFTER" "STANDARD"? alt-exception-error "PROCEDURE" "ON"? alt-file-names-i-o) + +(defrule alt-exception-error + := "EXCEPTION" + := "ERROR") + +(defrule use-statement-2 + := "USE" "GLOBAL"? "AFTER" "STANDARD"? alt-beginning-ending? alt-file-reel-unit? "LABEL" "PROCEDURE" "ON"? alt-file-names-i-o) + +(defrule alt-beginning-ending + := "BEGINNING" + := "ENDING") + +(defrule alt-file-reel-unit + := "FILE" + := "REEL" + := "UNIT") + +(defrule file-names + := file-name+) + +(defrule alt-file-names-i-o + := file-names + := "INPUT" + := "OUTPUT" + := "I-O" + := "EXTEND") + +(defrule use-statement-3 + := "USE" "FOR"? "DEBUGGING" "ON"? alt-procedures-all-procedures) + +(defrule procedure-names + := procedure-name+) + +(defrule alt-procedures-all-procedures + := procedure-names + := all-procedures) + +(defrule condition + := combinable-condition + := combinable-condition "AND" condition + :reduce `(and ,combinable-condition ,condition) + := combinable-condition "OR" condition + :reduce `(or ,combinable-condition ,condition) + := combinable-condition "AND" id-or-lit + :reduce `(and ,combinable-condition (,(car combinable-condition) ,(cadr combinable-condition) ,id-or-lit)) + := combinable-condition "OR" id-or-lit + :reduce `(or ,combinable-condition (,(car combinable-condition) ,(cadr combinable-condition) ,id-or-lit))) + +(defrule combinable-condition + := "NOT"? simple-condition + :reduce (if $1 + (list 'not simple-condition) + simple-condition)) + +(defrule simple-condition + := class-condition + := relation-condition + := sign-condition + := "(" condition ")" + ;; not sure if it's necessary -wcp15/7/03. + ;; := arithmetic-expression + ) + +(defrule class-condition + := variable-identifier "IS"? "NOT"? class-type + :reduce (if $3 + (list 'not (list 'type-of variable-identifier (make-keyword class-type))) + (list 'type-of variable-identifier (make-keyword class-type)))) + +(defrule class-type + := "NUMERIC" + := "ALPHABETIC" + := "ALPHABETIC-LOWER" + := "ALPHABETIC-UPPER" + := "DBCS") + +(defun unfold-subrelations (main-relation subs) + (destructuring-bind (main-operator main-variable other-variable) main-relation + (declare (ignore other-variable)) + (labels ((unfold (subs) + (if (null subs) + main-relation + (destructuring-bind (connection operator variable) (car subs) + (list connection + (list (or operator main-operator) main-variable variable) + (unfold (cdr subs))))))) + (unfold subs)))) + +(defrule relation-condition + ;; This is too complex + ;; := arithmetic-expression relational-operator simple-condition + := id-or-lit relational-operator id-or-lit subordinate-relation* + :reduce (unfold-subrelations (list relational-operator id-or-lit id-or-lit2) subordinate-relation)) + +(defrule or-and + := "OR" :reduce 'or + := "AND" :reduce 'and) + +(defrule subordinate-relation + := or-and relational-operator? id-or-lit + :reduce (list or-and relational-operator id-or-lit)) + +(defrule relational-operator + := "IS"? relational-operator-type + :reduce relational-operator-type) + +(defrule less-than + := "LESS" "THAN"? + := "<") + +(defrule greater-equal + := "GREATER" "THAN"? "OR" "EQUAL" "TO"? + := ">=" + := ">" "=" + := "NOT" "<" + := "NOT" "LESS" "THAN"?) + +(defrule less-equal + := "LESS" "THAN"? "OR" "EQUAL" "TO"? + := "<=" + := "<" "=" + := "NOT" ">" + := "NOT" "GREATER" "THAN"?) + +(defrule greater-than + := "GREATER" "THAN"? + := ">") + +(defrule equal-to + := "EQUAL" "TO"? + := "=") + +(defrule relational-operator-type + := greater-equal + :reduce 'cob>= + := less-equal + :reduce 'cob<= + := greater-than + :reduce 'cob> + := less-than + :reduce 'cob< + := equal-to + :reduce 'cob= + := "NOT" equal-to + :reduce 'cob-not=) + +(defrule sign-condition + := arithmetic-expression "IS"? "NOT"? sign-type + :reduce (if $3 + `(not (,sign-type ,arithmetic-expression)) + `(,sign-type ,arithmetic-expression))) + +(defrule sign-type + := "POSITIVE" :reduce '> + := "NEGATIVE" :reduce '< + := "ZERO" :reduce '= + := "ZEROES" :reduce '= + := "ZEROS" :reduce '=) + +(defrule procedure-name + := paragraph-or-section-name in-section-name + :reduce (list paragraph-or-section-name in-section-name) + := paragraph-or-section-name + :reduce paragraph-or-section-name) + +(defrule in-section-name + := in cobol-identifier + :reduce cobol-identifier) + +(defrule variable-identifier + := qualified-data-name subscript-parentheses* ;; reference-modification? + :reduce (if subscript-parentheses + (list :aref qualified-data-name subscript-parentheses) + qualified-data-name)) + +(defrule reference-modification + := "(" leftmost-character-position ":" length? ")" + :reduce (if length + (list :range leftmost-character-position length) + leftmost-character-position)) + +(defrule condition-name-reference + := condition-name in-data-or-file-or-mnemonic-name* subscript-parentheses*) + +(defrule in-data-or-file-or-mnemonic-name + := in data-or-file-or-mnemonic-name) + +(defrule subscript-parentheses + := "(" subscript ")") + +(defrule subscript + := subscript-expression+) + +(defrule plus-minus-integer + := plus-or-minus integer) + +(defrule subscript-expression-ambiguous + := qualified-data-name plus-minus-integer?) + +(defrule subscript-expression + := literal + := subscript-expression-ambiguous) + +(defrule qualified-data-name + := data-name in-data-or-file-name* + :reduce (if in-data-or-file-name + (list data-name in-data-or-file-name) ; incomplete -wcp15/7/03. + data-name) + := "ADDRESS" "OF" data-name + :reduce (list 'address-of data-name) + := "LENGTH" "OF" cobol-identifier + :reduce (list 'length-of cobol-identifier)) + +(defrule in-data-or-file-name + := in data-or-file-name) + +(defrule leftmost-character-position + := arithmetic-expression) + +(defrule length + := arithmetic-expression) + +(defrule arithmetic-expression + := times-div + := times-div "+" arithmetic-expression + :reduce `(+ ,times-div ,arithmetic-expression) + := times-div "-" arithmetic-expression + :reduce `(- ,times-div ,arithmetic-expression)) + +(defrule times-div + := power + := power "*" times-div + :reduce `(* ,power ,times-div) + := power "/" times-div + :reduce `(/ ,power ,times-div)) + +(defrule power + := plus-or-minus? basis + := plus-or-minus? basis "**" power + :reduce (if plus-or-minus + `(plus-or-minus (expt basis basis2)) + `(expt basis basis2))) + +(defrule plus-or-minus + := "+" + :reduce '+ + := "-" + :reduce '-) + +;; (defrule power-tail +;; := "**" basis) + +(defrule basis + := literal + := variable-identifier + := "(" arithmetic-expression ")") + +(defrule alphabet-name + := cobol-identifier) + +(defrule condition-name + := cobol-identifier) + +(defrule data-name + := cobol-identifier) + +(defrule cobol-identifier + := identifier + :reduce (intern (string-upcase identifier))) + +(defrule file-name + := cobol-identifier) + +(defrule data-or-file-name + := cobol-identifier) + +(defrule index-name + := cobol-identifier) + +(defrule mnemonic-name + := cobol-identifier) + +(defrule data-or-file-or-mnemonic-name + := cobol-identifier) + +(defrule record-name + := qualified-data-name) + +(defrule symbolic-character + := cobol-identifier) + +(defrule library-name + := cobol-identifier) + +(defrule program-name + := cobol-identifier + := string) + +(defrule text-name + := cobol-identifier) + +(defrule paragraph-or-section-name + := cobol-identifier + := integer) + +(defrule computer-name + := identifier) + +(defrule environment-name + := cobol-identifier) + +(defrule assignment-name + := cobol-identifier) + +(defrule figurative-constant + := figurative-constant-simple + := figurative-constant-all) + +(defrule figurative-constant-all + := "ALL" literal) + +(defrule literal + := string + := float + := integer + := figurative-constant) + +) ; defun populate-grammar |