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74 lines
2.9 KiB
Fortran
74 lines
2.9 KiB
Fortran
C***********************************************************************
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C
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C GETTOK.FOR
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C
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C
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C D I S C L A I M E R N O T I C E
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C ------------------- -----------
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C
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C This document and/or portions of the material and data furnished
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C herewith, was developed under sponsorship of the U. S. Government.
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C Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
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C University, nor their employees, nor their respective contractors,
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C subcontractors, or their employees, makes any warranty, express or
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C implied, or assumes any liability or responsibility for accuracy,
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C completeness or usefulness of any information, apparatus, product
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C or process disclosed, or represents that its use will not infringe
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C privately-owned rights. Mention of any product, its manufacturer,
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C or suppliers shall not, nor is it intended to, imply approval, dis-
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C approval, or fitness for any particular use. The U. S. and the
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C University at all times retain the right to use and disseminate same
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C for any purpose whatsoever. Such distribution shall be made by the
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C National Energy Software Center at the Argonne National Laboratory
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C and only subject to the distributee furnishing satisfactory proof
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C that he has a valid license from the Intel Corporation in effect.
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C
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C
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C-----------------------------------------------------------------------
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C
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C This module of the PL/M-VAX compiler contains the token analysis
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C routine which is called to obtain the next token from the input
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C stream. The token analyzer looks ahead one lexical element to
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C determine if the next token is a label, and if so stores the
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C label in the current label list. This list must be emptied
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C before the next token is obtained, or an error will be diagnosed.
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C
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C-----------------------------------------------------------------------
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C R E V I S I O N H I S T O R Y
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C
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C 15OCT81 Alex Hunter 1. Added disclaimer notice. (V5.4)
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C 14JAN82 Alex Hunter 1. Treat <keyword>: as <identifier>:. (V6.5)
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C
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C-----------------------------------------------------------------------
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SUBROUTINE GETTOK
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INCLUDE 'PLMCOM.FOR/NOLIST'
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C
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DO 5 I=1,NLABELS
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CALL ERROR('MISPLACED LABEL -- '//LABELS(I))
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5 CONTINUE
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NLABELS=0
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10 TOKENTYPE=NEXT_TOKENTYPE
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DELIMITER=NEXT_DELIMITER
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IDENTIFIER=NEXT_IDENTIFIER
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STRING=NEXT_STRING
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STRLEN=NEXT_STRLEN
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FIXVAL=NEXT_FIXVAL
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FLOATVAL=NEXT_FLOATVAL
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CALL GETLEX
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IF (NEXT_TOKENTYPE.EQ.D_COLON .AND.
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# (TOKENTYPE.EQ.ID.OR.(TOKENTYPE.GE.101.AND.TOKENTYPE.LE.199)))
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#THEN
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IF (NLABELS.GE.MAX_LABELS) THEN
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CALL ERROR('TOO MANY LABELS -- '//IDENTIFIER)
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ELSE
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NLABELS=NLABELS+1
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LABELS(NLABELS) = IDENTIFIER
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ENDIF
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CALL GETLEX
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GO TO 10
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ENDIF
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RETURN
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END
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