Package com.ohrasys.cad.gds

Provides a set of objects that can be used to import, create and export GDSII database records.

See:
Description

Class Summary

GDSAccessControl	Represents an access control specifier.
GDSAngleRecord	Represents GDSII ANGLE record.
GDSArefRecord	Represents a GDSII AREF record.
GDSAttrtableRecord	Represents a GDSII ATTRTABLE record.
GDSBgnextnRecord	Represents a GDSII BGNEXTN record.
GDSBgnlibRecord	Represents a GDSII BGNLIB record.
GDSBgnstrRecord	Represents a GDSII BGNSTR record.
GDSBorderRecord	Represents a GDSII BORDER record.
GDSBoundaryRecord	Represents a GDSII Boundary record.
GDSBoxRecord	Represents a GDSII BOX record.
GDSBoxtypeRecord	Represents a GDSII BOXTYPE record.
GDSByteConverter	A utility to convert byte arrays into java types and vice versa.
GDSColrowRecord	Represents a GDSII COLROW record.
GDSContactRecord	Represents a GDSII CONTACT record.
GDSDatatypeRecord	Represents a GDSII DATATYPE record.
GDSElflagsRecord	Represents a GDSII ELFLAGS record.
GDSElkeyRecord	Represents a GDSII ELKEY record.
GDSEndelRecord	Represents a GDSII ENDEL record.
GDSEndextnRecord	Represents a GDSII ENDEXTN record.
GDSEndlibRecord	Represents a GDSII ENDLIB record.
GDSEndmasksRecord	Represents a GDSII ENDMASKS record.
GDSEndstrRecord	Represents a GDSII ENDSTR record.
GDSFontsRecord	Represents a GDSII FONTS record.
GDSFormatRecord	Represents a GDSII FORMAT record.
GDSGenerationsRecord	Represents a GDSII GENERATIONS record.
GDSHardfenceRecord	Represents a GDSII HARDFENCE record.
GDSHardwireRecord	Represents a GDSII HARDWIRE record.
GDSHeaderRecord	Represents a GDSII HEADER record.
GDSInputStream	The GDSInputStream is used to read GDSRecord from a data source.
GDSLayerRecord	Represents a GDSII LAYER record.
GDSLibdirsizeRecord	Represents a GDSII LIBDIRSIZE record.
GDSLibnameRecord	Represents a GDSII LIBNAME record.
GDSLibsecurRecord	Represents a GDSII LIBSECUR record.
GDSLinkkeysRecord	Represents a GDSII LINKKEYS record.
GDSLinktypeRecord	Represents a GDSII LINKTYPE record.
GDSMagRecord	Represents a GDSII MAG record.
GDSMaskRecord	Represents a GDSII MASK record.
GDSNodeportRecord	Represents a GDSII NODEPORT record.
GDSNodeRecord	Represents a GDSII NODE record.
GDSNodetypeRecord	Represents a GDSII NODETYPE record.
GDSNullRecord	Represents a GDSII null word.
GDSOutputStream	The GDSOutputStream is used to write GDSRecords to a data source.
GDSParser	A GDS design parser.
GDSPathportRecord	Represets a GDSII PATHPORT record.
GDSPathRecord	Represents a GDSII PATH record.
GDSPathtypeRecord	Represents a GDSII PATHTYPE record.
GDSPlexRecord	Represents a GDSII PLEX record.
GDSPresentationRecord	Represents a GDSII PRESENTATION record.
GDSPropattrRecord	Represents a GDSII PROPATTR record.
GDSPropvalueRecord	Represents a GDSII PROPVALUE record.
GDSReader	A basic GDS file reader
GDSRecord	This class represents a generic GDSII stream record.
GDSRecordFactory	Create a specific GDSII record based on the record type of the GDSRecord argument.
GDSReflibsRecord	Represents a GDSII REFLIBS record.
GDSReservedRecord	Represents a GDSII RESERVED record.
GDSSnameRecord	Represents a GDSII SNAME record.
GDSSoftfenceRecord	Represents a GDSII SOFTFENCE record.
GDSSoftwireRecord	Represents a GDSII SOFTWIRE record.
GDSSpacererrorRecord	Represents a GDSII SPACERERROR record.
GDSSpacingRecord	Represents a GDSII SPACING record.
GDSSpecificDataConverter	Converts java floating point and string types to the corresponding GDSII types.
GDSSrefRecord	Represents a GDSII SREF record.
GDSSrfnameRecord	Represents a GDSII SRFNAME record.
GDSStatistics	Records statistics for a GDSII database.
GDSStransRecord	Represents a GDSII STRANS record.
GDSStrclassRecord	Represents a GDSII STRCLASS record.
GDSStringRecord	Represents a GDSII STRING record.
GDSStringUtil	String utility class.
GDSStrnameRecord	Represents a GDSII STRNAME record.
GDSStrtypeRecord	Represents a GDSII STRTYPE record.
GDSStyptableRecord	Represents a GDSII STYPTABLE record.
GDSTapecodeRecord	Represents a GDSII TAPECODE record.
GDSTapenumRecord	Represents a GDSII TAPENUM record.
GDSTextnodeRecord	Represents a GDSII TEXTNODE record.
GDSTextRecord	Represents a GDSII TEXT record.
GDSTexttypeRecord	Represents a GDSII TEXTTYPE record.
GDSUintegerRecord	Represents a GDSII UNINTEGER record.
GDSUnitsRecord	Represents a GDSII UNITS record.
GDSUserconstraintRecord	Represents a GDSII USERCONSTRAINT record.
GDSUstringRecord	Represents a GDSII USTRING record.
GDSWidthRecord	Represents a GDSII WIDTH record.
GDSXyRecord	Represents a GDSII XY record.

Exception Summary

GDSParserException	Used to identify exceptions in the GDSParser object.
GDSReaderException	An exception object for the GDSReader
GDSRecordException	Thrown if an error in GDS record processing occurs.

Package com.ohrasys.cad.gds Description

Provides a set of objects that can be used to import, create and export GDSII database records. GDSII is the primary format used to transfer physical data representing circuit layout generated from EDA/CAD tools . The GDSII stream format is originally based on the CALMA format which is now obsolete. Below is a Bachus Naur representation of the GDSII stream syntax.

      <stream>     :: 
        HEADER BGNLIB [LIBDIRSIZE] [SRFNAME] [LIBSECUR]
        LIBNAME [REFLIBS] [FONTS] [ATTRTABLE]
        [GENERATIONS] [<formattype>] UNITS {<structure>}*
        ENDLIB

      <formattype> :: 
        FORMAT | FORMAT {MASK}+ ENDMASKS

      <structure>  :: 
        BGNSTR STRNAME [STRCLASS] {<element>}* ENDSTR

      <element>  :: 
        {<boundary> | <path> | <sref> | <aref> | 
         <text> | <node> | <box>} {<property>}*

      <boundary>  :: 
        BOUNDARY [ELFLAGS] [PLEX] LAYER DATATYPE XY
      
      <path>  :: 
        PATH  [ELFLAGS] [PLEX] LAYER DATATYPE [PATHTYPE] [WIDTH] [BGNEXTN]
        [ENDEXTN] XY

      <sref>  :: 
        SREF [ELFLAGS] [PLEX] SNAME [<strans>] XY

      <aref>  :: 
        AREF [ELFLAGS] [PLEX] SNAME [<strans>] COLROW XY

      <text>  :: 
        TEXT [ELFLAGS] [PLEX] LAYER <textbody>

      <node>  :: 
        NODE [ELFLAGS] [PLEX] LAYER NODETYPE XY

      <box>  :: 
        BOX [ELFLAGS] [PLEX] LAYER BOXTYPE XY

      <textbody>  :: 
        TEXTTYPE [PRESENTATION] [PATHTYPE] [WIDTH] [<strans>] XY STRING

      <strans>  :: 
        STRANS [MAG] [ANGLE]

      <property>  :: 
        PROPATTR PROPVALUE
    

Please see The GDSII techincal reference for a more complete discussion of the GDSII stream syntax.