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Annotation of 43BSD/contrib/icon/man/cat2/image.2, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: 
        !             4: IMAGE(2)              Icon Program Library               IMAGE(2)
        !             5: 
        !             6: 
        !             7: 
        !             8: NNNNAAAAMMMMEEEE
        !             9:      Image - generalized string image of Icon value
        !            10: 
        !            11: SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
        !            12:      IIIImmmmaaaaggggeeee((((xxxx))))
        !            13:      IIIImmmmaaaaggggeeeexxxx((((xxxx))))
        !            14: 
        !            15: DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
        !            16:      The procedure IIIImmmmaaaaggggeeee((((xxxx)))) produces a string image of the value
        !            17:      xxxx. The value produced is a generalization of the value pro-
        !            18:      duced by the Icon function iiiimmmmaaaaggggeeee((((xxxx)))), providing detailed
        !            19:      information about structures.
        !            20: 
        !            21:      Tags are used to uniquely identify structures. A tag con-
        !            22:      sists of a letter identifying the type followed by an
        !            23:      integer. The tag letters are LLLL for lists, RRRR for records, and
        !            24:      TTTT for tables. The first time a structure is encountered, it
        !            25:      is imaged as the tag followed by a colon, followed by a
        !            26:      representation of the structure. If the same structure is
        !            27:      encountered again, only the tag is given.
        !            28: 
        !            29:      An example is
        !            30: 
        !            31:           a := ["x"]
        !            32:           push(a,a)
        !            33:           t := table()
        !            34:           push(a,t)
        !            35:           t[a] := t
        !            36:           t["x"] := []
        !            37:           t[t] := a
        !            38:           write(Image(t))
        !            39: 
        !            40:      which produces
        !            41: 
        !            42:           T1:["x"->L1:[],L2:[T1,L2,"x"]->T1,T1->L2]
        !            43: 
        !            44:      Note that a table is represented as a list of entry and
        !            45:      assigned values separated by ---->>>>s.
        !            46: 
        !            47:      The procedure IIIImmmmaaaaggggeeeexxxx((((xxxx)))) is similar to IIIImmmmaaaaggggeeee((((xxxx)))), except that
        !            48:      newlines and spaces are inserted to that the printed result
        !            49:      is displayed on multiple lines with indentation. There are
        !            50:      other formatting details that differ between the two pro-
        !            51:      cedures.  For the example given above, the result of
        !            52: 
        !            53:           write(Imagex(t))
        !            54: 
        !            55:      is
        !            56: 
        !            57:           T1:{
        !            58:              "x"
        !            59:              ---
        !            60: 
        !            61: 
        !            62: 
        !            63: Version 5.9    The University of Arizona - 6/28/83              1
        !            64: 
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        !            68: 
        !            69: 
        !            70: IMAGE(2)              Icon Program Library               IMAGE(2)
        !            71: 
        !            72: 
        !            73: 
        !            74:           L1:[]
        !            75:              ]
        !            76:           ------
        !            77:           L2:[
        !            78:              T1
        !            79:              L2
        !            80:              "x"
        !            81:              ]
        !            82:           ---
        !            83:           T1
        !            84:           ------
        !            85:           T1
        !            86:           ---
        !            87:           L2
        !            88:           ------
        !            89:           ]
        !            90: 
        !            91: 
        !            92: AAAAUUUUTTTTHHHHOOOORRRR
        !            93:      Ralph E. Griswold
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        !           129: Version 5.9    The University of Arizona - 6/28/83              2
        !           130: 
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