aboutsummaryrefslogtreecommitdiff
path: root/new-luxc/source/luxc/lang/translation/r/eval.jvm.lux
blob: eb20d73c58d730a5caced48ed78d4ce883e9f007 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
(.module:
  lux
  (lux (control ["ex" exception #+ exception:]
                [monad #+ do])
       (data [bit]
             [maybe]
             ["e" error #+ Error]
             text/format
             (coll [array]))
       [host])
  (luxc [lang]
        (lang (host [r #+ Expression])))
  [//])

(do-template [<name>]
  [(exception: #export (<name> {message Text})
     message)]

  [Unknown-Kind-Of-Host-Object]
  [Null-Has-No-Lux-Representation]
  [Cannot-Evaluate]
  )

(host.import java/lang/Object
  (toString [] String)
  (getClass [] (Class Object)))

(host.import java/lang/Long
  (intValue [] Integer))

(host.import org/renjin/sexp/SEXP)

(host.import org/renjin/sexp/StringArrayVector
  (getElementAsString [int] String))

(host.import org/renjin/sexp/LogicalArrayVector
  (getElementAsRawLogical [int] int))

(host.import org/renjin/sexp/IntArrayVector
  (getElementAsInt [int] int))

(host.import org/renjin/sexp/DoubleArrayVector
  (getElementAsDouble [int] double))

(host.import org/renjin/sexp/ListVector
  (length [] int)
  (getElementAsSEXP [int] #try SEXP)
  (getElementAsSEXP #as get-field-sexp [String] #try SEXP))

(host.import org/renjin/sexp/Null) 

(def: (parse-tuple lux-object host-object)
  (-> (-> Object (Error Any)) ListVector (Error Any))
  (let [size (:coerce Nat (ListVector::length [] host-object))]
    (loop [idx +0
           output (:coerce (Array Any) (array.new size))]
      (if (n/< size idx)
        (case (ListVector::getElementAsSEXP [(:coerce Int idx)] host-object)
          (#e.Error error)
          (#e.Error error)
          
          (#e.Success value)
          (case (lux-object (:coerce Object value))
            (#e.Error error)
            (#e.Error error)

            (#e.Success lux-value)
            (recur (inc idx) (array.write idx (:coerce Any lux-value) output))))
        (#e.Success output)))))

(def: (parse-variant lux-object host-object)
  (-> (-> Object (Error Any)) ListVector (Error Any))
  (do e.Monad<Error>
    [tag (ListVector::get-field-sexp [//.variant-tag-field] host-object)
     flag (ListVector::get-field-sexp [//.variant-flag-field] host-object)
     value (ListVector::get-field-sexp [//.variant-value-field] host-object)
     value (lux-object (:coerce Object value))]
    (wrap [(|> tag
               (:coerce IntArrayVector)
               (IntArrayVector::getElementAsInt [0])
               (Long::intValue []))
           (: Any
              (if (host.instance? Null flag)
                (host.null)
                //.unit))
           value])))

(def: (parse-int host-object)
  (-> ListVector (Error Int))
  (do e.Monad<Error>
    [high (ListVector::get-field-sexp [//.int-high-field] host-object)
     low (ListVector::get-field-sexp [//.int-low-field] host-object)
     #let [get-int-32 (|>> (IntArrayVector::getElementAsInt [0]) (:coerce Nat))
           high (get-int-32 (:coerce IntArrayVector high))
           low (get-int-32 (:coerce IntArrayVector low))]]
    (wrap (:coerce Int
              (n/+ (|> high (bit.left-shift +32))
                   (if (i/< 0 (:coerce Int low))
                     (|> low (bit.left-shift +32) (bit.logical-right-shift +32))
                     low))))))

(def: (lux-object host-object)
  (-> Object (Error Any))
  (cond (host.instance? StringArrayVector host-object)
        (#e.Success (StringArrayVector::getElementAsString [0] (:coerce StringArrayVector host-object)))

        (host.instance? LogicalArrayVector host-object)
        (#e.Success (i/= 1 (LogicalArrayVector::getElementAsRawLogical [0] (:coerce LogicalArrayVector host-object))))

        (host.instance? IntArrayVector host-object)
        (#e.Success (IntArrayVector::getElementAsInt [0] (:coerce IntArrayVector host-object)))

        (host.instance? DoubleArrayVector host-object)
        (#e.Success (DoubleArrayVector::getElementAsDouble [0] (:coerce DoubleArrayVector host-object)))

        (host.instance? ListVector host-object)
        (case (parse-int (:coerce ListVector host-object))
          (#e.Error error)
          (case (parse-variant lux-object (:coerce ListVector host-object))
            (#e.Error error)
            (parse-tuple lux-object (:coerce ListVector host-object))

            output
            output)

          output
          output)

        ## else
        (let [object-class (:coerce Text (Object::toString [] (Object::getClass [] (:coerce Object host-object))))
              text-representation (:coerce Text (Object::toString [] (:coerce Object host-object)))]
          (ex.throw Unknown-Kind-Of-Host-Object (format object-class " --- " text-representation)))))

(def: #export (eval code)
  (-> Expression (Meta Any))
  (function (_ compiler)
    (let [interpreter (|> compiler (get@ #.host) (:coerce //.Host) (get@ #//.interpreter))]
      (case (interpreter code)
        (#e.Error error)
        (exec (log! (format "eval #e.Error\n"
                            "<< " (r.expression code) "\n"
                            error))
          ((lang.throw Cannot-Evaluate error) compiler))

        (#e.Success output)
        (case (lux-object output)
          (#e.Success parsed-output)
          (#e.Success [compiler parsed-output])

          (#e.Error error)
          (exec (log! (format "eval #e.Error\n"
                              "<< " (r.expression code) "\n"
                              error))
            ((lang.throw Cannot-Evaluate error) compiler)))))))