blob: e38d10117d5254a7bb2010a406a8a8c84f1d5d86 (
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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
(ns lux.analyser.lux
(:require (clojure [template :refer [do-template]])
[clojure.core.match :as M :refer [matchv]]
clojure.core.match.array
(lux [base :as & :refer [exec return return* fail fail* |let |list]]
[parser :as &parser]
[type :as &type]
[macro :as ¯o]
[host :as &host])
(lux.analyser [base :as &&]
[lambda :as &&lambda]
[case :as &&case]
[env :as &&env]
[def :as &&def])))
(defn ^:private analyse-1+ [analyse]
(fn [?token]
(&&/with-var #(&&/analyse-1 analyse % ?token))))
;; [Exports]
(defn analyse-tuple [analyse exo-type ?elems]
(exec [=elems (&/map% (analyse-1+ analyse) ?elems)
=elems-types (&/map% &&/expr-type =elems)
;; :let [_ (prn 'analyse-tuple =elems)]
:let [endo-type (&/V "lux;TupleT" =elems-types)]
_ (&type/solve exo-type endo-type)
;; :let [_ (prn 'analyse-tuple 'DONE)]
]
(return (&/|list (&/V "Expression" (&/T (&/V "tuple" =elems)
exo-type))))))
(defn analyse-variant [analyse exo-type ident ?value]
(|let [[?module ?name] ident
?tag (str ?module ";" ?name)]
(exec [=value ((analyse-1+ analyse) ?value)
=value-type (&&/expr-type =value)
:let [endo-type (&/V "lux;VariantT" (|list (&/T ?tag =value-type)))]
_ (&type/solve exo-type endo-type)
;; :let [_ (prn 'analyse-variant 'DONE)]
]
(return (&/|list (&/V "Expression" (&/T (&/V "variant" (&/T ?tag =value))
exo-type)))))))
(defn analyse-record [analyse exo-type ?elems]
(exec [=elems (&/map% (fn [kv]
(matchv ::M/objects [kv]
[[k v]]
(exec [=v (&&/analyse-1 analyse v)]
(return (to-array [k =v])))))
?elems)
=elems-types (&/map% (fn [kv]
(matchv ::M/objects [kv]
[[k v]]
(exec [=v (&&/expr-type v)]
(return (to-array [k =v])))))
=elems)
;; :let [_ (prn 'analyse-tuple =elems)]
]
(return (&/|list (&/V "Expression" (&/T (&/V "lux;record" =elems) (&/V "lux;RecordT" =elems-types)))))))
(defn analyse-symbol [analyse exo-type ident]
(|let [[?module ?name] ident]
(do ;; (prn 'analyse-ident ?module ?name)
(exec [module-name &/get-module-name]
(fn [state]
;; (when (and (= "lux" ?module)
;; (= "output" ?name))
;; (prn (&/show-state state)))
;; (prn 'module-name module-name)
;; (prn '(&/get$ "local-envs" state) (&/get$ "local-envs" state))
;; (prn '(&/->seq (&/get$ "local-envs" state)) (&/->seq (&/get$ "local-envs" state)))
;; (println (&/show-state state))
(|let [stack (&/get$ "lux;local-envs" state)
no-binding? #(and (->> % (&/get$ "lux;locals") (&/get$ "lux;mappings") (&/|contains? ?name) not)
(->> % (&/get$ "lux;closure") (&/get$ "lux;mappings") (&/|contains? ?name) not))
[inner outer] (&/|split-with no-binding? stack)]
(matchv ::M/objects [outer]
[["lux;Nil" _]]
(|let [[?module ?name] ident
ident* (str ?module ";" ?name)]
(if-let [global (->> state (&/get$ "lux;global-env") &/from-some (&/get$ "lux;locals") (&/get$ "lux;mappings") (&/|get ident*))]
(&/run-state (exec [=global-type (&&/expr-type global)
_ (&type/solve exo-type =global-type)]
(return (&/|list global)))
state)
(fail* (str "[Analyser Error] Unresolved identifier: " ident*))))
[["lux;Cons" [top-outer _]]]
(|let [scopes (&/|tail (&/folds #(&/|cons (&/get$ "lux;name" %2) %1)
(&/|map #(&/get$ "lux;name" %) outer)
(&/|reverse inner)))
;; _ (prn 'inner module-name ident (&/->seq (&/|map #(&/get$ "name" %) inner)) scopes)
[=local inner*] (&/fold (fn [register+new-inner frame+in-scope]
(|let [[register new-inner] register+new-inner
[frame in-scope] frame+in-scope
[register* frame*] (&&lambda/close-over (&/|cons module-name (&/|reverse in-scope)) ?name register frame)]
(&/T register* (&/|cons frame* new-inner))))
(&/T (or (->> top-outer (&/get$ "lux;locals") (&/get$ "lux;mappings") (&/|get ?name))
(->> top-outer (&/get$ "lux;closure") (&/get$ "lux;mappings") (&/|get ?name)))
(&/|list))
(&/zip2 (&/|reverse inner) scopes))]
(return* (&/set$ "lux;local-envs" (&/|++ inner* outer) state) (&/|list =local)))
)))
))))
(defn ^:private analyse-apply* [analyse exo-type =fn ?args]
(exec [=args (&/flat-map% analyse ?args)
=fn-type (&&/expr-type =fn)
[=apply _] (&/fold% (fn [[=fn =fn-type] =input]
(exec [;; :let [_ (prn "#2")]
=input-type (&&/expr-type =input)
;; :let [_ (prn "#3")]
=output-type (&type/apply-lambda =fn-type =input-type)
;; :let [_ (prn "#4")]
]
(return [(&/V "Expression" (&/T (&/V "apply" (&/T =fn =input))
=output-type))
=output-type])))
[=fn =fn-type]
=args)]
(return (&/|list =apply))))
(defn analyse-apply [analyse exo-type =fn ?args]
;; (prn 'analyse-apply1 (aget =fn 0))
(exec [loader &/loader]
(matchv ::M/objects [=fn]
[["Expression" [=fn-form =fn-type]]]
(do ;; (prn 'analyse-apply2 (aget =fn-form 0))
(matchv ::M/objects [=fn-form]
[["global" [?module ?name]]]
(exec [macro? (&&def/macro? ?module ?name)]
(if macro?
(let [macro-class (&host/location (&/|list ?module ?name))]
(exec [macro-expansion (¯o/expand loader macro-class ?args)
output (&/flat-map% analyse macro-expansion)]
(return output)))
(analyse-apply* analyse =fn ?args)))
[_]
(analyse-apply* analyse =fn ?args)))
[_]
(fail "[Analyser Error] Can't call a statement!"))
))
(defn analyse-case [analyse exo-type ?value ?branches]
;; (prn 'analyse-case (aget ?branches 0) (aget ?branches 1 1 0)
;; (&/->seq ?branches))
;; (prn 'analyse-case (&/show-ast ?value))
(exec [:let [num-branches (&/|length ?branches)
;; _ (prn 'analyse-case ?value (&/|length ?branches)
;; (and (> num-branches 0) (even? num-branches)))
]
_ (&/assert! (and (> num-branches 0) (even? num-branches))
"[Analyser Error] Unbalanced branches in \"case'\" expression.")
:let [branches (&/|as-pairs ?branches)
;; _ (prn '(&/|length branches) (&/|length branches))
locals-per-branch (&/|map (comp &&case/locals &/|first) branches)
max-locals (&/fold max 0 (&/|map &/|length locals-per-branch))]
;; :let [_ (prn '[branches locals-per-branch max-locals] [branches locals-per-branch max-locals])]
base-register &&env/next-local-idx
;; :let [_ (prn 'base-register base-register)]
=value (&&/analyse-1 analyse ?value)
;; :let [_ (prn '=value =value)]
=bodies (&/map% (partial &&case/analyse-branch analyse max-locals)
(&/zip2 locals-per-branch (&/|map &/|second branches)))
;; :let [_ (prn '=bodies =bodies)]
;; :let [_ (prn 'analyse-case/=bodies =bodies)]
=body-types (&/map% &&/expr-type =bodies)
:let [_ (prn 'analyse-case (->> =body-types (&/|map &type/show-type) (&/|interpose " ") (&/fold str "")))]
=case-type (&/fold% &type/merge (&/V "lux;NothingT" nil) =body-types)
:let [=branches (&/zip2 (&/|map &/|first branches) =bodies)]]
(return (&/|list (&/V "Expression" (&/T (&/V "case" (&/T =value base-register max-locals =branches))
=case-type))))))
(defn analyse-lambda [analyse exo-type ?self ?arg ?body]
;; (prn 'analyse-lambda ?self ?arg ?body)
(exec [=lambda-type* &type/fresh-lambda]
(matchv ::M/objects [=lambda-type*]
[["lux;LambdaT" [=arg =return]]]
(exec [[=scope =captured =body] (&&lambda/with-lambda ?self =lambda-type*
?arg =arg
(&&/analyse-1 analyse ?body))
=body-type (&&/expr-type =body)
;; _ =body-type
=lambda-type (exec [_ (&type/solve &type/init-fixpoints =return =body-type)]
(&type/clean =return =lambda-type*))
=bound-arg (&type/lookup =arg)
=lambda-type (matchv ::M/objects [=arg =bound-arg]
[["lux;VarT" id] ["lux;Some" bound]]
(&type/clean =arg =lambda-type)
[["lux;VarT" id] ["lux;None" _]]
(let [var-name (str (gensym ""))
bound (&/V "lux;BoundT" var-name)]
(exec [_ (&type/reset id bound)
lambda-type (&type/clean =arg =lambda-type)]
(return (&/V "lux;AllT" (&/T (&/|list) "" var-name lambda-type))))))
;; :let [_ (prn '=lambda-type =lambda-type)]
]
(return (&/|list (&/V "Expression" (&/T (&/V "lambda" (&/T =scope =captured ?arg =body)) =lambda-type))))))))
(defn analyse-def [analyse exo-type ?name ?value]
;; (prn 'analyse-def ?name ?value)
(exec [_ (&type/solve &type/Nothing exo-type)
module-name &/get-module-name]
(&/if% (&&def/defined? module-name ?name)
(fail (str "[Analyser Error] Can't redefine " ?name))
(exec [=value (&/with-scope ?name
(&&/with-var
#(&&/analyse-1 analyse % ?value)))
=value-type (&&/expr-type =value)
:let [_ (prn 'analyse-def ?name (&type/show-type =value-type))]
_ (&&def/define module-name ?name =value-type)]
(return (&/|list (&/V "Statement" (&/V "def" (&/T ?name =value)))))))))
(defn analyse-declare-macro [exo-type ident]
(|let [[?module ?name] ident]
(exec [module-name &/get-module-name]
(if (= ?module module-name)
(exec [_ (&&def/declare-macro ?module ?name)]
(return (&/|list)))
(fail "Can't declare macros from foreign modules.")))))
(defn analyse-import [analyse exo-type ?path]
(assert false)
(return (&/|list)))
(defn analyse-check [analyse eval! exo-type ?type ?value]
(println "analyse-check#0")
(exec [=type (&&/analyse-1 analyse &type/Type ?type)
:let [_ (println "analyse-check#1")]
==type (eval! =type)
_ (&type/solve &type/init-fixpoints exo-type ==type)
:let [_ (println "analyse-check#4" (&type/show-type ==type))]
=value (&&/analyse-1 analyse ==type ?value)
:let [_ (println "analyse-check#5")]]
(matchv ::M/objects [=value]
[["Expression" [?expr ?expr-type]]]
(exec [:let [_ (println "analyse-check#6" (&type/show-type ?expr-type))]
_ (&type/solve &type/init-fixpoints ==type ?expr-type)
:let [_ (println "analyse-check#7")]]
(return (&/|list (&/V "Expression" (&/T ?expr ==type))))))))
(defn analyse-coerce [analyse eval! exo-type ?type ?value]
(exec [=type (&&/analyse-1 analyse ?type)
=type-type (&&/expr-type =type)
_ (&type/solve &type/init-fixpoints &type/Type =type-type)
==type (eval! =type)
=value (&&/analyse-1 analyse ?value)]
(matchv ::M/objects [=value]
[["Expression" [?expr ?expr-type]]]
(return (&/|list (&/V "Expression" (&/T ?expr ==type)))))))
|
