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|
(.module:
[lux #- char int]
(lux (control [monad #+ do]
["p" parser]
["ex" exception #+ exception:])
(data ["e" error]
[maybe]
[product]
[bool "bool/" Eq<Bool>]
[text "text/" Eq<Text>]
(text format
["l" lexer])
(coll [list "list/" Fold<List> Functor<List> Monoid<List>]
[array]
(dictionary ["dict" unordered #+ Dict])))
[macro "macro/" Monad<Meta>]
(macro [code]
["s" syntax])
[lang]
(lang [type]
(type ["tc" check]))
[host])
["/" //common]
(//// [".L" analysis #+ Analysis]
(analysis [".A" type]
[".A" inference]))
[///]
)
(host.import: #long java/lang/reflect/Type
(getTypeName [] String))
(def: jvm-type-name
(-> java/lang/reflect/Type Text)
(java/lang/reflect/Type::getTypeName []))
(exception: #export (jvm-type-is-not-a-class {jvm-type java/lang/reflect/Type})
(jvm-type-name jvm-type))
(do-template [<name>]
[(exception: #export (<name> {type Type})
(%type type))]
[non-object]
[non-array]
[non-jvm-type]
)
(do-template [<name>]
[(exception: #export (<name> {name Text})
name)]
[non-interface]
[non-throwable]
)
(do-template [<name>]
[(exception: #export (<name> {message Text})
message)]
[unknown-class]
[primitives-cannot-have-type-parameters]
[primitives-are-not-objects]
[invalid-type-for-array-element]
[unknown-field]
[mistaken-field-owner]
[not-a-virtual-field]
[not-a-static-field]
[cannot-set-a-final-field]
[cannot-cast]
[cannot-possibly-be-an-instance]
[cannot-convert-to-a-class]
[cannot-convert-to-a-parameter]
[cannot-convert-to-a-lux-type]
[unknown-type-var]
[type-parameter-mismatch]
[cannot-correspond-type-with-a-class]
)
(do-template [<name>]
[(exception: #export (<name> {class Text} {method Text} {hints (List [Type (List Type)])})
(ex.report ["Class" class]
["Method" method]
["Hints" (|> hints
(list/map (|>> %type (format "\n\t")))
(text.join-with ""))]))]
[no-candidates]
[too-many-candidates]
)
(do-template [<name> <class>]
[(def: #export <name> Type (#.Primitive <class> (list)))]
## Boxes
[Boolean "java.lang.Boolean"]
[Byte "java.lang.Byte"]
[Short "java.lang.Short"]
[Integer "java.lang.Integer"]
[Long "java.lang.Long"]
[Float "java.lang.Float"]
[Double "java.lang.Double"]
[Character "java.lang.Character"]
[String "java.lang.String"]
## Primitives
[boolean "boolean"]
[byte "byte"]
[short "short"]
[int "int"]
[long "long"]
[float "float"]
[double "double"]
[char "char"]
)
(def: conversion-procs
/.Bundle
(<| (/.prefix "convert")
(|> (dict.new text.Hash<Text>)
(/.install "double-to-float" (/.unary Double Float))
(/.install "double-to-int" (/.unary Double Integer))
(/.install "double-to-long" (/.unary Double Long))
(/.install "float-to-double" (/.unary Float Double))
(/.install "float-to-int" (/.unary Float Integer))
(/.install "float-to-long" (/.unary Float Long))
(/.install "int-to-byte" (/.unary Integer Byte))
(/.install "int-to-char" (/.unary Integer Character))
(/.install "int-to-double" (/.unary Integer Double))
(/.install "int-to-float" (/.unary Integer Float))
(/.install "int-to-long" (/.unary Integer Long))
(/.install "int-to-short" (/.unary Integer Short))
(/.install "long-to-double" (/.unary Long Double))
(/.install "long-to-float" (/.unary Long Float))
(/.install "long-to-int" (/.unary Long Integer))
(/.install "long-to-short" (/.unary Long Short))
(/.install "long-to-byte" (/.unary Long Byte))
(/.install "char-to-byte" (/.unary Character Byte))
(/.install "char-to-short" (/.unary Character Short))
(/.install "char-to-int" (/.unary Character Integer))
(/.install "char-to-long" (/.unary Character Long))
(/.install "byte-to-long" (/.unary Byte Long))
(/.install "short-to-long" (/.unary Short Long))
)))
(do-template [<name> <prefix> <type>]
[(def: <name>
/.Bundle
(<| (/.prefix <prefix>)
(|> (dict.new text.Hash<Text>)
(/.install "+" (/.binary <type> <type> <type>))
(/.install "-" (/.binary <type> <type> <type>))
(/.install "*" (/.binary <type> <type> <type>))
(/.install "/" (/.binary <type> <type> <type>))
(/.install "%" (/.binary <type> <type> <type>))
(/.install "=" (/.binary <type> <type> Boolean))
(/.install "<" (/.binary <type> <type> Boolean))
(/.install "and" (/.binary <type> <type> <type>))
(/.install "or" (/.binary <type> <type> <type>))
(/.install "xor" (/.binary <type> <type> <type>))
(/.install "shl" (/.binary <type> Integer <type>))
(/.install "shr" (/.binary <type> Integer <type>))
(/.install "ushr" (/.binary <type> Integer <type>))
)))]
[int-procs "int" Integer]
[long-procs "long" Long]
)
(do-template [<name> <prefix> <type>]
[(def: <name>
/.Bundle
(<| (/.prefix <prefix>)
(|> (dict.new text.Hash<Text>)
(/.install "+" (/.binary <type> <type> <type>))
(/.install "-" (/.binary <type> <type> <type>))
(/.install "*" (/.binary <type> <type> <type>))
(/.install "/" (/.binary <type> <type> <type>))
(/.install "%" (/.binary <type> <type> <type>))
(/.install "=" (/.binary <type> <type> Boolean))
(/.install "<" (/.binary <type> <type> Boolean))
)))]
[float-procs "float" Float]
[double-procs "double" Double]
)
(def: char-procs
/.Bundle
(<| (/.prefix "char")
(|> (dict.new text.Hash<Text>)
(/.install "=" (/.binary Character Character Boolean))
(/.install "<" (/.binary Character Character Boolean))
)))
(def: #export boxes
(Dict Text Text)
(|> (list ["boolean" "java.lang.Boolean"]
["byte" "java.lang.Byte"]
["short" "java.lang.Short"]
["int" "java.lang.Integer"]
["long" "java.lang.Long"]
["float" "java.lang.Float"]
["double" "java.lang.Double"]
["char" "java.lang.Character"])
(dict.from-list text.Hash<Text>)))
(def: (array//length proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list arrayC))
(do macro.Monad<Meta>
[_ (typeA.infer Nat)
[var-id varT] (typeA.with-env tc.var)
arrayA (typeA.with-type (type (Array varT))
(analyse arrayC))]
(wrap (#analysisL.Extension proc (list arrayA))))
_
(lang.throw /.incorrect-extension-arity [proc +1 (list.size args)]))))
(def: (array//new proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list lengthC))
(do macro.Monad<Meta>
[lengthA (typeA.with-type Nat
(analyse lengthC))
expectedT macro.expected-type
[level elem-class] (: (Meta [Nat Text])
(loop [analysisT expectedT
level +0]
(case analysisT
(#.Apply inputT funcT)
(case (type.apply (list inputT) funcT)
(#.Some outputT)
(recur outputT level)
#.None
(lang.throw non-array expectedT))
(^ (#.Primitive "#Array" (list elemT)))
(recur elemT (inc level))
(#.Primitive class _)
(wrap [level class])
_
(lang.throw non-array expectedT))))
_ (if (n/> +0 level)
(wrap [])
(lang.throw non-array expectedT))]
(wrap (#analysisL.Extension proc (list (analysisL.nat (dec level))
(analysisL.text elem-class)
lengthA))))
_
(lang.throw /.incorrect-extension-arity [proc +1 (list.size args)]))))
(def: (check-jvm objectT)
(-> Type (Meta Text))
(case objectT
(#.Primitive name _)
(macro/wrap name)
(#.Named name unnamed)
(check-jvm unnamed)
(#.Var id)
(macro/wrap "java.lang.Object")
(^template [<tag>]
(<tag> env unquantified)
(check-jvm unquantified))
([#.UnivQ]
[#.ExQ])
(#.Apply inputT funcT)
(case (type.apply (list inputT) funcT)
(#.Some outputT)
(check-jvm outputT)
#.None
(lang.throw non-object objectT))
_
(lang.throw non-object objectT)))
(def: (check-object objectT)
(-> Type (Meta Text))
(do macro.Monad<Meta>
[name (check-jvm objectT)]
(if (dict.contains? name boxes)
(lang.throw primitives-are-not-objects name)
(macro/wrap name))))
(def: (box-array-element-type elemT)
(-> Type (Meta [Type Text]))
(case elemT
(#.Primitive name #.Nil)
(let [boxed-name (|> (dict.get name boxes)
(maybe.default name))]
(macro/wrap [(#.Primitive boxed-name #.Nil)
boxed-name]))
(#.Primitive name _)
(if (dict.contains? name boxes)
(lang.throw primitives-cannot-have-type-parameters name)
(macro/wrap [elemT name]))
_
(lang.throw invalid-type-for-array-element (%type elemT))))
(def: (array//read proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list arrayC idxC))
(do macro.Monad<Meta>
[[var-id varT] (typeA.with-env tc.var)
_ (typeA.infer varT)
arrayA (typeA.with-type (type (Array varT))
(analyse arrayC))
?elemT (typeA.with-env
(tc.read var-id))
[elemT elem-class] (box-array-element-type (maybe.default varT ?elemT))
idxA (typeA.with-type Nat
(analyse idxC))]
(wrap (#analysisL.Extension proc (list (analysisL.text elem-class) idxA arrayA))))
_
(lang.throw /.incorrect-extension-arity [proc +2 (list.size args)]))))
(def: (array//write proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list arrayC idxC valueC))
(do macro.Monad<Meta>
[[var-id varT] (typeA.with-env tc.var)
_ (typeA.infer (type (Array varT)))
arrayA (typeA.with-type (type (Array varT))
(analyse arrayC))
?elemT (typeA.with-env
(tc.read var-id))
[valueT elem-class] (box-array-element-type (maybe.default varT ?elemT))
idxA (typeA.with-type Nat
(analyse idxC))
valueA (typeA.with-type valueT
(analyse valueC))]
(wrap (#analysisL.Extension proc (list (analysisL.text elem-class) idxA valueA arrayA))))
_
(lang.throw /.incorrect-extension-arity [proc +3 (list.size args)]))))
(def: array-procs
/.Bundle
(<| (/.prefix "array")
(|> (dict.new text.Hash<Text>)
(/.install "length" array//length)
(/.install "new" array//new)
(/.install "read" array//read)
(/.install "write" array//write)
)))
(def: (object//null proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list))
(do macro.Monad<Meta>
[expectedT macro.expected-type
_ (check-object expectedT)]
(wrap (#analysisL.Extension proc (list))))
_
(lang.throw /.incorrect-extension-arity [proc +0 (list.size args)]))))
(def: (object//null? proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list objectC))
(do macro.Monad<Meta>
[_ (typeA.infer Bool)
[objectT objectA] (typeA.with-inference
(analyse objectC))
_ (check-object objectT)]
(wrap (#analysisL.Extension proc (list objectA))))
_
(lang.throw /.incorrect-extension-arity [proc +1 (list.size args)]))))
(def: (object//synchronized proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list monitorC exprC))
(do macro.Monad<Meta>
[[monitorT monitorA] (typeA.with-inference
(analyse monitorC))
_ (check-object monitorT)
exprA (analyse exprC)]
(wrap (#analysisL.Extension proc (list monitorA exprA))))
_
(lang.throw /.incorrect-extension-arity [proc +2 (list.size args)]))))
(host.import: java/lang/Object
(equals [Object] boolean))
(host.import: java/lang/ClassLoader)
(host.import: java/lang/reflect/GenericArrayType
(getGenericComponentType [] java/lang/reflect/Type))
(host.import: java/lang/reflect/ParameterizedType
(getRawType [] java/lang/reflect/Type)
(getActualTypeArguments [] (Array java/lang/reflect/Type)))
(host.import: (java/lang/reflect/TypeVariable d)
(getName [] String)
(getBounds [] (Array java/lang/reflect/Type)))
(host.import: (java/lang/reflect/WildcardType d)
(getLowerBounds [] (Array java/lang/reflect/Type))
(getUpperBounds [] (Array java/lang/reflect/Type)))
(host.import: java/lang/reflect/Modifier
(#static isStatic [int] boolean)
(#static isFinal [int] boolean)
(#static isInterface [int] boolean)
(#static isAbstract [int] boolean))
(host.import: java/lang/reflect/Field
(getDeclaringClass [] (java/lang/Class Object))
(getModifiers [] int)
(getGenericType [] java/lang/reflect/Type))
(host.import: java/lang/reflect/Method
(getName [] String)
(getModifiers [] int)
(getDeclaringClass [] (Class Object))
(getTypeParameters [] (Array (TypeVariable Method)))
(getGenericParameterTypes [] (Array java/lang/reflect/Type))
(getGenericReturnType [] java/lang/reflect/Type)
(getGenericExceptionTypes [] (Array java/lang/reflect/Type)))
(host.import: (java/lang/reflect/Constructor c)
(getModifiers [] int)
(getDeclaringClass [] (Class c))
(getTypeParameters [] (Array (TypeVariable (Constructor c))))
(getGenericParameterTypes [] (Array java/lang/reflect/Type))
(getGenericExceptionTypes [] (Array java/lang/reflect/Type)))
(host.import: (java/lang/Class c)
(getName [] String)
(getModifiers [] int)
(#static forName [String] #try (Class Object))
(isAssignableFrom [(Class Object)] boolean)
(getTypeParameters [] (Array (TypeVariable (Class c))))
(getGenericInterfaces [] (Array java/lang/reflect/Type))
(getGenericSuperclass [] java/lang/reflect/Type)
(getDeclaredField [String] #try Field)
(getConstructors [] (Array (Constructor Object)))
(getDeclaredMethods [] (Array Method)))
(def: (load-class name)
(-> Text (Meta (Class Object)))
(do macro.Monad<Meta>
[]
(case (Class::forName [name])
(#e.Success [class])
(wrap class)
(#e.Error error)
(lang.throw unknown-class name))))
(def: (sub-class? super sub)
(-> Text Text (Meta Bool))
(do macro.Monad<Meta>
[super (load-class super)
sub (load-class sub)]
(wrap (Class::isAssignableFrom [sub] super))))
(def: (object//throw proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list exceptionC))
(do macro.Monad<Meta>
[_ (typeA.infer Nothing)
[exceptionT exceptionA] (typeA.with-inference
(analyse exceptionC))
exception-class (check-object exceptionT)
? (sub-class? "java.lang.Throwable" exception-class)
_ (: (Meta Any)
(if ?
(wrap [])
(lang.throw non-throwable exception-class)))]
(wrap (#analysisL.Extension proc (list exceptionA))))
_
(lang.throw /.incorrect-extension-arity [proc +1 (list.size args)]))))
(def: (object//class proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list classC))
(case classC
[_ (#.Text class)]
(do macro.Monad<Meta>
[_ (typeA.infer (#.Primitive "java.lang.Class" (list (#.Primitive class (list)))))
_ (load-class class)]
(wrap (#analysisL.Extension proc (list (analysisL.text class)))))
_
(lang.throw /.invalid-syntax [proc args]))
_
(lang.throw /.incorrect-extension-arity [proc +1 (list.size args)]))))
(def: (object//instance? proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list classC objectC))
(case classC
[_ (#.Text class)]
(do macro.Monad<Meta>
[_ (typeA.infer Bool)
[objectT objectA] (typeA.with-inference
(analyse objectC))
object-class (check-object objectT)
? (sub-class? class object-class)]
(if ?
(wrap (#analysisL.Extension proc (list (analysisL.text class))))
(lang.throw cannot-possibly-be-an-instance (format object-class " !<= " class))))
_
(lang.throw /.invalid-syntax [proc args]))
_
(lang.throw /.incorrect-extension-arity [proc +2 (list.size args)]))))
(def: (java-type-to-class type)
(-> java/lang/reflect/Type (Meta Text))
(cond (host.instance? Class type)
(macro/wrap (Class::getName [] (:coerce Class type)))
(host.instance? ParameterizedType type)
(java-type-to-class (ParameterizedType::getRawType [] (:coerce ParameterizedType type)))
## else
(lang.throw cannot-convert-to-a-class (jvm-type-name type))))
(type: Mappings
(Dict Text Type))
(def: fresh-mappings Mappings (dict.new text.Hash<Text>))
(def: (java-type-to-lux-type mappings java-type)
(-> Mappings java/lang/reflect/Type (Meta Type))
(cond (host.instance? TypeVariable java-type)
(let [var-name (TypeVariable::getName [] (:coerce TypeVariable java-type))]
(case (dict.get var-name mappings)
(#.Some var-type)
(macro/wrap var-type)
#.None
(lang.throw unknown-type-var var-name)))
(host.instance? WildcardType java-type)
(let [java-type (:coerce WildcardType java-type)]
(case [(array.read +0 (WildcardType::getUpperBounds [] java-type))
(array.read +0 (WildcardType::getLowerBounds [] java-type))]
(^or [(#.Some bound) _] [_ (#.Some bound)])
(java-type-to-lux-type mappings bound)
_
(macro/wrap Any)))
(host.instance? Class java-type)
(let [java-type (:coerce (Class Object) java-type)
class-name (Class::getName [] java-type)]
(macro/wrap (case (array.size (Class::getTypeParameters [] java-type))
+0
(#.Primitive class-name (list))
arity
(|> (list.n/range +0 (dec arity))
list.reverse
(list/map (|>> (n/* +2) inc #.Parameter))
(#.Primitive class-name)
(type.univ-q arity)))))
(host.instance? ParameterizedType java-type)
(let [java-type (:coerce ParameterizedType java-type)
raw (ParameterizedType::getRawType [] java-type)]
(if (host.instance? Class raw)
(do macro.Monad<Meta>
[paramsT (|> java-type
(ParameterizedType::getActualTypeArguments [])
array.to-list
(monad.map @ (java-type-to-lux-type mappings)))]
(macro/wrap (#.Primitive (Class::getName [] (:coerce (Class Object) raw))
paramsT)))
(lang.throw jvm-type-is-not-a-class raw)))
(host.instance? GenericArrayType java-type)
(do macro.Monad<Meta>
[innerT (|> (:coerce GenericArrayType java-type)
(GenericArrayType::getGenericComponentType [])
(java-type-to-lux-type mappings))]
(wrap (#.Primitive "#Array" (list innerT))))
## else
(lang.throw cannot-convert-to-a-lux-type (jvm-type-name java-type))))
(def: (correspond-type-params class type)
(-> (Class Object) Type (Meta Mappings))
(case type
(#.Primitive name params)
(let [class-name (Class::getName [] class)
class-params (array.to-list (Class::getTypeParameters [] class))
num-class-params (list.size class-params)
num-type-params (list.size params)]
(cond (not (text/= class-name name))
(lang.throw cannot-correspond-type-with-a-class
(format "Class = " class-name "\n"
"Type = " (%type type)))
(not (n/= num-class-params num-type-params))
(lang.throw type-parameter-mismatch
(format "Expected: " (%i (.int num-class-params)) "\n"
" Actual: " (%i (.int num-type-params)) "\n"
" Class: " class-name "\n"
" Type: " (%type type)))
## else
(macro/wrap (|> params
(list.zip2 (list/map (TypeVariable::getName []) class-params))
(dict.from-list text.Hash<Text>)))
))
_
(lang.throw non-jvm-type type)))
(def: (object//cast proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list valueC))
(do macro.Monad<Meta>
[toT macro.expected-type
to-name (check-jvm toT)
[valueT valueA] (typeA.with-inference
(analyse valueC))
from-name (check-jvm valueT)
can-cast? (: (Meta Bool)
(case [from-name to-name]
(^template [<primitive> <object>]
(^or [<primitive> <object>]
[<object> <primitive>])
(do @
[_ (typeA.infer (#.Primitive to-name (list)))]
(wrap true)))
(["boolean" "java.lang.Boolean"]
["byte" "java.lang.Byte"]
["short" "java.lang.Short"]
["int" "java.lang.Integer"]
["long" "java.lang.Long"]
["float" "java.lang.Float"]
["double" "java.lang.Double"]
["char" "java.lang.Character"])
_
(do @
[_ (lang.assert primitives-are-not-objects from-name
(not (dict.contains? from-name boxes)))
_ (lang.assert primitives-are-not-objects to-name
(not (dict.contains? to-name boxes)))
to-class (load-class to-name)]
(loop [[current-name currentT] [from-name valueT]]
(if (text/= to-name current-name)
(do @
[_ (typeA.infer toT)]
(wrap true))
(do @
[current-class (load-class current-name)
_ (lang.assert cannot-cast (format "From class/primitive: " current-name "\n"
" To class/primitive: " to-name "\n"
" For value: " (%code valueC) "\n")
(Class::isAssignableFrom [current-class] to-class))
candiate-parents (monad.map @
(function (_ java-type)
(do @
[class-name (java-type-to-class java-type)
class (load-class class-name)]
(wrap [[class-name java-type] (Class::isAssignableFrom [class] to-class)])))
(list& (Class::getGenericSuperclass [] current-class)
(array.to-list (Class::getGenericInterfaces [] current-class))))]
(case (|> candiate-parents
(list.filter product.right)
(list/map product.left))
(#.Cons [next-name nextJT] _)
(do @
[mapping (correspond-type-params current-class currentT)
nextT (java-type-to-lux-type mapping nextJT)]
(recur [next-name nextT]))
#.Nil
(lang.throw cannot-cast (format "From class/primitive: " from-name "\n"
" To class/primitive: " to-name "\n"
" For value: " (%code valueC) "\n")))
))))))]
(if can-cast?
(wrap (#analysisL.Extension proc (list (analysisL.text from-name)
(analysisL.text to-name)
valueA)))
(lang.throw cannot-cast (format "From class/primitive: " from-name "\n"
" To class/primitive: " to-name "\n"
" For value: " (%code valueC) "\n"))))
_
(lang.throw /.invalid-syntax [proc args]))))
(def: object-procs
/.Bundle
(<| (/.prefix "object")
(|> (dict.new text.Hash<Text>)
(/.install "null" object//null)
(/.install "null?" object//null?)
(/.install "synchronized" object//synchronized)
(/.install "throw" object//throw)
(/.install "class" object//class)
(/.install "instance?" object//instance?)
(/.install "cast" object//cast)
)))
(def: (find-field class-name field-name)
(-> Text Text (Meta [(Class Object) Field]))
(do macro.Monad<Meta>
[class (load-class class-name)]
(case (Class::getDeclaredField [field-name] class)
(#e.Success field)
(let [owner (Field::getDeclaringClass [] field)]
(if (is? owner class)
(wrap [class field])
(lang.throw mistaken-field-owner
(format " Field: " field-name "\n"
" Owner Class: " (Class::getName [] owner) "\n"
"Target Class: " class-name "\n"))))
(#e.Error _)
(lang.throw unknown-field (format class-name "#" field-name)))))
(def: (static-field class-name field-name)
(-> Text Text (Meta [Type Bool]))
(do macro.Monad<Meta>
[[class fieldJ] (find-field class-name field-name)
#let [modifiers (Field::getModifiers [] fieldJ)]]
(if (Modifier::isStatic [modifiers])
(let [fieldJT (Field::getGenericType [] fieldJ)]
(do @
[fieldT (java-type-to-lux-type fresh-mappings fieldJT)]
(wrap [fieldT (Modifier::isFinal [modifiers])])))
(lang.throw not-a-static-field (format class-name "#" field-name)))))
(def: (virtual-field class-name field-name objectT)
(-> Text Text Type (Meta [Type Bool]))
(do macro.Monad<Meta>
[[class fieldJ] (find-field class-name field-name)
#let [modifiers (Field::getModifiers [] fieldJ)]]
(if (not (Modifier::isStatic [modifiers]))
(do @
[#let [fieldJT (Field::getGenericType [] fieldJ)
var-names (|> class
(Class::getTypeParameters [])
array.to-list
(list/map (TypeVariable::getName [])))]
mappings (: (Meta Mappings)
(case objectT
(#.Primitive _class-name _class-params)
(do @
[#let [num-params (list.size _class-params)
num-vars (list.size var-names)]
_ (lang.assert type-parameter-mismatch
(format "Expected: " (%i (.int num-params)) "\n"
" Actual: " (%i (.int num-vars)) "\n"
" Class: " _class-name "\n"
" Type: " (%type objectT))
(n/= num-params num-vars))]
(wrap (|> (list.zip2 var-names _class-params)
(dict.from-list text.Hash<Text>))))
_
(lang.throw non-object objectT)))
fieldT (java-type-to-lux-type mappings fieldJT)]
(wrap [fieldT (Modifier::isFinal [modifiers])]))
(lang.throw not-a-virtual-field (format class-name "#" field-name)))))
(def: (static//get proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list classC fieldC))
(case [classC fieldC]
[[_ (#.Text class)] [_ (#.Text field)]]
(do macro.Monad<Meta>
[[fieldT final?] (static-field class field)]
(wrap (#analysisL.Extension proc (list (analysisL.text class) (analysisL.text field)))))
_
(lang.throw /.invalid-syntax [proc args]))
_
(lang.throw /.incorrect-extension-arity [proc +2 (list.size args)]))))
(def: (static//put proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list classC fieldC valueC))
(case [classC fieldC]
[[_ (#.Text class)] [_ (#.Text field)]]
(do macro.Monad<Meta>
[_ (typeA.infer Any)
[fieldT final?] (static-field class field)
_ (lang.assert cannot-set-a-final-field (format class "#" field)
(not final?))
valueA (typeA.with-type fieldT
(analyse valueC))]
(wrap (#analysisL.Extension proc (list (analysisL.text class) (analysisL.text field) valueA))))
_
(lang.throw /.invalid-syntax [proc args]))
_
(lang.throw /.incorrect-extension-arity [proc +3 (list.size args)]))))
(def: (virtual//get proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list classC fieldC objectC))
(case [classC fieldC]
[[_ (#.Text class)] [_ (#.Text field)]]
(do macro.Monad<Meta>
[[objectT objectA] (typeA.with-inference
(analyse objectC))
[fieldT final?] (virtual-field class field objectT)]
(wrap (#analysisL.Extension proc (list (analysisL.text class) (analysisL.text field) objectA))))
_
(lang.throw /.invalid-syntax [proc args]))
_
(lang.throw /.incorrect-extension-arity [proc +3 (list.size args)]))))
(def: (virtual//put proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case args
(^ (list classC fieldC valueC objectC))
(case [classC fieldC]
[[_ (#.Text class)] [_ (#.Text field)]]
(do macro.Monad<Meta>
[[objectT objectA] (typeA.with-inference
(analyse objectC))
_ (typeA.infer objectT)
[fieldT final?] (virtual-field class field objectT)
_ (lang.assert cannot-set-a-final-field (format class "#" field)
(not final?))
valueA (typeA.with-type fieldT
(analyse valueC))]
(wrap (#analysisL.Extension proc (list (analysisL.text class) (analysisL.text field) valueA objectA))))
_
(lang.throw /.invalid-syntax [proc args]))
_
(lang.throw /.incorrect-extension-arity [proc +4 (list.size args)]))))
(def: (java-type-to-parameter type)
(-> java/lang/reflect/Type (Meta Text))
(cond (host.instance? Class type)
(macro/wrap (Class::getName [] (:coerce Class type)))
(host.instance? ParameterizedType type)
(java-type-to-parameter (ParameterizedType::getRawType [] (:coerce ParameterizedType type)))
(or (host.instance? TypeVariable type)
(host.instance? WildcardType type))
(macro/wrap "java.lang.Object")
(host.instance? GenericArrayType type)
(do macro.Monad<Meta>
[componentP (java-type-to-parameter (GenericArrayType::getGenericComponentType [] (:coerce GenericArrayType type)))]
(wrap (format componentP "[]")))
## else
(lang.throw cannot-convert-to-a-parameter (jvm-type-name type))))
(type: Method-style
#Static
#Abstract
#Virtual
#Special
#Interface)
(def: (check-method class method-name method-style arg-classes method)
(-> (Class Object) Text Method-style (List Text) Method (Meta Bool))
(do macro.Monad<Meta>
[parameters (|> (Method::getGenericParameterTypes [] method)
array.to-list
(monad.map @ java-type-to-parameter))
#let [modifiers (Method::getModifiers [] method)]]
(wrap (and (Object::equals [class] (Method::getDeclaringClass [] method))
(text/= method-name (Method::getName [] method))
(case #Static
#Special
(Modifier::isStatic [modifiers])
_
true)
(case method-style
#Special
(not (or (Modifier::isInterface [(Class::getModifiers [] class)])
(Modifier::isAbstract [modifiers])))
_
true)
(n/= (list.size arg-classes) (list.size parameters))
(list/fold (function (_ [expectedJC actualJC] prev)
(and prev
(text/= expectedJC actualJC)))
true
(list.zip2 arg-classes parameters))))))
(def: (check-constructor class arg-classes constructor)
(-> (Class Object) (List Text) (Constructor Object) (Meta Bool))
(do macro.Monad<Meta>
[parameters (|> (Constructor::getGenericParameterTypes [] constructor)
array.to-list
(monad.map @ java-type-to-parameter))]
(wrap (and (Object::equals [class] (Constructor::getDeclaringClass [] constructor))
(n/= (list.size arg-classes) (list.size parameters))
(list/fold (function (_ [expectedJC actualJC] prev)
(and prev
(text/= expectedJC actualJC)))
true
(list.zip2 arg-classes parameters))))))
(def: idx-to-parameter
(-> Nat Type)
(|>> (n/* +2) inc #.Parameter))
(def: (type-vars amount offset)
(-> Nat Nat (List Type))
(if (n/= +0 amount)
(list)
(|> (list.n/range offset (|> amount dec (n/+ offset)))
(list/map idx-to-parameter))))
(def: (method-to-type method-style method)
(-> Method-style Method (Meta [Type (List Type)]))
(let [owner (Method::getDeclaringClass [] method)
owner-name (Class::getName [] owner)
owner-tvars (case method-style
#Static
(list)
_
(|> (Class::getTypeParameters [] owner)
array.to-list
(list/map (TypeVariable::getName []))))
method-tvars (|> (Method::getTypeParameters [] method)
array.to-list
(list/map (TypeVariable::getName [])))
num-owner-tvars (list.size owner-tvars)
num-method-tvars (list.size method-tvars)
all-tvars (list/compose owner-tvars method-tvars)
num-all-tvars (list.size all-tvars)
owner-tvarsT (type-vars num-owner-tvars +0)
method-tvarsT (type-vars num-method-tvars num-owner-tvars)
mappings (: Mappings
(if (list.empty? all-tvars)
fresh-mappings
(|> (list/compose owner-tvarsT method-tvarsT)
list.reverse
(list.zip2 all-tvars)
(dict.from-list text.Hash<Text>))))]
(do macro.Monad<Meta>
[inputsT (|> (Method::getGenericParameterTypes [] method)
array.to-list
(monad.map @ (java-type-to-lux-type mappings)))
outputT (java-type-to-lux-type mappings (Method::getGenericReturnType [] method))
exceptionsT (|> (Method::getGenericExceptionTypes [] method)
array.to-list
(monad.map @ (java-type-to-lux-type mappings)))
#let [methodT (<| (type.univ-q num-all-tvars)
(type.function (case method-style
#Static
inputsT
_
(list& (#.Primitive owner-name (list.reverse owner-tvarsT))
inputsT)))
outputT)]]
(wrap [methodT exceptionsT]))))
(type: (Evaluation a)
(#Pass a)
(#Hint a)
#Fail)
(do-template [<name> <tag>]
[(def: <name>
(All [a] (-> (Evaluation a) (Maybe a)))
(|>> (case> (<tag> output)
(#.Some output)
_
#.None)))]
[pass! #Pass]
[hint! #Hint]
)
(def: (method-candidate class-name method-name method-style arg-classes)
(-> Text Text Method-style (List Text) (Meta [Type (List Type)]))
(do macro.Monad<Meta>
[class (load-class class-name)
candidates (|> class
(Class::getDeclaredMethods [])
array.to-list
(monad.map @ (: (-> Method (Meta (Evaluation Method)))
(function (_ method)
(do @
[passes? (check-method class method-name method-style arg-classes method)]
(wrap (cond passes?
(#Pass method)
(text/= method-name (Method::getName [] method))
(#Hint method)
## else
#Fail)))))))]
(case (list.search-all pass! candidates)
#.Nil
(lang.throw no-candidates [class-name method-name
(|> candidates
(list.search-all hint!)
(list/map (method-to-type method-style)))])
(#.Cons method #.Nil)
(method-to-type method-style method)
candidates
(lang.throw too-many-candidates [class-name method-name
(list/map (method-to-type method-style) candidates)]))))
(def: (constructor-to-type constructor)
(-> (Constructor Object) (Meta [Type (List Type)]))
(let [owner (Constructor::getDeclaringClass [] constructor)
owner-name (Class::getName [] owner)
owner-tvars (|> (Class::getTypeParameters [] owner)
array.to-list
(list/map (TypeVariable::getName [])))
constructor-tvars (|> (Constructor::getTypeParameters [] constructor)
array.to-list
(list/map (TypeVariable::getName [])))
num-owner-tvars (list.size owner-tvars)
all-tvars (list/compose owner-tvars constructor-tvars)
num-all-tvars (list.size all-tvars)
owner-tvarsT (type-vars num-owner-tvars +0)
constructor-tvarsT (type-vars num-all-tvars num-owner-tvars)
mappings (: Mappings
(if (list.empty? all-tvars)
fresh-mappings
(|> (list/compose owner-tvarsT constructor-tvarsT)
list.reverse
(list.zip2 all-tvars)
(dict.from-list text.Hash<Text>))))]
(do macro.Monad<Meta>
[inputsT (|> (Constructor::getGenericParameterTypes [] constructor)
array.to-list
(monad.map @ (java-type-to-lux-type mappings)))
exceptionsT (|> (Constructor::getGenericExceptionTypes [] constructor)
array.to-list
(monad.map @ (java-type-to-lux-type mappings)))
#let [objectT (#.Primitive owner-name (list.reverse owner-tvarsT))
constructorT (<| (type.univ-q num-all-tvars)
(type.function inputsT)
objectT)]]
(wrap [constructorT exceptionsT]))))
(def: constructor-method "<init>")
(def: (constructor-candidate class-name arg-classes)
(-> Text (List Text) (Meta [Type (List Type)]))
(do macro.Monad<Meta>
[class (load-class class-name)
candidates (|> class
(Class::getConstructors [])
array.to-list
(monad.map @ (function (_ constructor)
(do @
[passes? (check-constructor class arg-classes constructor)]
(wrap [passes? constructor])))))]
(case (list.search-all pass! candidates)
#.Nil
(lang.throw no-candidates [class-name ..constructor-method
(|> candidates
(list.search-all hint!)
(list/map constructor-to-type))])
(#.Cons constructor #.Nil)
(constructor-to-type constructor)
candidates
(lang.throw too-many-candidates [class-name ..constructor-method
(list/map constructor-to-type candidates)]))))
(def: (decorate-inputs typesT inputsA)
(-> (List Text) (List Analysis) (List Analysis))
(|> inputsA
(list.zip2 (list/map analysisL.text typesT))
(list/map (function (_ [type value])
(analysisL.product-analysis (list type value))))))
(def: (invoke//static proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case (: (e.Error [Text Text (List [Text Code])])
(s.run args ($_ p.seq s.text s.text (p.some (s.tuple (p.seq s.text s.any))))))
(#e.Success [class method argsTC])
(do macro.Monad<Meta>
[#let [argsT (list/map product.left argsTC)]
[methodT exceptionsT] (method-candidate class method #Static argsT)
[outputT argsA] (inferenceA.general analyse methodT (list/map product.right argsTC))
outputJC (check-jvm outputT)]
(wrap (#analysisL.Extension proc (list& (analysisL.text class) (analysisL.text method)
(analysisL.text outputJC) (decorate-inputs argsT argsA)))))
_
(lang.throw /.invalid-syntax [proc args]))))
(def: (invoke//virtual proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case (: (e.Error [Text Text Code (List [Text Code])])
(s.run args ($_ p.seq s.text s.text s.any (p.some (s.tuple (p.seq s.text s.any))))))
(#e.Success [class method objectC argsTC])
(do macro.Monad<Meta>
[#let [argsT (list/map product.left argsTC)]
[methodT exceptionsT] (method-candidate class method #Virtual argsT)
[outputT allA] (inferenceA.general analyse methodT (list& objectC (list/map product.right argsTC)))
#let [[objectA argsA] (case allA
(#.Cons objectA argsA)
[objectA argsA]
_
(undefined))]
outputJC (check-jvm outputT)]
(wrap (#analysisL.Extension proc (list& (analysisL.text class) (analysisL.text method)
(analysisL.text outputJC) objectA (decorate-inputs argsT argsA)))))
_
(lang.throw /.invalid-syntax [proc args]))))
(def: (invoke//special proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case (: (e.Error [(List Code) [Text Text Code (List [Text Code]) Any]])
(p.run args ($_ p.seq s.text s.text s.any (p.some (s.tuple (p.seq s.text s.any))) s.end!)))
(#e.Success [_ [class method objectC argsTC _]])
(do macro.Monad<Meta>
[#let [argsT (list/map product.left argsTC)]
[methodT exceptionsT] (method-candidate class method #Special argsT)
[outputT argsA] (inferenceA.general analyse methodT (list& objectC (list/map product.right argsTC)))
outputJC (check-jvm outputT)]
(wrap (#analysisL.Extension proc (list& (analysisL.text class) (analysisL.text method)
(analysisL.text outputJC) (decorate-inputs argsT argsA)))))
_
(lang.throw /.invalid-syntax [proc args]))))
(def: (invoke//interface proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case (: (e.Error [Text Text Code (List [Text Code])])
(s.run args ($_ p.seq s.text s.text s.any (p.some (s.tuple (p.seq s.text s.any))))))
(#e.Success [class-name method objectC argsTC])
(do macro.Monad<Meta>
[#let [argsT (list/map product.left argsTC)]
class (load-class class-name)
_ (lang.assert non-interface class-name
(Modifier::isInterface [(Class::getModifiers [] class)]))
[methodT exceptionsT] (method-candidate class-name method #Interface argsT)
[outputT argsA] (inferenceA.general analyse methodT (list& objectC (list/map product.right argsTC)))
outputJC (check-jvm outputT)]
(wrap (#analysisL.Extension proc
(list& (analysisL.text class-name) (analysisL.text method) (analysisL.text outputJC)
(decorate-inputs argsT argsA)))))
_
(lang.throw /.invalid-syntax [proc args]))))
(def: (invoke//constructor proc)
(-> Text ///.Analysis)
(function (_ analyse eval args)
(case (: (e.Error [Text (List [Text Code])])
(s.run args ($_ p.seq s.text (p.some (s.tuple (p.seq s.text s.any))))))
(#e.Success [class argsTC])
(do macro.Monad<Meta>
[#let [argsT (list/map product.left argsTC)]
[methodT exceptionsT] (constructor-candidate class argsT)
[outputT argsA] (inferenceA.general analyse methodT (list/map product.right argsTC))]
(wrap (#analysisL.Extension proc (list& (analysisL.text class) (decorate-inputs argsT argsA)))))
_
(lang.throw /.invalid-syntax [proc args]))))
(def: member-procs
/.Bundle
(<| (/.prefix "member")
(|> (dict.new text.Hash<Text>)
(dict.merge (<| (/.prefix "static")
(|> (dict.new text.Hash<Text>)
(/.install "get" static//get)
(/.install "put" static//put))))
(dict.merge (<| (/.prefix "virtual")
(|> (dict.new text.Hash<Text>)
(/.install "get" virtual//get)
(/.install "put" virtual//put))))
(dict.merge (<| (/.prefix "invoke")
(|> (dict.new text.Hash<Text>)
(/.install "static" invoke//static)
(/.install "virtual" invoke//virtual)
(/.install "special" invoke//special)
(/.install "interface" invoke//interface)
(/.install "constructor" invoke//constructor)
)))
)))
(def: #export extensions
/.Bundle
(<| (/.prefix "jvm")
(|> (dict.new text.Hash<Text>)
(dict.merge conversion-procs)
(dict.merge int-procs)
(dict.merge long-procs)
(dict.merge float-procs)
(dict.merge double-procs)
(dict.merge char-procs)
(dict.merge array-procs)
(dict.merge object-procs)
(dict.merge member-procs)
)))
|