# This file is a part of Julia. License is MIT: http://julialang.org/license

# code_native / code_llvm (issue #8239)
# It's hard to really test these, but just running them should be
# sufficient to catch segfault bugs.

module ReflectionTest
using Base.Test

function test_ast_reflection(freflect, f, types)
    @test !isempty(freflect(f, types))
end

function test_bin_reflection(freflect, f, types)
    iob = IOBuffer()
    freflect(iob, f, types)
    str = takebuf_string(iob)
    @test !isempty(str)
end

function test_code_reflection(freflect, f, types, tester)
    tester(freflect, f, types)
    tester(freflect, f, (types.parameters...))
end

function test_code_reflections(tester, freflect)
    test_code_reflection(freflect, ismatch,
                         Tuple{Regex, AbstractString}, tester) # abstract type
    test_code_reflection(freflect, +, Tuple{Int, Int}, tester) # leaftype signature
    test_code_reflection(freflect, +,
                         Tuple{Array{Float32}, Array{Float32}}, tester) # incomplete types
    test_code_reflection(freflect, Module, Tuple{}, tester) # Module() constructor (transforms to call)
    test_code_reflection(freflect, Array{Int64}, Tuple{Array{Int32}}, tester) # with incomplete types
end

println(STDERR, "The following 'Returned code...' warnings indicate normal behavior:")
test_code_reflections(test_ast_reflection, code_lowered)
test_code_reflections(test_ast_reflection, code_typed)
test_code_reflections(test_bin_reflection, code_llvm)
test_code_reflections(test_bin_reflection, code_native)
end

# code_warntype
module WarnType
using Base.Test

function warntype_hastag(f, types, tag)
    iob = IOBuffer()
    code_warntype(iob, f, types)
    str = takebuf_string(iob)
    !isempty(search(str, tag))
end

pos_stable(x) = x > 0 ? x : zero(x)
pos_unstable(x) = x > 0 ? x : 0

tag = Base.have_color ? Base.text_colors[:red] : "UNION"
@test warntype_hastag(pos_unstable, Tuple{Float64}, tag)
@test !warntype_hastag(pos_stable, Tuple{Float64}, tag)

type Stable{T,N}
    A::Array{T,N}
end
type Unstable{T}
    A::Array{T}
end
Base.getindex(A::Stable, i) = A.A[i]
Base.getindex(A::Unstable, i) = A.A[i]

tag = Base.have_color ? Base.text_colors[:red] : "ARRAY{FLOAT64,N}"
@test warntype_hastag(getindex, Tuple{Unstable{Float64},Int}, tag)
@test !warntype_hastag(getindex, Tuple{Stable{Float64,2},Int}, tag)
@test warntype_hastag(getindex, Tuple{Stable{Float64},Int}, tag)

# Make sure emphasis is not used for other functions
tag = Base.have_color ? Base.text_colors[:red] : "ANY"
iob = IOBuffer()
show(iob, expand(:(x->x^2)))
str = takebuf_string(iob)
@test isempty(search(str, tag))

# issue #13568
@test !warntype_hastag(+, Tuple{Int,Int}, tag)
@test !warntype_hastag(-, Tuple{Int,Int}, tag)
@test !warntype_hastag(*, Tuple{Int,Int}, tag)
@test !warntype_hastag(/, Tuple{Int,Int}, tag)

end

# isbits

@test !isbits(Array{Int})
@test isbits(Float32)
@test isbits(Int)
@test !isbits(AbstractString)

# issue #10165
i10165(::DataType) = 0
i10165{T,n}(::Type{AbstractArray{T,n}}) = 1
@test i10165(AbstractArray{Int}) == 0
@test which(i10165, Tuple{Type{AbstractArray{Int}},}).sig == Tuple{typeof(i10165),DataType}

# fullname
@test fullname(Base) == (:Base,)
@test fullname(Base.Pkg) == (:Base, :Pkg)

const a_const = 1
not_const = 1
@test isconst(:a_const) == true
@test isconst(Base, :pi) == true
@test isconst(:pi) == true
@test isconst(:not_const) == false
@test isconst(:is_not_defined) == false

@test isimmutable(1) == true
@test isimmutable([]) == false
@test isimmutable("abc") == true

## find bindings tests
@test ccall(:jl_get_module_of_binding, Any, (Any, Any), Base, :sin)==Base

module TestMod7648
using Base.Test
export a9475, c7648, foo7648

const c7648 = 8
d7648 = 9
const f7648 = 10
foo7648(x) = x

    module TestModSub9475
    using Base.Test
    using ..TestMod7648
    export a9475
    a9475 = 5
    b9475 = 7
    let
        @test Base.binding_module(:a9475)==current_module()
        @test Base.binding_module(:c7648)==TestMod7648
        @test Base.module_name(current_module())==:TestModSub9475
        @test Base.fullname(current_module())==(:TestMod7648, :TestModSub9475)
        @test Base.module_parent(current_module())==TestMod7648
    end
    end # module TestModSub9475

using .TestModSub9475

let
    @test Base.binding_module(:d7648)==current_module()
    @test Base.binding_module(:a9475)==TestModSub9475
    @test Base.module_name(current_module())==:TestMod7648
    @test Base.module_parent(current_module())==Main
end
end # module TestMod7648

let
    @test Base.binding_module(TestMod7648, :d7648)==TestMod7648
    @test Base.binding_module(TestMod7648, :a9475)==TestMod7648.TestModSub9475
    @test Base.binding_module(TestMod7648.TestModSub9475, :b9475)==TestMod7648.TestModSub9475
    @test Set(names(TestMod7648))==Set([:TestMod7648, :a9475, :c7648, :foo7648])
    @test isconst(TestMod7648, :c7648)
    @test !isconst(TestMod7648, :d7648)
end

let
    using TestMod7648
    @test Base.binding_module(:a9475)==TestMod7648.TestModSub9475
    @test Base.binding_module(:c7648)==TestMod7648
    @test Base.function_name(foo7648)==:foo7648
    @test Base.function_module(foo7648, (Any,))==TestMod7648
    @test basename(functionloc(foo7648, (Any,))[1]) == "reflection.jl"
    @test methods(TestMod7648.TestModSub9475.foo7648).defs==@which foo7648(5)
    @test TestMod7648==@which foo7648
    @test TestMod7648.TestModSub9475==@which a9475
end

@test_throws ArgumentError which(is, Tuple{Int, Int})

module TestingExported
using Base.Test
import Base.isexported
global this_is_not_defined
export this_is_not_defined
@test_throws ErrorException which(:this_is_not_defined)
@test_throws ErrorException @which this_is_not_defined
@test_throws ErrorException which(:this_is_not_exported)
@test isexported(current_module(), :this_is_not_defined)
@test !isexported(current_module(), :this_is_not_exported)
const a_value = 1
@test which(:a_value) == current_module()
@test !isexported(current_module(), :a_value)
end

# issue #13264
@test isa((@which vcat(1...)), Method)

# issue #13464
let t13464 = "hey there sailor"
    try
        @which t13464[1,1] = (1.0,true)
        error("unexpected")
    catch err13464
        @test startswith(err13464.msg, "expression is not a function call, or is too complex")
    end
end

let ex = :(a + b)
    @test string(ex) == "a + b"
    ex.typ = Integer
    @test string(ex) == "(a + b)::Integer"
end

type TLayout
    x::Int8
    y::Int16
    z::Int32
end
tlayout = TLayout(5,7,11)
@test fieldnames(tlayout) == fieldnames(TLayout) == [:x, :y, :z]
@test [(fieldoffset(TLayout,i), fieldname(TLayout,i), fieldtype(TLayout,i)) for i = 1:nfields(TLayout)] ==
    [(0, :x, Int8), (2, :y, Int16), (4, :z, Int32)]
@test_throws BoundsError fieldtype(TLayout, 0)
@test_throws BoundsError fieldname(TLayout, 0)
@test_throws BoundsError fieldoffset(TLayout, 0)
@test_throws BoundsError fieldtype(TLayout, 4)
@test_throws BoundsError fieldname(TLayout, 4)
@test_throws BoundsError fieldoffset(TLayout, 4)

import Base: isstructtype, type_alignment, return_types
@test !isstructtype(Union{})
@test !isstructtype(Union{Int,Float64})
@test !isstructtype(Int)
@test isstructtype(TLayout)
@test type_alignment(UInt16) == 2
@test type_alignment(TLayout) == 4
let rts = return_types(TLayout)
    @test length(rts) >= 3 # general constructor, specific constructor, and call-to-convert adapter(s)
    @test all(rts .== TLayout)
end