Revision f442e4230a41d0d40f81346c1707f946f743cbcf authored by Jeff Bezanson on 09 June 2021, 02:51:34 UTC, committed by GitHub on 09 June 2021, 02:51:34 UTC
This PR implements a way to keep tables of methods that are
not part of the internal method table, but still participate
in the special support we have for keeping tables of methods,
in particular unification through precompilation and efficient
lookup. The intended design use case is to allow for method overlay
tables for various non-CPU backends (e.g. GPU and TPU). These
backends would like to modify basic function like `sin` to
perform better on the device in question (or in the case of TPU
to define them over non-LLVM intrinsics).
It is worth noting that this PR only gives the ability to keep
these tables of methods. It assigns no particular meaning to them
and the runtime (and regular inference) do not look at them.
They are designed as an implementation detail for external
compilers and similar tools.
# Demo
```julia
julia> using Base.Experimental: @overlay, @MethodTable
julia> @MethodTable(mt)
# 0 methods:
julia> @overlay mt function sin(x::Float64)
1
end
julia> @overlay mt function cos(x::Float64)
1
end
julia> mt
# 2 methods:
[1] cos(x::Float64) in Main at REPL[5]:1
[2] sin(x::Float64) in Main at REPL[4]:1
julia> Base._methods_by_ftype(Tuple{typeof(sin), Float64}, mt, 1, typemax(UInt))
1-element Vector{Any}:
Core.MethodMatch(Tuple{typeof(sin), Float64}, svec(), sin(x::Float64) in Main at REPL[4]:1, true)
julia> Base._methods_by_ftype(Tuple{typeof(sin), Float64}, 1, typemax(UInt))
1-element Vector{Any}:
Core.MethodMatch(Tuple{typeof(sin), Float64}, svec(Float64), sin(x::T) where T<:Union{Float32, Float64} in Base.Math at special/trig.jl:29, true)
```
Co-authored-by: Tim Besard <tim.besard@gmail.com>
Co-authored-by: Julian P Samaroo <jpsamaroo@jpsamaroo.me>
Co-authored-by: Keno Fischer <keno@juliacomputing.com>
1 parent 0e3276c
syntax.jl
# This file is a part of Julia. License is MIT: https://julialang.org/license
# tests for parser and syntax lowering
using Random
import Base.Meta.ParseError
function parseall(str)
pos = firstindex(str)
exs = []
while pos <= lastindex(str)
ex, pos = Meta.parse(str, pos)
push!(exs, ex)
end
if length(exs) == 0
throw(ParseError("end of input"))
elseif length(exs) == 1
return exs[1]
else
return Expr(:block, exs...)
end
end
# issue #9684
let
undot(op) = Symbol(string(op)[2:end])
for (ex1, ex2) in [("5 .≠ x", "5 .!= x"),
("5 .≥ x", "5 .>= x"),
("5 .≤ x", "5 .<= x")]
ex1 = Meta.parse(ex1); ex2 = Meta.parse(ex2)
@test ex1.head === :call && (ex1.head === ex2.head)
@test ex1.args[2] === 5 && ex2.args[2] === 5
@test Core.eval(Main, undot(ex1.args[1])) === Core.eval(Main, undot(ex2.args[1]))
@test ex1.args[3] === :x && (ex1.args[3] === ex2.args[3])
end
end
# issue #9704
let a = :a
@test :(try
catch $a
end) == :(try
catch a
end)
@test :(module $a end) == :(module a
end)
end
# string literals
macro test999_str(args...); args; end
@test test999"a"b == ("a","b")
@test test999"""a"""b == ("a","b")
@test test999"
a
b" == ("
a
b",)
@test test999"""
a
b""" == ("a\nb",)
# make sure a trailing integer, not just a symbol, is allowed also
@test test999"foo"123 == ("foo", 123)
# issue #5997
@test_throws ParseError Meta.parse(": x")
@test_throws ParseError Meta.parse("""begin
:
x""")
@test_throws ParseError Meta.parse("d[: 2]")
# issue #6770
@test_throws ParseError Meta.parse("x.3")
# issue #8763
@test_throws ParseError Meta.parse("sqrt(16)2")
@test_throws ParseError Meta.parse("x' y")
@test_throws ParseError Meta.parse("x 'y")
@test Meta.parse("x'y") == Expr(:call, :*, Expr(Symbol("'"), :x), :y)
# issue #18851
@test Meta.parse("-2[m]") == Expr(:call, :-, Expr(:ref, 2, :m))
@test Meta.parse("+2[m]") == Expr(:call, :+, Expr(:ref, 2, :m))
@test Meta.parse("!2[3]") == Expr(:call, :!, Expr(:ref, 2, 3))
@test Meta.parse("-2{m}") == Expr(:call, :-, Expr(:curly, 2, :m))
@test Meta.parse("+2{m}") == Expr(:call, :+, Expr(:curly, 2, :m))
@test Meta.parse("-2(m)") == Expr(:call, :*, -2, :m)
# issue #8301
@test_throws ParseError Meta.parse("&*s")
# issue #10677
@test_throws ParseError Meta.parse("/1")
@test_throws ParseError Meta.parse("/pi")
@test Meta.parse("- = 2") == Expr(:(=), :(-), 2)
@test Meta.parse("/ = 2") == Expr(:(=), :(/), 2)
@test_throws ParseError Meta.parse("< : 2")
@test_throws ParseError Meta.parse("+ : 2")
@test_throws ParseError Meta.parse("< :2")
@test Meta.parse("+ :2") == Expr(:call, :(+), QuoteNode(2))
# issue #10900
@test_throws ParseError Meta.parse("+=")
@test_throws ParseError Meta.parse(".")
@test_throws ParseError Meta.parse("...")
# issue #10901
@test Meta.parse("/([1], 1)[1]") == :(([1] / 1)[1])
# issue #10997
@test Meta.parse(":(x.\$f[i])") == Expr(:quote,
Expr(:ref,
Expr(Symbol("."), :x,
QuoteNode(Expr(:$, :f))),
:i))
# issue #10994
@test Meta.parse("1 + #= \0 =# 2") == :(1 + 2)
# issue #10910
@test Meta.parse(":(using A)") == Expr(:quote, Expr(:using, Expr(:., :A)))
@test Meta.parse(":(using A.b, B)") == Expr(:quote,
Expr(:using,
Expr(:., :A, :b),
Expr(:., :B)))
@test Meta.parse(":(using A: b, c.d)") == Expr(:quote,
Expr(:using,
Expr(:(:),
Expr(:., :A),
Expr(:., :b),
Expr(:., :c, :d))))
@test Meta.parse(":(import A)") == Expr(:quote, Expr(:import, Expr(:., :A)))
@test Meta.parse(":(import A.b, B)") == Expr(:quote,
Expr(:import,
Expr(:., :A, :b),
Expr(:., :B)))
@test Meta.parse(":(import A: b, c.d)") == Expr(:quote,
Expr(:import,
Expr(:(:),
Expr(:., :A),
Expr(:., :b),
Expr(:., :c, :d))))
# issue #11332
@test Meta.parse("export \$(Symbol(\"A\"))") == :(export $(Expr(:$, :(Symbol("A")))))
@test Meta.parse("export \$A") == :(export $(Expr(:$, :A)))
@test Meta.parse("using \$a.\$b") == Expr(:using, Expr(:., Expr(:$, :a), Expr(:$, :b)))
@test Meta.parse("using \$a.\$b, \$c") == Expr(:using,
Expr(:., Expr(:$, :a), Expr(:$, :b)),
Expr(:., Expr(:$, :c)))
@test Meta.parse("using \$a: \$b, \$c.\$d") ==
Expr(:using,
Expr(:(:), Expr(:., Expr(:$, :a)), Expr(:., Expr(:$, :b)),
Expr(:., Expr(:$, :c), Expr(:$, :d))))
# fix pr #11338 and test for #11497
@test parseall("using \$\na") == Expr(:block, Expr(:using, Expr(:., :$)), :a)
@test parseall("using \$,\na") == Expr(:using, Expr(:., :$), Expr(:., :a))
@test parseall("using &\na") == Expr(:block, Expr(:using, Expr(:., :&)), :a)
@test parseall("a = &\nb") == Expr(:block, Expr(:(=), :a, :&), :b)
@test parseall("a = \$\nb") == Expr(:block, Expr(:(=), :a, :$), :b)
@test parseall(":(a = &\nb)") == Expr(:quote, Expr(:(=), :a, Expr(:&, :b)))
@test parseall(":(a = \$\nb)") == Expr(:quote, Expr(:(=), :a, Expr(:$, :b)))
# issue 12027 - short macro name parsing vs _str suffix
@test parseall("""
macro f(args...) end; @f "macro argument"
""") == Expr(:toplevel,
Expr(:macro, Expr(:call, :f, Expr(:..., :args)),
Expr(:block, LineNumberNode(1, :none), LineNumberNode(1, :none))),
Expr(:macrocall, Symbol("@f"), LineNumberNode(1, :none), "macro argument"))
# blocks vs. tuples
@test Meta.parse("()") == Expr(:tuple)
@test Meta.parse("(;)") == Expr(:tuple, Expr(:parameters))
@test Meta.parse("(;;)") == Expr(:block)
@test Meta.parse("(;;;;)") == Expr(:block)
@test_throws ParseError Meta.parse("(,)")
@test_throws ParseError Meta.parse("(;,)")
@test_throws ParseError Meta.parse("(,;)")
# TODO: would be nice to make these errors, but needed to parse e.g. `(x;y,)->x`
#@test_throws ParseError Meta.parse("(1;2,)")
#@test_throws ParseError Meta.parse("(1;2,;)")
#@test_throws ParseError Meta.parse("(1;2,;3)")
@test Meta.parse("(x;)") == Expr(:block, :x)
@test Meta.parse("(;x)") == Expr(:tuple, Expr(:parameters, :x))
@test Meta.parse("(;x,)") == Expr(:tuple, Expr(:parameters, :x))
@test Meta.parse("(x,)") == Expr(:tuple, :x)
@test Meta.parse("(x,;)") == Expr(:tuple, Expr(:parameters), :x)
@test Meta.parse("(x;y)") == Expr(:block, :x, LineNumberNode(1,:none), :y)
@test Meta.parse("(x...;)") == Expr(:tuple, Expr(:parameters), Expr(:(...), :x))
@test Meta.parse("(;x...)") == Expr(:tuple, Expr(:parameters, Expr(:(...), :x)))
@test Meta.parse("(x...;y)") == Expr(:tuple, Expr(:parameters, :y), Expr(:(...), :x))
@test Meta.parse("(x;y...)") == Expr(:block, :x, LineNumberNode(1,:none), Expr(:(...), :y))
@test Meta.parse("(x=1;y=2)") == Expr(:block, Expr(:(=), :x, 1), LineNumberNode(1,:none), Expr(:(=), :y, 2))
@test Meta.parse("(x,;y)") == Expr(:tuple, Expr(:parameters, :y), :x)
@test Meta.parse("(x,;y=1)") == Expr(:tuple, Expr(:parameters, Expr(:kw, :y, 1)), :x)
@test Meta.parse("(x,a;y=1)") == Expr(:tuple, Expr(:parameters, Expr(:kw, :y, 1)), :x, :a)
@test Meta.parse("(x,a;y=1,z=2)") == Expr(:tuple, Expr(:parameters, Expr(:kw,:y,1), Expr(:kw,:z,2)), :x, :a)
@test Meta.parse("(a=1, b=2)") == Expr(:tuple, Expr(:(=), :a, 1), Expr(:(=), :b, 2))
@test_throws ParseError Meta.parse("(1 2)") # issue #15248
@test Meta.parse("f(x;)") == Expr(:call, :f, Expr(:parameters), :x)
@test Meta.parse("1 == 2|>3") == Expr(:call, :(==), 1, Expr(:call, :(|>), 2, 3))
# issue #24153
@test Meta.parse("a|>b|>c|>d") == Meta.parse("((a|>b)|>c)|>d")
@test Meta.parse("a<|b<|c<|d") == Meta.parse("a<|(b<|(c<|d))")
# issue #12501 and pr #12502
Meta.parse("""
baremodule A
"a" in b
end
""")
Meta.parse("""
baremodule A
"a"
end
""")
# issue #12626
@test Meta.parse("a .÷ 1") == Expr(:call, :.÷, :a, 1)
@test Meta.parse("a .÷= 1") == Expr(:.÷=, :a, 1)
# issue #12771
@test -(3)^2 == -9
# issue #13302
let p = Meta.parse("try
a
catch
b, c = t
end")
@test isa(p,Expr) && p.head === :try
@test p.args[2] === false
@test p.args[3].args[end] == Meta.parse("b,c = t")
end
# pr #13078
@test Meta.parse("a in b in c") == Expr(:comparison, :a, :in, :b, :in, :c)
@test Meta.parse("a||b→c&&d") == Expr(:call, :→,
Expr(Symbol("||"), :a, :b),
Expr(Symbol("&&"), :c, :d))
# issue #11988 -- normalize \r and \r\n in literal strings to \n
@test "foo\nbar" == Meta.parse("\"\"\"\r\nfoo\r\nbar\"\"\"") ==
Meta.parse("\"\"\"\nfoo\nbar\"\"\"") == Meta.parse("\"\"\"\rfoo\rbar\"\"\"") ==
Meta.parse("\"foo\r\nbar\"") == Meta.parse("\"foo\rbar\"") == Meta.parse("\"foo\nbar\"")
@test '\r' == first("\r") == first("\r\n") # still allow explicit \r
# allow invalid UTF-8 in string literals
@test "\ud800"[1] == Char(0xd800)
@test "\udfff"[1] == Char(0xdfff)
@test length("\xc0\xb0") == 1
@test "\xc0\xb0"[1] == reinterpret(Char, 0xc0b00000)
# issue #14561 - generating 0-method generic function def
let fname = :f
@test :(function $fname end) == Expr(:function, :f)
end
# issue #14977
@test Meta.parse("x = 1", 1) == (:(x = 1), 6)
@test Meta.parse("x = 1", 6) == (nothing, 6)
@test_throws BoundsError Meta.parse("x = 1", 0)
@test_throws BoundsError Meta.parse("x = 1", -1)
@test_throws BoundsError Meta.parse("x = 1", 7)
# issue #14683
@test_throws ParseError Meta.parse("'\\A\"'")
@test Meta.parse("'\"'") == Meta.parse("'\\\"'") == '"' == "\""[1] == '\42'
# issue #24558
@test_throws ParseError Meta.parse("'\\xff'")
@test_throws ParseError Meta.parse("'\\x80'")
@test_throws ParseError Meta.parse("'ab'")
@test '\u2200' == "\u2200"[1]
@test_throws ParseError Meta.parse("f(2x for x=1:10, y")
# issue #15223
call0(f) = f()
call1(f,x) = f(x)
call2(f,x,y) = f(x,y)
@test (call0() do; 42 end) == 42
@test (call1(42) do x; x+1 end) == 43
@test (call2(42,1) do x,y; x+y+1 end) == 44
# definitions using comparison syntax
let a⊂b = reduce(&, x ∈ b for x in a) && length(b)>length(a)
@test [1,2] ⊂ [1,2,3,4]
@test !([1,2] ⊂ [1,3,4])
@test !([1,2] ⊂ [1,2])
end
# issue #9503
@test Meta.parse("x<:y") == Expr(:(<:), :x, :y)
@test Meta.parse("x>:y") == Expr(:(>:), :x, :y)
@test Meta.parse("x<:y<:z").head === :comparison
@test Meta.parse("x>:y<:z").head === :comparison
# reason PR #19765, <- operator, was reverted
@test -2<-1 # DO NOT ADD SPACES
# issue #11169
uncalled(x) = @test false
fret() = uncalled(return true)
@test fret()
# issue #9617
let p = 15
@test 2p+1 == 31 # not a hex float literal
end
function test_parseerror(str, msg)
try
Meta.parse(str)
@test false
catch e
@test isa(e,ParseError) && e.msg == msg
end
end
test_parseerror("0x", "invalid numeric constant \"0x\"")
test_parseerror("0b", "invalid numeric constant \"0b\"")
test_parseerror("0o", "invalid numeric constant \"0o\"")
test_parseerror("0x0.1", "hex float literal must contain \"p\" or \"P\"")
test_parseerror("0x1.0p", "invalid numeric constant \"0x1.0\"")
# issue #15798
@test Meta.lower(Main, Base.parse_input_line("""
try = "No"
""")) == Expr(:error, "unexpected \"=\"")
# issue #19861 make sure macro-expansion happens in the newest world for top-level expression
@test eval(Base.parse_input_line("""
macro X19861()
return 23341
end
@X19861
""")::Expr) == 23341
# issue #15763
test_parseerror("if\nfalse\nend", "missing condition in \"if\" at none:1")
test_parseerror("if false\nelseif\nend", "missing condition in \"elseif\" at none:2")
# issue #15828
@test Meta.lower(Main, Meta.parse("x...")) == Expr(:error, "\"...\" expression outside call")
# issue #15830
@test Meta.lower(Main, Meta.parse("foo(y = (global x)) = y")) == Expr(:error, "misplaced \"global\" declaration")
# issue #15844
function f15844(x)
x
end
g15844 = let
local function f15844(x::Int32)
2x
end
end
function add_method_to_glob_fn!()
@eval global function f15844(x::Int64)
3x
end
end
add_method_to_glob_fn!()
@test g15844 !== f15844
@test g15844(Int32(1)) == 2
@test f15844(Int32(1)) == 1
@test f15844(Int64(1)) == 3
# issue #15661
@test_throws ParseError Meta.parse("function catch() end")
@test_throws ParseError Meta.parse("function end() end")
@test_throws ParseError Meta.parse("function finally() end")
# PR #16170
@test Meta.lower(Main, Meta.parse("true(x) = x")) == Expr(:error, "invalid function name \"true\"")
@test Meta.lower(Main, Meta.parse("false(x) = x")) == Expr(:error, "invalid function name \"false\"")
# issue #16355
@test Meta.lower(Main, :(f(d:Int...) = nothing)) == Expr(:error, "\"d:Int\" is not a valid function argument name")
# issue #16517
@test (try error(); catch; 0; end) === 0
@test (try error(); catch; false; end) === false # false and true are Bool literals, not variables
@test (try error(); catch; true; end) === true
f16517() = try error(); catch; 0; end
@test f16517() === 0
# issue #16671
@test Meta.parse("1.") === 1.0
isline(x) = isa(x, LineNumberNode)
# issue #16672
@test count(isline, Meta.parse("begin end").args) == 1
@test count(isline, Meta.parse("begin; end").args) == 1
@test count(isline, Meta.parse("begin; x+2; end").args) == 1
@test count(isline, Meta.parse("begin; x+2; y+1; end").args) == 2
# issue #16736
let
local lineoffset0 = @__LINE__() + 1
local lineoffset1 = @__LINE__()
local lineoffset2 = @__LINE__() - 1
@test lineoffset0 == lineoffset1 == lineoffset2
end
# issue #16686
@test Meta.parse("try x
catch; test()
y
end") == Expr(:try,
Expr(:block,
LineNumberNode(1, :none),
:x),
false,
Expr(:block,
LineNumberNode(2, :none),
Expr(:call, :test),
LineNumberNode(3, :none),
:y))
# test that pre 0.5 deprecated syntax is a parse error
@test_throws ParseError Meta.parse("Int [1,2,3]")
@test_throws ParseError Meta.parse("Int [x for x in 1:10]")
@test_throws ParseError Meta.parse("foo (x) = x")
@test_throws ParseError Meta.parse("foo {T<:Int}(x::T) = x")
@test_throws ParseError Meta.parse("Foo .bar")
@test_throws ParseError Meta.parse("import x .y")
@test_throws ParseError Meta.parse("using x .y")
@test_throws ParseError Meta.parse("--x")
@test_throws ParseError Meta.parse("stagedfunction foo(x); end")
@test Meta.parse("A=>B") == Expr(:call, :(=>), :A, :B)
@test Meta.parse("{1,2,3}") == Expr(:braces, 1, 2, 3)
@test Meta.parse("{1 2 3 4}") == Expr(:bracescat, Expr(:row, 1, 2, 3, 4))
@test Meta.parse("{1 2; 3 4}") == Expr(:bracescat, Expr(:row, 1, 2), Expr(:row, 3, 4))
@test Meta.parse("{x for x in 1:10}") == Expr(:braces, :(x for x in 1:10))
@test Meta.parse("{x=>y for (x,y) in zip([1,2,3],[4,5,6])}") == Expr(:braces, :(x=>y for (x,y) in zip([1,2,3],[4,5,6])))
@test Meta.parse("{:a=>1, :b=>2}") == Expr(:braces, Expr(:call, :(=>), QuoteNode(:a), 1),
Expr(:call, :(=>), QuoteNode(:b), 2))
@test Meta.parse("[a,b;c]") == Expr(:vect, Expr(:parameters, :c), :a, :b)
@test Meta.parse("[a,;c]") == Expr(:vect, Expr(:parameters, :c), :a)
@test Meta.parse("a[b,c;d]") == Expr(:ref, :a, Expr(:parameters, :d), :b, :c)
@test Meta.parse("a[b,;d]") == Expr(:ref, :a, Expr(:parameters, :d), :b)
@test_throws ParseError Meta.parse("[a,;,b]")
@test Meta.parse("{a,b;c}") == Expr(:braces, Expr(:parameters, :c), :a, :b)
@test Meta.parse("{a,;c}") == Expr(:braces, Expr(:parameters, :c), :a)
@test Meta.parse("a{b,c;d}") == Expr(:curly, :a, Expr(:parameters, :d), :b, :c)
@test Meta.parse("a{b,;d}") == Expr(:curly, :a, Expr(:parameters, :d), :b)
# this now is parsed as getindex(Pair{Any,Any}, ...)
@test_throws MethodError eval(Meta.parse("(Any=>Any)[]"))
@test_throws MethodError eval(Meta.parse("(Any=>Any)[:a=>1,:b=>2]"))
# issue #16720
let err = try
include_string(@__MODULE__, "module A
function broken()
x[1] = some_func(
end
end")
catch e
e
end
@test err.line == 7
end
# PR #17393
for op in (:.==, :.&, :.|, :.≤)
@test Meta.parse("a $op b") == Expr(:call, op, :a, :b)
end
for op in (:.=, :.+=)
@test Meta.parse("a $op b") == Expr(op, :a, :b)
end
# issue #17489
let m_error, error_out, filename = Base.source_path()
m_error = try @eval method_c6(a::(:A)) = 1; catch e; e; end
error_out = sprint(showerror, m_error)
@test startswith(error_out, "ArgumentError: invalid type for argument a in method definition for method_c6 at $filename:")
m_error = try @eval method_c6(::(:A)) = 2; catch e; e; end
error_out = sprint(showerror, m_error)
@test startswith(error_out, "ArgumentError: invalid type for argument number 1 in method definition for method_c6 at $filename:")
# issue #20614
m_error = try @eval foo(types::NTuple{N}, values::Vararg{Any,N}, c) where {N} = nothing; catch e; e; end
error_out = sprint(showerror, m_error)
@test startswith(error_out, "ArgumentError: Vararg on non-final argument")
end
# issue #7272
@test Meta.lower(Main, Meta.parse("let
global x = 2
local x = 1
end")) == Expr(:error, "variable \"x\" declared both local and global")
#=
@test Meta.lower(Main, Meta.parse("let
local x = 2
local x = 1
end")) == Expr(:error, "local \"x\" declared twice")
@test Meta.lower(Main, Meta.parse("let x
local x = 1
end")) == Expr(:error, "local \"x\" declared twice")
@test Meta.lower(Main, Meta.parse("let x = 2
local x = 1
end")) == Expr(:error, "local \"x\" declared twice")
=#
# issue #23673
@test :(let $([:(x=1),:(y=2)]...); x+y end) == :(let x = 1, y = 2; x+y end)
# make sure front end can correctly print values to error messages
let ex = Meta.lower(Main, Meta.parse("\"a\"=1"))
@test ex == Expr(:error, "invalid assignment location \"\"a\"\"")
end
# make sure that incomplete tags are detected correctly
# (i.e. error messages in src/julia-parser.scm must be matched correctly
# by the code in base/client.jl)
for (str, tag) in Dict("" => :none, "\"" => :string, "#=" => :comment, "'" => :char,
"`" => :cmd, "begin;" => :block, "quote;" => :block,
"let;" => :block, "for i=1;" => :block, "function f();" => :block,
"f() do x;" => :block, "module X;" => :block, "mutable struct X;" => :block,
"struct X;" => :block, "(" => :other, "[" => :other,
"begin" => :other, "quote" => :other,
"let" => :other, "for" => :other, "function" => :other,
"f() do" => :other, "module" => :other, "mutable struct" => :other,
"struct" => :other)
@test Base.incomplete_tag(Meta.parse(str, raise=false)) == tag
end
# meta nodes for optional positional arguments
@test Meta.lower(Main, :(@inline f(p::Int=2) = 3)).args[1].code[end-1].args[3].inlineable
# issue #16096
module M16096
macro iter()
return quote
@inline function foo16096(sub)
it = 1
end
end
end
end
let ex = Meta.lower(M16096, :(@iter))
@test isa(ex, Expr)
end
let ex = Meta.lower(Main, :($M16096.@iter))
@test isa(ex, Expr)
end
let thismodule = @__MODULE__,
ex = Meta.lower(thismodule, :(@M16096.iter))
@test isa(ex, Expr)
@test !isdefined(M16096, :foo16096)
local_foo16096 = Core.eval(@__MODULE__, ex)
@test local_foo16096(2.0) == 1
@test !@isdefined foo16096
@test !@isdefined it
@test !isdefined(M16096, :foo16096)
@test !isdefined(M16096, :it)
@test typeof(local_foo16096).name.module === thismodule
@test typeof(local_foo16096).name.mt.module === thismodule
@test getfield(thismodule, typeof(local_foo16096).name.mt.name) === local_foo16096
@test getfield(thismodule, typeof(local_foo16096).name.name) === typeof(local_foo16096)
@test !isdefined(M16096, typeof(local_foo16096).name.mt.name)
@test !isdefined(M16096, typeof(local_foo16096).name.name)
end
macro f16096()
quote
g16096($(esc(:x))) = 2x
end
end
let g = @f16096
@test g(3) == 6
end
macro f16096_2()
quote
g16096_2(; $(esc(:x))=2) = 2x
end
end
let g = @f16096_2
@test g() == 4
end
# issue #15838
module A15838
macro f() end
const x = :a
end
module B15838
import ..A15838.@f
macro f(x); return :x; end
const x = :b
end
@test A15838.@f() === nothing
@test A15838.@f(1) === :b
let ex = :(A15838.@f(1, 2)), __source__ = LineNumberNode(@__LINE__, Symbol(@__FILE__))
e = try
macroexpand(@__MODULE__, ex)
false
catch ex
ex
end::MethodError
@test e.f === getfield(A15838, Symbol("@f"))
@test e.args === (__source__, @__MODULE__, 1, 2)
end
# issue 10046
for op in ["+", "-", "\$", "|", ".+", ".-", "*", ".*"]
@test_throws ParseError Meta.parse("$op in [+, -]")
end
# issue #17701
@test Meta.lower(Main, :(i==3 && i+=1)) == Expr(:error, "invalid assignment location \"(i == 3) && i\"")
# issue #18667
@test Meta.lower(Main, :(true = 1)) == Expr(:error, "invalid assignment location \"true\"")
@test Meta.lower(Main, :(false = 1)) == Expr(:error, "invalid assignment location \"false\"")
# PR #15592
let str = "[1] [2]"
@test_throws ParseError Meta.parse(str)
end
# issue 15896 and PR 15913
@test_throws ErrorException eval(:(macro test15896(d; y=0) end))
# Issue #16578 (Lowering) mismatch between push_loc and pop_loc
module TestMeta_16578
using Test
function get_expr_list(ex::Core.CodeInfo)
return ex.code::Array{Any,1}
end
function get_expr_list(ex::Expr)
if ex.head == :thunk
return get_expr_list(ex.args[1])
else
return ex.args
end
end
function count_meta_loc(exprs)
push_count = 0
pop_count = 0
for expr in exprs
Meta.isexpr(expr, :meta) || continue
expr = expr::Expr
if expr.args[1] === :push_loc
push_count += 1
elseif expr.args[1] === :pop_loc
pop_count += 1
end
@test push_count >= pop_count
end
return push_count
end
function is_return_ssavalue(ex)
ex isa Core.ReturnNode && ex.val isa Core.SSAValue
end
function is_pop_loc(ex::Expr)
ex.head === :meta && ex.args[1] === :pop_loc
end
# Macros
macro m1()
quote
sin(1)
end
end
include_string(@__MODULE__, """
macro m3()
quote
@m1
end
end
""", "another_file.jl")
m1_exprs = get_expr_list(Meta.lower(@__MODULE__, quote @m1 end))
# Check the expanded expression has expected number of matching push/pop
# and the return is handled correctly
# NOTE: we currently only emit push/pop locations for macros from other files
@test_broken count_meta_loc(m1_exprs) == 1
@test is_return_ssavalue(m1_exprs[end])
let low3 = Meta.lower(@__MODULE__, quote @m3 end)
m3_exprs = get_expr_list(low3)
ci = low3.args[1]::Core.CodeInfo
@test ci.codelocs == [3, 1]
@test is_return_ssavalue(m3_exprs[end])
end
function f1(a)
b = a + 100
b
end
@generated function f2(a)
quote
b = a + 100
b
end
end
f1_ci = code_typed(f1, (Int,), debuginfo=:source)[1][1]
f2_ci = code_typed(f2, (Int,), debuginfo=:source)[1][1]
f1_exprs = get_expr_list(f1_ci)
f2_exprs = get_expr_list(f2_ci)
if Base.JLOptions().can_inline != 0
@test length(f1_ci.linetable) == 3
@test length(f2_ci.linetable) >= 3
else
@test length(f1_ci.linetable) == 2
@test length(f2_ci.linetable) >= 3
end
# Check that string and command literals are parsed to the appropriate macros
@test :(x"s") == :(@x_str "s")
@test :(x"s"flag) == :(@x_str "s" "flag")
@test :(x"s\"`\x\$\\") == :(@x_str "s\"`\\x\\\$\\")
@test :(x`s`) == :(@x_cmd "s")
@test :(x`s`flag) == :(@x_cmd "s" "flag")
@test :(x`s\`"\x\$\\`) == :(@x_cmd "s`\"\\x\\\$\\")
# Check multiline command literals
@test Expr(:macrocall, GlobalRef(Core, Symbol("@cmd")), LineNumberNode(@__LINE__, Symbol(@__FILE__)), "multiline\ncommand\n") == :```
multiline
command
```
macro julia_cmd(s)
Meta.quot(Meta.parse(s))
end
@test julia```
if test + test == test
println(test)
end
```.head == :if
end
# issue 18756
module Mod18756
mutable struct Type
end
end
@test hasmethod(Mod18756.Type, ())
# issue 18002
@test Meta.parse("Foo{T} = Bar{T}") == Expr(:(=), Expr(:curly, :Foo, :T), Expr(:curly, :Bar, :T))
# don't insert push_loc for filename `none` at the top level
let ex = Meta.lower(Main, Meta.parse("""
begin
x = 1
end"""))
@test !any(x->(x == Expr(:meta, :push_loc, :none)), ex.args)
end
# Check qualified string macros
Base.r"regex" == r"regex"
module QualifiedStringMacro
module SubModule
macro x_str(x)
1
end
macro y_cmd(x)
2
end
end
end
@test QualifiedStringMacro.SubModule.x"" === 1
@test QualifiedStringMacro.SubModule.y`` === 2
let ..(x,y) = x + y
@test 3 .. 4 === 7
end
# issue #7669
@test Meta.parse("@a(b=1, c=2)") == Expr(:macrocall, Symbol("@a"), LineNumberNode(1, :none), :(b=1), :(c=2))
# issue #19685
let f = function (x; kw...)
return (x, kw)
end,
g = function (x; a = 2)
return (x, a)
end
@test f(1) == (1, pairs(NamedTuple()))
@test g(1) == (1, 2)
end
# normalization of Unicode symbols (#19464)
let ε=1, μ=2, x=3, î=4, ⋅=5, (-)=6
# issue #5434 (mu vs micro):
@test Meta.parse("\u00b5") === Meta.parse("\u03bc")
@test µ == μ == 2
# NFC normalization of identifiers:
@test Meta.parse("\u0069\u0302") === Meta.parse("\u00ee")
@test î == 4
# latin vs greek ε (#14751)
@test Meta.parse("\u025B") === Meta.parse("\u03B5")
@test ɛ == ε == 1
# middot char · or · vs math dot operator ⋅ (#25098)
@test Meta.parse("\u00b7") === Meta.parse("\u0387") === Meta.parse("\u22c5")
@test (·) == (·) == (⋅) == 5
# minus − vs hyphen-minus - (#26193)
@test Meta.parse("\u2212") === Meta.parse("-")
@test Meta.parse("\u221242") === Meta.parse("-42")
@test Meta.parse("\u2212 42") == Meta.parse("- 42")
@test Meta.parse("\u2212x") == Meta.parse("-x")
@test Meta.parse("x \u2212 42") == Meta.parse("x - 42")
@test Meta.parse("x \u2212= 42") == Meta.parse("x -= 42")
@test Meta.parse("100.0e\u22122") === Meta.parse("100.0E\u22122") === Meta.parse("100.0e-2")
@test Meta.parse("100.0f\u22122") === Meta.parse("100.0f-2")
@test Meta.parse("0x100p\u22128") === Meta.parse("0x100P\u22128") === Meta.parse("0x100p-8")
@test (−) == (-) == 6
end
# issue #8925
let
global const (c8925, d8925) = (3, 4)
end
@test c8925 == 3 && isconst(@__MODULE__, :c8925)
@test d8925 == 4 && isconst(@__MODULE__, :d8925)
# issue #18754: parse ccall as a regular function
@test Meta.parse("ccall([1], 2)[3]") == Expr(:ref, Expr(:call, :ccall, Expr(:vect, 1), 2), 3)
@test Meta.parse("ccall(a).member") == Expr(:., Expr(:call, :ccall, :a), QuoteNode(:member))
# Check that the body of a `where`-qualified short form function definition gets
# a :block for its body
short_where_call = :(f(x::T) where T = T)
@test short_where_call.args[2].head == :block
# `where` with multi-line anonymous functions
let f = function (x::T) where T
T
end
@test f(:x) === Symbol
end
let f = function (x::T, y::S) where T<:S where S
(T,S)
end
@test f(0,1) === (Int,Int)
end
# issue #20541
@test Meta.parse("[a .!b]") == Expr(:hcat, :a, Expr(:call, :.!, :b))
@test Meta.lower(Main, :(a{1} = b)) == Expr(:error, "invalid type parameter name \"1\"")
@test Meta.lower(Main, :(a{2<:Any} = b)) == Expr(:error, "invalid type parameter name \"2\"")
# issue #20653
@test_throws UndefVarError Base.call(::Int) = 1
module Test20653
using Test
struct A
end
call(::A) = 1
const a = A()
@test_throws MethodError a()
@test call(a) === 1
end
# issue #20729
macro m20729()
ex = Expr(:head)
resize!(ex.args, 1)
return ex
end
@test_throws ErrorException Core.eval(@__MODULE__, :(@m20729))
@test Meta.lower(@__MODULE__, :(@m20729)) == Expr(:error, "undefined reference in AST")
macro err20000()
return Expr(:error, "oops!")
end
@test Meta.lower(@__MODULE__, :(@err20000)) == Expr(:error, "oops!")
# issue #20000
@test Meta.parse("@m(a; b=c)") == Expr(:macrocall, Symbol("@m"), LineNumberNode(1, :none),
Expr(:parameters, Expr(:kw, :b, :c)), :a)
# issue #21054
macro make_f21054(T)
quote
$(esc(:f21054))(X::Type{<:$T}) = 1
end
end
@eval @make_f21054 $Array
@test isa(f21054, Function)
g21054(>:) = >:2
@test g21054(-) == -2
# issue #21168
@test Meta.lower(Main, :(a.[1])) == Expr(:error, "invalid syntax \"a.[1]\"")
@test Meta.lower(Main, :(a.{1})) == Expr(:error, "invalid syntax \"a.{1}\"")
# Issue #21225
let abstr = Meta.parse("abstract type X end")
@test Meta.parse("abstract type X; end") == abstr
@test Meta.parse(string("abstract type X", ";"^5, " end")) == abstr
@test Meta.parse("abstract type X\nend") == abstr
@test Meta.parse(string("abstract type X", "\n"^5, "end")) == abstr
end
let prim = Meta.parse("primitive type X 8 end")
@test Meta.parse("primitive type X 8; end") == prim
@test Meta.parse(string("primitive type X 8", ";"^5, " end")) == prim
@test Meta.parse("primitive type X 8\nend") == prim
@test Meta.parse(string("primitive type X 8", "\n"^5, "end")) == prim
end
# issue #21155
@test filter(!isline,
Meta.parse("module B
using ..x,
..y
end").args[3].args)[1] ==
Expr(:using,
Expr(:., :., :., :x),
Expr(:., :., :., :y))
@test filter(!isline,
Meta.parse("module A
using .B,
.C
end").args[3].args)[1] ==
Expr(:using,
Expr(:., :., :B),
Expr(:., :., :C))
# issue #21440
@test Meta.parse("+(x::T,y::T) where {T} = 0") == Meta.parse("(+)(x::T,y::T) where {T} = 0")
@test Meta.parse("a::b::c") == Expr(:(::), Expr(:(::), :a, :b), :c)
# issue #21545
f21545(::Type{<: AbstractArray{T,N} where N}) where T = T
@test f21545(Array{Int8}) === Int8
@test Meta.parse("<:{T} where T") == Expr(:where, Expr(:curly, :(<:), :T), :T)
@test Meta.parse("<:(T) where T") == Expr(:where, Expr(:(<:), :T), :T)
@test Meta.parse("<:{T}(T) where T") == Expr(:where, Expr(:call, Expr(:curly, :(<:), :T), :T), :T)
# issue #21586
macro m21586(x)
Expr(:kw, esc(x), 42)
end
f21586(; @m21586(a), @m21586(b)) = a + b
@test f21586(a=10) == 52
# issue #21604
@test_nowarn @eval module Test21604
const Foo = Any
struct X
x::Foo
end
end
@test Test21604.X(1.0) === Test21604.X(1.0)
# issue #20575
@test_throws ParseError Meta.parse("\"a\"x")
@test_throws ParseError Meta.parse("\"a\"begin end")
@test_throws ParseError Meta.parse("\"a\"begin end\"b\"")
# issue #16427
@test_throws ParseError Meta.parse("for i=1:1 end(3)")
@test_throws ParseError Meta.parse("begin end(3)")
@test_throws ParseError Meta.parse("while false end(3)")
# comment 298107224 on pull #21607
module Test21607
using Test
const Any = Integer
# check that X <: Core.Any, not Integer
mutable struct X; end
@test supertype(X) === Core.Any
# check that return type is Integer
f()::Any = 1.0
@test f() === 1
# check that constructor accepts Any
struct Y
x
end
@test Y(1.0) !== Y(1)
# check that function default argument type is Any
g(x) = x
@test g(1.0) === 1.0
# check that asserted variable type is Integer
@test let
x::Any = 1.0
x
end === 1
# check that unasserted variable type is not Integer
@test let
x = 1.0
x
end === 1.0
end
# issue #16937
@test Meta.lower(Main, :(f(2, a=1, w=3, c=3, w=4, b=2))) ==
Expr(:error, "keyword argument \"w\" repeated in call to \"f\"")
let f(x) =
g(x) = 1
@test functionloc(f(1))[2] > functionloc(f)[2]
end
# let-bound functions with `where` and static parameters
@test let f()::Int = 2.0
f()
end === 2
@test let (f(x::T)::Tuple{Int,Any}) where {T} = (3.0, T)
f("")
end === (3, String)
# operator suffixes
@test Meta.parse("3 +̂ 4") == Expr(:call, :+̂, 3, 4)
@test Meta.parse("3 +̂′ 4") == Expr(:call, :+̂′, 3, 4)
@test Meta.parse("3 +⁽¹⁾ 4") == Expr(:call, :+⁽¹⁾, 3, 4)
@test Meta.parse("3 +₍₀₎ 4") == Expr(:call, :+₍₀₎, 3, 4)
for bad in ('=', '$', ':', "||", "&&", "->", "<:")
@test_throws ParseError Meta.parse("3 $(bad)⁽¹⁾ 4")
end
@test Base.operator_precedence(:+̂) == Base.operator_precedence(:+)
@test Meta.parse("(x)ᵀ") == Expr(:call, :*, :x, :ᵀ)
# issue #19351
# adding return type decl should not affect parse of function body
@test :(t(abc) = 3).args[2] == :(t(abc)::Int = 3).args[2]
# issue #7314
@test Meta.parse("local x, y = 1, 2") == Expr(:local, Expr(:(=),
Expr(:tuple, :x, :y),
Expr(:tuple, 1, 2)))
@test_throws ParseError Meta.parse("[2for i=1:10]")
@test_throws ParseError Meta.parse("[1 for i in 1:2for j in 2]")
@test_throws ParseError Meta.parse("(1 for i in 1:2for j in 2)")
# issue #20441
@test_throws ParseError Meta.parse("[x.2]")
@test_throws ParseError Meta.parse("x.2")
@test Meta.parse("[x;.2]") == Expr(:vcat, :x, 0.2)
# issue #22840
@test Meta.parse("[:a :b]") == Expr(:hcat, QuoteNode(:a), QuoteNode(:b))
# issue #22868
@test_throws ParseError Meta.parse("x@time 2")
@test_throws ParseError Meta.parse("@ time")
# issue #7479
@test Meta.lower(Main, Meta.parse("(true &&& false)")) == Expr(:error, "invalid syntax &false")
# issue #34748
@test Meta.lower(Main, :(&(1, 2))) == Expr(:error, "invalid syntax &(1, 2)")
# if an indexing expression becomes a cat expression, `end` is not special
@test_throws ParseError Meta.parse("a[end end]")
@test_throws ParseError Meta.parse("a[end;end]")
#@test_throws ParseError Meta.parse("a[end;]") # this is difficult to fix
let a = rand(8), i = 3
@test a[[1:i-1; i+1:end]] == a[[1,2,4,5,6,7,8]]
end
# issue #18935
@test [begin
@inbounds for i = 1:10 end
end for i = 1:5] == fill(nothing, 5)
# issue #18912
@test_throws ParseError Meta.parse("(::)")
@test Meta.parse(":(::)") == QuoteNode(Symbol("::"))
@test_throws ParseError Meta.parse("f(::) = ::")
@test Meta.parse("(::A)") == Expr(Symbol("::"), :A)
@test_throws ParseError Meta.parse("(::, 1)")
@test_throws ParseError Meta.parse("(1, ::)")
# issue #18650
let ex = Meta.parse("maximum(@elapsed sleep(1) for k = 1:10)")
@test isa(ex, Expr) && ex.head === :call && ex.args[2].head === :generator &&
ex.args[2].args[1].head === :macrocall
end
# issue #23173
@test_throws ErrorException("invalid module path") eval(:(import $(:.)))
# issue #23234
let
f = function (x=0)
x
end
@test f() == 0
@test f(2) == 2
end
# issue #18730
@test Meta.lower(Main, quote
function f()
local Int
x::Int -> 2
end
end) == Expr(:error, "local variable Int cannot be used in closure declaration")
# some issues with backquote
# preserve QuoteNode and LineNumberNode
@test eval(Expr(:quote, QuoteNode(Expr(:tuple, 1, Expr(:$, :(1+2)))))) == QuoteNode(Expr(:tuple, 1, 3))
@test eval(Expr(:quote, Expr(:line, Expr(:$, :(1+2))))) === LineNumberNode(3, nothing)
# splicing at the top level should be an error
xs23917 = [1,2,3]
@test_throws ErrorException eval(:(:($(xs23917...))))
let ex2 = eval(:(:(:($$(xs23917...)))))
@test ex2 isa Expr
@test_throws ErrorException eval(ex2)
@test eval(:($(xs23917...),)) == (1,2,3) # adding a comma gives a tuple
end
# multi-unquote of splice in nested quote
let xs = [:(1+2), :(3+4), :(5+6)]
ex = quote quote $$(xs...) end end
@test ex.args[2].args[1].args[2].args[2] == :(3 + 4)
ex2 = eval(ex)
@test ex2.args[2:end] == [3,7,11]
end
let x = [3,2,1]
@test :( $(x...,) ) == (3, 2, 1)
@test :( $(x...), ) == Expr(:tuple, 3, 2, 1)
end
# issue #23519
@test Meta.parse("@foo[1]") == Meta.parse("@foo([1])")
@test Meta.parse("@foo[1 2; 3 4]") == Meta.parse("@foo([1 2; 3 4])")
@test Meta.parse("@foo[1] + [2]") == Meta.parse("@foo([1]) + [2]")
@test Meta.parse("@foo [1] + [2]") == Meta.parse("@foo([1] + [2])")
@test Meta.parse("@Mdl.foo[1] + [2]") == Meta.parse("@Mdl.foo([1]) + [2]")
@test Meta.parse("@Mdl.foo [1] + [2]") == Meta.parse("@Mdl.foo([1] + [2])")
# issue #24289
macro m24289()
:(global $(esc(:x24289)) = 1)
end
@test (@macroexpand @m24289) == :(global x24289 = 1)
# parsing numbers with _ and .
@test Meta.parse("1_2.3_4") == 12.34
@test_throws ParseError Meta.parse("1._")
@test_throws ParseError Meta.parse("1._5")
@test_throws ParseError Meta.parse("1e.3")
@test_throws ParseError Meta.parse("1e3.")
@test Meta.parse("2e_1") == Expr(:call, :*, 2, :e_1)
# issue #17705
@test Meta.parse("2e3_") == Expr(:call, :*, 2e3, :_)
@test Meta.parse("2e-3_") == Expr(:call, :*, 2e-3, :_)
@test Meta.parse("2e3_\"x\"") == Expr(:call, :*, 2e3, Expr(:macrocall, Symbol("@__str"), LineNumberNode(1, :none), "x"))
# misplaced top-level expressions
@test_throws ErrorException("syntax: \"\$\" expression outside quote") Core.eval(@__MODULE__, Meta.parse("x->\$x"))
@test Meta.lower(@__MODULE__, Expr(:$, :x)) == Expr(:error, "\"\$\" expression outside quote")
@test Meta.lower(@__MODULE__, :(x->import Foo)) == Expr(:error, "\"import\" expression not at top level")
@test Meta.lower(@__MODULE__, :(x->module Foo end)) == Expr(:error, "\"module\" expression not at top level")
@test Meta.lower(@__MODULE__, :(x->struct Foo end)) == Expr(:error, "\"struct\" expression not at top level")
@test Meta.lower(@__MODULE__, :(x->abstract type Foo end)) == Expr(:error, "\"abstract type\" expression not at top level")
# caused by #24538. forms that lower to `call` should wrap with `call` before
# recursively calling expand-forms.
@test [(0,0)... 1] == [0 0 1]
@test Float32[(0,0)... 1] == Float32[0 0 1]
@testset "raw_str macro" begin
@test raw"$" == "\$"
@test raw"\n" == "\\n"
@test raw"\t" == "\\t"
s1 = raw"""
lorem ipsum\n
$x = 1$
"""
s2 = """
lorem ipsum\\n
\$x = 1\$
"""
@test s1 == s2
# issue #22926
@test raw"\\" == "\\"
@test raw"\\\\" == "\\\\"
@test raw"\"" == "\""
@test raw"\\\"" == "\\\""
@test raw"\\x\\" == "\\\\x\\"
@test raw"x \\\" y" == "x \\\" y"
@test raw"x \\\ y" == "x \\\\\\ y"
end
@test_throws ParseError("expected \"}\" or separator in arguments to \"{ }\"; got \"V)\"") Meta.parse("f(x::V) where {V) = x")
@test_throws ParseError("expected \"]\" or separator in arguments to \"[ ]\"; got \"1)\"") Meta.parse("[1)")
# issue #9972
@test Meta.lower(@__MODULE__, :(f(;3))) == Expr(:error, "invalid keyword argument syntax \"3\"")
# issue #25055, make sure quote makes new Exprs
function f25055()
x = quote end
return x
end
@test f25055() !== f25055()
# issue #25391
@test Meta.parse("0:-1, \"\"=>\"\"") == Meta.parse("(0:-1, \"\"=>\"\")") ==
Expr(:tuple, Expr(:call, :(:), 0, -1), Expr(:call, :(=>), "", ""))
@test Meta.parse("a => b = c") == Expr(:(=), Expr(:call, :(=>), :a, :b), Expr(:block, LineNumberNode(1, :none), :c))
@test Meta.parse("a = b => c") == Expr(:(=), :a, Expr(:call, :(=>), :b, :c))
# issue #16239, hygiene of rest keyword name
macro foo16239(x)
:($(esc(:blah))(args...; kwargs...) = $(esc(x)))
end
function bar16239()
kwargs = 0
f = @foo16239 kwargs
f()
end
@test bar16239() == 0
# lowering of <: and >:
let args = (Int, Any)
@test <:(args...)
@test >:(reverse(args)...)
end
# issue #25947
let getindex = 0, setindex! = 1, colon = 2, vcat = 3, hcat = 4, hvcat = 5
a = [10,9,8]
@test a[2] == 9
@test 1:2 isa AbstractRange
a[1] = 1
@test a[1] == 1
@test length([1; 2]) == 2
@test size([0 0]) == (1, 2)
@test size([1 2; 3 4]) == (2, 2)
end
# issue #25020
@test_throws ParseError Meta.parse("using Colors()")
let ex = Meta.parse("md\"x\"
f(x) = x", 1)[1] # custom string literal is not a docstring
@test Meta.isexpr(ex, :macrocall)
@test ex.args[1] === Symbol("@md_str")
@test length(ex.args) == 3
end
let ex = Meta.parse("@doc raw\"
\"
f(x) = x")
@test Meta.isexpr(ex, :macrocall)
@test ex.args[1] === Symbol("@doc")
@test length(ex.args) == 4
@test Meta.isexpr(ex.args[4], :(=))
end
let ex = Meta.parse("@doc raw\"
\"
f(x) = x", 1)[1]
@test Meta.isexpr(ex, :macrocall)
@test ex.args[1] === Symbol("@doc")
@test length(ex.args) == 3
end
@test Meta.parse("\"x\"
# extra line, not a doc string
f(x) = x", 1)[1] === "x"
@test Meta.parse("\"x\"
f(x) = x", 1)[1] === "x"
# issue #26137
# cases where parens enclose argument lists
@test Meta.parse("-()^2") == Expr(:call, :^, Expr(:call, :-), 2)
@test Meta.parse("-(x,)^2") == Expr(:call, :^, Expr(:call, :-, :x), 2)
@test Meta.parse("-(x,;)^2") == Expr(:call, :^, Expr(:call, :-, Expr(:parameters), :x), 2)
@test Meta.parse("-(;x)^2") == Expr(:call, :^, Expr(:call, :-, Expr(:parameters, :x)), 2)
@test Meta.parse("-(x,y)^2") == Expr(:call, :^, Expr(:call, :-, :x, :y), 2)
@test Meta.parse("-(x...)^2") == Expr(:call, :^, Expr(:call, :-, Expr(:(...), :x)), 2)
@test Meta.parse("-(x...;)^2") == Expr(:call, :^, Expr(:call, :-, Expr(:parameters), Expr(:(...), :x)), 2)
@test Meta.parse("-(x...;)") == Expr(:call, :-, Expr(:parameters), Expr(:(...), :x))
# cases where parens are just grouping
@test Meta.parse("-(x)^2") == Expr(:call, :-, Expr(:call, :^, :x, 2))
@test Meta.parse("-(a=1)^2") == Expr(:call, :-, Expr(:call, :^, Expr(:(=), :a, 1), 2))
@test Meta.parse("-(x;y)^2") == Expr(:call, :-, Expr(:call, :^, Expr(:block, :x, LineNumberNode(1,:none), :y), 2))
@test Meta.parse("-(;)^2") == Expr(:call, :^, Expr(:call, :-, Expr(:parameters)), 2)
@test Meta.parse("-(;;;;)^2") == Expr(:call, :-, Expr(:call, :^, Expr(:block), 2))
@test Meta.parse("-(x;;;)^2") == Expr(:call, :-, Expr(:call, :^, Expr(:block, :x), 2))
@test Meta.parse("+((1,2))") == Expr(:call, :+, Expr(:tuple, 1, 2))
@test_throws ParseError("space before \"(\" not allowed in \"+ (\" at none:1") Meta.parse("1 -+ (a=1, b=2)")
# issue #29781
@test_throws ParseError("space before \"(\" not allowed in \"sin. (\" at none:1") Meta.parse("sin. (1)")
# Parser errors for disallowed space contain line numbers
@test_throws ParseError("space before \"[\" not allowed in \"f() [\" at none:2") Meta.parse("\nf() [i]")
@test_throws ParseError("space before \"(\" not allowed in \"f() (\" at none:2") Meta.parse("\nf() (i)")
@test_throws ParseError("space before \".\" not allowed in \"f() .\" at none:2") Meta.parse("\nf() .i")
@test_throws ParseError("space before \"{\" not allowed in \"f() {\" at none:2") Meta.parse("\nf() {i}")
@test_throws ParseError("space before \"m\" not allowed in \"@ m\" at none:2") Meta.parse("\n@ m")
@test_throws ParseError("space before \".\" not allowed in \"a .\" at none:2") Meta.parse("\nusing a .b")
@test_throws ParseError("space before \".\" not allowed in \"a .\" at none:2") Meta.parse("\nusing a .b")
@test_throws ParseError("space before \"(\" not allowed in \"+ (\" at none:2") Meta.parse("\n+ (x, y)")
@test Meta.parse("1 -+(a=1, b=2)") == Expr(:call, :-, 1,
Expr(:call, :+, Expr(:kw, :a, 1), Expr(:kw, :b, 2)))
@test Meta.parse("-(2)(x)") == Expr(:call, :*, Expr(:call, :-, 2), :x)
@test Meta.parse("-(x)y") == Expr(:call, :*, Expr(:call, :-, :x), :y)
@test Meta.parse("-(x,)y") == Expr(:call, :*, Expr(:call, :-, :x), :y)
@test Meta.parse("-(f)(x)") == Expr(:call, :-, Expr(:call, :f, :x))
@test Meta.parse("-(2)(x)^2") == Expr(:call, :*, Expr(:call, :-, 2), Expr(:call, :^, :x, 2))
@test Meta.parse("Y <- (x->true)(X)") ==
Expr(:call, :<, :Y,
Expr(:call, :-, Expr(:call, Expr(:->, :x, Expr(:block, LineNumberNode(1,:none), true)),
:X)))
# issue #27641
@test Meta.parse("√3x") == Expr(:call, :*, Expr(:call, :√, 3), :x)
@test Meta.parse("2^√3x") == Expr(:call, :^, 2, Expr(:call, :*, Expr(:call, :√, 3), :x))
@test Meta.parse("√2^3") == Expr(:call, :√, Expr(:call, :^, 2, 3))
@test Meta.parse("-√2") == Expr(:call, :-, Expr(:call, :√, 2))
@test Meta.parse("√3x^2") == Expr(:call, :*, Expr(:call, :√, 3), Expr(:call, :^, :x, 2))
@test Meta.parse("-3x^2") == Expr(:call, :*, -3, Expr(:call, :^, :x, 2))
@test_throws ParseError Meta.parse("2!3")
# issue #27914
@test Meta.parse("2f(x)") == Expr(:call, :*, 2, Expr(:call, :f, :x))
@test Meta.parse("f(x)g(x)") == Expr(:call, :*, Expr(:call, :f, :x), Expr(:call, :g, :x))
@test Meta.parse("2f(x)g(x)") == Expr(:call, :*, 2, Expr(:call, :f, :x), Expr(:call, :g, :x))
@test Meta.parse("f(x)g(x)h(x)") == Expr(:call, :*, Expr(:call, :f, :x), Expr(:call, :g, :x), Expr(:call, :h, :x))
@test Meta.parse("2(x)") == Expr(:call, :*, 2, :x)
@test Meta.parse("2(x)y") == Expr(:call, :*, 2, :x, :y)
@test_throws ParseError Meta.parse("a.: b")
@test Meta.parse("a.:end") == Expr(:., :a, QuoteNode(:end))
@test Meta.parse("a.:catch") == Expr(:., :a, QuoteNode(:catch))
@test Meta.parse("a.end") == Expr(:., :a, QuoteNode(:end))
@test Meta.parse("a.catch") == Expr(:., :a, QuoteNode(:catch))
@test Meta.parse("a.function") == Expr(:., :a, QuoteNode(:function))
# issue #25994
@test Meta.parse("[a\nfor a in b]") == Expr(:comprehension, Expr(:generator, :a, Expr(:(=), :a, :b)))
# issue #27529
let len = 10
@test [ i for i in 0:len -1 ] == [0:9;]
end
# Module name cannot be a reserved word.
@test_throws ParseError Meta.parse("module module end")
@test Meta.lower(@__MODULE__, :(global true)) == Expr(:error, "invalid syntax in \"global\" declaration")
@test Meta.lower(@__MODULE__, :(let ccall end)) == Expr(:error, "invalid identifier name \"ccall\"")
@test Meta.lower(@__MODULE__, :(cglobal = 0)) == Expr(:error, "invalid assignment location \"cglobal\"")
# issue #26507
@test Meta.parse("@try x") == Expr(:macrocall, Symbol("@try"), LineNumberNode(1,:none), :x)
@test Meta.parse("@catch x") == Expr(:macrocall, Symbol("@catch"), LineNumberNode(1,:none), :x)
@test Meta.parse("@\$x") == Expr(:macrocall, Symbol("@\$"), LineNumberNode(1,:none), :x)
# issue #26717
@test Meta.lower(@__MODULE__, :( :(:) = 2 )) == Expr(:error, "invalid assignment location \":(:)\"")
# issue #27690
# previously, this was allowed since it thought `end` was being used for indexing.
# however the quote should disable that context.
@test_throws ParseError Meta.parse("Any[:(end)]")
# issue #17781
let ex = Meta.lower(@__MODULE__, Meta.parse("
A = function (s, o...)
f(a, b) do
end
end,
B = function (s, o...)
f(a, b) do
end
end"))
@test isa(ex, Expr) && ex.head === :error
@test ex.args[1] == """
invalid assignment location "function (s, o...)
# none, line 2
# none, line 3
f(a, b) do
# none, line 4
end
end\""""
end
# issue #15229
@test Meta.lower(@__MODULE__, :(function f(x); local x; 0; end)) ==
Expr(:error, "local variable name \"x\" conflicts with an argument")
@test Meta.lower(@__MODULE__, :(function f(x); begin; local x; 0; end; end)) ==
Expr(:error, "local variable name \"x\" conflicts with an argument")
# issue #27964
a27964(x) = Any[x for x in []]
@test a27964(0) == Any[]
function b27964(x)
local y
let
local x
x = 2
y = x
end
return (x, y)
end
@test b27964(8) == (8, 2)
function c27964(x)
local y
let x = 2
y = x
end
return (x, y)
end
@test c27964(8) == (8, 2)
# issue #26739
let exc = try Core.eval(@__MODULE__, :(sin.[1])) catch exc ; exc end
@test exc isa ErrorException
@test startswith(exc.msg, "syntax: invalid syntax \"sin.[1]\"")
end
# issue #26873
f26873 = 0
try
include_string(@__MODULE__, """f26873."a" """)
@test false
catch e
@test e isa LoadError
@test e.error isa MethodError
end
@test Meta.lower(@__MODULE__, :(if true; break; end for i = 1:1)) == Expr(:error, "break or continue outside loop")
@test Meta.lower(@__MODULE__, :([if true; break; end for i = 1:1])) == Expr(:error, "break or continue outside loop")
@test Meta.lower(@__MODULE__, :(Int[if true; break; end for i = 1:1])) == Expr(:error, "break or continue outside loop")
@test Meta.lower(@__MODULE__, :([if true; continue; end for i = 1:1])) == Expr(:error, "break or continue outside loop")
@test Meta.lower(@__MODULE__, :(Int[if true; continue; end for i = 1:1])) == Expr(:error, "break or continue outside loop")
@test Meta.lower(@__MODULE__, :(return 0 for i=1:2)) == Expr(:error, "\"return\" not allowed inside comprehension or generator")
@test Meta.lower(@__MODULE__, :([ return 0 for i=1:2 ])) == Expr(:error, "\"return\" not allowed inside comprehension or generator")
@test Meta.lower(@__MODULE__, :(Int[ return 0 for i=1:2 ])) == Expr(:error, "\"return\" not allowed inside comprehension or generator")
@test [ ()->return 42 for i = 1:1 ][1]() == 42
@test Function[ identity() do x; return 2x; end for i = 1:1 ][1](21) == 42
# issue #27155
macro test27155()
quote
MyTest27155{Arg} = Tuple{Arg}
MyTest27155
end
end
@test @test27155() == (Tuple{T} where T)
# issue #27521
macro test27521(f, x)
:(($(esc(f)), $x))
end
let ex = Meta.parse("@test27521(2) do y; y; end")
fex = Expr(:(->), Expr(:tuple, :y), Expr(:block, LineNumberNode(1,:none), :y))
@test ex == Expr(:do, Expr(:macrocall, Symbol("@test27521"), LineNumberNode(1,:none), 2),
fex)
@test macroexpand(@__MODULE__, ex) == Expr(:tuple, fex, 2)
end
# issue #27129
f27129(x = 1) = (@Base._inline_meta; x)
for meth in methods(f27129)
@test ccall(:jl_uncompress_ir, Any, (Any, Ptr{Cvoid}, Any), meth, C_NULL, meth.source).inlineable
end
# issue #27710
struct Foo27710{T} end
function test27710()
types(::Foo27710{T}) where T = T
T = types(Foo27710{Int64}())
end
@test test27710() === Int64
# issue #29064
struct X29064
X29064::Int
end
@test X29064(1) isa X29064
# issue #27268
function f27268()
g(col::AbstractArray{<:Real}) = col
end
function f27268_2()
g(col::AbstractArray{T} where T<:Real) = col
end
@test f27268()([1]) == [1]
@test f27268_2()([1]) == [1]
@test_throws MethodError f27268()([""])
@test_throws MethodError f27268_2()([""])
@test_throws ErrorException("syntax: local variable x cannot be used in closure declaration") @eval begin
function g27268()
x = 1
h(::Val{x}) = 1
end
end
types27268 = (Int64,Int8)
function h27268()
function g(::Union{map(t->Array{t,N},types27268)...} where N)
end
end
@test first(methods(h27268())).sig == Tuple{typeof(h27268()), Union{Array{Int64,N}, Array{Int8,N}} where N}
let val(::Type{Val{X}}) where {X} = X, f
function f()
function g(::Val{x->2x})
end
end
@test val(first(methods(f())).sig.parameters[2])(21) == 42
end
# issue #27807
module A27807
macro m()
quote
function foo(x::T, y::S) where T<:Number where S<:Number
return one(T), zero(S)
end
end
end
end
@test A27807.@m()(1,1.0) === (1, 0.0)
# issue #27896 / #29429
@test Meta.lower(@__MODULE__, quote
function foo(a::A, b::B) where {A,B}
B = eltype(A)
return convert(B, b)
end
end) == Expr(:error, "local variable name \"B\" conflicts with a static parameter")
# issue #32620
@test Meta.lower(@__MODULE__, quote
function foo(a::T) where {T}
for i = 1:1
T = 0
end
end
end) == Expr(:error, "local variable name \"T\" conflicts with a static parameter")
function f32620(x::T) where T
local y
let T = 3
T = 2
y = T
end
return (T, y)
end
@test f32620(0) === (Int, 2)
# issue #28044
code28044(x) = 10x
begin
function f28044(::Val{code28044}) where code28044
code28044(2)
end
# make sure this assignment to `code28044` doesn't add an implicit-global
Val{code28044} where code28044
end
@test f28044(Val(identity)) == 2
# issue #28244
macro foo28244(sym)
x = :(bar())
push!(x.args, Expr(sym))
x
end
@test (@macroexpand @foo28244(kw)) == Expr(:call, GlobalRef(@__MODULE__,:bar), Expr(:kw))
@test eval(:(@macroexpand @foo28244($(Symbol("let"))))) == Expr(:error, "malformed expression")
# #16356
@test_throws ParseError Meta.parse("0xapi")
# #22523 #22712
@test_throws ParseError Meta.parse("a?b:c")
@test_throws ParseError Meta.parse("a ?b:c")
@test_throws ParseError Meta.parse("a ? b:c")
@test_throws ParseError Meta.parse("a ? b :c")
@test_throws ParseError Meta.parse("?")
# #13079
@test Meta.parse("1<<2*3") == :((1<<2)*3)
# #19987
@test_throws ParseError Meta.parse("try ; catch f() ; end")
# #23076
@test :([1,2;]) == Expr(:vect, Expr(:parameters), 1, 2)
# #24452
@test Meta.parse("(a...)") == Expr(Symbol("..."), :a)
# #19324
@test_throws UndefVarError(:x) eval(:(module M19324
x=1
for i=1:10
x += i
end
end))
# #22314
function f22314()
i = 0
for i = 1:10
end
i
end
@test f22314() == 0
module M22314
i = 0
for i = 1:10
end
end
@test M22314.i == 0
# #6080
@test Meta.lower(@__MODULE__, :(ccall(:a, Cvoid, (Cint,), &x))) == Expr(:error, "invalid syntax &x")
@test Meta.lower(@__MODULE__, :(f(x) = (y = x + 1; ccall((:a, y), Cvoid, ())))) == Expr(:error, "ccall function name and library expression cannot reference local variables")
@test_throws ParseError Meta.parse("x.'")
@test_throws ParseError Meta.parse("0.+1")
# #24221
@test Meta.isexpr(Meta.lower(@__MODULE__, :(a=_)), :error)
for ex in [:([x=1]), :(T{x=1})]
@test Meta.lower(@__MODULE__, ex) == Expr(:error, string("misplaced assignment statement in \"", ex, "\""))
end
# issue #28576
@test Meta.isexpr(Meta.parse("1 == 2 ?"), :incomplete)
@test Meta.isexpr(Meta.parse("1 == 2 ? 3 :"), :incomplete)
# issue #28991
eval(Expr(:toplevel,
Expr(:module, true, :Mod28991,
Expr(:block,
Expr(:export, :Inner),
Expr(:abstract, :Inner)))))
@test names(Mod28991) == Symbol[:Inner, :Mod28991]
# issue #28593
macro a28593()
quote
abstract type A28593{S<:Real, V<:AbstractVector{S}} end
end
end
macro b28593()
quote
struct B28593{S<:Real, V<:AbstractVector{S}} end
end
end
macro c28593()
quote
primitive type C28593{S<:Real, V<:AbstractVector{S}} 32 end
end
end
@a28593
@b28593
@c28593
@test A28593.var.name === :S
@test B28593.var.name === :S
@test C28593.var.name === :S
# issue #25955
macro noeffect25955(e)
return e
end
struct foo25955
end
@noeffect25955 function (f::foo25955)()
42
end
@test foo25955()() == 42
# issue #28833
macro m28833(expr)
esc(:(global a28833))
end
@m28833 1+1
# issue #28900
macro foo28900(x)
quote
$x
end
end
f28900(; kwarg) = kwarg
let g = @foo28900 f28900(kwarg = x->2x)
@test g(10) == 20
end
# issue #26037
x26037() = 10
function test_26037()
[x26037() for _ in 1:3]
for x26037 in 1:3
x26037 += x26037
end
end
@test test_26037() === nothing # no UndefVarError
# range and interval operators
@test Meta.parse("1…2") == Expr(:call, :…, 1, 2)
@test Meta.parse("1⁝2") == Expr(:call, :⁝, 1, 2)
@test Meta.parse("1..2") == Expr(:call, :.., 1, 2)
# we don't parse chains of these since the associativity and meaning aren't clear
@test_throws ParseError Meta.parse("1..2..3")
# issue #30048
@test Meta.isexpr(Meta.lower(@__MODULE__, :(for a in b
c = try
try
d() do
if GC.@preserve c begin
end
end
end
finally
end
finally
end
end)), :thunk)
# issue #28506
@test Meta.isexpr(Meta.parse("1,"), :incomplete)
@test Meta.isexpr(Meta.parse("1, "), :incomplete)
@test Meta.isexpr(Meta.parse("1,\n"), :incomplete)
@test Meta.isexpr(Meta.parse("1, \n"), :incomplete)
@test_throws LoadError include_string(@__MODULE__, "1,")
@test_throws LoadError include_string(@__MODULE__, "1,\n")
# issue #30062
let er = Meta.lower(@__MODULE__, quote if false end, b+=2 end)
@test Meta.isexpr(er, :error)
@test startswith(er.args[1], "invalid multiple assignment location \"if")
end
# issue #30030
let x = 0
@test (a=1, b=2, c=(x=3)) == (a=1, b=2, c=3)
@test x == 3
end
function captured_and_shadowed_sp(x::T) where T
function g()
(T,
let T = 0
T
end)
end
g()
end
@test captured_and_shadowed_sp(1) === (Int, 0)
function capture_with_conditional_label()
@goto foo
x = 1
if false
@label foo
end
return y->x
end
let f = capture_with_conditional_label() # should not throw
@test_throws UndefVarError(:x) f(0)
end
# `_` should not create a global (or local)
f30656(T) = (t, _)::Pair -> t >= T
f30656(10)(11=>1)
@test !isdefined(@__MODULE__, :_)
# issue #30772
function f30772(a::T) where T
function ()
function (b::T)
end
end
end
let f = f30772(1.0), g = f()
@test g(1.0) === nothing
@test_throws MethodError g(1)
end
@test_throws ErrorException("syntax: malformed \"using\" statement") eval(Expr(:using, :X))
@test_throws ErrorException("syntax: malformed \"import\" statement") eval(Expr(:import, :X))
# eval'ing :const exprs
eval(Expr(:const, :_var_30877))
@test !isdefined(@__MODULE__, :_var_30877)
@test isconst(@__MODULE__, :_var_30877)
# anonymous kw function in value position at top level
f30926 = function (;k=0)
k
end
@test f30926(k=2) == 2
if false
elseif false
g30926(x) = 1
end
@test !isdefined(@__MODULE__, :g30926)
@testset "closure conversion in testsets" begin
p = (2, 3, 4)
@test p == (2, 3, 4)
allocs = (() -> @allocated identity(p))()
@test allocs == 0
end
@test_throws UndefVarError eval(Symbol(""))
@test_throws UndefVarError eval(:(1+$(Symbol(""))))
# issue #31404
f31404(a, b; kws...) = (a, b, values(kws))
@test f31404(+, (Type{T} where T,); optimize=false) === (+, (Type,), (optimize=false,))
# issue #28992
macro id28992(x) x end
@test @id28992(1 .+ 2) == 3
@test Meta.isexpr(Meta.lower(@__MODULE__, :(@id28992((.+)(a,b) = 0))), :error)
@test @id28992([1] .< [2] .< [3]) == [true]
@test @id28992(2 ^ -2) == 0.25
@test @id28992(2 .^ -2) == 0.25
# issue #32121
@test @id28992((a=1, b=2)) === (a=1, b=2)
a32121 = 8
b32121 = 9
@test @id28992((a32121=a32121, b32121=b32121)) === (a32121=8, b32121=9)
# issue #31596
f31596(x; kw...) = x
@test f31596((a=1,), b = 1.0) === (a=1,)
# issue #32325
let
struct a32325 end
a32325(x) = a32325()
end
@test a32325(0) === a32325()
@test Meta.lower(Main, :(struct A; A() = new{Int}(); end)) == Expr(:error, "too many type parameters specified in \"new{...}\"")
@test Meta.lower(Main, :(struct A{T, S}; A() = new{Int}(); end)) == Expr(:error, "too few type parameters specified in \"new{...}\"")
# issue #32467
let f = identity(identity() do
x = 0
@inbounds for i = 1:2
x += i
end
x
end)
@test f() == 3
end
# issue #32499
x32499 = begin
struct S32499
function S32499(; x=1)
x
end
end
S32499(x=2)
end
@test x32499 == 2
# issue #32626
@test Meta.parse("'a'..'b'") == Expr(:call, :(..), 'a', 'b')
@test Meta.parse(":a..:b") == Expr(:call, :(..), QuoteNode(:a), QuoteNode(:b))
# Non-standard identifiers (PR #32408)
@test Meta.parse("var\"#\"") === Symbol("#")
@test Meta.parse("var\"true\"") === Symbol("true")
@test Meta.parse("var\"false\"") === Symbol("false")
@test_throws ParseError Meta.parse("var\"#\"x") # Reject string macro-like suffix
@test_throws ParseError Meta.parse("var \"#\"")
@test_throws ParseError Meta.parse("var\"for\" i = 1:10; end")
# A few cases which would be ugly to deal with if var"#" were a string macro:
@test Meta.parse("var\"#\".var\"a-b\"") == Expr(:., Symbol("#"), QuoteNode(Symbol("a-b")))
@test Meta.parse("export var\"#\"") == Expr(:export, Symbol("#"))
@test Base.remove_linenums!(Meta.parse("try a catch var\"#\" b end")) ==
Expr(:try, Expr(:block, :a), Symbol("#"), Expr(:block, :b))
@test Meta.parse("(var\"function\" = 1,)") == Expr(:tuple, Expr(:(=), Symbol("function"), 1))
# Non-standard identifiers require parens for string interpolation
@test Meta.parse("\"\$var\\\"#\\\"\"") == Expr(:string, :var, "\"#\"")
@test Meta.parse("\"\$(var\"#\")\"") == Expr(:string, Symbol("#"))
# Stream positioning after parsing var
@test Meta.parse("var'", 1, greedy=false) == (:var, 4)
# quoted names in import (#33158)
@test Meta.parse("import Base.:+") == :(import Base.+)
@test Meta.parse("import Base.Foo.:(==).bar") == :(import Base.Foo.==.bar)
# issue #33135
function f33135(x::T) where {C1, T}
let C1 = 1, C2 = 2
C1
end
end
@test f33135(0) == 1
# issue #33227
@test Meta.isexpr(Meta.lower(Main, :((@label a; @goto a))), :thunk)
# issue #33250
@test Meta.lower(Main, :(f(b=b...))) == Expr(:error, "\"...\" expression cannot be used as keyword argument value")
@test Meta.lower(Main, :(f(;a=a,b=b...))) == Expr(:error, "\"...\" expression cannot be used as keyword argument value")
@test Meta.lower(Main, :((a=a,b=b...))) == Expr(:error, "\"...\" expression cannot be used as named tuple field value")
@test Meta.lower(Main, :(f(;a...,b...)=0)) == Expr(:error, "invalid \"...\" on non-final keyword argument")
@test Meta.lower(Main, :(f(;a...,b=0)=0)) == Expr(:error, "invalid \"...\" on non-final keyword argument")
# issue #31547
@test Meta.lower(Main, :(a := 1)) == Expr(:error, "unsupported assignment operator \":=\"")
# issue #33841
let a(; b) = b
@test a(b=3) == 3
end
# issue #33987
@test_deprecated eval(quote
# This syntax is deprecated. This test should be removed when the
# deprecation is.
f33987(args::(Vararg{Any, N} where N); kwargs...) = args
@test f33987(1,2,3) === (1,2,3)
end)
macro id_for_kwarg(x); x; end
Xo65KdlD = @id_for_kwarg let x = 1
function f(; x)
x
end
end
@test_throws UndefKeywordError(:x) Xo65KdlD()
i0xb23hG = @id_for_kwarg let x = 1
function f(; x=2)
x
end
end
@test i0xb23hG() == 2
@test i0xb23hG(x=10) == 10
accepts__kwarg(;z1) = z1
@test (@id_for_kwarg let z1 = 41; accepts__kwarg(; z1); end) == 41
@test @eval let
(z,)->begin
$(Expr(:inbounds, true))
$(Expr(:inbounds, :pop))
end
pop = 1
end == 1
# issue #29982
@test Meta.parse("'a'") == 'a'
@test Meta.parse("'\U0061'") == 'a'
test_parseerror("''", "invalid empty character literal")
test_parseerror("'abc'", "character literal contains multiple characters")
# optional soft scope: #28789, #33864
@test @eval begin
$(Expr(:softscope, true))
x28789 = 0 # new global included in same expression
for i = 1:2
x28789 += i
end
x28789
end == 3
y28789 = 1 # new global defined in separate top-level input
@eval begin
$(Expr(:softscope, true))
for i = 1:10
y28789 += i
end
end
@test y28789 == 56
@eval begin
$(Expr(:softscope, true))
for i = 10:10
z28789 = i
end
@test z28789 == 10
z28789 = 0 # new global assigned after loop but in same soft scope
end
@eval begin
$(Expr(:softscope, true))
let y28789 = 0 # shadowing with let
y28789 = 1
end
end
@test y28789 == 56
@eval begin
$(Expr(:softscope, true))
let
y28789 = -8 # let is always a hard scope
end
end
@test y28789 == 56
@eval begin
$(Expr(:softscope, true))
for y28789 in 0:0
for x in 2:2
for y in 3:3
z28789 = 42 # assign to global despite several loops
end
end
end
end
@test z28789 == 42
@eval begin
$(Expr(:softscope, true))
let x = 0
ww28789 = 88 # not global
let y = 3
ww28789 = 89
end
@test ww28789 == 89
end
end
@test !@isdefined(ww28789)
@eval begin
$(Expr(:softscope, true))
for x = 0
ww28789 = 88 # not global
for y = 3
ww28789 = 89
end
@test ww28789 == 89
end
end
@test !@isdefined(ww28789)
@eval begin
$(Expr(:softscope, true))
function f28789()
z28789 = 43
end
f28789()
end
@test z28789 == 42
# issue #38650, `struct` should always be a hard scope
f38650() = 0
@eval begin
$(Expr(:softscope, true))
struct S38650
f38650() = 1
end
end
@test f38650() == 0
# issue #37126
@test isempty(Test.collect_test_logs() do
include_string(@__MODULE__, """
function foo37126()
f(lhs::Integer, rhs::Integer) = nothing
f(lhs::Integer, rhs::AbstractVector{<:Integer}) = nothing
return f
end
struct Bar37126{T<:Real, P<:Real} end
""")
end[1])
# issue #34673
# check that :toplevel still returns a value when nested inside something else
@test eval(Expr(:block, 0, Expr(:toplevel, 43))) == 43
# issue #16594
@test Meta.parse("@x a + \nb") == Meta.parse("@x a +\nb")
@test [1 +
1] == [2]
@test [1 +1] == [1 1]
@testset "issue #16594" begin
# note for the macro tests, order is important
# because the line number is included as part of the expression
# (i.e. both macros must start on the same line)
@test :(@test((1+1) == 2)) == :(@test 1 +
1 == 2)
@test :(@x 1 +1 -1) == :(@x(1, +1, -1))
@test :(@x 1 + 1 -1) == :(@x(1+1, -1))
@test :(@x 1 + 1 - 1) == :(@x(1 + 1 - 1))
@test :(@x(1 + 1 - 1)) == :(@x 1 +
1 -
1)
@test :(@x(1 + 1 + 1)) == :(@x 1 +
1 +
1)
@test :([x .+
y]) == :([x .+ y])
end
# line break in : expression disallowed
@test_throws Meta.ParseError Meta.parse("[1 :\n2] == [1:2]")
# added ⟂ to operator precedence (#24404)
@test Meta.parse("a ⟂ b ⟂ c") == Expr(:comparison, :a, :⟂, :b, :⟂, :c)
@test Meta.parse("a ⟂ b ∥ c") == Expr(:comparison, :a, :⟂, :b, :∥, :c)
# issue 39350
@testset "binary ⫪ and ⫫" begin
@test Meta.parse("a ⫪ b") == Expr(:call, :⫪, :a, :b)
@test Meta.parse("a ⫫ b") == Expr(:call, :⫫, :a, :b)
end
# only allow certain characters after interpolated vars (#25231)
@test Meta.parse("\"\$x෴ \"",raise=false) == Expr(:error, "interpolated variable \$x ends with invalid character \"෴\"; use \"\$(x)\" instead.")
@test Base.incomplete_tag(Meta.parse("\"\$foo", raise=false)) == :string
@testset "issue #30341" begin
@test Meta.parse("x .~ y") == Expr(:call, :.~, :x, :y)
# Ensure dotting binary doesn't break dotting unary
@test Meta.parse(".~[1,2]") == Expr(:call, :.~, Expr(:vect, 1, 2))
end
@testset "operator precedence correctness" begin
ops = map(Symbol, split("= => || && --> < <| |> : + * // << ^ :: ."))
for f in ops, g in ops
f == g && continue
pf = Base.operator_precedence(f)
pg = Base.operator_precedence(g)
@test pf != pg
expr = Meta.parse("x$(f)y$(g)z")
@test expr == Meta.parse(pf > pg ? "(x$(f)y)$(g)z" : "x$(f)(y$(g)z)")
end
end
# issue 34498
@testset "macro calls @foo{...}" begin
@test :(@foo{}) == :(@foo {})
@test :(@foo{bar}) == :(@foo {bar})
@test :(@foo{bar,baz}) == :(@foo {bar,baz})
@test :(@foo{bar}(baz)) == :((@foo{bar})(baz))
@test :(@foo{bar}{baz}) == :((@foo{bar}){baz})
@test :(@foo{bar}[baz]) == :((@foo{bar})[baz])
@test :(@foo{bar} + baz) == :((@foo{bar}) + baz)
end
@testset "issue #34650" begin
for imprt in [:using, :import]
@test Meta.isexpr(Meta.parse("$imprt A, B"), imprt)
@test Meta.isexpr(Meta.parse("$imprt A: x, y, z"), imprt)
err = Expr(
:error,
"\":\" in \"$imprt\" syntax can only be used when importing a single module. " *
"Split imports into multiple lines."
)
ex = Meta.parse("$imprt A, B: x, y", raise=false)
@test ex == err
ex = Meta.parse("$imprt A: x, B: y", raise=false)
@test ex == err
end
end
# Syntax desugaring pass errors contain line numbers
@test Meta.lower(@__MODULE__, Expr(:block, LineNumberNode(101, :some_file), :(f(x,x)=1))) ==
Expr(:error, "function argument name not unique: \"x\" around some_file:101")
# Ensure file names don't leak between `eval`s
eval(LineNumberNode(11, :incorrect_file))
let exc = try eval(:(f(x,x)=1)) catch e ; e ; end
@test !occursin("incorrect_file", exc.msg)
end
# issue #34967
@test_throws LoadError("string", 2, ErrorException("syntax: invalid UTF-8 sequence")) include_string(@__MODULE__,
"x34967 = 1\n# Halloa\xf5b\nx34967 = 2")
@test x34967 == 1
@test_throws LoadError("string", 1, ErrorException("syntax: invalid UTF-8 sequence")) include_string(@__MODULE__,
"x\xf5 = 3\n# Halloa\xf5b\nx34967 = 4")
@test_throws LoadError("string", 3, ErrorException("syntax: invalid UTF-8 sequence")) include_string(@__MODULE__,
"""
# line 1
# line 2
# Hello\xf5b
x34967 = 6
""")
@test Meta.parse("aa\u200b_", raise=false) ==
Expr(:error, "invisible character \\u200b near column 3")
@test Meta.parse("aa\UE0080", raise=false) ==
Expr(:error, "invalid character \"\Ue0080\" near column 3")
# issue #31238
a31238, b31238 = let x
return 1
end
@test !@isdefined(a31238) && !@isdefined(b31238)
@test @eval((a31238, b31238) = let x
return 1
end) === 1
# issue #35201
h35201(x; k=1) = (x, k)
f35201(c) = h35201((;c...), k=true)
@test f35201(Dict(:a=>1,:b=>3)) === ((a=1,b=3), true)
@testset "issue #34544/35367" begin
# Test these evals shouldnt segfault
eval(Expr(:call, :eval, Expr(:quote, Expr(:module, true, :bar1, Expr(:block)))))
eval(Expr(:module, true, :bar2, Expr(:block)))
eval(Expr(:quote, Expr(:module, true, :bar3, Expr(:quote))))
@test_throws ErrorException eval(Expr(:call, :eval, Expr(:quote, Expr(:module, true, :bar4, Expr(:quote)))))
@test_throws ErrorException eval(Expr(:module, true, :bar5, Expr(:foo)))
@test_throws ErrorException eval(Expr(:module, true, :bar6, Expr(:quote)))
end
# issue #35391
macro a35391(b)
:(GC.@preserve ($(esc(b)),) )
end
@test @a35391(0) === (0,)
# global declarations from the top level are not inherited by functions.
# don't allow such a declaration to override an outer local, since it's not
# clear what it should do.
@test Meta.lower(Main, :(let
x = 1
let
global x
end
end)) == Expr(:error, "`global x`: x is a local variable in its enclosing scope")
# note: this `begin` block must be at the top level
_temp_33553 = begin
global _x_this_remains_undefined
let
local _x_this_remains_undefined = 2
_x_this_remains_undefined
end
end
@test _temp_33553 == 2
@test !@isdefined(_x_this_remains_undefined)
# lowering of adjoint
@test (1 + im)' == 1 - im
x = let var"'"(x) = 2x
3'
end
@test x == 6
# issue #36196
@test_throws ParseError("\"for\" at none:1 expected \"end\", got \")\"") Meta.parse("(for i=1; println())")
@test_throws ParseError("\"try\" at none:1 expected \"end\", got \")\"") Meta.parse("(try i=1; println())")
# issue #36272
macro m36272()
:((a, b=1) -> a*b)
end
@test @m36272()(1) == 1
# issue #37134
macro m37134()
:(x :: Int -> 62)
end
@test @m37134()(1) == 62
@test_throws MethodError @m37134()(1.0) == 62
macro n37134()
:($(esc(Expr(:tuple, Expr(:..., :x))))->$(esc(:x)))
end
@test @n37134()(2,1) === (2,1)
@testset "unary ± and ∓" begin
@test Meta.parse("±x") == Expr(:call, :±, :x)
@test Meta.parse("∓x") == Expr(:call, :∓, :x)
end
@testset "test .<: and .>:" begin
tmp = [Int, Float64, String, Bool] .<: Union{Int, String}
@test tmp == Bool[1, 0, 1, 0]
tmp = [Int, Float64, String, Bool] .>: [Int, Float64, String, Bool]
@test tmp == Bool[1, 1, 1, 1]
tmp = @. [Int, Float64, String, Bool] <: Union{Int, String}
@test tmp == Bool[1, 0,1, 0]
@test (Int .<: [Integer] .<: [Real]) == [true]
end
@test :(a <-- b <-- c) == Expr(:call, :<--, :a, Expr(:call, :<--, :b, :c))
@test :(a .<-- b.<--c) == Expr(:call, :.<--, :a, Expr(:call, :.<--, :b, :c))
@test :(a<-->b<-->c) == Expr(:call, :<-->, :a, Expr(:call, :<-->, :b, :c))
@test :(a.<-->b .<--> c) == Expr(:call, :.<-->, :a, Expr(:call, :.<-->, :b, :c))
@test :(a --> b --> c) == Expr(:-->, :a, Expr(:-->, :b, :c))
@test :(a --> b.-->c) == Expr(:-->, :a, Expr(:call, :.-->, :b, :c))
let (-->) = (+)
@test (40 --> 2) == 42
end
@test_throws ParseError("invalid operator \"<---\"") Meta.parse("1<---2")
@test_throws ParseError("invalid operator \".<---\"") Meta.parse("1 .<--- 2")
@test_throws ParseError("invalid operator \"--\"") Meta.parse("a---b")
@test_throws ParseError("invalid operator \".--\"") Meta.parse("a.---b")
# issue #37228
# NOTE: the `if` needs to be at the top level
if isodd(1) && all(iseven(2) for c in ())
@test true
else
@test false
end
@test :(a +ꜝ b) == Expr(:call, :+ꜝ, :a, :b)
function ncalls_in_lowered(ex, fname)
lowered_exprs = Meta.lower(Main, ex).args[1].code
return count(lowered_exprs) do ex
Meta.isexpr(ex, :call) && ex.args[1] == fname
end
end
@testset "standalone .op" begin
@test :(.+) == Expr(:., :+)
@test :(map(.-, a)) == Expr(:call, :map, Expr(:., :-), :a)
@test ncalls_in_lowered(:(.*), GlobalRef(Base, :BroadcastFunction)) == 1
@test ncalls_in_lowered(:((.^).(a, b)), GlobalRef(Base, :broadcasted)) == 1
@test ncalls_in_lowered(:((.^).(a, b)), GlobalRef(Base, :BroadcastFunction)) == 1
@test ncalls_in_lowered(:((.+)(a, b .- (.^)(c, 2))), GlobalRef(Base, :broadcasted)) == 3
@test ncalls_in_lowered(:((.+)(a, b .- (.^)(c, 2))), GlobalRef(Base, :materialize)) == 1
@test ncalls_in_lowered(:((.+)(a, b .- (.^)(c, 2))), GlobalRef(Base, :BroadcastFunction)) == 0
end
# issue #37656
@test :(if true 'a' else 1 end) == Expr(:if, true, quote 'a' end, quote 1 end)
# issue #37664
@test_throws ParseError("extra token \"b\" after end of expression") Meta.parse("a b")
@test_throws ParseError("extra token \"b\" after end of expression") Meta.parse("a#==#b")
@test_throws ParseError("extra token \"b\" after end of expression") Meta.parse("a #==#b")
@test_throws ParseError("extra token \"b\" after end of expression") Meta.parse("a#==# b")
@test_throws ParseError("extra token \"2\" after end of expression") Meta.parse("1 2")
@test_throws ParseError("extra token \"2\" after end of expression") Meta.parse("1#==#2")
@test_throws ParseError("extra token \"2\" after end of expression") Meta.parse("1 #==#2")
@test_throws ParseError("extra token \"2\" after end of expression") Meta.parse("1#==# 2")
@test size([1#==#2#==#3]) == size([1 2 3])
@test size([1#==#2#==#3]) == size([1 2 3]) # tabs
@test size([1#==#2#==#3]) == size([1 2 3]) # tabs and spaces
@test size([1#==#2#==#3]) == size([1 2 3]) # tabs and spaces
@test [zeros(Int,2,2)#==#[1;2]
[3#==#4]#==#5] == [zeros(Int,2,2) [1; 2]
[3 4] 5 ] == [0 0 1
0 0 2
3 4 5]
@test Meta.parse("for x in 1:10 g(x) end") ==
Meta.parse("for#==#x#==#in#==#1:10#==#g(x)#==#end")
@test Meta.parse("(f->f(1))() do x x+1 end") ==
Meta.parse("(f->f(1))()#==#do#==#x#==#x+1#==#end")
@test Meta.parse("while i < 10 i += 1 end") ==
Meta.parse("while#==#i#==#<#==#10#==#i#==#+=#==#1#==#end")
@test Meta.parse("begin x=1 end") == Meta.parse("begin#==#x=1#==#end")
@test Meta.parse("if x<y x+1 elseif y>0 y+1 else z end") ==
Meta.parse("if#==#x<y#==#x+1#==#elseif#==#y>0#==#y+1#==#else#==#z#==#end")
@test Meta.parse("function(x) x end") == Meta.parse("function(x)#==#x#==#end")
@test Meta.parse("a ? b : c") == Meta.parse("a#==#?#==#b#==#:#==#c")
@test_throws ParseError("space before \"(\" not allowed in \"f (\" at none:1") begin
Meta.parse("f#==#(x)=x")
end
@test Meta.parse("try f() catch e g() finally h() end") ==
Meta.parse("try#==#f()#==#catch#==#e#==#g()#==#finally#==#h()#==#end")
@test Meta.parse("@m a b") == Meta.parse("@m#==#a#==#b")
# issue #37540
macro m37540()
quote
x = 1
:($x)
end
end
@test @m37540() == 1
# issue #37890
struct A37890{A, B}
a
b
A37890(args::Tuple) = return new{typeof.(args)...}(args...)
end
@test A37890((1, "")) isa A37890{Int, String}
@test_throws ErrorException A37890((1,1,1))
@test_throws TypeError A37890((1,))
struct B37890{A, B}
a
b
B37890(a, b) = new{Int, ()..., Int8}(a, b)
end
@test B37890(1.0, 2.0f0) isa B37890{Int, Int8}
# import ... as
@test_throws ParseError("invalid syntax \"using A as ...\"") Meta.parse("using A as B")
@test_throws ParseError("invalid syntax \"using A.b as ...\"") Meta.parse("using A.b as B")
@test_throws ParseError("invalid syntax \"using A.b as ...\"") Meta.parse("using X, A.b as B")
@test_throws ParseError("invalid syntax \"import A as B:\"") Meta.parse("import A as B: c")
@test_throws ParseError("invalid syntax \"import A.b as B:\"") Meta.parse("import A.b as B: c")
module TestImportAs
using Test
module Mod
const x = 1
global maybe_undef
def() = (global maybe_undef = 0)
func(x) = 2x + 1
macro mac(x)
:($(esc(x)) + 1)
end
end
module Mod2
const y = 2
end
import .Mod: x as x2
@test x2 == 1
@test !@isdefined(x)
import .Mod2.y as y2
@test y2 == 2
@test !@isdefined(y)
@test_throws ErrorException eval(:(import .Mod.x as (a.b)))
import .Mod.maybe_undef as mu
@test_throws UndefVarError mu
Mod.def()
@test mu === 0
using .Mod: func as f
@test f(10) == 21
@test !@isdefined(func)
@test_throws ErrorException("error in method definition: function Mod.func must be explicitly imported to be extended") eval(:(f(x::Int) = x))
z = 42
import .z as also_z
@test also_z == 42
import .Mod.@mac as @m
@test @m(3) == 4
@test_throws ErrorException eval(:(import .Mod.@mac as notmacro))
@test_throws ErrorException eval(:(import .Mod.func as @notmacro))
@test_throws ErrorException eval(:(using .Mod: @mac as notmacro))
@test_throws ErrorException eval(:(using .Mod: func as @notmacro))
end
import .TestImportAs.Mod2 as M2
@test !@isdefined(Mod2)
@test M2 === TestImportAs.Mod2
@testset "unicode modifiers after '" begin
@test Meta.parse("a'ᵀ") == Expr(:call, Symbol("'ᵀ"), :a)
@test Meta.parse("a'⁻¹") == Expr(:call, Symbol("'⁻¹"), :a)
@test Meta.parse("a'ᵀb") == Expr(:call, :*, Expr(:call, Symbol("'ᵀ"), :a), :b)
@test Meta.parse("a'⁻¹b") == Expr(:call, :*, Expr(:call, Symbol("'⁻¹"), :a), :b)
end
@testset "issue #37393" begin
@test :(for outer i = 1:3; end) == Expr(:for, Expr(:(=), Expr(:outer, :i), :(1:3)), :(;;))
i = :i
@test :(for outer $i = 1:3; end) == Expr(:for, Expr(:(=), Expr(:outer, :i), :(1:3)), :(;;))
@test :(for outer = 1:3; end) == Expr(:for, Expr(:(=), :outer, :(1:3)), :(;;))
# TIL that this is possible
for outer $ i = 1:3
@test 1 $ 2 in 1:3
end
# 😭
@test Meta.isexpr(Meta.parse("""
[i for i
in 1:3]"""), :comprehension)
@test Meta.isexpr(Meta.parse("""
[i for outer
in 1:3]"""), :comprehension)
@test Meta.isexpr(Meta.parse("""
[i for outer
i in 1:3]"""), :comprehension)
@test Meta.isexpr(Meta.parse("""
f(i for i
in 1:3)""").args[2], :generator)
@test_throws Meta.ParseError Meta.parse("""
for i
in 1:3
end""")
end
# PR #37973
@test Meta.parse("1¦2⌿3") == Expr(:call, :¦, 1, Expr(:call, :⌿, 2, 3))
@testset "slurp in assignments" begin
res = begin x, y, z... = 1:7 end
@test res == 1:7
@test x == 1 && y == 2
@test z == Vector(3:7)
res = begin x, y, z... = [1, 2] end
@test res == [1, 2]
@test x == 1 && y == 2
@test z == Int[]
x = 1
res = begin x..., = x end
@test res == 1
@test x == 1
x, y, z... = 1:7
res = begin y, z, x... = z..., x, y end
@test res == ((3:7)..., 1, 2)
@test y == 3
@test z == 4
@test x == ((5:7)..., 1, 2)
res = begin x, _, y... = 1, 2 end
@test res == (1, 2)
@test x == 1
@test y == ()
res = begin x, y... = 1 end
@test res == 1
@test x == 1
@test y == Iterators.rest(1, nothing)
res = begin x, y, z... = 1, 2, 3:5 end
@test res == (1, 2, 3:5)
@test x == 1 && y == 2
@test z == (3:5,)
@test Meta.isexpr(Meta.@lower(begin a, b..., c = 1:3 end), :error)
@test Meta.isexpr(Meta.@lower(begin a, b..., c = 1, 2, 3 end), :error)
@test Meta.isexpr(Meta.@lower(begin a, b..., c... = 1, 2, 3 end), :error)
@test_throws BoundsError begin x, y, z... = 1:1 end
@test_throws BoundsError begin x, y, _, z... = 1, 2 end
car((a, d...)) = a
cdr((a, d...)) = d
@test car(1:3) == 1
@test cdr(1:3) == [2, 3]
@test begin a, b = (;c = 3, d = 4) end === (c = 3, d = 4)
@test begin a, b, c = (x = "", y = 2.0, z = 1) end === (x = "", y = 2.0, z = 1)
a, b, c = (x = "", y = 2.0, z = 1)
@test a === ""
@test b === 2.0
@test c === 1
@test begin a, b... = (x = "", y = 2.0, z = 1) end === (x = "", y = 2.0, z = 1)
a, b... = (x = "", y = 2.0, z = 1)
@test b === (y = 2.0, z = 1)
let t = (x = "", y = 1, z = 3.0)
_, a, b = t
@test a === 1
@test b === 3.0
a, b... = t
@test a === ""
@test b === (y = 1, z = 3.0)
end
end
@testset "issue #33460" begin
err = Expr(:error, "more than one semicolon in argument list")
@test Meta.lower(Main, :(f(a; b=1; c=2) = 2)) == err
@test Meta.lower(Main, :(f( ; b=1; c=2))) == err
@test Meta.lower(Main, :(f(a; b=1; c=2))) == err
@test Meta.lower(Main, :(f(a; b=1, c=2; d=3))) == err
@test Meta.lower(Main, :(f(a; b=1; c=2, d=3))) == err
@test Meta.lower(Main, :(f(a; b=1; c=2; d=3))) == err
end
@test eval(Expr(:if, Expr(:block, Expr(:&&, true, Expr(:call, :(===), 1, 1))), 1, 2)) == 1
# issue #38386
macro m38386()
fname = :f38386
:(function $(esc(fname)) end)
end
@m38386
@test isempty(methods(f38386))
@testset "all-underscore varargs on the rhs" begin
@test ncalls_in_lowered(quote _..., = a end, GlobalRef(Base, :rest)) == 0
@test ncalls_in_lowered(quote ___..., = a end, GlobalRef(Base, :rest)) == 0
@test ncalls_in_lowered(quote a, _... = b end, GlobalRef(Base, :rest)) == 0
@test ncalls_in_lowered(quote a, _... = b, c end, GlobalRef(Base, :rest)) == 0
@test ncalls_in_lowered(quote a, _... = (b...,) end, GlobalRef(Base, :rest)) == 0
end
# issue #38501
@test :"a $b $("str") c" == Expr(:string, "a ", :b, " ", Expr(:string, "str"), " c")
@testset "property destructuring" begin
res = begin (; num, den) = 1 // 2 end
@test res == 1 // 2
@test num == 1
@test den == 2
res = begin (; b, a) = (a=1, b=2, c=3) end
@test res == (a=1, b=2, c=3)
@test b == 2
@test a == 1
# could make this an error instead, but I think this is reasonable
res = begin (; a, b, a) = (a=5, b=6) end
@test res == (a=5, b=6)
@test a == 5
@test b == 6
@test_throws ErrorException (; a, b) = (x=1,)
@test Meta.isexpr(Meta.@lower(begin (a, b; c) = x end), :error)
@test Meta.isexpr(Meta.@lower(begin (a, b; c) = x, y end), :error)
@test Meta.isexpr(Meta.@lower(begin (; c, a.b) = x end), :error)
f((; a, b)) = a, b
@test f((b=3, a=4)) == (4, 3)
@test f((b=3, c=2, a=4)) == (4, 3)
@test_throws ErrorException f((;))
# with type annotation
let num, den, a, b
res = begin (; num::UInt8, den::Float64) = 1 // 2 end
@test res === 1 // 2
@test num === 0x01
@test den === 2.0
res = begin (; b, a::Bool) = (a=1.0, b=2, c=0x03) end
@test res === (a=1.0, b=2, c=0x03)
@test b === 2
@test a === true
end
@test Meta.isexpr(Meta.@lower(f((; a, b::Int)) = a + b), :error)
end
# #33697
@testset "N-dimensional concatenation" begin
@test :([1 2 5; 3 4 6;;; 0 9 3; 4 5 4]) ==
Expr(:ncat, 3, Expr(:nrow, 1, Expr(:row, 1, 2, 5), Expr(:row, 3, 4, 6)),
Expr(:nrow, 1, Expr(:row, 0, 9, 3), Expr(:row, 4, 5, 4)))
@test :([1 ; 2 ;; 3 ; 4]) == Expr(:ncat, 2, Expr(:nrow, 1, 1, 2), Expr(:nrow, 1, 3, 4))
@test_throws ParseError Meta.parse("[1 2 ;; 3 4]") # cannot mix spaces and ;; except as line break
@test :([1 2 ;;
3 4]) == :([1 2 3 4])
@test :([1 2 ;;
3 4 ; 2 3 4 5]) == :([1 2 3 4 ; 2 3 4 5])
@test Meta.parse("[1;\n]") == :([1;]) # ensure line breaks following semicolons are treated correctly
@test Meta.parse("[1;\n\n]") == :([1;])
@test Meta.parse("[1\n;]") == :([1;]) # semicolons following a linebreak are fine
@test Meta.parse("[1\n;;; 2]") == :([1;;; 2])
@test_throws ParseError Meta.parse("[1;\n;2]") # semicolons cannot straddle a line break
@test_throws ParseError Meta.parse("[1; ;2]") # semicolons cannot be separated by a space
end
# issue #25652
x25652 = 1
x25652_2 = let (x25652, _) = (x25652, nothing)
x25652 = x25652 + 1
x25652
end
@test x25652_2 == 2
@test x25652 == 1
@test let x = x25652
x25652 = x+3
x25652
end == 4
@test let (x,) = (x25652,)
x25652 = x+3
x25652
end == 4
@testset "issue #39600" begin
A = 1:.5:2
@test (!).(1 .< A .< 2) == [true, false, true]
@test .!(1 .< A .< 2) == [true, false, true]
@test (.!)(1 .< A .< 2) == [true, false, true]
@test ncalls_in_lowered(:((!).(1 .< A .< 2)), GlobalRef(Base, :materialize)) == 1
@test ncalls_in_lowered(:(.!(1 .< A .< 2)), GlobalRef(Base, :materialize)) == 1
@test ncalls_in_lowered(:((.!)(1 .< A .< 2)), GlobalRef(Base, :materialize)) == 1
end
# issue #39705
@eval f39705(x) = $(Expr(:||)) && x
@test f39705(1) === false
struct A x end
Base.dotgetproperty(::A, ::Symbol) = [0, 0, 0]
@testset "dotgetproperty" begin
a = (x = [1, 2, 3],)
@test @inferred((a -> a.x .+= 1)(a)) == [2, 3, 4]
b = [1, 2, 3]
@test A(b).x === b
@test begin A(b).x .= 1 end == [1, 1, 1]
@test begin A(b).x .+= 1 end == [2, 3, 4]
@test b == [1, 2, 3]
end
@test Meta.@lower((::T) = x) == Expr(:error, "invalid assignment location \"::T\"")
@test Meta.@lower((::T,) = x) == Expr(:error, "invalid assignment location \"::T\"")
@test Meta.@lower((; ::T) = x) == Expr(:error, "invalid assignment location \"::T\"")
# flisp conversion for quoted SSAValues
@test eval(:(x = $(QuoteNode(Core.SSAValue(1))))) == Core.SSAValue(1)
@test eval(:(x = $(QuoteNode(Core.SlotNumber(1))))) == Core.SlotNumber(1)
@test_throws ErrorException("syntax: SSAValue objects should not occur in an AST") eval(:(x = $(Core.SSAValue(1))))
@test_throws ErrorException("syntax: Slot objects should not occur in an AST") eval(:(x = $(Core.SlotNumber(1))))
# juxtaposition of radical symbols (#40094)
@test Meta.parse("2√3") == Expr(:call, :*, 2, Expr(:call, :√, 3))
@test Meta.parse("2∛3") == Expr(:call, :*, 2, Expr(:call, :∛, 3))
@test Meta.parse("2∜3") == Expr(:call, :*, 2, Expr(:call, :∜, 3))
macro m_underscore_hygiene()
return :(_ = 1)
end
@test @macroexpand(@m_underscore_hygiene()) == :(_ = 1)
macro m_begin_hygiene(a)
return :($(esc(a))[begin])
end
@test @m_begin_hygiene([1, 2, 3]) == 1
# issue 40258
@test "a $("b $("c")")" == "a b c"
@test "$(([[:a, :b], [:c, :d]]...)...)" == "abcd"
@test eval(Expr(:string, "a", Expr(:string, "b", "c"))) == "abc"
@test eval(Expr(:string, "a", Expr(:string, "b", Expr(:string, "c")))) == "abc"
macro m_nospecialize_unnamed_hygiene()
return :(f(@nospecialize(::Any)) = Any)
end
@test @m_nospecialize_unnamed_hygiene()(1) === Any
# https://github.com/JuliaLang/julia/issues/40574
@testset "no mutation while destructuring" begin
x = [1, 2]
x[2], x[1] = x
@test x == [2, 1]
x = [1, 2, 3]
x[3], x[1:2]... = x
@test x == [2, 3, 1]
end
@testset "escaping newlines inside strings" begin
c = "c"
@test "a\
b" == "ab"
@test "a\
b" == "a b"
@test raw"a\
b" == "a\\\nb"
@test "a$c\
b" == "acb"
@test "\\
" == "\\\n"
@test """
a\
b""" == "ab"
@test """
a\
b""" == "a b"
@test """
a\
b""" == " ab"
@test raw"""
a\
b""" == "a\\\nb"
@test """
a$c\
b""" == "acb"
@test """
\
""" == ""
@test """
\\
""" == "\\\n"
@test """
\\\
""" == "\\"
@test """
\\\\
""" == "\\\\\n"
@test """
\\\\\
""" == "\\\\"
@test """
\
\
""" == ""
@test """
\\
\
""" == "\\\n"
@test """
\\\
\
""" == "\\"
@test `a\
b` == `ab`
@test `a\
b` == `a b`
@test `a$c\
b` == `acb`
@test `"a\
b"` == `ab`
@test `'a\
b'` == `$("a\\\nb")`
@test `\\
` == `'\'`
@test ```
a\
b``` == `ab`
@test ```
a\
b``` == `a b`
@test ```
a\
b``` == ` ab`
@test ```
a$c\
b``` == `acb`
@test ```
"a\
b"``` == `ab`
@test ```
'a\
b'``` == `$("a\\\nb")`
@test ```
\\
``` == `'\'`
end
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