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syntax.jl
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syntax.jl
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# 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(; $(esc(:x))=2) = 2x
end
end
let g = @f16096_2
@test g() == 4
end
# issue #15838
module A15838
macro f() end
const x = :a
end
module B15838
import ..A15838.@f
macro f(x); return :x; end
const x = :b
end
@test A15838.@f() === nothing
@test A15838.@f(1) === :b
let ex = :(A15838.@f(1, 2)), __source__ = LineNumberNode(@__LINE__, Symbol(@__FILE__))
nometh = try
macroexpand(@__MODULE__, ex)
false
catch ex
ex
end::LoadError
@test nometh.file === string(__source__.file)
@test nometh.line === __source__.line
e = nometh.error::MethodError
@test e.f === getfield(A15838, Symbol("@f"))
@test e.args === (__source__, @__MODULE__, 1, 2)
end
# issue 10046
for op in ["+", "-", "\$", "|", ".+", ".-", "*", ".*"]
@test_throws ParseError Meta.parse("$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
# 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
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