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parser.jl
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parser.jl
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# This file is a part of Julia. License is MIT: http:https://julialang.org/license
function parseall(str)
pos = start(str)
exs = []
while !done(str, pos)
ex, pos = 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
for (ex1, ex2) in [("5.≠x", "5.!=x"),
("5.≥x", "5.>=x"),
("5.≤x", "5.<=x")]
ex1 = parse(ex1); ex2 = parse(ex2)
@test ex1.head === :comparison && (ex1.head === ex2.head)
@test ex1.args[1] === 5 && ex2.args[1] === 5
@test is(eval(Main, ex1.args[2]), eval(Main, ex2.args[2]))
@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 $a end) == :(module a
end)
end
# string literals
macro test999_str(args...); args; end
@test test999"a"b == ("a","b")
@test test999"""a"""b == ("a","b")
@test test999"
a
b" == ("
a
b",)
@test test999"""
a
b""" == ("a\nb",)
# issue #5997
@test_throws ParseError parse(": x")
@test_throws ParseError parse("d[: 2]")
# issue #6770
@test_throws ParseError parse("x.3")
# issue #8763
@test_throws ParseError parse("sqrt(16)2")
@test_throws ParseError parse("x' y")
@test_throws ParseError parse("x 'y")
@test parse("x'y") == Expr(:call, :*, Expr(symbol("'"), :x), :y)
# issue #8301
@test_throws ParseError parse("&*s")
# issue #10677
@test_throws ParseError parse("/1")
@test_throws ParseError parse("/pi")
@test parse("- = 2") == Expr(:(=), :(-), 2)
@test parse("/ = 2") == Expr(:(=), :(/), 2)
@test_throws ParseError parse("< : 2")
@test_throws ParseError parse("+ : 2")
@test_throws ParseError parse("< :2")
@test parse("+ :2") == Expr(:call, :(+), QuoteNode(2))
# issue #10900
@test_throws ParseError parse("+=")
@test_throws ParseError parse(".")
@test_throws ParseError parse("...")
# issue #10901
@test parse("/([1], 1)[1]") == :(([1] / 1)[1])
# issue #10997
@test parse(":(x.\$f[i])") == Expr(:quote,
Expr(:ref,
Expr(symbol("."), :x,
Expr(:$, Expr(:call, TopNode(:Expr),
QuoteNode(:quote),
:f))),
:i))
# issue #10994
@test parse("1 + #= \0 =# 2") == :(1 + 2)
# issue #10985
@test expand(:(f(::Int...) = 1)).head == :method
# issue #10910
@test parse(":(using A)") == Expr(:quote, Expr(:using, :A))
@test parse(":(using A.b, B)") == Expr(:quote,
Expr(:toplevel,
Expr(:using, :A, :b),
Expr(:using, :B)))
@test parse(":(using A: b, c.d)") == Expr(:quote,
Expr(:toplevel,
Expr(:using, :A, :b),
Expr(:using, :A, :c, :d)))
@test parse(":(importall A)") == Expr(:quote, Expr(:importall, :A))
@test parse(":(import A)") == Expr(:quote, Expr(:import, :A))
@test parse(":(import A.b, B)") == Expr(:quote,
Expr(:toplevel,
Expr(:import, :A, :b),
Expr(:import, :B)))
@test parse(":(import A: b, c.d)") == Expr(:quote,
Expr(:toplevel,
Expr(:import, :A, :b),
Expr(:import, :A, :c, :d)))
# issue #11332
@test parse("export \$(symbol(\"A\"))") == :(export $(Expr(:$, :(symbol("A")))))
@test parse("export \$A") == :(export $(Expr(:$, :A)))
@test parse("using \$a.\$b") == Expr(:using, Expr(:$, :a), Expr(:$, :b))
@test parse("using \$a.\$b, \$c") == Expr(:toplevel, Expr(:using, Expr(:$, :a),
Expr(:$, :b)),
Expr(:using, Expr(:$, :c)))
@test parse("using \$a: \$b, \$c.\$d") ==
Expr(:toplevel, Expr(:using, Expr(:$, :a), Expr(:$, :b)),
Expr(:using, Expr(:$, :a), Expr(:$, :c), Expr(:$, :d)))
# fix pr #11338 and test for #11497
@test parseall("using \$\na") == Expr(:block, Expr(:using, :$), :a)
@test parseall("using \$,\na") == Expr(:toplevel, Expr(:using, :$),
Expr(:using, :a))
@test parseall("using &\na") == Expr(:block, Expr(:using, :&), :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)))