mantao/Plots.jl
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fix warning for not loaded backends

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This commit is contained in:
Daniel Schwabeneder 2018-07-17 22:24:41 +02:00
parent 9ec268928e
commit 7b78d99d99
1 changed files with 12 additions and 7 deletions
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19
src/backends.jl
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@ -24,7 +24,7 @@ macro init_backend(s)
export $sym
$sym(; kw...) = (default(; kw...); backend(Symbol($str)))
backend_name(::$T) = Symbol($str)
backend_package_name(::$T) = sym in _default_backends ? :Plots : Symbol("Plots", $(string(s)))
backend_package_name(pkg::$T) = backend_name(pkg) in _default_backends ? :Plots : Symbol("Plots", $(string(s)))
push!(_backends, Symbol($str))
_backendType[Symbol($str)] = $T
_backendSymbol[$T] = Symbol($str)
@ -138,7 +138,7 @@ function pickDefaultBackend()
env_default = get(ENV, "PLOTS_DEFAULT_BACKEND", "")
if env_default != ""
sym = Symbol(lowercase(env_default))
if sym in _backends && backend_package_name(sym) in names(Main)
if sym in _default_backends
return backend(sym)
else
@warn("You have set PLOTS_DEFAULT_BACKEND=$env_default but it is not supported.")
@ -187,21 +187,26 @@ end
Set the plot backend.
"""
function backend(pkg::AbstractBackend)
if backend_name(pkg) in names(Main)
if backend_package_name(pkg) in nameof.(collect(values(Base.loaded_modules)))
CURRENT_BACKEND.sym = backend_name(pkg)
warn_on_deprecated_backend(CURRENT_BACKEND.sym)
CURRENT_BACKEND.pkg = pkg
else
@warn("To use $(_backendSymbol[pkg]) you have to run `using $(backend_package_name(pkg))` before.")
@warn("To use the `:$(backend_name(pkg))` backend, run `using $(backend_package_name(pkg))`.")
end
backend()
end
function backend(modname::Symbol)
if modname in _backends
warn_on_deprecated_backend(modname)
CURRENT_BACKEND.sym = modname
CURRENT_BACKEND.pkg = _backend_instance(modname)
bpn = backend_package_name(_backend_instance(modname))
if bpn in nameof.(collect(values(Base.loaded_modules)))
warn_on_deprecated_backend(modname)
CURRENT_BACKEND.sym = modname
CURRENT_BACKEND.pkg = _backend_instance(modname)
else
@warn("To use the `:$modname` backend, run `using $bpn`.")
end
else
@warn("`:$modname` is not a supported Plots backend.")
end