Sha256: 1f10b745cc3832b6e870e831da69da461a0f1c66a3d27c1ce0ad08019010049a
Contents?: true
Size: 1.85 KB
Versions: 33
Compression:
Stored size: 1.85 KB
Contents
require 'fig/repository_error'
module Fig; end
# Stack of applied "include" statements.
#
# Keeps track of overrides and can produce package definition stack traces.
#
# Pushing and popping actually happens via instances being held/let go by
# recursive method calls on RuntimeEnvironment.
class Fig::IncludeBacktrace
attr_reader :overrides
def initialize(parent, descriptor)
@parent = parent
@descriptor = descriptor
@overrides = {}
end
def add_override(statement)
package_name = statement.package_name
# Don't replace an existing override on the stack
return if @parent && @parent.get_override(package_name)
new_version = statement.version
existing_version = @overrides[package_name]
if existing_version && existing_version != new_version
stacktrace = dump_to_string()
raise Fig::RepositoryError.new(
"Override #{package_name} version conflict (#{existing_version} vs #{new_version})#{statement.position_string}." + ( stacktrace.empty? ? '' : "\n#{stacktrace}" )
)
end
@overrides[package_name] = new_version
end
# Returns a version.
def get_override(package_name, default_version = nil)
version = @overrides[package_name]
return version if version
return @parent.get_override(package_name, default_version) if @parent
return default_version
end
# Prints a stack trace to the IO object.
def dump(out)
stack = []
collect(stack)
i = 0
for descriptor in stack
indent=''
i.times { indent += ' ' }
out.puts indent + descriptor.to_string(:use_default_config, :use_description)
i += 1
end
end
protected
def dump_to_string()
string_handle = StringIO.new
dump(string_handle)
return string_handle.string
end
def collect(stack)
if @parent
@parent.collect(stack)
end
stack << @descriptor
end
end
Version data entries
33 entries across 33 versions & 1 rubygems