class Fig::IncludeBacktrace
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.
Attributes
overrides[R]
Public Class Methods
new(parent, descriptor)
click to toggle source
# File lib/fig/include_backtrace.rb, line 16 def initialize(parent, descriptor) @parent = parent @descriptor = descriptor @overrides = {} end
Public Instance Methods
add_override(statement)
click to toggle source
# File lib/fig/include_backtrace.rb, line 22 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
dump(out)
click to toggle source
Prints a stack trace to the IO object.
# File lib/fig/include_backtrace.rb, line 49 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
get_override(package_name, default_version = nil)
click to toggle source
Returns a version.
# File lib/fig/include_backtrace.rb, line 40 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
Protected Instance Methods
collect(stack)
click to toggle source
# File lib/fig/include_backtrace.rb, line 69 def collect(stack) if @parent @parent.collect(stack) end stack << @descriptor end
dump_to_string()
click to toggle source
# File lib/fig/include_backtrace.rb, line 63 def dump_to_string() string_handle = StringIO.new dump(string_handle) return string_handle.string end