`class RuleNode`

Represents a build graph node that applies a specific rule with given arguments.

Definitions

`def initialize(rule, arguments, &block)`

Initialize the rule node.

Signature

parameter　rule　Build::Rule: The rule to apply.
parameter　arguments　Hash: The normalised arguments for the rule.

Implementation

def initialize(rule, arguments, &block)
	@arguments = arguments
	@rule = rule
	
	@callback = block
	
	inputs, outputs = @rule.files(@arguments)
	
	super(inputs, outputs)
end

`def ==(other)`

Signature

returns　Boolean: Whether this node is equal to another.

Implementation

def == other
	super and
		@arguments == other.arguments and
		@rule == other.rule and
		@callback == other.callback
end

`def hash`

Signature

returns　Integer: A hash value for this node.

Implementation

def hash
	super ^ @arguments.hash ^ @rule.hash ^ @callback.hash
end

`def task_class(parent_task)`

Signature

returns　Class: The task class inherited from the parent task.

Implementation

def task_class(parent_task)
	parent_task.class
end

`def name`

Signature

returns　String: The name of the rule.

Implementation

def name
	@rule.name
end

`def apply!(scope)`

Apply the rule in the given scope, then invoke the callback if present.

Signature

parameter　scope　Object: The task scope.

Implementation

def apply!(scope)
	@rule.apply!(scope, @arguments)
	
	if @callback
		scope.instance_exec(@arguments, &@callback)
	end
end

`def inspect`

Signature

returns　String: A human-readable representation of the rule node.

Implementation

def inspect
	@rule.name.inspect
end