`class PresumedLocation`

Represents a presumed location in source code. This is the location that appears to the user after macro expansion and #line directives.

Definitions

`attr_reader :filename, :line, :column, :offset`

Signature

attribute　r

filename

returns　String: The presumed filename.

attribute　r

line

returns　Integer: The presumed line number.

attribute　r

column

returns　Integer: The presumed column number.

attribute　r

offset

returns　Integer: The presumed byte offset.

`def initialize(location)`

Create a new presumed location and extract its components.

Signature

parameter　location　FFI::Pointer: The low-level location handle.

Implementation

def initialize(location)
	super(location)
	
	cxstring = MemoryPointer.new Lib::CXString
	line = MemoryPointer.new :uint
	column = MemoryPointer.new :uint
	
	Lib::get_presumed_location(@location, cxstring, line, column)
	
	@filename = Lib.extract_string cxstring
	@line = line.get_uint(0)
	@column = column.get_uint(0)
end

`def as_string`

Get a string representation of this location.

Signature

returns　String: The location in format "filename:line:column".

Implementation

def as_string
	"#{@filename}:#{@line}:#{@column}"
end

`def to_s`

Get a detailed string representation.

Signature

returns　String: A string describing this presumed location.

Implementation

def to_s
	"PresumedLocation <#{self.as_string}>"
end