Class: FFI::Clang::ExpansionLocation

Inherits:
SourceLocation show all
Defined in:
lib/ffi/clang/source_location.rb

Overview

Represents the expansion location of a macro. This provides the location where a macro was expanded, including file, line, column, and byte offset.

Instance Attribute Summary collapse

Attributes inherited from SourceLocation

#location

Instance Method Summary collapse

Methods inherited from SourceLocation

#==, #from_main_file?, #in_system_header?, #null?, null_location

Constructor Details

#initialize(location) ⇒ ExpansionLocation

Create a new expansion location and extract its components.



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# File 'lib/ffi/clang/source_location.rb', line 77

def initialize(location)
  super(location)
  
  cxfile = MemoryPointer.new :pointer
  line   = MemoryPointer.new :uint
  column = MemoryPointer.new :uint
  offset = MemoryPointer.new :uint
  
  Lib::get_expansion_location(@location, cxfile, line, column, offset)
  
  @file = Lib.extract_string Lib.get_file_name(cxfile.read_pointer)
  @line = line.get_uint(0)
  @column = column.get_uint(0)
  @offset = offset.get_uint(0)
end

Instance Attribute Details

#column ⇒ Object (readonly) 



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# File 'lib/ffi/clang/source_location.rb', line 73

attr_reader :file, :line, :column, :offset

#file ⇒ Object (readonly) 



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# File 'lib/ffi/clang/source_location.rb', line 73

def file
  @file
end

#line ⇒ Object (readonly) 



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# File 'lib/ffi/clang/source_location.rb', line 73

attr_reader :file, :line, :column, :offset

#offset ⇒ Object (readonly)

Returns the value of attribute offset.



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# File 'lib/ffi/clang/source_location.rb', line 73

attr_reader :file, :line, :column, :offset

Instance Method Details

#as_string ⇒ Object

Get a string representation of this location.



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# File 'lib/ffi/clang/source_location.rb', line 95

def as_string
  "#{@file}:#{@line}:#{@column}:#{@offset}"
end

#to_s ⇒ Object

Get a detailed string representation.



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# File 'lib/ffi/clang/source_location.rb', line 101

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