› FFI::Clang › Source › FFI › Clang › Lib

`module Lib`

Nested

Definitions

`CUSOR_TRANSLATION_UNIT = Clang.clang_version < Gem::Version.new("15.0.0") ? 300 : 350`

In Clang 15 the enum value changed from 300 to 350!

`def self.extract_string(cxstring)`

Extract a Ruby string from a CXString and dispose of the CXString.

Signature

parameter　cxstring　CXString: The CXString to extract from.
returns　String: The extracted string.

Implementation

def self.extract_string(cxstring)
	result = get_string(cxstring)
	dispose_string cxstring
	
	return result
end

`def self.bitmask_from(enum, opts)`

Convert an options hash to a bitmask for libclang enums.

Signature

parameter　enum　FFI::Enum: The enum type.
parameter　opts　Array(Symbol): The array of option symbols.
returns　Integer: The bitmask representing the options.
raises　Error: If an unknown option is provided.

Implementation

def self.bitmask_from(enum, opts)
	bitmask = 0
	
	opts.each do |symbol|
		if int = enum[symbol]
			bitmask |= int
		else
			raise Error, "unknown option: #{symbol}, expected one of #{enum.symbols}"
		end
	end
	
	bitmask
end

`def self.opts_from(enum, bitmask)`

Convert a bitmask to an array of option symbols.

Signature

parameter　enum　FFI::Enum: The enum type.
parameter　bitmask　Integer: The bitmask to convert.
returns　Array(Symbol): The array of option symbols.
raises　Error: If unknown bits are set in the bitmask.

Implementation

def self.opts_from(enum, bitmask)
	bit = 1
	result = []
	while bitmask != 0
		if bitmask & 1
			if symbol = enum[bit]
				result << symbol
			else
				raise(Error, "unknown values: #{bit}, expected one of #{enum.symbols}")
			end
		end
		bitmask >>= 1
		bit <<= 1
	end
	result
end