# Creates the components header file.

from components import iterComponents

from makeutils import extractMakeVariables

from outpututils import rewriteIfChanged

import sys

def iterComponentsHeader(probeMakePath):

	probeVars = extractMakeVariables(probeMakePath)

	buildComponents = set(

		component.makeName

		for component in iterComponents()

		if component.canBuild(probeVars)

		)

	yield '// Automatically generated by build process.'

	yield ''

	yield '#ifndef COMPONENTS_HH'

	yield '#define COMPONENTS_HH'

	yield ''

	for component in iterComponents():

		varName = component.makeName

		yield '#define COMPONENT_%s %d' % (varName, varName in buildComponents)

	yield ''

	yield 'namespace openmsx {'

	yield ''

	yield 'static const char* const BUILD_COMPONENTS = "%s";' \

		% ' '.join(sorted(buildComponents))

	yield ''

	yield '} // namespace openmsx'

	yield ''

	yield '#endif // COMPONENTS_HH'

if __name__ == '__main__':

	if len(sys.argv) == 3:

		rewriteIfChanged(sys.argv[1], iterComponentsHeader(sys.argv[2]))

	else:

		print(

			'Usage: python3 components2code.py COMPONENTS_HEADER PROBE_MAKE',

			file=sys.stderr

			)

		sys.exit(2)