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#!/usr/bin/env python
import argparse
import string
from boltzgen import *
argparser = argparse.ArgumentParser(
description = 'Generate LBM kernels in various languages using a symbolic description.')
argparser.add_argument('language', help = 'Target language (currently either "cl" or "cpp")')
argparser.add_argument('--lattice', dest = 'lattice', required = True, help = 'Lattice type (D2Q9, D3Q7, D3Q19, D3Q27)')
argparser.add_argument('--layout', dest = 'layout', required = True, help = 'Memory layout ("AOS" or "SOA")')
argparser.add_argument('--precision', dest = 'precision', required = True, help = 'Floating precision ("single" or "double")')
argparser.add_argument('--geometry', dest = 'geometry', required = True, help = 'Size of the block geometry ("x:y(:z)")')
args = argparser.parse_args()
lattice = eval("lbm.model.%s" % args.lattice)
lbm = LBM(lattice)
generator = Generator(
descriptor = lattice,
moments = lbm.moments(),
collision = lbm.bgk(f_eq = lbm.equilibrium(), tau = 0.6))
geometry = Geometry.parse(args.geometry)
src = generator.kernel(args.language, args.precision, args.layout, geometry)
print(src)
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