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import sympy
from mako.template import Template
from pathlib import Path
class Generator:
def __init__(self, descriptor, moments, collision, boundary = ''):
self.descriptor = descriptor
self.moments = moments
self.collision = collision
self.boundary = boundary
def kernel(self, target, precision, geometry):
template_path = Path(__file__).parent/('template/basic.' + target + '.mako')
if not template_path.exists():
raise Exception("Target '%s' not supported" % target)
return Template(filename = str(template_path)).render(
descriptor = self.descriptor,
geometry = geometry,
moments_subexpr = self.moments[0],
moments_assignment = self.moments[1],
collision_subexpr = self.collision[0],
collision_assignment = self.collision[1],
float_type = precision,
boundary_src = Template(self.boundary).render(
descriptor = self.descriptor,
geometry = geometry,
float_type = precision
),
ccode = sympy.ccode
)
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