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import gdb.printing
import math
def xstr(val):
if val.is_optimized_out:
return "<optimized out>"
else:
return str(val)
class GeomPointPrinter:
def __init__(self, val):
self.val = val
def to_string(self):
return "(" + xstr(self.val["_pt"][0]) + ", " + xstr(self.val["_pt"][1]) + ")"
class GeomIntervalPrinter:
def __init__(self, val):
self.val = val
def to_string(self):
return "[" + xstr(self.val["_b"][0]) + ", " + xstr(self.val["_b"][1]) + ")"
class GeomOptIntervalPrinter:
def __init__(self, val):
self.val = val
def to_string(self):
if self.val["m_initialized"]:
addr = self.val["m_storage"]["dummy_"]["data"].address
if self.val.type == gdb.lookup_type('Geom::OptInterval'):
return str(addr.cast(gdb.lookup_type('Geom::Interval').pointer()).dereference())
else:
return str(addr.cast(gdb.lookup_type('Geom::GenericInterval<int>').pointer()).dereference())
else:
return "empty"
class GeomRectPrinter:
def __init__(self, val):
self.val = val
def to_string(self):
return str(self.val["f"][0]) + " x " + str(self.val["f"][1])
class GeomOptRectPrinter:
def __init__(self, val):
self.val = val
def to_string(self):
if self.val["m_initialized"]:
addr = self.val["m_storage"]["dummy_"]["data"].address
if self.val.type == gdb.lookup_type('Geom::OptRect'):
return str(addr.cast(gdb.lookup_type('Geom::Rect').pointer()).dereference())
else:
return str(addr.cast(gdb.lookup_type('Geom::GenericRect<int>').pointer()).dereference())
else:
return "empty"
class GeomAffinePrinter:
def __init__(self, val):
self.val = val
def to_string(self):
return ("\n | %8f %8f 0 |" +
"\n | %8f %8f 0 |" +
"\n | %8f %8f 1 |") % tuple(self.val["_c"][x] for x in range(0,6))
class GeomTranslatePrinter:
def __init__(self, val):
self.val = val
def to_string(self):
return "translate by " + str(self.val["vec"])
class GeomScalePrinter:
def __init__(self, val):
self.val = val
def to_string(self):
return "scale by " + str(self.val["vec"])
class GeomRotatePrinter:
def __init__(self, val):
self.val = val
def to_string(self):
x = self.val["vec"][0]
y = self.val["vec"][1]
angle = math.atan2(y, x) / math.pi * 180.0
return "rotate by %s = %f degrees" % (str(self.val["vec"]), angle)
class GeomZoomPrinter:
def __init__(self, val):
self.val = val
def to_string(self):
return "zoom %f%% at %s" % (self.val["_scale"] * 100, str(self.val["_trans"]))
def lib2geom_pretty_printer():
pp = gdb.printing.RegexpCollectionPrettyPrinter("lib2geom")
pp.add_printer('Geom::Point', '^Geom::(Int)?Point$', GeomPointPrinter)
pp.add_printer('Geom::Interval', '^(Geom::Interval|Geom::GenericInterval<int>)$', GeomIntervalPrinter)
pp.add_printer('Geom::OptInterval', '^(Geom::OptInterval|Geom::GenericOptInterval<int>)$', GeomOptIntervalPrinter)
pp.add_printer('Geom::Rect', '^(Geom::Rect|Geom::GenericRect<int>)$', GeomRectPrinter)
pp.add_printer('Geom::OptRect', '^(Geom::OptRect|Geom::GenericOptRect<int>)$', GeomOptRectPrinter)
pp.add_printer('Geom::Affine', '^Geom::Affine$', GeomAffinePrinter)
pp.add_printer('Geom::Translate', '^Geom::Translate$', GeomTranslatePrinter)
pp.add_printer('Geom::Scale', '^Geom::Scale', GeomScalePrinter)
pp.add_printer('Geom::Rotate', '^Geom::Rotate$', GeomRotatePrinter)
pp.add_printer('Geom::Zoom', '^Geom::Zoom$', GeomZoomPrinter)
return pp
def register_lib2geom_printers():
gdb.printing.register_pretty_printer(
gdb.current_objfile(),
lib2geom_pretty_printer())
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