Exemplo n.º 1
0
class MultipleFrozenPBCRepr(AbstractMultipleFrozenPBCRepr):
    """Representation selected for multiple non-callable pre-built constants."""
    def __init__(self, rtyper, access_set):
        self.rtyper = rtyper
        self.access_set = access_set
        self.pbc_type = ForwardReference()
        self.lowleveltype = Ptr(self.pbc_type)
        self.pbc_cache = {}

    def _setup_repr(self):
        llfields = self._setup_repr_fields()
        kwds = {'hints': {'immutable': True}}
        self.pbc_type.become(Struct('pbc', *llfields, **kwds))

    def create_instance(self):
        return malloc(self.pbc_type, immortal=True)

    def null_instance(self):
        return nullptr(self.pbc_type)

    def getfield(self, vpbc, attr, llops):
        mangled_name, r_value = self.fieldmap[attr]
        cmangledname = inputconst(Void, mangled_name)
        return llops.genop('getfield', [vpbc, cmangledname],
                           resulttype=r_value)
Exemplo n.º 2
0
 def __init__(self, rtyper, access_set):
     self.rtyper = rtyper
     self.access_set = access_set
     self.pbc_type = ForwardReference()
     self.lowleveltype = Ptr(self.pbc_type)
     self.pbc_cache = {}
Exemplo n.º 3
0
class MultipleFrozenPBCRepr(MultipleFrozenPBCReprBase):
    """For a SomePBC of frozen PBCs with a common attribute access set."""
    def __init__(self, rtyper, access_set):
        self.rtyper = rtyper
        self.access_set = access_set
        self.pbc_type = ForwardReference()
        self.lowleveltype = Ptr(self.pbc_type)
        self.pbc_cache = {}

    def _setup_repr(self):
        llfields = self._setup_repr_fields()
        kwds = {'hints': {'immutable': True, 'static_immutable': True}}
        self.pbc_type.become(Struct('pbc', *llfields, **kwds))

    def create_instance(self):
        return malloc(self.pbc_type, immortal=True)

    def null_instance(self):
        return nullptr(self.pbc_type)

    def getfield(self, vpbc, attr, llops):
        mangled_name, r_value = self.fieldmap[attr]
        cmangledname = inputconst(Void, mangled_name)
        return llops.genop('getfield', [vpbc, cmangledname],
                           resulttype=r_value)

    def _setup_repr_fields(self):
        fields = []
        self.fieldmap = {}
        if self.access_set is not None:
            attrlist = self.access_set.attrs.keys()
            attrlist.sort()
            for attr in attrlist:
                s_value = self.access_set.attrs[attr]
                r_value = self.rtyper.getrepr(s_value)
                mangled_name = mangle('pbc', attr)
                fields.append((mangled_name, r_value.lowleveltype))
                self.fieldmap[attr] = mangled_name, r_value
        return fields

    def convert_desc(self, frozendesc):
        if (self.access_set is not None
                and frozendesc not in self.access_set.descs):
            raise TyperError("not found in PBC access set: %r" %
                             (frozendesc, ))
        try:
            return self.pbc_cache[frozendesc]
        except KeyError:
            self.setup()
            result = self.create_instance()
            self.pbc_cache[frozendesc] = result
            for attr, (mangled_name, r_value) in self.fieldmap.items():
                if r_value.lowleveltype is Void:
                    continue
                try:
                    thisattrvalue = frozendesc.attrcache[attr]
                except KeyError:
                    if frozendesc.warn_missing_attribute(attr):
                        warning("Desc %r has no attribute %r" %
                                (frozendesc, attr))
                    continue
                llvalue = r_value.convert_const(thisattrvalue)
                setattr(result, mangled_name, llvalue)
            return result

    def rtype_getattr(self, hop):
        if hop.s_result.is_constant():
            return hop.inputconst(hop.r_result, hop.s_result.const)

        attr = hop.args_s[1].const
        vpbc, vattr = hop.inputargs(self, Void)
        v_res = self.getfield(vpbc, attr, hop.llops)
        mangled_name, r_res = self.fieldmap[attr]
        return hop.llops.convertvar(v_res, r_res, hop.r_result)
Exemplo n.º 4
0
class MultipleFrozenPBCRepr(MultipleFrozenPBCReprBase):
    """For a SomePBC of frozen PBCs with a common attribute access set."""

    def __init__(self, rtyper, access_set):
        self.rtyper = rtyper
        self.access_set = access_set
        self.pbc_type = ForwardReference()
        self.lowleveltype = Ptr(self.pbc_type)
        self.pbc_cache = {}

    def _setup_repr(self):
        llfields = self._setup_repr_fields()
        kwds = {'hints': {'immutable': True}}
        self.pbc_type.become(Struct('pbc', *llfields, **kwds))

    def create_instance(self):
        return malloc(self.pbc_type, immortal=True)

    def null_instance(self):
        return nullptr(self.pbc_type)

    def getfield(self, vpbc, attr, llops):
        mangled_name, r_value = self.fieldmap[attr]
        cmangledname = inputconst(Void, mangled_name)
        return llops.genop('getfield', [vpbc, cmangledname],
                           resulttype=r_value)

    def _setup_repr_fields(self):
        fields = []
        self.fieldmap = {}
        if self.access_set is not None:
            attrlist = self.access_set.attrs.keys()
            attrlist.sort()
            for attr in attrlist:
                s_value = self.access_set.attrs[attr]
                r_value = self.rtyper.getrepr(s_value)
                mangled_name = mangle('pbc', attr)
                fields.append((mangled_name, r_value.lowleveltype))
                self.fieldmap[attr] = mangled_name, r_value
        return fields

    def convert_desc(self, frozendesc):
        if (self.access_set is not None and
                frozendesc not in self.access_set.descs):
            raise TyperError("not found in PBC access set: %r" % (frozendesc,))
        try:
            return self.pbc_cache[frozendesc]
        except KeyError:
            self.setup()
            result = self.create_instance()
            self.pbc_cache[frozendesc] = result
            for attr, (mangled_name, r_value) in self.fieldmap.items():
                if r_value.lowleveltype is Void:
                    continue
                try:
                    thisattrvalue = frozendesc.attrcache[attr]
                except KeyError:
                    if frozendesc.warn_missing_attribute(attr):
                        warning("Desc %r has no attribute %r" % (frozendesc, attr))
                    continue
                llvalue = r_value.convert_const(thisattrvalue)
                setattr(result, mangled_name, llvalue)
            return result

    def rtype_getattr(self, hop):
        if hop.s_result.is_constant():
            return hop.inputconst(hop.r_result, hop.s_result.const)

        attr = hop.args_s[1].const
        vpbc, vattr = hop.inputargs(self, Void)
        v_res = self.getfield(vpbc, attr, hop.llops)
        mangled_name, r_res = self.fieldmap[attr]
        return hop.llops.convertvar(v_res, r_res, hop.r_result)