def _create_is_same_expr(self, lhs: ir.Expr, rhs: ir.Expr):
return ir.ClassMemberAccess(inner_expr=ir.TemplateInstantiation(
template_expr=GlobalLiterals.STD_IS_SAME,
args=(lhs, rhs),
instantiation_might_trigger_static_asserts=False),
expr_type=ir.BoolType(),
member_name='value')
def transform_comparison_expr(self,
comparison: ir.ComparisonExpr) -> ir.Expr:
lhs = comparison.lhs
rhs = comparison.rhs
op = comparison.op
lhs = self.transform_expr(lhs)
rhs = self.transform_expr(rhs)
if isinstance(lhs, ir.Literal) and isinstance(rhs, ir.Literal):
if op == '==':
return ir.Literal(lhs.value == rhs.value)
if op == '!=':
return ir.Literal(lhs.value != rhs.value)
if op == '<':
return ir.Literal(lhs.value < rhs.value)
if op == '<=':
return ir.Literal(lhs.value <= rhs.value)
if op == '>':
return ir.Literal(lhs.value > rhs.value)
if op == '>=':
return ir.Literal(lhs.value >= rhs.value)
if op in ('==', '!=') and self._is_syntactically_equal(
lhs, rhs) and not expr_can_trigger_static_asserts(lhs):
if self._can_remove_subexpression(
lhs) and self._can_remove_subexpression(rhs):
return {
'==': ir.Literal(True),
'!=': ir.Literal(False),
}[op]
if op in ('==', '!=') and isinstance(
rhs, ir.Literal) and rhs.expr_type == ir.BoolType():
rhs, lhs = lhs, rhs
if op in ('==', '!=') and isinstance(
lhs, ir.Literal) and lhs.expr_type == ir.BoolType():
return {
('==', True): lambda: rhs,
('==', False): lambda: self.transform_expr(ir.NotExpr(rhs)),
('!=', True): lambda: self.transform_expr(ir.NotExpr(rhs)),
('!=', False): lambda: rhs,
}[(op, lhs.value)]()
return ir.ComparisonExpr(lhs, rhs, op)
def _variadic_bool_arg_decl(name: str):
return ir.TemplateArgDecl(expr_type=ir.BoolType(),
name=name,
is_variadic=True)
def _variadic_bool_arg_type():
return ir.TemplateArgType(expr_type=ir.BoolType(), is_variadic=True)
from _py2tmp.ir0 import ir
from _py2tmp.ir0 import select1st_literal
from _py2tmp.ir0_optimization._configuration_knobs import ConfigurationKnobs
from _py2tmp.ir0 import NameReplacementTransformation, ToplevelWriter, Transformation, \
TemplateBodyWriter
from _py2tmp.ir0_optimization._compute_non_expanded_variadic_vars import compute_non_expanded_variadic_vars
from _py2tmp.ir0_optimization._local_optimizations import perform_local_optimizations_on_template_defn, \
perform_local_optimizations_on_toplevel_elems
from _py2tmp.ir0_optimization._optimization_execution import apply_elem_optimization, describe_template_defns, \
describe_toplevel_elems
from _py2tmp.ir0_optimization._replace_var_with_expr import replace_var_with_expr_in_template_body_elements, \
VariadicVarReplacementNotPossibleException, replace_var_with_expr_in_expr
from _py2tmp.ir0_optimization._unify import unify_template_instantiation_with_definition
_select1st_type_and_name = [
(ir.BoolType(), 'Bool'),
(ir.Int64Type(), 'Int64'),
(ir.TypeType(), 'Type'),
]
TEMPLATE_DEFNS_DEFINED_AS_IR0 = [
ir.TemplateDefn(
name='std::is_same',
description='',
result_element_names=['value'],
args=[
ir.TemplateArgDecl(
name='T', expr_type=ir.TypeType(), is_variadic=False),
ir.TemplateArgDecl(
name='U', expr_type=ir.TypeType(), is_variadic=False)
],
