Fixed initialisation issue for concepts with BNF definition

This commit is contained in:
2019-12-20 12:25:15 +01:00
parent 5c95d918ad
commit 69f8c2835f
7 changed files with 112 additions and 41 deletions
+2 -1
View File
@@ -29,12 +29,13 @@ class ConceptEvaluator(OneReturnValueEvaluator):
def eval(self, context, return_value):
sheerka = context.sheerka
concept = return_value.value.value
context.log(self.verbose_log, f"Evaluating concept {concept}.", self.name)
# pre condition should already be validated by the parser.
# It's a mandatory condition for the concept before it can be recognized
if len(concept.cached_asts) == 0:
sheerka.initialize_concept_asts(context, concept)
sheerka.initialize_concept_asts(context, concept, self.verbose_log)
# TODO; check pre
# if pre is not true, return Concept with a false value
+12 -5
View File
@@ -27,18 +27,19 @@ class PythonEvaluator(OneReturnValueEvaluator):
sheerka = context.sheerka
node = return_value.value.value
try:
context.log(self.verbose_log, f"Evaluating python node {node}", self.name)
context.log(self.verbose_log, f"Evaluating python node {node}.", self.name)
my_locals = self.get_locals(context, node.ast_)
context.log(self.verbose_log, f"locals={my_locals}", self.name)
if isinstance(node.ast_, ast.Expression):
context.log(self.verbose_log, "Evaluating using 'eval'", self.name)
context.log(self.verbose_log, "Evaluating using 'eval'.", self.name)
compiled = compile(node.ast_, "<string>", "eval")
evaluated = eval(compiled, {}, my_locals)
else:
context.log(self.verbose_log, "Evaluating using 'exec'", self.name)
context.log(self.verbose_log, "Evaluating using 'exec'.", self.name)
evaluated = self.exec_with_return(node.ast_, my_locals)
context.log(self.verbose_log, f"{evaluated=}", self.name)
return sheerka.ret(self.name, True, evaluated, parents=[return_value])
except Exception as error:
context.log_error(self.verbose_log, error, self.name)
@@ -48,6 +49,8 @@ class PythonEvaluator(OneReturnValueEvaluator):
def get_locals(self, context, ast_):
my_locals = {"sheerka": context.sheerka}
if context.obj:
context.log(self.verbose_log,
f"Concept '{context.obj}' is in context. Adding its properties to locals if any.", self.name)
for prop_name, prop_value in context.obj.props.items():
my_locals[prop_name] = prop_value.value
@@ -56,12 +59,16 @@ class PythonEvaluator(OneReturnValueEvaluator):
unreferenced_names_visitor.visit(node_concept)
for name in unreferenced_names_visitor.names:
context.log(self.verbose_log, f"Resolving '{name}'.", self.name)
concept = context.sheerka.new(name)
if context.sheerka.isinstance(concept, BuiltinConcepts.UNKNOWN_CONCEPT):
context.log(self.verbose_log, f"'{name}' is not a concept. Skipping.", self.name)
continue
sub_context = context.push(self.name, desc="Evaluating body", obj=concept)
context.sheerka.eval_concept(sub_context, concept, ["body"])
context.log(self.verbose_log, f"'{name}' is a concept. Evaluating body.", self.name)
sub_context = context.push(self.name, desc=f"Evaluating {concept}'s body", obj=concept)
sub_context.log_new(self.verbose_log)
context.sheerka.eval_concept(sub_context, concept, ["body"], self.verbose_log)
if not context.sheerka.isa(concept.body, BuiltinConcepts.ERROR):
my_locals[name] = concept.body
+4
View File
@@ -53,7 +53,11 @@ class TooManySuccessEvaluator(AllReturnValuesEvaluator):
context.log(self.verbose_log, f"value={sheerka.value(s.value)}", self.name)
if not core.builtin_helpers.is_same_success(sheerka, self.success):
context.log(self.verbose_log,
f"Values are different. Raising {BuiltinConcepts.TOO_MANY_SUCCESS}.", self.name)
too_many_success = sheerka.new(BuiltinConcepts.TOO_MANY_SUCCESS, body=self.success)
return sheerka.ret(self.name, False, too_many_success, parents=return_values)
context.log(self.verbose_log,
f"Values are the same. Nothing to do.", self.name)
return None