def resolveConstructor(self, context):
from prompto.type.CategoryType import CategoryType
try:
ctor = ConstructorExpression(CategoryType(self.name), None, None)
ctor.check(context)
return ctor
except SyntaxError as e:
return None
def populateError(self, e, context):
error = e.getExpression(context)
if error == None:
exp = ConstructorExpression(CategoryType("Error"), None, None)
args = ArgumentList()
args.append(Argument(UnresolvedParameter("name"), TextLiteral(type(e).__name__)))
args.append(Argument(UnresolvedParameter("text"), TextLiteral(e.getMessage())))
exp.setArguments(args)
error = exp
if context.getRegisteredValue(INamedInstance, self.errorName) == None:
context.registerValue(ErrorVariable(self.errorName))
if isinstance(error, IExpression):
error = error.interpret(context)
context.setValue(self.errorName, error)
return error
def resolveUnresolvedDeclaration(self, context, name):
decl = context.getRegisteredDeclaration(IDeclaration, name)
if decl is None:
raise SyntaxError("Unknown name:" + name)
if isinstance(decl, CategoryDeclaration):
return ConstructorExpression(CategoryType(name), None, self.arguments)
else:
return MethodCall(MethodSelector(name), self.arguments)
def interpret(self, context, errorName):
exp = self.getExpression(context)
if exp is None:
from prompto.grammar.Argument import Argument
from prompto.grammar.ArgumentList import ArgumentList
from prompto.expression.ConstructorExpression import ConstructorExpression
from prompto.param.UnresolvedParameter import UnresolvedParameter
from prompto.literal.TextLiteral import TextLiteral
from prompto.type.CategoryType import CategoryType
args = ArgumentList()
args.append(
Argument(UnresolvedParameter("name"),
TextLiteral(type(self).__name__)))
args.append(
Argument(UnresolvedParameter("text"),
TextLiteral(self.message)))
exp = ConstructorExpression(CategoryType("Error"), args, None)
if context.getRegisteredValue(object, errorName) is None:
from prompto.runtime.ErrorVariable import ErrorVariable
context.registerValue(ErrorVariable(errorName))
error = exp.interpret(context)
context.setValue(errorName, error)
return error