import collections
import parsing
+import util
NormalVariableExpression = collections.namedtuple(
'NormalVariableExpression',
],
)
+NormalAssignmentStatement = collections.namedtuple(
+ 'NormalAssignmentStatement',
+ [
+ 'target',
+ 'expression',
+ ],
+)
+
NormalIfElseStatement = collections.namedtuple(
'NormalIfElseStatement',
[
],
)
+NormalFunctionDefinitionStatement = collections.namedtuple(
+ 'NormalFunctionDefinitionStatement',
+ [
+ 'name',
+ 'argument_name_list',
+ 'statement_list',
+ ],
+)
+
NormalProgram = collections.namedtuple(
'NormalProgram',
[
],
)
+# TODO Get rid of this
def fake_normalization(counter, thing):
return (counter, (), thing)
items=tuple(arguments),
))
+ counter, function_prestatements, function_expression = normalize_expression(
+ counter,
+ expression.function,
+ )
+
+ for ps in function_prestatements:
+ prestatements.append(ps)
+
return (
counter,
tuple(prestatements),
NormalFunctionCallExpression(
- function=expression.function, # TODO Normalize the function
+ function=function_expression,
argument_count=len(arguments),
argument_items=NormalVariableExpression(variable=arguments_variable),
),
NormalNegationExpression(internal_expression=NormalVariableExpression(variable=internal_variable)),
)
-def normalize_parenthesized_expression(counter, expression):
- return normalize_expression(counter, expression.internal)
-
def normalize_expression(counter, expression):
return {
NormalInfixExpression: fake_normalization,
parsing.FurInfixExpression: normalize_infix_expression,
parsing.FurIntegerLiteralExpression: fake_normalization,
parsing.FurNegationExpression: normalize_negation_expression,
- parsing.FurParenthesizedExpression: normalize_parenthesized_expression,
parsing.FurStringLiteralExpression: fake_normalization,
parsing.FurSymbolExpression: fake_normalization,
}[type(expression)](counter, expression)
def normalize_expression_statement(counter, statement):
+ # TODO Verify all expression types are supported and just call normalize_expression
counter, prestatements, normalized = {
parsing.FurFunctionCallExpression: normalize_function_call_expression,
+ parsing.FurSymbolExpression: normalize_expression,
+ parsing.FurInfixExpression: normalize_expression,
+ parsing.FurIntegerLiteralExpression: normalize_expression,
}[type(statement.expression)](counter, statement.expression)
return (
NormalExpressionStatement(expression=normalized),
)
+def normalize_function_definition_statement(counter, statement):
+ return (
+ counter,
+ (),
+ NormalFunctionDefinitionStatement(
+ name=statement.name,
+ argument_name_list=statement.argument_name_list,
+ statement_list=normalize_statement_list(statement.statement_list),
+ ),
+ )
+
+def normalize_assignment_statement(counter, statement):
+ counter, prestatements, normalized_expression = normalize_expression(counter, statement.expression)
+ return (
+ counter,
+ prestatements,
+ NormalAssignmentStatement(
+ target=statement.target,
+ expression=normalized_expression,
+ ),
+ )
+
def normalize_statement(counter, statement):
return {
+ parsing.FurAssignmentStatement: normalize_assignment_statement,
parsing.FurExpressionStatement: normalize_expression_statement,
- parsing.FurAssignmentStatement: fake_normalization,
+ parsing.FurFunctionDefinitionStatement: normalize_function_definition_statement,
}[type(statement)](counter, statement)
-def normalize(program):
+@util.force_generator(tuple)
+def normalize_statement_list(statement_list):
counter = 0
- statement_list = []
- for statement in program.statement_list:
+ for statement in statement_list:
counter, prestatements, normalized = normalize_statement(counter, statement)
for s in prestatements:
- statement_list.append(s)
- statement_list.append(normalized)
+ yield s
+ yield normalized
+
+def normalize(program):
return NormalProgram(
- statement_list=statement_list,
+ statement_list=normalize_statement_list(program.statement_list),
)