import collections
-import parsing
+import desugaring
+import util
+
+NormalBuiltinExpression = collections.namedtuple(
+ 'NormalBuiltinExpression',
+ (
+ 'symbol',
+ ),
+)
NormalVariableExpression = collections.namedtuple(
'NormalVariableExpression',
],
)
-NormalInfixExpression = collections.namedtuple(
- 'NormalInfixExpression',
+NormalIntegerLiteralExpression = collections.namedtuple(
+ 'NormalIntegerLiteralExpression',
[
- 'order',
- 'operator',
- 'left',
- 'right',
+ 'integer',
],
)
+NormalLambdaExpression = collections.namedtuple(
+ 'NormalLambdaExpression',
+ (
+ 'name',
+ 'argument_name_list',
+ 'statement_list',
+ ),
+)
+
+NormalStringLiteralExpression = collections.namedtuple(
+ 'NormalStringLiteralExpression',
+ [
+ 'string',
+ ],
+)
+
+NormalSymbolExpression = collections.namedtuple(
+ 'NormalSymbolExpression',
+ (
+ 'symbol',
+ ),
+)
+
+NormalSymbolLiteralExpression = collections.namedtuple(
+ 'NormalSymbolLiteralExpression',
+ (
+ 'symbol',
+ ),
+)
+
+NormalPushStatement = collections.namedtuple(
+ 'NormalPushStatement',
+ (
+ 'expression',
+ ),
+)
+
NormalFunctionCallExpression = collections.namedtuple(
'NormalFunctionCallExpression',
[
- 'function',
- 'arguments',
+ 'metadata',
+ 'function_expression',
+ 'argument_count',
],
)
-NormalVariableAssignmentStatement = collections.namedtuple(
- 'NormalVariableAssignmentStatement',
+NormalVariableInitializationStatement = collections.namedtuple(
+ 'NormalVariableInitializationStatement',
[
'variable',
'expression',
],
)
+NormalAssignmentStatement = collections.namedtuple(
+ 'NormalAssignmentStatement',
+ [
+ 'target',
+ 'expression',
+ ],
+)
+
+NormalIfElseExpression = collections.namedtuple(
+ 'NormalIfElseExpression',
+ [
+ 'condition_expression',
+ 'if_statement_list',
+ 'else_statement_list',
+ ],
+)
+
NormalProgram = collections.namedtuple(
'NormalProgram',
[
],
)
-def fake_normalization(counter, thing):
- return (counter, (), thing)
+def normalize_builtin_expression(counter, expression):
+ return (
+ counter,
+ (),
+ NormalBuiltinExpression(symbol=expression.symbol),
+ )
-def normalize_function_call_expression(counter, expression):
- assert isinstance(expression, parsing.FurFunctionCallExpression)
+def normalize_integer_literal_expression(counter, expression):
+ return (
+ counter,
+ (),
+ NormalIntegerLiteralExpression(integer=expression.integer),
+ )
+
+def normalize_lambda_expression(counter, expression):
+ variable = '${}'.format(counter)
+
+ _, statement_list = normalize_statement_list(
+ 0,
+ expression.statement_list,
+ )
+
+ return (
+ counter + 1,
+ (
+ NormalVariableInitializationStatement(
+ variable=variable,
+ expression=NormalLambdaExpression(
+ name=expression.name,
+ argument_name_list=expression.argument_name_list,
+ statement_list=statement_list,
+ ),
+ ),
+ ),
+ NormalVariableExpression(variable=variable),
+ )
+
+NormalListConstructExpression = collections.namedtuple(
+ 'NormalListConstructExpression',
+ [
+ 'allocate',
+ ],
+)
+
+def normalize_list_literal_expression(counter, expression):
+ list_variable = '${}'.format(counter)
+ counter += 1
prestatements = []
- arguments = []
- for argument in expression.arguments:
- counter, argument_prestatements, normalized_argument = normalize_expression(counter, argument)
+ for item_expression in expression.item_expression_list:
+ counter, item_expression_prestatements, normalized = normalize_expression(
+ counter,
+ item_expression,
+ )
- for s in argument_prestatements:
- prestatements.append(s)
+ for p in item_expression_prestatements:
+ prestatements.append(p)
+
+ prestatements.append(
+ NormalPushStatement(
+ expression=normalized,
+ )
+ )
+
+ return (
+ counter,
+ tuple(prestatements),
+ NormalListConstructExpression(allocate=len(expression.item_expression_list)),
+ )
+
+def normalize_string_literal_expression(counter, expression):
+ return (
+ counter,
+ (),
+ NormalStringLiteralExpression(string=expression.string),
+ )
- variable = '${}'.format(counter)
- prestatements.append(NormalVariableAssignmentStatement(
- variable=variable,
- expression=normalized_argument,
+NormalStructureLiteralExpression = collections.namedtuple(
+ 'NormalStructureLiteralExpression',
+ (
+ 'field_count',
+ ),
+)
+
+def normalize_structure_literal_expression(counter, expression):
+ prestatements = []
+
+ for field in expression.fields:
+ counter, field_expression_prestatements, field_expression = normalize_expression(
+ counter,
+ field.expression,
+ )
+
+ for p in field_expression_prestatements:
+ prestatements.append(p)
+
+ prestatements.append(NormalPushStatement(
+ expression=field_expression,
))
- arguments.append(NormalVariableExpression(
- variable=variable,
+
+ prestatements.append(NormalPushStatement(
+ expression=NormalSymbolLiteralExpression(
+ symbol=field.symbol,
+ ),
))
- counter += 1
return (
counter,
tuple(prestatements),
- NormalFunctionCallExpression(
- expression.function, # TODO Normalize the function
- arguments=tuple(arguments),
+ NormalStructureLiteralExpression(
+ field_count=len(expression.fields),
),
)
-def normalize_basic_infix_operation(counter, expression):
- counter, left_prestatements, left_expression = normalize_expression(counter, expression.left)
- counter, right_prestatements, right_expression = normalize_expression(counter, expression.right)
+def normalize_symbol_expression(counter, expression):
+ return (
+ counter,
+ (),
+ NormalSymbolExpression(symbol=expression.symbol),
+ )
- left_variable = '${}'.format(counter)
- counter += 1
- right_variable = '${}'.format(counter)
- counter += 1
+def normalize_symbol_literal_expression(counter, expression):
+ return (
+ counter,
+ (),
+ NormalSymbolLiteralExpression(symbol=expression.symbol),
+ )
- root_prestatements = (
- NormalVariableAssignmentStatement(
- variable=left_variable,
- expression=left_expression,
- ),
- NormalVariableAssignmentStatement(
- variable=right_variable,
- expression=right_expression,
- ),
+def normalize_function_call_expression(counter, expression):
+ prestatements = []
+
+ for argument in expression.argument_list:
+ counter, argument_prestatements, normalized_argument = normalize_expression(counter, argument)
+
+ for s in argument_prestatements:
+ prestatements.append(s)
+
+ prestatements.append(
+ NormalPushStatement(
+ expression=normalized_argument,
+ ),
+ )
+
+ counter, function_prestatements, function_expression = normalize_expression(
+ counter,
+ expression.function,
)
+ for ps in function_prestatements:
+ prestatements.append(ps)
+
return (
counter,
- left_prestatements + right_prestatements + root_prestatements,
- NormalInfixExpression(
- order=expression.order, # TODO Do we need this?
- operator=expression.operator,
- left=NormalVariableExpression(variable=left_variable),
- right=NormalVariableExpression(variable=right_variable),
+ tuple(prestatements),
+ NormalFunctionCallExpression(
+ metadata=expression.metadata,
+ function_expression=function_expression,
+ argument_count=len(expression.argument_list),
),
)
-def normalize_infix_expression(counter, expression):
- # TODO Unfake this normalization
- return {
- 'multiplication_level': normalize_basic_infix_operation,
- 'addition_level': normalize_basic_infix_operation,
- 'comparison_level': fake_normalization,
- 'and_level': fake_normalization,
- 'or_level': fake_normalization,
- }[expression.order](counter, expression)
+def normalize_if_expression(counter, expression):
+ counter, condition_prestatements, condition_expression = normalize_expression(
+ counter,
+ expression.condition_expression,
+ )
+
+ counter, if_statement_list = normalize_statement_list(
+ counter,
+ expression.if_statement_list,
+ )
+ counter, else_statement_list = normalize_statement_list(
+ counter,
+ expression.else_statement_list,
+ )
+
+ return (
+ counter,
+ condition_prestatements,
+ NormalIfElseExpression(
+ condition_expression=condition_expression,
+ if_statement_list=if_statement_list,
+ else_statement_list=else_statement_list,
+ ),
+ )
def normalize_expression(counter, expression):
return {
- parsing.FurFunctionCallExpression: normalize_function_call_expression,
- parsing.FurInfixExpression: normalize_infix_expression,
- parsing.FurIntegerLiteralExpression: fake_normalization,
- parsing.FurNegationExpression: fake_normalization, # TODO Don't fake this
- parsing.FurParenthesizedExpression: fake_normalization, # TODO Don't fake this
- parsing.FurStringLiteralExpression: fake_normalization,
- parsing.FurSymbolExpression: fake_normalization,
+ desugaring.DesugaredBuiltinExpression: normalize_builtin_expression,
+ desugaring.DesugaredFunctionCallExpression: normalize_function_call_expression,
+ desugaring.DesugaredIfExpression: normalize_if_expression,
+ desugaring.DesugaredIntegerLiteralExpression: normalize_integer_literal_expression,
+ desugaring.DesugaredLambdaExpression: normalize_lambda_expression,
+ desugaring.DesugaredListLiteralExpression: normalize_list_literal_expression,
+ desugaring.DesugaredStringLiteralExpression: normalize_string_literal_expression,
+ desugaring.DesugaredStructureLiteralExpression: normalize_structure_literal_expression,
+ desugaring.DesugaredSymbolExpression: normalize_symbol_expression,
+ desugaring.DesugaredSymbolLiteralExpression: normalize_symbol_literal_expression,
}[type(expression)](counter, expression)
def normalize_expression_statement(counter, statement):
- counter, prestatements, normalized = {
- parsing.FurFunctionCallExpression: normalize_function_call_expression,
- }[type(statement.expression)](counter, statement.expression)
+ # TODO Normalized will be a NormalVariableExpression, which will go unused
+ # for expression statements in every case except when it's a return
+ # statement. This cases warnings on C compilation. We should only generate
+ # this variable when it will be used on return.
+ counter, prestatements, normalized = normalize_expression(counter, statement.expression)
return (
counter,
NormalExpressionStatement(expression=normalized),
)
+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.FurExpressionStatement: normalize_expression_statement,
- parsing.FurAssignmentStatement: fake_normalization,
+ desugaring.DesugaredAssignmentStatement: normalize_assignment_statement,
+ desugaring.DesugaredExpressionStatement: normalize_expression_statement,
}[type(statement)](counter, statement)
-def normalize(program):
- counter = 0
- statement_list = []
+@util.force_generator(tuple)
+def normalize_statement_list(counter, statement_list):
+ result_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)
+ result_statement_list.append(s)
+ result_statement_list.append(normalized)
+
+ return (
+ counter,
+ result_statement_list,
+ )
+
+def normalize(program):
+ _, statement_list = normalize_statement_list(0, program.statement_list)
return NormalProgram(
statement_list=statement_list,
projects / fur / blobdiff