+++ /dev/null
-import collections
-
-import conversion
-
-CIntegerLiteral = collections.namedtuple(
- 'CIntegerLiteral',
- [
- 'value',
- ],
-)
-
-CStringLiteral = collections.namedtuple(
- 'CStringLiteral',
- [
- 'index',
- 'value',
- ],
-)
-
-CVariableExpression = collections.namedtuple(
- 'CVariableExpression',
- [
- 'variable',
- ],
-)
-
-CSymbolExpression = collections.namedtuple(
- 'CSymbolExpression',
- [
- 'symbol',
- 'symbol_list_index',
- ],
-)
-
-CStructureLiteralExpression = collections.namedtuple(
- 'CStructureLiteralExpression',
- [
- 'field_count',
- 'symbol_list_variable',
- 'value_list_variable',
- ],
-)
-
-CPushStatement = collections.namedtuple(
- 'CPushStatement',
- (
- 'expression',
- ),
-)
-
-CFunctionCallExpression = collections.namedtuple(
- 'CFunctionCallExpression',
- (
- 'metadata',
- 'function_expression',
- 'argument_count',
- ),
-)
-
-# TODO We are currently not changing variables, just preventing them from being accessed.
-CSymbolAssignmentStatement = collections.namedtuple(
- 'CSymbolAssignmentStatement',
- [
- 'target',
- 'target_symbol_list_index',
- 'expression',
- ],
-)
-
-CArrayVariableInitializationStatement = collections.namedtuple(
- 'CArrayVariableInitializationStatement',
- [
- 'variable',
- 'items',
- ],
-)
-
-CSymbolArrayVariableInitializationStatement = collections.namedtuple(
- 'CSymbolArrayVariableInitializationStatement',
- [
- 'variable',
- 'symbol_list',
- 'symbol_list_indices',
- ],
-)
-
-CVariableInitializationStatement = collections.namedtuple(
- 'CVariableInitializationStatement',
- [
- 'variable',
- 'expression',
- ],
-)
-
-CExpressionStatement = collections.namedtuple(
- 'CExpressionStatement',
- [
- 'expression',
- ],
-)
-
-CIfElseExpression = collections.namedtuple(
- 'CIfElseExpression',
- [
- 'condition_expression',
- 'if_statement_list',
- 'else_statement_list',
- ],
-)
-
-# TODO If a function definition doesn't end with an expression, we have issues currently because we try to return statement.
-# TODO Closures currently wrap entire defining environment, even symbols that are not used, which makes garbage collection ineffective.
-CFunctionDefinition = collections.namedtuple(
- 'CFunctionDefinition',
- [
- 'name',
- 'index',
- 'argument_name_list',
- 'statement_list',
- ],
-)
-
-CProgram = collections.namedtuple(
- 'CProgram',
- [
- 'builtin_set',
- 'function_definition_list',
- 'operator_declarations',
- 'statements',
- 'standard_libraries',
- 'string_literal_list',
- 'symbol_list',
- ],
-)
-
-BUILTINS = {
- 'concatenate': [],
- 'false': [],
- 'pow': ['math.h'],
- 'print': ['stdio.h'],
- 'true': [],
-}
-
-def transform_variable_expression(accumulators, expression):
- assert isinstance(expression, conversion.CPSVariableExpression)
- return CVariableExpression(variable=expression.variable)
-
-def transform_string_literal_expression(accumulators, expression):
- value = expression.string
-
- try:
- index = accumulators.string_literal_list.index(value)
- except ValueError:
- index = len(accumulators.string_literal_list)
- accumulators.string_literal_list.append(value)
-
- return CStringLiteral(index=index, value=value)
-
-def transform_symbol_expression(accumulators, expression):
- if expression.symbol in BUILTINS:
- accumulators.builtin_set.add(expression.symbol)
-
- try:
- symbol_list_index = accumulators.symbol_list.index(expression.symbol)
- except ValueError:
- symbol_list_index = len(accumulators.symbol_list)
- accumulators.symbol_list.append(expression.symbol)
-
- return CSymbolExpression(
- symbol=expression.symbol,
- symbol_list_index=symbol_list_index,
- )
-
-def transform_integer_literal_expression(accumulators, expression):
- return CIntegerLiteral(value=expression.integer)
-
-CListConstructExpression = collections.namedtuple(
- 'CListConstructExpression',
- (
- 'allocate',
- ),
-)
-
-CLambdaExpression = collections.namedtuple(
- 'CLambdaExpression',
- (
- 'name',
- 'index',
- ),
-)
-
-CListAppendStatement = collections.namedtuple(
- 'CListAppendStatement',
- (
- 'list_expression',
- 'item_expression',
- ),
-)
-
-def transform_structure_literal_expression(accumulators, expression):
- return CStructureLiteralExpression(
- field_count=expression.field_count,
- symbol_list_variable=expression.symbol_list_variable,
- value_list_variable=expression.value_list_variable,
- )
-
-def transform_lambda_expression(accumulators, expression):
- if expression.name is None:
- name = '__lambda'
- else:
- name = expression.name
-
- index = accumulators.function_name_iterators.get(name, 0)
- accumulators.function_name_iterators[name] = index + 1
-
- accumulators.function_definition_list.append(CFunctionDefinition(
- name=name,
- index=index,
- argument_name_list=expression.argument_name_list,
- statement_list=tuple(transform_statement(accumulators, s) for s in expression.statement_list),
- ))
-
- return CLambdaExpression(
- name=name,
- index=index,
- )
-
-
-def transform_list_construct_expression(accumulators, expression):
- return CListConstructExpression(allocate=expression.allocate)
-
-def transform_list_append_statement(accumulators, expression):
- return CListAppendStatement(
- list_expression=transform_expression(accumulators, expression.list_expression),
- item_expression=transform_expression(accumulators, expression.item_expression),
- )
-
-def transform_expression(accumulators, expression):
- return {
- conversion.CPSFunctionCallExpression: transform_function_call_expression,
- conversion.CPSIfElseExpression: transform_if_else_expression,
- conversion.CPSIntegerLiteralExpression: transform_integer_literal_expression,
- conversion.CPSLambdaExpression: transform_lambda_expression,
- conversion.CPSListConstructExpression: transform_list_construct_expression,
- conversion.CPSStructureLiteralExpression: transform_structure_literal_expression,
- conversion.CPSStringLiteralExpression: transform_string_literal_expression,
- conversion.CPSSymbolExpression: transform_symbol_expression,
- conversion.CPSVariableExpression: transform_variable_expression,
- }[type(expression)](accumulators, expression)
-
-def transform_symbol_assignment_statement(accumulators, assignment_statement):
- # TODO Check that target is not a builtin
- try:
- symbol_list_index = accumulators.symbol_list.index(assignment_statement.target)
- except ValueError:
- symbol_list_index = len(accumulators.symbol_list)
- accumulators.symbol_list.append(assignment_statement.target)
-
- return CSymbolAssignmentStatement(
- target=assignment_statement.target,
- target_symbol_list_index=symbol_list_index,
- expression=transform_expression(
- accumulators,
- assignment_statement.expression,
- ),
- )
-
-def transform_function_call_expression(accumulators, function_call):
- # TODO Use the symbol from SYMBOL LIST
- return CFunctionCallExpression(
- metadata=function_call.metadata,
- function_expression=transform_expression(accumulators, function_call.function_expression),
- argument_count=function_call.argument_count,
- )
-
-def transform_expression_statement(accumulators, statement):
- return CExpressionStatement(
- expression=transform_expression(accumulators, statement.expression),
- )
-
-def transform_if_else_expression(accumulators, statement):
- return CIfElseExpression(
- condition_expression=transform_expression(accumulators, statement.condition_expression),
- if_statement_list=tuple(transform_statement(accumulators, s) for s in statement.if_statement_list),
- else_statement_list=tuple(transform_statement(accumulators, s) for s in statement.else_statement_list),
- )
-
-def transform_array_variable_initialization_statement(accumulators, statement):
- return CArrayVariableInitializationStatement(
- variable=statement.variable,
- items=tuple(transform_expression(accumulators, i) for i in statement.items),
- )
-
-def transform_symbol_array_variable_initialization_statement(accumulators, statement):
- symbol_list_indices = []
-
- for symbol in statement.symbol_list:
- try:
- symbol_list_index = accumulators.symbol_list.index(symbol)
- except ValueError:
- symbol_list_index = len(accumulators.symbol_list)
- accumulators.symbol_list.append(symbol)
-
- symbol_list_indices.append(symbol_list_index)
-
- return CSymbolArrayVariableInitializationStatement(
- variable=statement.variable,
- symbol_list=statement.symbol_list,
- symbol_list_indices=tuple(symbol_list_indices),
- )
-
-def transform_variable_initialization_statement(accumulators, statement):
- return CVariableInitializationStatement(
- variable=statement.variable,
- expression=transform_expression(accumulators, statement.expression),
- )
-
-def transform_push_statement(accumulators, statement):
- return CPushStatement(expression=transform_expression(accumulators, statement.expression))
-
-def transform_statement(accumulators, statement):
- return {
- conversion.CPSArrayVariableInitializationStatement: transform_array_variable_initialization_statement,
- conversion.CPSAssignmentStatement: transform_symbol_assignment_statement,
- conversion.CPSExpressionStatement: transform_expression_statement,
- conversion.CPSListAppendStatement: transform_list_append_statement,
- conversion.CPSPushStatement: transform_push_statement,
- conversion.CPSSymbolArrayVariableInitializationStatement: transform_symbol_array_variable_initialization_statement,
- conversion.CPSVariableInitializationStatement: transform_variable_initialization_statement,
- }[type(statement)](accumulators, statement)
-
-
-Accumulators = collections.namedtuple(
- 'Accumulators',
- [
- 'builtin_set',
- 'function_definition_list',
- 'function_name_iterators',
- 'operator_set',
- 'symbol_list',
- 'string_literal_list',
- ],
-)
-
-def transform(program):
- accumulators = Accumulators(
- builtin_set=set(),
- function_definition_list=[],
- function_name_iterators={},
- operator_set=set(),
- symbol_list=[],
- string_literal_list=[],
- )
-
- statement_list = [
- transform_statement(accumulators, statement) for statement in program.statement_list
- ]
-
- standard_library_set = set()
- for builtin in accumulators.builtin_set:
- for standard_library in BUILTINS[builtin]:
- standard_library_set.add(standard_library)
-
- return CProgram(
- builtin_set=accumulators.builtin_set,
- function_definition_list=accumulators.function_definition_list,
- operator_declarations=tuple(sorted(accumulators.operator_set)),
- statements=statement_list,
- standard_libraries=standard_library_set,
- string_literal_list=accumulators.string_literal_list,
- symbol_list=accumulators.symbol_list,
- )
-
-
-if __name__ == '__main__':
- import unittest
-
- unittest.main()
projects / fur / blobdiff