c_symbol_expression.symbol,
)
+def generate_variable_expression(expression):
+ return expression.variable
+
def generate_expression(expression):
if isinstance(expression, transformation.CNegationExpression):
return generate_negation_expression(expression)
generate_expression(expression.right),
)
- raise Exception('Could not handle expresssion "{}"'.format(expression))
+ return {
+ transformation.CVariableExpression: generate_variable_expression,
+ }[type(expression)](expression)
def generate_negation_expression(c_negation_expression):
return 'builtin$negate({})'.format(
', '.join(generate_expression(argument) for argument in c_function_call.arguments),
)
-def generate_expression_statement(c_function_call_statement):
+def generate_expression_statement(statement):
# TODO Do we need to garbage collect the results of arbitrary statements?
- return '{};'.format(generate_expression(c_function_call_statement))
+ return '{};'.format(generate_expression(statement.expression))
-def generate_assignment_statement(c_assignment_statement):
+def generate_symbol_assignment_statement(c_assignment_statement):
return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
c_assignment_statement.target_symbol_list_index,
c_assignment_statement.target,
generate_expression(c_assignment_statement.expression),
)
-def generate_statement(statement):
- if isinstance(statement, transformation.CAssignmentStatement):
- return generate_assignment_statement(statement)
+def generate_variable_initialization_statement(statement):
+ return 'Object {} = {};'.format(
+ statement.variable,
+ generate_expression(statement.expression),
+ )
+
+def generate_variable_reassignment_statement(statement):
+ return '{} = {};'.format(
+ statement.variable,
+ generate_expression(statement.expression),
+ )
- return generate_expression_statement(statement)
+
+def indent(s):
+ return '\n'.join(' ' * 2 + l for l in s.split('\n'))
+
+def generate_if_else_statement(statement):
+ # TODO Check that the argument is boolean
+ return 'if({}.instance.boolean)\n{{\n{}\n}}\nelse\n{{\n{}\n}}'.format(
+ generate_expression(statement.condition_expression),
+ indent('\n'.join(generate_statement(s) for s in statement.if_statements)),
+ indent('\n'.join(generate_statement(s) for s in statement.else_statements)),
+ )
+
+def generate_statement(statement):
+ return {
+ transformation.CExpressionStatement: generate_expression_statement,
+ transformation.CIfElseStatement: generate_if_else_statement,
+ transformation.CSymbolAssignmentStatement: generate_symbol_assignment_statement,
+ transformation.CVariableInitializationStatement: generate_variable_initialization_statement,
+ transformation.CVariableReassignmentStatement: generate_variable_reassignment_statement,
+ }[type(statement)](statement)
def generate(program):
template = ENV.get_template('program.c')