5 ENV = jinja2.Environment(
6 autoescape=jinja2.select_autoescape([]),
7 loader=jinja2.FileSystemLoader('templates'),
11 def generate_integer_literal(c_integer_literal):
12 return 'integerLiteral({})'.format(c_integer_literal.value)
14 def generate_string_literal(c_string_literal):
22 return 'stringLiteral(runtime, "{}")'.format(
23 ''.join(c_escape(ch for ch in c_string_literal.value)),
26 def generate_symbol_expression(c_symbol_expression):
27 return 'Environment_get(environment, SYMBOL_LIST[{}] /* symbol: {} */)'.format(
28 c_symbol_expression.symbol_list_index,
29 c_symbol_expression.symbol,
32 def generate_expression(c_argument):
33 if isinstance(c_argument, transformation.CNegationExpression):
34 return generate_negation_expression(c_argument)
36 if isinstance(c_argument, transformation.CFunctionCallExpression):
37 return generate_function_call(c_argument)
39 LITERAL_TYPE_MAPPING = {
40 transformation.CIntegerLiteral: generate_integer_literal,
41 transformation.CStringLiteral: generate_string_literal,
42 transformation.CSymbolExpression: generate_symbol_expression,
45 if type(c_argument) in LITERAL_TYPE_MAPPING:
46 return LITERAL_TYPE_MAPPING[type(c_argument)](c_argument)
48 INFIX_TYPE_MAPPING = {
49 transformation.CAdditionExpression: 'add',
50 transformation.CSubtractionExpression: 'subtract',
51 transformation.CMultiplicationExpression: 'multiply',
52 transformation.CIntegerDivisionExpression: 'integerDivide',
53 transformation.CModularDivisionExpression: 'modularDivide',
56 return 'builtin${}({}, {})'.format(
57 INFIX_TYPE_MAPPING[type(c_argument)],
58 generate_expression(c_argument.left),
59 generate_expression(c_argument.right),
62 def generate_negation_expression(c_negation_expression):
63 return 'builtin$negate({})'.format(
64 generate_expression(c_negation_expression.value)
67 def generate_function_call(c_function_call):
68 return '{}({})'.format(
70 ', '.join(generate_expression(argument) for argument in c_function_call.arguments),
73 def generate_expression_statement(c_function_call_statement):
74 # TODO Do we need to garbage collect the results of arbitrary statements?
75 return '{};'.format(generate_expression(c_function_call_statement))
77 def generate_assignment_statement(c_assignment_statement):
78 return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
79 c_assignment_statement.target_symbol_list_index,
80 c_assignment_statement.target,
81 generate_expression(c_assignment_statement.expression),
84 def generate_statement(statement):
85 if isinstance(statement, transformation.CAssignmentStatement):
86 return generate_assignment_statement(statement)
88 return generate_expression_statement(statement)
90 def generate(c_program):
91 template = ENV.get_template('program.c')
92 return template.render(
93 builtins=list(sorted(c_program.builtins)),
94 statements=[generate_statement(statement) for statement in c_program.statements],
95 standard_libraries=list(sorted(c_program.standard_libraries)),
96 symbol_list=c_program.symbol_list,
99 if __name__ == '__main__':