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)),
27 CONSTANT_EXPRESSION_MAPPING = {
32 def generate_constant_expression(c_constant_expression):
33 return CONSTANT_EXPRESSION_MAPPING[c_constant_expression.value]
35 def generate_symbol_expression(c_symbol_expression):
36 return 'Environment_get(environment, SYMBOL_LIST[{}] /* symbol: {} */)'.format(
37 c_symbol_expression.symbol_list_index,
38 c_symbol_expression.symbol,
41 def generate_expression(c_argument):
42 if isinstance(c_argument, transformation.CNegationExpression):
43 return generate_negation_expression(c_argument)
45 if isinstance(c_argument, transformation.CFunctionCallExpression):
46 return generate_function_call(c_argument)
48 LITERAL_TYPE_MAPPING = {
49 transformation.CIntegerLiteral: generate_integer_literal,
50 transformation.CStringLiteral: generate_string_literal,
51 transformation.CConstantExpression: generate_constant_expression,
52 transformation.CSymbolExpression: generate_symbol_expression,
55 if type(c_argument) in LITERAL_TYPE_MAPPING:
56 return LITERAL_TYPE_MAPPING[type(c_argument)](c_argument)
58 INFIX_TYPE_MAPPING = {
59 transformation.CAdditionExpression: 'add',
60 transformation.CSubtractionExpression: 'subtract',
61 transformation.CMultiplicationExpression: 'multiply',
62 transformation.CIntegerDivisionExpression: 'integerDivide',
63 transformation.CModularDivisionExpression: 'modularDivide',
66 return 'builtin${}({}, {})'.format(
67 INFIX_TYPE_MAPPING[type(c_argument)],
68 generate_expression(c_argument.left),
69 generate_expression(c_argument.right),
72 def generate_negation_expression(c_negation_expression):
73 return 'builtin$negate({})'.format(
74 generate_expression(c_negation_expression.value)
77 def generate_function_call(c_function_call):
78 return '{}({})'.format(
80 ', '.join(generate_expression(argument) for argument in c_function_call.arguments),
83 def generate_expression_statement(c_function_call_statement):
84 # TODO Do we need to garbage collect the results of arbitrary statements?
85 return '{};'.format(generate_expression(c_function_call_statement))
87 def generate_assignment_statement(c_assignment_statement):
88 return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
89 c_assignment_statement.target_symbol_list_index,
90 c_assignment_statement.target,
91 generate_expression(c_assignment_statement.expression),
94 def generate_statement(statement):
95 if isinstance(statement, transformation.CAssignmentStatement):
96 return generate_assignment_statement(statement)
98 return generate_expression_statement(statement)
100 def generate(c_program):
101 template = ENV.get_template('program.c')
102 return template.render(
103 builtins=list(sorted(c_program.builtins)),
104 statements=[generate_statement(statement) for statement in c_program.statements],
105 standard_libraries=list(sorted(c_program.standard_libraries)),
106 symbol_list=c_program.symbol_list,
109 if __name__ == '__main__':