6 ENV = jinja2.Environment(
7 autoescape=jinja2.select_autoescape([]),
8 loader=jinja2.FileSystemLoader('templates'),
12 def generate_integer_literal(c_integer_literal):
13 return 'integerLiteral({})'.format(c_integer_literal.value)
15 def generate_string_literal(c_string_literal):
23 return 'stringLiteral(runtime, "{}")'.format(
24 ''.join(c_escape(ch for ch in c_string_literal.value)),
27 def generate_symbol_expression(c_symbol_expression):
28 return 'Environment_get(environment, Runtime_symbol(runtime, "{}"))'.format(c_symbol_expression.value)
30 def generate_expression(c_argument):
31 if isinstance(c_argument, transformation.CNegationExpression):
32 return generate_negation_expression(c_argument)
34 if isinstance(c_argument, transformation.CFunctionCallExpression):
35 return generate_function_call(c_argument)
37 LITERAL_TYPE_MAPPING = {
38 transformation.CIntegerLiteral: generate_integer_literal,
39 transformation.CStringLiteral: generate_string_literal,
40 transformation.CSymbolExpression: generate_symbol_expression,
43 if type(c_argument) in LITERAL_TYPE_MAPPING:
44 return LITERAL_TYPE_MAPPING[type(c_argument)](c_argument)
46 INFIX_TYPE_MAPPING = {
47 transformation.CAdditionExpression: 'add',
48 transformation.CSubtractionExpression: 'subtract',
49 transformation.CMultiplicationExpression: 'multiply',
50 transformation.CIntegerDivisionExpression: 'integerDivide',
51 transformation.CModularDivisionExpression: 'modularDivide',
54 return 'builtin${}({}, {})'.format(
55 INFIX_TYPE_MAPPING[type(c_argument)],
56 generate_expression(c_argument.left),
57 generate_expression(c_argument.right),
60 def generate_negation_expression(c_negation_expression):
61 return 'builtin$negate({})'.format(
62 generate_expression(c_negation_expression.value)
65 def generate_function_call(c_function_call):
66 return '{}({})'.format(
68 ', '.join(generate_expression(argument) for argument in c_function_call.arguments),
71 def generate_expression_statement(c_function_call_statement):
72 # TODO Do we need to garbage collect the results of arbitrary statements?
73 return '{};'.format(generate_expression(c_function_call_statement))
75 def generate_assignment_statement(c_assignment_statement):
76 return 'Environment_set(environment, Runtime_symbol(runtime, "{}"), {});'.format(
77 c_assignment_statement.target,
78 generate_expression(c_assignment_statement.expression),
81 def generate_statement(statement):
82 if isinstance(statement, transformation.CAssignmentStatement):
83 return generate_assignment_statement(statement)
85 return generate_expression_statement(statement)
87 def generate(c_program):
88 template = ENV.get_template('program.c')
89 return template.render(
90 MAX_SYMBOL_LENGTH=parsing.MAX_SYMBOL_LENGTH,
91 builtins=list(sorted(c_program.builtins)),
92 statements=[generate_statement(statement) for statement in c_program.statements],
93 standard_libraries=list(sorted(c_program.standard_libraries)),
96 if __name__ == '__main__':