code.kerkeslager.com Git - fur/blob - generation.py

   1 import jinja2
   2
   3 import transformation
   4
   5 ENV = jinja2.Environment(
   6     autoescape=jinja2.select_autoescape([]),
   7     loader=jinja2.FileSystemLoader('templates'),
   8     trim_blocks=True,
   9 )
  10
  11 def generate_integer_literal(c_integer_literal):
  12     return 'integerLiteral({})'.format(c_integer_literal.value)
  13
  14 def generate_string_literal(c_string_literal):
  15     def c_escape(ch):
  16         return {
  17             '\n': r'\n',
  18             '"': r'\"',
  19             '\\': r'\\',
  20         }.get(ch, ch)
  21
  22     return 'stringLiteral(runtime, "{}")'.format(
  23         ''.join(c_escape(ch for ch in c_string_literal.value)),
  24     )
  25
  26 def generate_argument(c_argument):
  27     return {
  28         transformation.CIntegerLiteral: generate_integer_literal,
  29         transformation.CStringLiteral: generate_string_literal,
  30     }[type(c_argument)](c_argument)
  31
  32 def generate_statement(c_function_call_statement):
  33     return '{}({});'.format(
  34         c_function_call_statement.name,
  35         ', '.join(generate_argument(argument) for argument in c_function_call_statement.arguments),
  36     )
  37
  38 def generate(c_program):
  39     template = ENV.get_template('program.c')
  40     return template.render(
  41         builtins=list(sorted(c_program.builtins)),
  42         statements=[generate_statement(statement) for statement in c_program.statements],
  43         standard_libraries=set(['stdio.h']),
  44     )
  45
  46 if __name__ == '__main__':
  47     import unittest
  48
  49     unittest.main()