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):
15 return 'stringLiteral(STRING_LITERAL_LIST[{}])'.format(c_string_literal.index)
17 def generate_symbol_expression(symbol_expression):
18 return 'Environment_get(environment, SYMBOL_LIST[{}] /* symbol: {} */)'.format(
19 symbol_expression.symbol_list_index,
20 symbol_expression.symbol,
23 def generate_variable_expression(expression):
24 return expression.variable
26 def generate_function_call_for_fur_infix_operator(expression):
27 return 'operator${}({}, {})'.format(
29 generate_expression(expression.left),
30 generate_expression(expression.right),
33 def generate_list_construct_expression(expression):
34 return 'List_construct({})'.format(expression.allocate)
36 def generate_list_get_expression(expression):
37 return 'List_get(&{}, {})'.format(
38 generate_expression(expression.list_expression),
39 generate_expression(expression.index_expression),
42 def generate_expression(expression):
44 transformation.CFunctionCallExpression: generate_function_call,
45 transformation.CFunctionCallForFurInfixOperator: generate_function_call_for_fur_infix_operator,
46 transformation.CIntegerLiteral: generate_integer_literal,
47 transformation.CListConstructExpression: generate_list_construct_expression,
48 transformation.CListGetExpression: generate_list_get_expression,
49 transformation.CNegationExpression: generate_negation_expression,
50 transformation.CStringLiteral: generate_string_literal,
51 transformation.CSymbolExpression: generate_symbol_expression,
52 transformation.CVariableExpression: generate_variable_expression,
53 }[type(expression)](expression)
55 def generate_negation_expression(c_negation_expression):
56 return 'operator$negate({})'.format(
57 generate_expression(c_negation_expression.value)
60 def generate_function_call(function_call):
61 # This gets called twice, so we want to be sure it is efficient and without side effects
62 assert isinstance(function_call.function_expression, transformation.CVariableExpression)
64 # TODO Check the type of the things being called
65 function_expression = generate_variable_expression(function_call.function_expression)
66 return '{}.instance.closure.call(environmentPool, {}.instance.closure.closed, {}, {})'.format(
69 function_call.argument_count,
70 # TODO This is just a single item containing a reference to the items list--make that clearer
71 generate_expression(function_call.argument_items),
74 def generate_expression_statement(statement):
75 # TODO Do we need to garbage collect the results of arbitrary statements?
76 return '{};'.format(generate_expression(statement.expression))
78 def generate_symbol_assignment_statement(statement):
79 return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
80 statement.target_symbol_list_index,
82 generate_expression(statement.expression),
85 def generate_array_variable_initialization_statement(statement):
86 return 'Object {}[] = {{ {} }};'.format(
88 ', '.join(generate_expression(i) for i in statement.items),
91 def generate_variable_initialization_statement(statement):
92 return 'Object {} = {};'.format(
94 generate_expression(statement.expression),
97 def generate_variable_reassignment_statement(statement):
98 return '{} = {};'.format(
100 generate_expression(statement.expression),
105 return '\n'.join(' ' * 2 + l for l in s.split('\n'))
107 def generate_if_else_statement(statement):
108 # TODO Check that the argument is boolean
109 condition_expression = '{}.instance.boolean'.format(
110 generate_expression(statement.condition_expression),
113 if len(statement.if_statement_list) == 0:
114 condition_expression = '!({})'.format(condition_expression)
115 if_statement_list = statement.else_statement_list
116 else_statement_list = ()
118 if_statement_list = statement.if_statement_list
119 else_statement_list = statement.else_statement_list
121 generated_if_clause = 'if({})'.format(condition_expression)
123 if len(if_statement_list) == 0:
124 generated_if_statement_list = ';'
126 generated_if_statement_list = indent('\n{{\n{}\n}}'.format(
127 indent('\n'.join(generate_statement(s) for s in if_statement_list)),
130 if len(else_statement_list) == 0:
131 generated_else_statement_list = ''
133 generated_else_statement_list = indent('\nelse\n{{\n{}\n}}'.format(
134 indent('\n'.join(generate_statement(s) for s in else_statement_list)),
137 return generated_if_clause + generated_if_statement_list + generated_else_statement_list
139 def generate_function_declaration(statement):
140 return 'Environment_set(environment, "{}", (Object){{ CLOSURE, (Instance)(Closure){{ environment, user${}$implementation }} }});'.format(statement.name, statement.name)
142 def generate_list_append_statement(statement):
143 return 'List_append(&{}, {});'.format(
144 generate_expression(statement.list_expression),
145 generate_expression(statement.item_expression),
148 def generate_statement(statement):
150 transformation.CArrayVariableInitializationStatement: generate_array_variable_initialization_statement,
151 transformation.CExpressionStatement: generate_expression_statement,
152 transformation.CFunctionDeclaration: generate_function_declaration,
153 transformation.CIfElseStatement: generate_if_else_statement,
154 transformation.CListAppendStatement: generate_list_append_statement,
155 transformation.CSymbolAssignmentStatement: generate_symbol_assignment_statement,
156 transformation.CVariableInitializationStatement: generate_variable_initialization_statement,
157 transformation.CVariableReassignmentStatement: generate_variable_reassignment_statement,
158 }[type(statement)](statement)
160 def generate_function_definition(definition):
161 template = ENV.get_template('function_definition.c')
162 return template.render(
163 name=definition.name,
164 argument_name_list=definition.argument_name_list,
165 statement_list=list(generate_statement(s) for s in definition.statement_list),
169 def generate(program):
170 template = ENV.get_template('program.c')
171 return template.render(
172 builtins=tuple(sorted(program.builtin_set)),
173 function_definition_list=list(generate_function_definition(fd) for fd in program.function_definition_list),
174 infix_declarations=program.operator_declarations,
175 statements=list(generate_statement(s) for s in program.statements),
176 standard_libraries=list(sorted(program.standard_libraries)),
177 string_literal_list=program.string_literal_list,
178 symbol_list=program.symbol_list,
181 if __name__ == '__main__':