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_expression(expression):
27 if isinstance(expression, transformation.CNegationExpression):
28 return generate_negation_expression(expression)
30 if isinstance(expression, transformation.CFunctionCallExpression):
31 return generate_function_call(expression)
33 LITERAL_TYPE_MAPPING = {
34 transformation.CIntegerLiteral: generate_integer_literal,
35 transformation.CStringLiteral: generate_string_literal,
36 transformation.CSymbolExpression: generate_symbol_expression,
39 if type(expression) in LITERAL_TYPE_MAPPING:
40 return LITERAL_TYPE_MAPPING[type(expression)](expression)
42 if isinstance(expression, transformation.CFunctionCallForFurInfixOperator):
43 return 'operator${}({}, {})'.format(
45 generate_expression(expression.left),
46 generate_expression(expression.right),
50 transformation.CVariableExpression: generate_variable_expression,
51 }[type(expression)](expression)
53 def generate_negation_expression(c_negation_expression):
54 return 'operator$negate({})'.format(
55 generate_expression(c_negation_expression.value)
58 def generate_function_call(function_call):
59 # TODO This gets called twice, which is really inefficient--normalization would also allow other clauses besides a variable reference
60 # TODO This should no longer be called "name", as it can be an expression of a few types
61 # TODO Check the type of the things being called
62 get_closure_clause = generate_expression(function_call.name)
63 return '{}.instance.closure.call(environmentPool, {}.instance.closure.closed, {}, {})'.format(
66 function_call.argument_count,
67 # TODO This is just a single item containing a reference to the items list--make that clearer
68 generate_expression(function_call.argument_items),
71 def generate_expression_statement(statement):
72 # TODO Do we need to garbage collect the results of arbitrary statements?
73 return '{};'.format(generate_expression(statement.expression))
75 def generate_symbol_assignment_statement(statement):
76 return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
77 statement.target_symbol_list_index,
79 generate_expression(statement.expression),
82 def generate_array_variable_initialization_statement(statement):
83 return 'Object {}[] = {{ {} }};'.format(
85 ', '.join(generate_expression(i) for i in statement.items),
88 def generate_variable_initialization_statement(statement):
89 return 'Object {} = {};'.format(
91 generate_expression(statement.expression),
94 def generate_variable_reassignment_statement(statement):
95 return '{} = {};'.format(
97 generate_expression(statement.expression),
102 return '\n'.join(' ' * 2 + l for l in s.split('\n'))
104 def generate_if_else_statement(statement):
105 # TODO Check that the argument is boolean
106 condition_expression = '{}.instance.boolean'.format(
107 generate_expression(statement.condition_expression),
110 if len(statement.if_statements) == 0:
111 condition_expression = '!({})'.format(condition_expression)
112 if_statements = statement.else_statements
115 if_statements = statement.if_statements
116 else_statements = statement.else_statements
118 generated_if_clause = 'if({})'.format(condition_expression)
120 if len(if_statements) == 0:
121 generated_if_statements = ';'
123 generated_if_statements = indent('\n{{\n{}\n}}'.format(
124 indent('\n'.join(generate_statement(s) for s in if_statements)),
127 if len(else_statements) == 0:
128 generated_else_statements = ''
130 generated_else_statements = indent('\nelse\n{{\n{}\n}}'.format(
131 indent('\n'.join(generate_statement(s) for s in else_statements)),
134 return generated_if_clause + generated_if_statements + generated_else_statements
136 def generate_function_declaration(statement):
137 return 'Environment_set(environment, "{}", (Object){{ CLOSURE, (Instance)(Closure){{ environment, user${}$implementation }} }});'.format(statement.name, statement.name)
139 def generate_statement(statement):
141 transformation.CExpressionStatement: generate_expression_statement,
142 transformation.CFunctionDeclaration: generate_function_declaration,
143 transformation.CIfElseStatement: generate_if_else_statement,
144 transformation.CSymbolAssignmentStatement: generate_symbol_assignment_statement,
145 transformation.CArrayVariableInitializationStatement: generate_array_variable_initialization_statement,
146 transformation.CVariableInitializationStatement: generate_variable_initialization_statement,
147 transformation.CVariableReassignmentStatement: generate_variable_reassignment_statement,
148 }[type(statement)](statement)
150 def generate_function_definition(definition):
151 template = ENV.get_template('function_definition.c')
152 return template.render(
153 name=definition.name,
154 argument_name_list=definition.argument_name_list,
155 statement_list=list(generate_statement(s) for s in definition.statement_list),
159 def generate(program):
160 template = ENV.get_template('program.c')
161 return template.render(
162 builtins=tuple(sorted(program.builtin_set)),
163 function_definition_list=list(generate_function_definition(fd) for fd in program.function_definition_list),
164 infix_declarations=program.operator_declarations,
165 statements=list(generate_statement(s) for s in program.statements),
166 standard_libraries=list(sorted(program.standard_libraries)),
167 string_literal_list=program.string_literal_list,
168 symbol_list=program.symbol_list,
171 if __name__ == '__main__':