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[{}] /* string: {} */)'.format(
16 c_string_literal.index,
17 repr(c_string_literal.value),
20 def generate_symbol_expression(symbol_expression):
21 return 'Environment_get(environment, SYMBOL_LIST[{}] /* symbol: {} */)'.format(
22 symbol_expression.symbol_list_index,
23 symbol_expression.symbol,
26 def generate_variable_expression(expression):
27 return expression.variable
29 def generate_function_call_for_fur_infix_operator(expression):
30 return 'operator${}({}, {})'.format(
32 generate_expression(expression.left),
33 generate_expression(expression.right),
36 def generate_structure_literal_expression(expression):
37 return 'Structure_construct({}, {}, {})'.format(
38 expression.field_count,
39 expression.symbol_list_variable,
40 expression.value_list_variable,
43 def generate_dot_expression(expression):
44 return 'Structure_get(&{}, SYMBOL_LIST[{}] /* symbol: "{}" */)'.format(
45 generate_variable_expression(expression.instance),
46 expression.symbol_list_index,
50 def generate_list_construct_expression(expression):
51 return 'List_construct({})'.format(expression.allocate)
53 def generate_list_get_expression(expression):
54 return 'List_get(&{}, {})'.format(
55 generate_expression(expression.list_expression),
56 generate_expression(expression.index_expression),
59 def generate_expression(expression):
61 transformation.CDotExpression: generate_dot_expression,
62 transformation.CFunctionCallExpression: generate_function_call,
63 transformation.CFunctionCallForFurInfixOperator: generate_function_call_for_fur_infix_operator,
64 transformation.CIntegerLiteral: generate_integer_literal,
65 transformation.CListConstructExpression: generate_list_construct_expression,
66 transformation.CListGetExpression: generate_list_get_expression,
67 transformation.CNegationExpression: generate_negation_expression,
68 transformation.CStringLiteral: generate_string_literal,
69 transformation.CStructureLiteralExpression: generate_structure_literal_expression,
70 transformation.CSymbolExpression: generate_symbol_expression,
71 transformation.CVariableExpression: generate_variable_expression,
72 }[type(expression)](expression)
74 def generate_negation_expression(c_negation_expression):
75 return 'operator$negate({})'.format(
76 generate_expression(c_negation_expression.value)
79 def generate_function_call(function_call):
80 # This gets called twice, so we want to be sure it is efficient and without side effects
81 assert isinstance(function_call.function_expression, transformation.CVariableExpression)
83 # TODO Check the type of the things being called
84 function_expression = generate_variable_expression(function_call.function_expression)
85 return '{}.instance.closure.call(environmentPool, {}.instance.closure.closed, {}, stack)'.format(
88 function_call.argument_count,
91 def generate_expression_statement(statement):
92 return 'Object_deinitialize(&({}));'.format(generate_expression(statement.expression))
94 def generate_symbol_assignment_statement(statement):
95 return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
96 statement.target_symbol_list_index,
98 generate_expression(statement.expression),
101 def generate_array_variable_initialization_statement(statement):
102 return 'Object {}[] = {{ {} }};'.format(
104 ', '.join(generate_expression(i) for i in statement.items),
107 def generate_symbol_array_variable_initialization_statement(statement):
108 return 'const char* {}[] = {{ {} }};'.format(
110 ', '.join('SYMBOL_LIST[{}] /* symbol: "{}" */'.format(
111 statement.symbol_list_indices[i],
112 statement.symbol_list[i],
113 ) for i in range(len(statement.symbol_list))),
116 def generate_variable_initialization_statement(statement):
117 return 'Object {} = {};'.format(
119 generate_expression(statement.expression),
122 def generate_variable_reassignment_statement(statement):
123 return '{} = {};'.format(
125 generate_expression(statement.expression),
130 return '\n'.join(' ' * 2 + l for l in s.split('\n'))
132 def generate_if_else_statement(statement):
133 # TODO Check that the argument is boolean
134 condition_expression = '{}.instance.boolean'.format(
135 generate_expression(statement.condition_expression),
138 if len(statement.if_statement_list) == 0:
139 condition_expression = '!({})'.format(condition_expression)
140 if_statement_list = statement.else_statement_list
141 else_statement_list = ()
143 if_statement_list = statement.if_statement_list
144 else_statement_list = statement.else_statement_list
146 generated_if_clause = 'if({})'.format(condition_expression)
148 if len(if_statement_list) == 0:
149 generated_if_statement_list = ';'
151 generated_if_statement_list = indent('\n{{\n{}\n}}'.format(
152 indent('\n'.join(generate_statement(s) for s in if_statement_list)),
155 if len(else_statement_list) == 0:
156 generated_else_statement_list = ''
158 generated_else_statement_list = indent('\nelse\n{{\n{}\n}}'.format(
159 indent('\n'.join(generate_statement(s) for s in else_statement_list)),
162 return generated_if_clause + generated_if_statement_list + generated_else_statement_list
164 def generate_function_declaration(statement):
165 return 'Environment_set(environment, "{}", (Object){{ CLOSURE, (Instance)(Closure){{ environment, user${}$implementation }} }});'.format(statement.name, statement.name)
167 def generate_list_append_statement(statement):
168 return 'List_append(&{}, {});'.format(
169 generate_expression(statement.list_expression),
170 generate_expression(statement.item_expression),
173 def generate_push_statement(statement):
174 return 'Stack_push(stack, {});'.format(generate_expression(statement.expression))
176 def generate_statement(statement):
178 transformation.CArrayVariableInitializationStatement: generate_array_variable_initialization_statement,
179 transformation.CExpressionStatement: generate_expression_statement,
180 transformation.CFunctionDeclaration: generate_function_declaration,
181 transformation.CIfElseStatement: generate_if_else_statement,
182 transformation.CListAppendStatement: generate_list_append_statement,
183 transformation.CPushStatement: generate_push_statement,
184 transformation.CSymbolAssignmentStatement: generate_symbol_assignment_statement,
185 transformation.CSymbolArrayVariableInitializationStatement: generate_symbol_array_variable_initialization_statement,
186 transformation.CVariableInitializationStatement: generate_variable_initialization_statement,
187 transformation.CVariableReassignmentStatement: generate_variable_reassignment_statement,
188 }[type(statement)](statement)
190 def generate_function_definition(definition):
191 template = ENV.get_template('function_definition.c')
192 return template.render(
193 name=definition.name,
194 argument_name_list=definition.argument_name_list,
195 statement_list=list(generate_statement(s) for s in definition.statement_list),
203 def escape_character(ch):
204 return C_ESCAPES.get(ch, ch)
206 def escape_string_literal(string_literal):
207 return ''.join(escape_character(ch) for ch in string_literal)
209 def generate(program):
210 template = ENV.get_template('program.c')
211 return template.render(
212 builtins=tuple(sorted(program.builtin_set)),
213 function_definition_list=list(generate_function_definition(fd) for fd in program.function_definition_list),
214 infix_declarations=program.operator_declarations,
215 statements=list(generate_statement(s) for s in program.statements),
216 standard_libraries=list(sorted(program.standard_libraries)),
217 string_literal_list=list(escape_string_literal(s) for s in program.string_literal_list),
218 symbol_list=program.symbol_list,
221 if __name__ == '__main__':