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_structure_literal_expression(expression):
30 return 'Structure_construct({}, {}, {})'.format(
31 expression.field_count,
32 expression.symbol_list_variable,
33 expression.value_list_variable,
36 def generate_lambda_expression(expression):
37 return '(Object){{ CLOSURE, (Instance)(Closure){{ environment, user${}${}$implementation }} }}'.format(
42 def generate_list_construct_expression(expression):
43 return 'List_construct({})'.format(expression.allocate)
45 def generate_expression(expression):
47 transformation.CFunctionCallExpression: generate_function_call,
48 transformation.CIntegerLiteral: generate_integer_literal,
49 transformation.CLambdaExpression: generate_lambda_expression,
50 transformation.CListConstructExpression: generate_list_construct_expression,
51 transformation.CStringLiteral: generate_string_literal,
52 transformation.CStructureLiteralExpression: generate_structure_literal_expression,
53 transformation.CSymbolExpression: generate_symbol_expression,
54 transformation.CVariableExpression: generate_variable_expression,
55 }[type(expression)](expression)
57 def generate_function_call(function_call):
58 # This gets called twice, so we want to be sure it is efficient and without side effects
59 assert isinstance(function_call.function_expression, transformation.CVariableExpression)
61 # TODO Check the type of the things being called
62 function_expression = generate_variable_expression(function_call.function_expression)
63 return '{}.instance.closure.call(environmentPool, {}.instance.closure.closed, {}, stack, {}, jump)'.format(
66 function_call.argument_count,
67 function_call.metadata.line,
70 def generate_expression_statement(statement):
71 return 'Object_deinitialize(&({}));'.format(generate_expression(statement.expression))
73 def generate_symbol_assignment_statement(statement):
74 return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
75 statement.target_symbol_list_index,
77 generate_expression(statement.expression),
80 def generate_array_variable_initialization_statement(statement):
81 return 'Object {}[] = {{ {} }};'.format(
83 ', '.join(generate_expression(i) for i in statement.items),
86 def generate_symbol_array_variable_initialization_statement(statement):
87 return 'const char* {}[] = {{ {} }};'.format(
89 ', '.join('SYMBOL_LIST[{}] /* symbol: "{}" */'.format(
90 statement.symbol_list_indices[i],
91 statement.symbol_list[i],
92 ) for i in range(len(statement.symbol_list))),
95 def generate_variable_initialization_statement(statement):
96 return 'Object {} = {};'.format(
98 generate_expression(statement.expression),
101 def generate_variable_reassignment_statement(statement):
102 return '{} = {};'.format(
104 generate_expression(statement.expression),
109 return '\n'.join(' ' * 2 + l for l in s.split('\n'))
111 def generate_if_else_statement(statement):
112 # TODO Check that the argument is boolean
113 condition_expression = '{}.instance.boolean'.format(
114 generate_expression(statement.condition_expression),
117 if len(statement.if_statement_list) == 0:
118 condition_expression = '!({})'.format(condition_expression)
119 if_statement_list = statement.else_statement_list
120 else_statement_list = ()
122 if_statement_list = statement.if_statement_list
123 else_statement_list = statement.else_statement_list
125 generated_if_clause = 'if({})'.format(condition_expression)
127 if len(if_statement_list) == 0:
128 generated_if_statement_list = ';'
130 generated_if_statement_list = indent('\n{{\n{}\n}}'.format(
131 indent('\n'.join(generate_statement(s) for s in if_statement_list)),
134 if len(else_statement_list) == 0:
135 generated_else_statement_list = ''
137 generated_else_statement_list = indent('\nelse\n{{\n{}\n}}'.format(
138 indent('\n'.join(generate_statement(s) for s in else_statement_list)),
141 return generated_if_clause + generated_if_statement_list + generated_else_statement_list
143 def generate_list_append_statement(statement):
144 return 'List_append(&{}, {});'.format(
145 generate_expression(statement.list_expression),
146 generate_expression(statement.item_expression),
149 def generate_push_statement(statement):
150 return 'Stack_push(stack, {});'.format(generate_expression(statement.expression))
152 def generate_statement(statement):
154 transformation.CArrayVariableInitializationStatement: generate_array_variable_initialization_statement,
155 transformation.CExpressionStatement: generate_expression_statement,
156 transformation.CIfElseStatement: generate_if_else_statement,
157 transformation.CListAppendStatement: generate_list_append_statement,
158 transformation.CPushStatement: generate_push_statement,
159 transformation.CSymbolAssignmentStatement: generate_symbol_assignment_statement,
160 transformation.CSymbolArrayVariableInitializationStatement: generate_symbol_array_variable_initialization_statement,
161 transformation.CVariableInitializationStatement: generate_variable_initialization_statement,
162 transformation.CVariableReassignmentStatement: generate_variable_reassignment_statement,
163 }[type(statement)](statement)
165 def generate_function_definition(definition):
166 template = ENV.get_template('function_definition.c')
167 return template.render(
168 name=definition.name,
169 index=definition.index,
170 argument_name_list=definition.argument_name_list,
171 statement_list=list(generate_statement(s) for s in definition.statement_list),
179 def escape_character(ch):
180 return C_ESCAPES.get(ch, ch)
182 def escape_string_literal(string_literal):
183 return ''.join(escape_character(ch) for ch in string_literal)
185 def generate(program):
186 template = ENV.get_template('program.c')
187 return template.render(
188 builtins=tuple(sorted(program.builtin_set)),
189 function_definition_list=list(generate_function_definition(fd) for fd in program.function_definition_list),
190 infix_declarations=program.operator_declarations,
191 statements=list(generate_statement(s) for s in program.statements),
192 standard_libraries=list(sorted(program.standard_libraries)),
193 string_literal_list=list(escape_string_literal(s) for s in program.string_literal_list),
194 symbol_list=program.symbol_list,
197 if __name__ == '__main__':