def generate_symbol_literal(symbol):
return 'sym({})'.format(symbol)
-def generate_function_call_expression(expression):
- return generate_expression(expression.function_expression) + (
+def generate_instruction_name_from_builtin(builtin):
+ try:
+ return {
+ # Environment operations
+ '__get__': 'get',
+
+ # Integer operations
+ '__add__': 'add',
+ '__integer_divide__': 'idiv',
+ '__modular_divide__': 'mod',
+ '__multiply__': 'mul',
+ '__negate__': 'neg',
+ '__subtract__': 'sub',
+
+ # Boolean operations
+ '__eq__': 'eq',
+ '__neq__': 'neq',
+ '__lt__': 'lt',
+ '__lte__': 'lte',
+ '__gt__': 'gt',
+ '__gte__': 'gte',
+
+ # String operations
+ '__concat__': 'concat',
+ }[builtin]
+
+ except KeyError:
+ import ipdb; ipdb.set_trace()
+
+def generate_function_call_expression(counters, expression):
+ if isinstance(expression.function_expression, conversion.CPSBuiltinExpression):
+ return (
+ (),
+ (
+ CIRInstruction(
+ instruction=generate_instruction_name_from_builtin(
+ expression.function_expression.symbol,
+ ),
+ argument=expression.argument_count,
+ ),
+ )
+ )
+
+ referenced_entry_list, instruction_list = generate_expression(
+ counters,
+ expression.function_expression,
+ )
+
+ instruction_list += (
CIRInstruction(
instruction='call',
argument=expression.argument_count,
),
)
-def generate_integer_literal_expression(expression):
- return (CIRInstruction(
- instruction='push_value',
+ return referenced_entry_list, instruction_list
+
+def generate_integer_literal_expression(counters, expression):
+ referenced_entry_list = ()
+ instruction_list = (CIRInstruction(
+ instruction='push_integer',
argument=generate_integer_literal(expression.integer),
),)
-def generate_string_literal_expression(expression):
- return (CIRInstruction(
- instruction='push_value',
+ return referenced_entry_list, instruction_list
+
+def escape_name(name):
+ return name.replace('$','$$').replace('_','$')
+
+def generate_lambda_expression(counters, expression):
+ if expression.name is None:
+ name = '__lambda__'
+ else:
+ name = escape_name(expression.name)
+
+ name_counter = counters.get(name, 0)
+ counters[expression.name] = name_counter + 1
+ label = '{}${}'.format(name, name_counter)
+
+ referenced_entry_list_list = []
+ instruction_list_list = []
+
+ for statement in expression.statement_list:
+ referenced_entry_list, instruction_list = generate_statement(counters, statement)
+ referenced_entry_list_list.append(referenced_entry_list)
+ instruction_list_list.append(instruction_list)
+
+ # Pop from the stack in reversed order, because arguments were pushed onto
+ # the stack in order
+ argument_bindings = tuple(
+ CIRInstruction(instruction='pop', argument='sym({})'.format(arg))
+ for arg in reversed(expression.argument_name_list)
+ )
+
+ lambda_body = flatten(instruction_list_list)
+ assert lambda_body[-1].instruction == 'drop'
+ lambda_body = argument_bindings + lambda_body[:-1] + (CIRInstruction(instruction='return', argument=None),)
+
+ referenced_entry_list_list.append(
+ (CIRLabel(label=label),) + lambda_body,
+ )
+
+ instruction_list = (
+ CIRInstruction(instruction='close', argument=label),
+ )
+
+ return flatten(referenced_entry_list_list), instruction_list
+
+def generate_list_construct_expression(counters, expression):
+ referenced_entry_list = ()
+ instruction_list = (CIRInstruction(
+ instruction='list',
+ argument=2,
+ ),)
+ return referenced_entry_list, instruction_list
+
+def generate_string_literal_expression(counters, expression):
+ referenced_entry_list = ()
+ instruction_list = (CIRInstruction(
+ instruction='push_string',
argument=generate_string_literal(expression.string),
),)
-def generate_symbol_expression(expression):
- return (CIRInstruction(
+ return referenced_entry_list, instruction_list
+
+def generate_structure_literal_expression(counters, expression):
+ referenced_entry_list = ()
+ instruction_list = (CIRInstruction(
+ instruction='structure',
+ argument=expression.field_count,
+ ),)
+
+ return referenced_entry_list, instruction_list
+
+def generate_symbol_expression(counters, expression):
+ referenced_entry_list = ()
+ instruction_list = (CIRInstruction(
instruction='push',
argument=generate_symbol_literal(expression.symbol),
),)
-def generate_variable_expression(expression):
- return (CIRInstruction(
+ return referenced_entry_list, instruction_list
+
+def generate_symbol_literal_expression(counters, expression):
+ referenced_entry_list = ()
+ instruction_list = (CIRInstruction(
+ instruction='push_symbol',
+ argument=generate_symbol_literal(expression.symbol),
+ ),)
+
+ return referenced_entry_list, instruction_list
+
+def generate_variable_expression(counters, expression):
+ referenced_entry_list = ()
+ instruction_list = (CIRInstruction(
instruction='push',
argument=generate_symbol_literal(expression.variable),
),)
-def generate_expression(expression):
+ return referenced_entry_list, instruction_list
+
+def generate_expression(counters, expression):
return {
conversion.CPSFunctionCallExpression: generate_function_call_expression,
+ conversion.CPSIfElseExpression: generate_if_else_expression,
conversion.CPSIntegerLiteralExpression: generate_integer_literal_expression,
+ conversion.CPSLambdaExpression: generate_lambda_expression,
+ conversion.CPSListConstructExpression: generate_list_construct_expression,
conversion.CPSStringLiteralExpression: generate_string_literal_expression,
+ conversion.CPSStructureLiteralExpression: generate_structure_literal_expression,
conversion.CPSSymbolExpression: generate_symbol_expression,
+ conversion.CPSSymbolLiteralExpression: generate_symbol_literal_expression,
conversion.CPSVariableExpression: generate_variable_expression,
- }[type(expression)](expression)
+ }[type(expression)](counters, expression)
def generate_expression_statement(counters, statement):
- return (
- (),
- generate_expression(statement.expression) + (
- CIRInstruction(
- instruction='drop',
- argument=None,
- ),
+ referenced_entry_list, instruction_list = generate_expression(
+ counters,
+ statement.expression,
+ )
+
+ instruction_list += (
+ CIRInstruction(
+ instruction='drop',
+ argument=None,
),
)
-def generate_if_else_statement(counters, statement):
+ return referenced_entry_list, instruction_list
+
+def generate_if_else_expression(counters, statement):
if_counter = counters['if']
counters['if'] += 1
referenced_entry_list_list = []
+ condition_referenced_entry_list, condition_instruction_list = generate_expression(
+ counters,
+ statement.condition_expression,
+ )
+
if_instruction_list_list = []
for if_statement in statement.if_statement_list:
referenced_entry_list, instruction_list = generate_statement(counters, if_statement)
referenced_entry_list_list.append(referenced_entry_list)
if_instruction_list_list.append(instruction_list)
+ if_instruction_list = flatten(if_instruction_list_list)
+ assert if_instruction_list[-1].instruction == 'drop'
+ if_instruction_list = if_instruction_list[:-1]
+
else_instruction_list_list = []
for else_statement in statement.else_statement_list:
referenced_entry_list_list.append(referenced_entry_list)
else_instruction_list_list.append(instruction_list)
+ else_instruction_list = flatten(else_instruction_list_list)
+ assert else_instruction_list[-1].instruction == 'drop'
+ else_instruction_list = else_instruction_list[:-1]
+
if_label = '__if${}__'.format(if_counter)
else_label = '__else${}__'.format(if_counter)
endif_label = '__endif${}__'.format(if_counter)
- return (
- referenced_entry_list_list,
- generate_expression(statement.condition_expression) + (
- CIRInstruction(
- instruction='jump_if_false',
- argument=else_label,
- ),
- CIRLabel(label=if_label),
- ) + flatten(if_instruction_list_list) + (
- CIRInstruction(
- instruction='jump',
- argument=endif_label,
- ),
- CIRLabel(label=else_label),
- ) + flatten(else_instruction_list_list) + (
- CIRLabel(label=endif_label),
+ instruction_list = condition_instruction_list + (
+ CIRInstruction(
+ instruction='jump_if_false',
+ argument=else_label,
+ ),
+ CIRInstruction(
+ instruction='jump',
+ argument=if_label,
),
+ CIRLabel(label=if_label),
+ ) + if_instruction_list + (
+ CIRInstruction(
+ instruction='jump',
+ argument=endif_label,
+ ),
+ CIRLabel(label=else_label),
+ ) + else_instruction_list + (
+ CIRLabel(label=endif_label),
)
-def generate_assignment_statement(counters, statement):
return (
- (),
- generate_expression(statement.expression) + (
- CIRInstruction(
- instruction='pop',
- argument=generate_symbol_literal(statement.target),
- ),
+ condition_referenced_entry_list + flatten(referenced_entry_list_list),
+ instruction_list,
+ )
+
+def generate_assignment_statement(counters, statement):
+ referenced_entry_list, instruction_list = generate_expression(
+ counters,
+ statement.expression,
+ )
+
+ instruction_list += (
+ CIRInstruction(
+ instruction='pop',
+ argument=generate_symbol_literal(statement.target),
),
)
+ return referenced_entry_list, instruction_list
+
def generate_push_statement(counters, statement):
- return (
- (),
- generate_expression(statement.expression),
- )
+ return generate_expression(counters, statement.expression)
def generate_variable_initialization_statement(counters, statement):
- return (
- (),
- generate_expression(statement.expression) + (
- CIRInstruction(
- instruction='pop',
- argument=generate_symbol_literal(statement.variable),
- ),
- ),
+ referenced_entry_list, instruction_list = generate_expression(
+ counters,
+ statement.expression,
)
-def generate_variable_reassignment_statement(counter, statement):
- return (
- (),
- generate_expression(statement.expression) + (
- CIRInstruction(
- instruction='pop',
- argument=generate_symbol_literal(statement.variable),
- ),
+ instruction_list += (
+ CIRInstruction(
+ instruction='pop',
+ argument=generate_symbol_literal(statement.variable),
),
)
+ return referenced_entry_list, instruction_list
+
def generate_statement(counters, statement):
return {
conversion.CPSAssignmentStatement: generate_assignment_statement,
conversion.CPSExpressionStatement: generate_expression_statement,
- conversion.CPSIfElseStatement: generate_if_else_statement,
conversion.CPSPushStatement: generate_push_statement,
conversion.CPSVariableInitializationStatement: generate_variable_initialization_statement,
- conversion.CPSVariableReassignmentStatement: generate_variable_reassignment_statement,
}[type(statement)](counters, statement)
def generate(converted):
instruction_list_list.append(instruction_list)
return CIRProgram(
- entry_list=(
+ entry_list=flatten(referenced_entry_list_list) + (
CIRLabel(label='__main__'),
- ) + tuple(
- referenced_entry
- for referenced_entry_list in referenced_entry_list_list
- for referenced_entry in referenced_entry_list
- ) + tuple(
- instruction
- for instruction_list in instruction_list_list
- for instruction in instruction_list
- ),
+ ) + flatten(instruction_list_list) + (
+ CIRInstruction(instruction='end', argument=None),
+ )
)
+NO_ARGUMENT_INSTRUCTIONS = set([
+ 'drop',
+ 'return',
+])
+
+def format_argument(arg):
+ if arg is None:
+ return 'nil'
+ return arg
+
def output(program):
lines = []
for entry in program.entry_list:
if isinstance(entry, CIRInstruction):
- lines.append(' {} {}'.format(entry.instruction, entry.argument))
+ if entry.instruction in NO_ARGUMENT_INSTRUCTIONS and entry.argument is None:
+ lines.append(' {}'.format(entry.instruction))
+ else:
+ lines.append(' {} {}'.format(entry.instruction, format_argument(entry.argument)))
if isinstance(entry, CIRLabel):
lines.append('\n{}:'.format(entry.label))
projects / fur / blobdiff