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First run at defer working - won't properly do every scope out of a loop yet, likely other problems

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This commit is contained in:
Nathan Braswell
2016-01-25 13:48:27 -05:00
parent 135305fb76
commit 9973bc3bd3
2 changed files with 89 additions and 41 deletions
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119
stdlib/c_generator.krak
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@@ -1,6 +1,7 @@
import io:*
import mem:*
import map:*
import stack:*
import string:*
import util:*
import tree:*
@@ -54,7 +55,10 @@ obj c_generator (Object) {
function_prototypes += type_to_c(backing.type->return_type) + " " + decorated_name + "(" + parameter_types + ");\n"
// add parameters to destructor thingy (for returns)? Or should that be a different pass?
function_definitions += type_to_c(backing.type->return_type) + " " + decorated_name + "(" + parameters + ") {\n" + generate_statement(backing.body_statement, enclosing_object)
// stack-stack thing // this could be a stack of strings too, maybe
// start out with one stack on the stack
var defer_stack = stack<stack<*ast_node>>(stack<*ast_node>())
function_definitions += type_to_c(backing.type->return_type) + " " + decorated_name + "(" + parameters + ") {\n" + generate_statement(backing.body_statement, enclosing_object, &defer_stack)
// emit parameter destructors?
function_definitions += "}\n"
}
@@ -72,7 +76,7 @@ obj c_generator (Object) {
top_level_c_passthrough += generate_simple_passthrough(backing.statement->statement.child)
}
ast_node::simple_passthrough(backing) top_level_c_passthrough += generate_simple_passthrough(child)
ast_node::declaration_statement(backing) variable_declarations += generate_declaration_statement(child, null<ast_node>()) + ";\n"
ast_node::declaration_statement(backing) variable_declarations += generate_declaration_statement(child, null<ast_node>(), null<stack<stack<*ast_node>>>()) + ";\n"
ast_node::function(backing) {
// make sure not a template
// or a passthrough
@@ -88,7 +92,7 @@ obj c_generator (Object) {
type_poset.get_sorted().for_each(fun(vert: *ast_node) {
plain_typedefs += string("typedef struct ") + vert->type_def.name + "_dummy " + vert->type_def.name + ";\n"
structs += string("struct ") + vert->type_def.name + "_dummy {\n"
vert->type_def.variables.for_each(fun(variable_declaration: *ast_node) structs += generate_declaration_statement(variable_declaration, null<ast_node>()) + ";\n";)
vert->type_def.variables.for_each(fun(variable_declaration: *ast_node) structs += generate_declaration_statement(variable_declaration, null<ast_node>(), null<stack<stack<*ast_node>>>()) + ";\n";)
structs += "};\n"
// generate the methods
vert->type_def.methods.for_each(fun(method: *ast_node) generate_function_definition(method, vert);)
@@ -98,54 +102,89 @@ obj c_generator (Object) {
}
fun generate_if_comp(node: *ast_node): string {
if (node->if_comp.wanted_generator == "__C__")
return generate(node->if_comp.statement, null<ast_node>())
return generate(node->if_comp.statement, null<ast_node>(), null<stack<stack<*ast_node>>>())
return string("")
}
fun generate_simple_passthrough(node: *ast_node): string {
// deal with all the passthrough params
return node->simple_passthrough.passthrough_str
}
fun generate_statement(node: *ast_node, enclosing_object: *ast_node): string return generate(node->statement.child, enclosing_object) + ";\n";
fun generate_declaration_statement(node: *ast_node, enclosing_object: *ast_node): string {
fun generate_statement(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string return generate(node->statement.child, enclosing_object, defer_stack) + ";\n";
fun generate_declaration_statement(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
// add destruct to defer_stac
var identifier = node->declaration_statement.identifier
var to_ret = type_to_c(identifier->identifier.type) + " " + identifier->identifier.name
if (node->declaration_statement.expression) to_ret += string(" = ") + generate(node->declaration_statement.expression, enclosing_object)
if (node->declaration_statement.expression) to_ret += string(" = ") + generate(node->declaration_statement.expression, enclosing_object, null<stack<stack<*ast_node>>>())
return to_ret
}
fun generate_assignment_statement(node: *ast_node, enclosing_object: *ast_node): string {
return generate(node->assignment_statement.to, null<ast_node>()) + " = " + generate(node->assignment_statement.from, enclosing_object)
return generate(node->assignment_statement.to, null<ast_node>(), null<stack<stack<*ast_node>>>()) + " = " + generate(node->assignment_statement.from, enclosing_object, null<stack<stack<*ast_node>>>())
}
fun generate_if_statement(node: *ast_node, enclosing_object: *ast_node): string {
var if_str = string("if (") + generate(node->if_statement.condition, enclosing_object) + ") {\n" + generate(node->if_statement.then_part, enclosing_object) + "}"
fun generate_if_statement(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
var if_str = string("if (") + generate(node->if_statement.condition, enclosing_object, null<stack<stack<*ast_node>>>()) + ") {\n" + generate(node->if_statement.then_part, enclosing_object, defer_stack) + "}"
if (node->if_statement.else_part)
if_str += string(" else {\n") + generate(node->if_statement.else_part, enclosing_object) + "}"
if_str += string(" else {\n") + generate(node->if_statement.else_part, enclosing_object, defer_stack) + "}"
return if_str + "\n"
}
fun generate_while_loop(node: *ast_node, enclosing_object: *ast_node): string {
return string("while (") + generate(node->while_loop.condition, enclosing_object) + ") {\n" + generate(node->while_loop.statement, enclosing_object) + "}\n"
fun generate_while_loop(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
// stick another stack on
defer_stack->push(stack<*ast_node>())
var to_ret = string("while (") + generate(node->while_loop.condition, enclosing_object, null<stack<stack<*ast_node>>>()) + ") {\n" + generate(node->while_loop.statement, enclosing_object, defer_stack)
to_ret += generate_from_defer_stack(defer_stack, 1, enclosing_object)
defer_stack->pop()
to_ret += "}\n"
return to_ret
}
fun generate_for_loop(node: *ast_node, enclosing_object: *ast_node): string {
fun generate_for_loop(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
// stick another stack on
defer_stack->push(stack<*ast_node>())
// gotta take off last semicolon
return string("for (") + generate(node->for_loop.init, enclosing_object) + " " + generate(node->for_loop.condition, enclosing_object) + "; " +
generate(node->for_loop.update, enclosing_object).slice(0,-3) + ") {\n" + generate(node->for_loop.body, enclosing_object) + "}\n"
var to_ret = string("for (") + generate(node->for_loop.init, enclosing_object, null<stack<stack<*ast_node>>>()) + " " + generate(node->for_loop.condition, enclosing_object, null<stack<stack<*ast_node>>>()) + "; " +
generate(node->for_loop.update, enclosing_object, null<stack<stack<*ast_node>>>()).slice(0,-3) + ") {\n" + generate(node->for_loop.body, enclosing_object, defer_stack)
to_ret += generate_from_defer_stack(defer_stack, 1, enclosing_object)
defer_stack->pop()
to_ret += "}\n"
return to_ret
}
fun generate_identifier(node: *ast_node, enclosing_object: *ast_node): string {
if (enclosing_object && get_ast_scope(enclosing_object)->contains_key(node->identifier.name))
return string("(this->") + node->identifier.name + ")"
return node->identifier.name
}
fun generate_return_statement(node: *ast_node, enclosing_object: *ast_node): string return string("return ") + generate(node->return_statement.return_value, enclosing_object);
fun generate_branching_statement(node: *ast_node, enclosing_object: *ast_node): string {
fun generate_return_statement(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
// generate all in stac
var to_ret = generate_from_defer_stack(defer_stack, -1, enclosing_object)
to_ret += string("return ") + generate(node->return_statement.return_value, enclosing_object, null<stack<stack<*ast_node>>>())
return to_ret
}
fun generate_branching_statement(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
// should be up to loop
var to_ret = generate_from_defer_stack(defer_stack, 1, enclosing_object)
match(node->branching_statement.b_type) {
branching_type::break_stmt() return string("break")
branching_type::continue_stmt() return string("continue")
branching_type::break_stmt() return to_ret + string("break")
branching_type::continue_stmt() return to_ret + string("continue")
}
}
fun generate_defer_statement(node: *ast_node, enclosing_object: *ast_node): string return string("/*defer ") + generate(node->defer_statement.statement, enclosing_object) + "*/";
fun generate_from_defer_stack(defer_stack: *stack<stack<*ast_node>>, num: int, enclosing_object: *ast_node): string {
var to_ret = string()
if (num == -1)
num = defer_stack->size()
for (var i = 0; i < num; i++;)
defer_stack->from_top(i).for_each(fun(node: *ast_node) to_ret += generate(node, enclosing_object, null<stack<stack<*ast_node>>>());)
return to_ret
}
fun generate_defer_statement(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
defer_stack->top().push(node->defer_statement.statement)
return string("/*defer*/")
}
fun generate_value(node: *ast_node): string return node->value.string_value;
fun generate_code_block(node: *ast_node, enclosing_object: *ast_node): string {
fun generate_code_block(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
var to_ret = string("{\n")
node->code_block.children.for_each(fun(child: *ast_node) to_ret += generate(child, enclosing_object);)
// stick another stack on
defer_stack->push(stack<*ast_node>())
node->code_block.children.for_each(fun(child: *ast_node) to_ret += generate(child, enclosing_object, defer_stack);)
to_ret += generate_from_defer_stack(defer_stack, 1, enclosing_object)
defer_stack->pop()
return to_ret + "}"
}
// this generates the function as a value, not the actual function
@@ -167,13 +206,13 @@ obj c_generator (Object) {
is_type_def(get_ast_scope(node->function_call.func->function_call.parameters[1])->get(string("~enclosing_scope"))[0])
if (dot_style_method_call) {
func_name = generate(node->function_call.func->function_call.parameters[1], enclosing_object)
func_name = generate(node->function_call.func->function_call.parameters[1], enclosing_object, null<stack<stack<*ast_node>>>())
// don't add & if it was ->
if (node->function_call.func->function_call.func->function.name == ".")
call_string += string("&")
call_string += generate(node->function_call.func->function_call.parameters[0], enclosing_object)
call_string += generate(node->function_call.func->function_call.parameters[0], enclosing_object, null<stack<stack<*ast_node>>>())
} else { // regular style function name
func_name = generate(node->function_call.func, enclosing_object)
func_name = generate(node->function_call.func, enclosing_object, null<stack<stack<*ast_node>>>())
}
// handle method call from inside method of same object
if (!dot_style_method_call && enclosing_object && get_ast_scope(enclosing_object)->contains_key(func_name))
@@ -185,41 +224,41 @@ obj c_generator (Object) {
|| func_name == "&&" || func_name == "<" || func_name == ">" || func_name == "<=" || func_name == ">="
|| func_name == "==" || func_name == "%"
)
return string("(") + generate(parameters[0], enclosing_object) + func_name + generate(parameters[1], enclosing_object) + string(")")
return string("(") + generate(parameters[0], enclosing_object, null<stack<stack<*ast_node>>>()) + func_name + generate(parameters[1], enclosing_object, null<stack<stack<*ast_node>>>()) + string(")")
// don't propegate enclosing function down right of access
if (func_name == "." || func_name == "->")
return string("(") + generate(parameters[0], enclosing_object) + func_name + generate(parameters[1], null<ast_node>()) + string(")")
return string("(") + generate(parameters[0], enclosing_object, null<stack<stack<*ast_node>>>()) + func_name + generate(parameters[1], null<ast_node>(), null<stack<stack<*ast_node>>>()) + string(")")
// the post ones need to be post-ed specifically, and take the p off
if (func_name == "++p" || func_name == "--p")
return string("(") + generate(parameters[0], enclosing_object) + ")" + func_name.slice(0,-2)
return string("(") + generate(parameters[0], enclosing_object, null<stack<stack<*ast_node>>>()) + ")" + func_name.slice(0,-2)
// regular parameter generation
parameters.for_each(fun(param: *ast_node) {
if (call_string != "")
call_string += ", "
call_string += generate(param, enclosing_object)
call_string += generate(param, enclosing_object, null<stack<stack<*ast_node>>>())
})
return func_name + "(" + call_string + ")"
}
// for now, anyway
fun generate(node: *ast_node, enclosing_object: *ast_node): string {
fun generate(node: *ast_node, enclosing_object: *ast_node, defer_stack: *stack<stack<*ast_node>>): string {
if (!node) return string("/*NULL*/")
match (*node) {
ast_node::if_comp(backing) return generate_if_comp(node)
ast_node::simple_passthrough(backing) return generate_simple_passthrough(node)
ast_node::statement(backing) return generate_statement(node, enclosing_object)
ast_node::declaration_statement(backing) return generate_declaration_statement(node, enclosing_object)
ast_node::statement(backing) return generate_statement(node, enclosing_object, defer_stack)
ast_node::declaration_statement(backing) return generate_declaration_statement(node, enclosing_object, defer_stack)
ast_node::assignment_statement(backing) return generate_assignment_statement(node, enclosing_object)
ast_node::if_statement(backing) return generate_if_statement(node, enclosing_object)
ast_node::while_loop(backing) return generate_while_loop(node, enclosing_object)
ast_node::for_loop(backing) return generate_for_loop(node, enclosing_object)
ast_node::if_statement(backing) return generate_if_statement(node, enclosing_object, defer_stack)
ast_node::while_loop(backing) return generate_while_loop(node, enclosing_object, defer_stack)
ast_node::for_loop(backing) return generate_for_loop(node, enclosing_object, defer_stack)
ast_node::function(backing) return generate_function(node)
ast_node::function_call(backing) return generate_function_call(node, enclosing_object)
ast_node::code_block(backing) return generate_code_block(node, enclosing_object)
ast_node::return_statement(backing) return generate_return_statement(node, enclosing_object)
ast_node::branching_statement(backing) return generate_branching_statement(node, enclosing_object)
ast_node::defer_statement(backing) return generate_defer_statement(node, enclosing_object)
ast_node::code_block(backing) return generate_code_block(node, enclosing_object, defer_stack)
ast_node::return_statement(backing) return generate_return_statement(node, enclosing_object, defer_stack)
ast_node::branching_statement(backing) return generate_branching_statement(node, enclosing_object, defer_stack)
ast_node::defer_statement(backing) return generate_defer_statement(node, enclosing_object, defer_stack)
ast_node::value(backing) return generate_value(node)
ast_node::identifier(backing) return generate_identifier(node, enclosing_object)
}