def method_invocation(element):
if element[0].tag == "name":
name = name_to_str(element.find("name"))
to_file(element)
declaration_site = element.env.get_declaration_site_for_method_name(
name,
argument_list(element))
element.attrib["type"] = element.env.get_type_for_declaration_site(
declaration_site)
element.declaration = declaration_site
elif element[0].tag == "primary":
primary_type = element[0].attrib["type"]
error_if(is_primitive(primary_type),
"Cannot invoke method on primitive " + primary_type)
declaration_site = element.env.get_declaration_site_for_class_name(
primary_type)
identifier = element.find("tok_identifier").text
method_declaration = \
declaration_site.env.get_declaration_site_for_method_name(
identifier,
argument_list(element))
element.attrib["type"] = \
method_declaration.env.get_type_for_declaration_site(
method_declaration)
element.declaration = method_declaration
else:
assert False
def check_and_generate(files):
init_globals() # reset global state
try:
out = open("output/out.s", "w")
trees = typechecker.check_files(files)
initializer_list = []
mega_vtable_offset = 1
type_tag = 0
string_literal_index = 0
for tree in trees:
clazz = find_type_decl(tree)
clazz.type_tag = type_tag
method_list.class_list += [clazz]
type_tag += 1
methods = (
tree.findall(".//method")
+ tree.findall(".//constructor_declaration")
+ tree.findall(".//abstract_method")
)
for method in methods:
method.mega_vtable_offset = mega_vtable_offset
mega_vtable_offset += 1
method_list.method_list += [method]
if "static" in modifiers(method):
slot = -2
else:
slot = -3
for param in method.findall(".//param"):
param.slot = slot
slot -= 1
counters.mega_vtable_members = mega_vtable_offset
for string_literal in tree.findall(".//string_literal"):
string_literal.index = string_literal_index
string_literal_index += 1
out.write(instanceof_table(trees))
for tree in trees:
CurrentFile.name = tree.filename
CurrentFile.mangled_name = CurrentFile.name.replace(".", "_").replace("$", "_").replace("/", "_")
CurrentFile.static_slot = 0
for this in tree.findall(".//tok_this"):
this.slot = -2
generate(tree)
to_file(tree, tree.filename + ".xml")
out.write("section .data\n")
for clazz in tree.findall(".//class"):
out.write(mega_vtable_for_class(clazz))
out.write("section .text\n")
initializer_name = "static_init_" + CurrentFile.mangled_name
out.write(
"""
; global {initializer_name}
{initializer_name}:
push ebp
mov ebp, esp
sub esp, {frame_size}
""".format(
initializer_name=initializer_name, frame_size=CurrentFile.static_slot * 4
)
)
initializer_list.append(initializer_name)
for field in tree.findall(".//field"):
if "static" in modifiers(field):
mangled_name = mangle_field_name(field)
out.write(
"""
; initializing {mangled_name}
{field_assembly}
mov eax, {mangled_name}
mov ebx, {assigned_value}
mov DWORD [eax], ebx
""".format(
mangled_name=mangled_name,
field_assembly=field.assembly,
assigned_value=stack_slot_to_operand(field.slot),
)
)
out.write(
"""
leave
ret
; done global static initialization
"""
)
for constructor in tree.findall(".//constructor_declaration"):
out.write(constructor.assembly + "\n")
for method in tree.findall(".//method"):
if method.find("block") is not None:
out.write(method.assembly + "\n")
out.write("\nsection .data\n")
for string_literal in tree.findall(".//string_literal"):
string_value = string_literal.get("value")
expanded_value = expand_string_literal(string_value)
out.write("\n; string literal " + string_value + "\n")
out.write("__string_literal_" + str(string_literal.index) + ":\n")
out.write("dd _vtable_java_lang_$Array_ ; vtable pointer\n")
out.write("dd -3 ; type tag for char\n")
out.write("dd " + str(len(expanded_value)) + " ; string length\n")
for character in expanded_value:
out.write("dd " + str(hex(ord(character))) + "\n")
out.write("")
out.write("\nsection .bss\n")
for field in tree.findall(".//field"):
if "static" in modifiers(field):
mangled_name = mangle_field_name(field)
out.write("""{mangled_name} resb 4""".format(mangled_name=mangled_name) + "\n")
out.write("section .text\n")
out.write("; prelude\n")
out.write("extern __malloc\n")
out.write("extern __debexit\n")
out.write("extern __exception\n")
out.write("extern NATIVEjava.io.OutputStream.nativeWrite\n")
out.write("global _start\n")
out.write("_start:\n")
out.write("call install_segv_handler\n")
for initializer in initializer_list:
out.write("call " + initializer + "\n")
class_name = mangle_class_name(find_type_decl(trees[1]).get("canonical_name"))
out.write("call " + class_name + "test_\n")
out.write("mov ebx, eax\n")
out.write("mov eax, 1\n")
out.write("int 0x80 ; invoke exit(1)\n")
out.write("; end prelude\n")
out.write(
"""
%define __NR_signal 48
%define SIGSEGV 11
global install_segv_handler
install_segv_handler:
mov eax, __NR_signal
mov ebx, SIGSEGV
mov ecx, __exception
int 0x80
ret
"""
)
return 0
except JoosSyntaxException, e:
if Testing.testing:
return 42
else:
out.write("\n" + e.msg + "\n")
raise