godot/doc/tools/make_rst.py

1686 lines
63 KiB
Python
Executable File

#!/usr/bin/env python3
# This script makes RST files from the XML class reference for use with the online docs.
import argparse
import os
import platform
import re
import sys
import xml.etree.ElementTree as ET
from collections import OrderedDict
from typing import List, Dict, TextIO, Tuple, Optional, Any, Union
# Import hardcoded version information from version.py
root_directory = os.path.join(os.path.dirname(os.path.abspath(__file__)), "../../")
sys.path.append(root_directory) # Include the root directory
import version
# $DOCS_URL/path/to/page.html(#fragment-tag)
GODOT_DOCS_PATTERN = re.compile(r"^\$DOCS_URL/(.*)\.html(#.*)?$")
# Based on reStructedText inline markup recognition rules
# https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html#inline-markup-recognition-rules
MARKUP_ALLOWED_PRECEDENT = " -:/'\"<([{"
MARKUP_ALLOWED_SUBSEQUENT = " -.,:;!?\\/'\")]}>"
# Used to translate section headings and other hardcoded strings when required with
# the --lang argument. The BASE_STRINGS list should be synced with what we actually
# write in this script (check `translate()` uses), and also hardcoded in
# `doc/translations/extract.py` to include them in the source POT file.
BASE_STRINGS = [
"Description",
"Tutorials",
"Properties",
"Constructors",
"Methods",
"Operators",
"Theme Properties",
"Signals",
"Enumerations",
"Constants",
"Annotations",
"Property Descriptions",
"Constructor Descriptions",
"Method Descriptions",
"Operator Descriptions",
"Theme Property Descriptions",
"Inherits:",
"Inherited By:",
"(overrides %s)",
"Default",
"Setter",
"value",
"Getter",
"This method should typically be overridden by the user to have any effect.",
"This method has no side effects. It doesn't modify any of the instance's member variables.",
"This method accepts any number of arguments after the ones described here.",
"This method is used to construct a type.",
"This method doesn't need an instance to be called, so it can be called directly using the class name.",
"This method describes a valid operator to use with this type as left-hand operand.",
]
strings_l10n: Dict[str, str] = {}
STYLES: Dict[str, str] = {}
class State:
def __init__(self) -> None:
self.num_errors = 0
self.classes: OrderedDict[str, ClassDef] = OrderedDict()
self.current_class: str = ""
def parse_class(self, class_root: ET.Element, filepath: str) -> None:
class_name = class_root.attrib["name"]
self.current_class = class_name
class_def = ClassDef(class_name)
self.classes[class_name] = class_def
class_def.filepath = filepath
inherits = class_root.get("inherits")
if inherits is not None:
class_def.inherits = inherits
brief_desc = class_root.find("brief_description")
if brief_desc is not None and brief_desc.text:
class_def.brief_description = brief_desc.text
desc = class_root.find("description")
if desc is not None and desc.text:
class_def.description = desc.text
properties = class_root.find("members")
if properties is not None:
for property in properties:
assert property.tag == "member"
property_name = property.attrib["name"]
if property_name in class_def.properties:
print_error('{}.xml: Duplicate property "{}".'.format(class_name, property_name), self)
continue
type_name = TypeName.from_element(property)
setter = property.get("setter") or None # Use or None so '' gets turned into None.
getter = property.get("getter") or None
default_value = property.get("default") or None
if default_value is not None:
default_value = "``{}``".format(default_value)
overrides = property.get("overrides") or None
property_def = PropertyDef(
property_name, type_name, setter, getter, property.text, default_value, overrides
)
class_def.properties[property_name] = property_def
constructors = class_root.find("constructors")
if constructors is not None:
for constructor in constructors:
assert constructor.tag == "constructor"
method_name = constructor.attrib["name"]
qualifiers = constructor.get("qualifiers")
return_element = constructor.find("return")
if return_element is not None:
return_type = TypeName.from_element(return_element)
else:
return_type = TypeName("void")
params = self.parse_arguments(constructor, "constructor")
desc_element = constructor.find("description")
method_desc = None
if desc_element is not None:
method_desc = desc_element.text
method_def = MethodDef(method_name, return_type, params, method_desc, qualifiers)
method_def.definition_name = "constructor"
if method_name not in class_def.constructors:
class_def.constructors[method_name] = []
class_def.constructors[method_name].append(method_def)
methods = class_root.find("methods")
if methods is not None:
for method in methods:
assert method.tag == "method"
method_name = method.attrib["name"]
qualifiers = method.get("qualifiers")
return_element = method.find("return")
if return_element is not None:
return_type = TypeName.from_element(return_element)
else:
return_type = TypeName("void")
params = self.parse_arguments(method, "method")
desc_element = method.find("description")
method_desc = None
if desc_element is not None:
method_desc = desc_element.text
method_def = MethodDef(method_name, return_type, params, method_desc, qualifiers)
if method_name not in class_def.methods:
class_def.methods[method_name] = []
class_def.methods[method_name].append(method_def)
operators = class_root.find("operators")
if operators is not None:
for operator in operators:
assert operator.tag == "operator"
method_name = operator.attrib["name"]
qualifiers = operator.get("qualifiers")
return_element = operator.find("return")
if return_element is not None:
return_type = TypeName.from_element(return_element)
else:
return_type = TypeName("void")
params = self.parse_arguments(operator, "operator")
desc_element = operator.find("description")
method_desc = None
if desc_element is not None:
method_desc = desc_element.text
method_def = MethodDef(method_name, return_type, params, method_desc, qualifiers)
method_def.definition_name = "operator"
if method_name not in class_def.operators:
class_def.operators[method_name] = []
class_def.operators[method_name].append(method_def)
constants = class_root.find("constants")
if constants is not None:
for constant in constants:
assert constant.tag == "constant"
constant_name = constant.attrib["name"]
value = constant.attrib["value"]
enum = constant.get("enum")
is_bitfield = constant.get("is_bitfield") == "true"
constant_def = ConstantDef(constant_name, value, constant.text, is_bitfield)
if enum is None:
if constant_name in class_def.constants:
print_error('{}.xml: Duplicate constant "{}".'.format(class_name, constant_name), self)
continue
class_def.constants[constant_name] = constant_def
else:
if enum in class_def.enums:
enum_def = class_def.enums[enum]
else:
enum_def = EnumDef(enum, is_bitfield)
class_def.enums[enum] = enum_def
enum_def.values[constant_name] = constant_def
annotations = class_root.find("annotations")
if annotations is not None:
for annotation in annotations:
assert annotation.tag == "annotation"
annotation_name = annotation.attrib["name"]
qualifiers = annotation.get("qualifiers")
params = self.parse_arguments(annotation, "annotation")
desc_element = annotation.find("description")
annotation_desc = None
if desc_element is not None:
annotation_desc = desc_element.text
annotation_def = AnnotationDef(annotation_name, params, annotation_desc, qualifiers)
if annotation_name not in class_def.annotations:
class_def.annotations[annotation_name] = []
class_def.annotations[annotation_name].append(annotation_def)
signals = class_root.find("signals")
if signals is not None:
for signal in signals:
assert signal.tag == "signal"
signal_name = signal.attrib["name"]
if signal_name in class_def.signals:
print_error('{}.xml: Duplicate signal "{}".'.format(class_name, signal_name), self)
continue
params = self.parse_arguments(signal, "signal")
desc_element = signal.find("description")
signal_desc = None
if desc_element is not None:
signal_desc = desc_element.text
signal_def = SignalDef(signal_name, params, signal_desc)
class_def.signals[signal_name] = signal_def
theme_items = class_root.find("theme_items")
if theme_items is not None:
for theme_item in theme_items:
assert theme_item.tag == "theme_item"
theme_item_name = theme_item.attrib["name"]
theme_item_data_name = theme_item.attrib["data_type"]
theme_item_id = "{}_{}".format(theme_item_data_name, theme_item_name)
if theme_item_id in class_def.theme_items:
print_error(
'{}.xml: Duplicate theme item "{}" of type "{}".'.format(
class_name, theme_item_name, theme_item_data_name
),
self,
)
continue
default_value = theme_item.get("default") or None
if default_value is not None:
default_value = "``{}``".format(default_value)
theme_item_def = ThemeItemDef(
theme_item_name,
TypeName.from_element(theme_item),
theme_item_data_name,
theme_item.text,
default_value,
)
class_def.theme_items[theme_item_name] = theme_item_def
tutorials = class_root.find("tutorials")
if tutorials is not None:
for link in tutorials:
assert link.tag == "link"
if link.text is not None:
class_def.tutorials.append((link.text.strip(), link.get("title", "")))
self.current_class = ""
def parse_arguments(self, root: ET.Element, context: str) -> List["ParameterDef"]:
param_elements = root.findall("argument")
params: Any = [None] * len(param_elements)
for param_index, param_element in enumerate(param_elements):
param_name = param_element.attrib["name"]
index = int(param_element.attrib["index"])
type_name = TypeName.from_element(param_element)
default = param_element.get("default")
if param_name.strip() == "" or param_name.startswith("_unnamed_arg"):
print_error(
'{}.xml: Empty argument name in {} "{}" at position {}.'.format(
self.current_class, context, root.attrib["name"], param_index
),
self,
)
params[index] = ParameterDef(param_name, type_name, default)
cast: List[ParameterDef] = params
return cast
def sort_classes(self) -> None:
self.classes = OrderedDict(sorted(self.classes.items(), key=lambda t: t[0]))
class TypeName:
def __init__(self, type_name: str, enum: Optional[str] = None) -> None:
self.type_name = type_name
self.enum = enum
def to_rst(self, state: State) -> str:
if self.enum is not None:
return make_enum(self.enum, state)
elif self.type_name == "void":
return "void"
else:
return make_type(self.type_name, state)
@classmethod
def from_element(cls, element: ET.Element) -> "TypeName":
return cls(element.attrib["type"], element.get("enum"))
class PropertyDef:
def __init__(
self,
name: str,
type_name: TypeName,
setter: Optional[str],
getter: Optional[str],
text: Optional[str],
default_value: Optional[str],
overrides: Optional[str],
) -> None:
self.definition_name = "property"
self.name = name
self.type_name = type_name
self.setter = setter
self.getter = getter
self.text = text
self.default_value = default_value
self.overrides = overrides
class ParameterDef:
def __init__(self, name: str, type_name: TypeName, default_value: Optional[str]) -> None:
self.definition_name = "parameter"
self.name = name
self.type_name = type_name
self.default_value = default_value
class SignalDef:
def __init__(self, name: str, parameters: List[ParameterDef], description: Optional[str]) -> None:
self.definition_name = "signal"
self.name = name
self.parameters = parameters
self.description = description
class AnnotationDef:
def __init__(
self,
name: str,
parameters: List[ParameterDef],
description: Optional[str],
qualifiers: Optional[str],
) -> None:
self.definition_name = "annotation"
self.name = name
self.parameters = parameters
self.description = description
self.qualifiers = qualifiers
class MethodDef:
def __init__(
self,
name: str,
return_type: TypeName,
parameters: List[ParameterDef],
description: Optional[str],
qualifiers: Optional[str],
) -> None:
self.definition_name = "method"
self.name = name
self.return_type = return_type
self.parameters = parameters
self.description = description
self.qualifiers = qualifiers
class ConstantDef:
def __init__(self, name: str, value: str, text: Optional[str], bitfield: bool) -> None:
self.definition_name = "constant"
self.name = name
self.value = value
self.text = text
self.is_bitfield = bitfield
class EnumDef:
def __init__(self, name: str, bitfield: bool) -> None:
self.definition_name = "enum"
self.name = name
self.values: OrderedDict[str, ConstantDef] = OrderedDict()
self.is_bitfield = bitfield
class ThemeItemDef:
def __init__(
self, name: str, type_name: TypeName, data_name: str, text: Optional[str], default_value: Optional[str]
) -> None:
self.definition_name = "theme item"
self.name = name
self.type_name = type_name
self.data_name = data_name
self.text = text
self.default_value = default_value
class ClassDef:
def __init__(self, name: str) -> None:
self.definition_name = "class"
self.name = name
self.constants: OrderedDict[str, ConstantDef] = OrderedDict()
self.enums: OrderedDict[str, EnumDef] = OrderedDict()
self.properties: OrderedDict[str, PropertyDef] = OrderedDict()
self.constructors: OrderedDict[str, List[MethodDef]] = OrderedDict()
self.methods: OrderedDict[str, List[MethodDef]] = OrderedDict()
self.operators: OrderedDict[str, List[MethodDef]] = OrderedDict()
self.signals: OrderedDict[str, SignalDef] = OrderedDict()
self.annotations: OrderedDict[str, List[AnnotationDef]] = OrderedDict()
self.theme_items: OrderedDict[str, ThemeItemDef] = OrderedDict()
self.inherits: Optional[str] = None
self.brief_description: Optional[str] = None
self.description: Optional[str] = None
self.tutorials: List[Tuple[str, str]] = []
# Used to match the class with XML source for output filtering purposes.
self.filepath: str = ""
def print_error(error: str, state: State) -> None:
print("{}{}ERROR:{} {}{}".format(STYLES["red"], STYLES["bold"], STYLES["regular"], error, STYLES["reset"]))
state.num_errors += 1
def main() -> None:
# Enable ANSI escape code support on Windows 10 and later (for colored console output).
# <https://bugs.python.org/issue29059>
if platform.system().lower() == "windows":
from ctypes import windll, c_int, byref # type: ignore
stdout_handle = windll.kernel32.GetStdHandle(c_int(-11))
mode = c_int(0)
windll.kernel32.GetConsoleMode(c_int(stdout_handle), byref(mode))
mode = c_int(mode.value | 4)
windll.kernel32.SetConsoleMode(c_int(stdout_handle), mode)
parser = argparse.ArgumentParser()
parser.add_argument("path", nargs="+", help="A path to an XML file or a directory containing XML files to parse.")
parser.add_argument("--filter", default="", help="The filepath pattern for XML files to filter.")
parser.add_argument("--lang", "-l", default="en", help="Language to use for section headings.")
parser.add_argument(
"--color",
action="store_true",
help="If passed, force colored output even if stdout is not a TTY (useful for continuous integration).",
)
group = parser.add_mutually_exclusive_group()
group.add_argument("--output", "-o", default=".", help="The directory to save output .rst files in.")
group.add_argument(
"--dry-run",
action="store_true",
help="If passed, no output will be generated and XML files are only checked for errors.",
)
args = parser.parse_args()
should_color = args.color or (hasattr(sys.stdout, "isatty") and sys.stdout.isatty())
STYLES["red"] = "\x1b[91m" if should_color else ""
STYLES["green"] = "\x1b[92m" if should_color else ""
STYLES["bold"] = "\x1b[1m" if should_color else ""
STYLES["regular"] = "\x1b[22m" if should_color else ""
STYLES["reset"] = "\x1b[0m" if should_color else ""
# Retrieve heading translations for the given language.
if not args.dry_run and args.lang != "en":
lang_file = os.path.join(
os.path.dirname(os.path.realpath(__file__)), "..", "translations", "{}.po".format(args.lang)
)
if os.path.exists(lang_file):
try:
import polib
except ImportError:
print("Base template strings localization requires `polib`.")
exit(1)
pofile = polib.pofile(lang_file)
for entry in pofile.translated_entries():
if entry.msgid in BASE_STRINGS:
strings_l10n[entry.msgid] = entry.msgstr
else:
print('No PO file at "{}" for language "{}".'.format(lang_file, args.lang))
print("Checking for errors in the XML class reference...")
file_list: List[str] = []
for path in args.path:
# Cut off trailing slashes so os.path.basename doesn't choke.
if path.endswith("/") or path.endswith("\\"):
path = path[:-1]
if os.path.basename(path) == "modules":
for subdir, dirs, _ in os.walk(path):
if "doc_classes" in dirs:
doc_dir = os.path.join(subdir, "doc_classes")
class_file_names = (f for f in os.listdir(doc_dir) if f.endswith(".xml"))
file_list += (os.path.join(doc_dir, f) for f in class_file_names)
elif os.path.isdir(path):
file_list += (os.path.join(path, f) for f in os.listdir(path) if f.endswith(".xml"))
elif os.path.isfile(path):
if not path.endswith(".xml"):
print('Got non-.xml file "{}" in input, skipping.'.format(path))
continue
file_list.append(path)
classes: Dict[str, Tuple[ET.Element, str]] = {}
state = State()
for cur_file in file_list:
try:
tree = ET.parse(cur_file)
except ET.ParseError as e:
print_error("{}: Parse error while reading the file: {}".format(cur_file, e), state)
continue
doc = tree.getroot()
if "version" not in doc.attrib:
print_error('{}: "version" attribute missing from "doc".'.format(cur_file), state)
continue
name = doc.attrib["name"]
if name in classes:
print_error('{}: Duplicate class "{}".'.format(cur_file, name), state)
continue
classes[name] = (doc, cur_file)
for name, data in classes.items():
try:
state.parse_class(data[0], data[1])
except Exception as e:
print_error("{}.xml: Exception while parsing class: {}".format(name, e), state)
state.sort_classes()
pattern = re.compile(args.filter)
# Create the output folder recursively if it doesn't already exist.
os.makedirs(args.output, exist_ok=True)
for class_name, class_def in state.classes.items():
if args.filter and not pattern.search(class_def.filepath):
continue
state.current_class = class_name
make_rst_class(class_def, state, args.dry_run, args.output)
if state.num_errors == 0:
print("{}No errors found in the class reference XML.{}".format(STYLES["green"], STYLES["reset"]))
if not args.dry_run:
print("Wrote reStructuredText files for each class to: %s" % args.output)
else:
if state.num_errors >= 2:
print(
"{}{} errors were found in the class reference XML. Please check the messages above.{}".format(
STYLES["red"], state.num_errors, STYLES["reset"]
)
)
else:
print(
"{}1 error was found in the class reference XML. Please check the messages above.{}".format(
STYLES["red"], STYLES["reset"]
)
)
exit(1)
def translate(string: str) -> str:
"""Translate a string based on translations sourced from `doc/translations/*.po`
for a language if defined via the --lang command line argument.
Returns the original string if no translation exists.
"""
return strings_l10n.get(string, string)
def make_rst_class(class_def: ClassDef, state: State, dry_run: bool, output_dir: str) -> None:
class_name = class_def.name
if dry_run:
f = open(os.devnull, "w", encoding="utf-8")
else:
f = open(os.path.join(output_dir, "class_" + class_name.lower() + ".rst"), "w", encoding="utf-8")
# Remove the "Edit on Github" button from the online docs page.
f.write(":github_url: hide\n\n")
# Warn contributors not to edit this file directly.
# Also provide links to the source files for reference.
git_branch = "master"
if hasattr(version, "docs") and version.docs != "latest":
git_branch = version.docs
source_xml_path = os.path.relpath(class_def.filepath, root_directory).replace("\\", "/")
source_github_url = "https://github.com/godotengine/godot/tree/{}/{}".format(git_branch, source_xml_path)
generator_github_url = "https://github.com/godotengine/godot/tree/{}/doc/tools/make_rst.py".format(git_branch)
f.write(".. DO NOT EDIT THIS FILE!!!\n")
f.write(".. Generated automatically from Godot engine sources.\n")
f.write(".. Generator: " + generator_github_url + ".\n")
f.write(".. XML source: " + source_github_url + ".\n\n")
# Document reference id and header.
f.write(".. _class_" + class_name + ":\n\n")
f.write(make_heading(class_name, "=", False))
# Inheritance tree
# Ascendants
if class_def.inherits:
inherits = class_def.inherits.strip()
f.write("**" + translate("Inherits:") + "** ")
first = True
while inherits in state.classes:
if not first:
f.write(" **<** ")
else:
first = False
f.write(make_type(inherits, state))
inode = state.classes[inherits].inherits
if inode:
inherits = inode.strip()
else:
break
f.write("\n\n")
# Descendants
inherited: List[str] = []
for c in state.classes.values():
if c.inherits and c.inherits.strip() == class_name:
inherited.append(c.name)
if len(inherited):
f.write("**" + translate("Inherited By:") + "** ")
for i, child in enumerate(inherited):
if i > 0:
f.write(", ")
f.write(make_type(child, state))
f.write("\n\n")
# Brief description
if class_def.brief_description is not None:
f.write(rstize_text(class_def.brief_description.strip(), class_def, state) + "\n\n")
# Class description
if class_def.description is not None and class_def.description.strip() != "":
f.write(make_heading("Description", "-"))
f.write(rstize_text(class_def.description.strip(), class_def, state) + "\n\n")
# Online tutorials
if len(class_def.tutorials) > 0:
f.write(make_heading("Tutorials", "-"))
for url, title in class_def.tutorials:
f.write("- " + make_link(url, title) + "\n\n")
# Properties overview
if len(class_def.properties) > 0:
f.write(make_heading("Properties", "-"))
ml: List[Tuple[Optional[str], ...]] = []
for property_def in class_def.properties.values():
type_rst = property_def.type_name.to_rst(state)
default = property_def.default_value
if default is not None and property_def.overrides:
ref = ":ref:`{1}<class_{1}_property_{0}>`".format(property_def.name, property_def.overrides)
# Not using translate() for now as it breaks table formatting.
ml.append((type_rst, property_def.name, default + " " + "(overrides %s)" % ref))
else:
ref = ":ref:`{0}<class_{1}_property_{0}>`".format(property_def.name, class_name)
ml.append((type_rst, ref, default))
format_table(f, ml, True)
# Constructors, Methods, Operators overview
if len(class_def.constructors) > 0:
f.write(make_heading("Constructors", "-"))
ml: List[Tuple[Optional[str], ...]] = []
for method_list in class_def.constructors.values():
for m in method_list:
ml.append(make_method_signature(class_def, m, "constructor", state))
format_table(f, ml)
if len(class_def.methods) > 0:
f.write(make_heading("Methods", "-"))
ml: List[Tuple[Optional[str], ...]] = []
for method_list in class_def.methods.values():
for m in method_list:
ml.append(make_method_signature(class_def, m, "method", state))
format_table(f, ml)
if len(class_def.operators) > 0:
f.write(make_heading("Operators", "-"))
ml: List[Tuple[Optional[str], ...]] = []
for method_list in class_def.operators.values():
for m in method_list:
ml.append(make_method_signature(class_def, m, "operator", state))
format_table(f, ml)
# Theme properties
if len(class_def.theme_items) > 0:
f.write(make_heading("Theme Properties", "-"))
pl: List[Tuple[Optional[str], ...]] = []
for theme_item_def in class_def.theme_items.values():
ref = ":ref:`{0}<class_{2}_theme_{1}_{0}>`".format(
theme_item_def.name, theme_item_def.data_name, class_name
)
pl.append((theme_item_def.type_name.to_rst(state), ref, theme_item_def.default_value))
format_table(f, pl, True)
# Signals
if len(class_def.signals) > 0:
f.write(make_heading("Signals", "-"))
index = 0
for signal in class_def.signals.values():
if index != 0:
f.write("----\n\n")
f.write(".. _class_{}_signal_{}:\n\n".format(class_name, signal.name))
_, signature = make_method_signature(class_def, signal, "", state)
f.write("- {}\n\n".format(signature))
if signal.description is not None and signal.description.strip() != "":
f.write(rstize_text(signal.description.strip(), signal, state) + "\n\n")
index += 1
# Enums
if len(class_def.enums) > 0:
f.write(make_heading("Enumerations", "-"))
index = 0
for e in class_def.enums.values():
if index != 0:
f.write("----\n\n")
f.write(".. _enum_{}_{}:\n\n".format(class_name, e.name))
# Sphinx seems to divide the bullet list into individual <ul> tags if we weave the labels into it.
# As such I'll put them all above the list. Won't be perfect but better than making the list visually broken.
# As to why I'm not modifying the reference parser to directly link to the _enum label:
# If somebody gets annoyed enough to fix it, all existing references will magically improve.
for value in e.values.values():
f.write(".. _class_{}_constant_{}:\n\n".format(class_name, value.name))
if e.is_bitfield:
f.write("flags **{}**:\n\n".format(e.name))
else:
f.write("enum **{}**:\n\n".format(e.name))
for value in e.values.values():
f.write("- **{}** = **{}**".format(value.name, value.value))
if value.text is not None and value.text.strip() != "":
# If value.text contains a bullet point list, each entry needs additional indentation
f.write(" --- " + indent_bullets(rstize_text(value.text.strip(), value, state)))
f.write("\n\n")
index += 1
# Constants
if len(class_def.constants) > 0:
f.write(make_heading("Constants", "-"))
# Sphinx seems to divide the bullet list into individual <ul> tags if we weave the labels into it.
# As such I'll put them all above the list. Won't be perfect but better than making the list visually broken.
for constant in class_def.constants.values():
f.write(".. _class_{}_constant_{}:\n\n".format(class_name, constant.name))
for constant in class_def.constants.values():
f.write("- **{}** = **{}**".format(constant.name, constant.value))
if constant.text is not None and constant.text.strip() != "":
f.write(" --- " + rstize_text(constant.text.strip(), constant, state))
f.write("\n\n")
# Annotations
if len(class_def.annotations) > 0:
f.write(make_heading("Annotations", "-"))
index = 0
for method_list in class_def.annotations.values():
for i, m in enumerate(method_list):
if index != 0:
f.write("----\n\n")
if i == 0:
f.write(".. _class_{}_annotation_{}:\n\n".format(class_name, m.name.strip("@")))
_, signature = make_method_signature(class_def, m, "", state)
f.write("- {}\n\n".format(signature))
if m.description is not None and m.description.strip() != "":
f.write(rstize_text(m.description.strip(), m, state) + "\n\n")
index += 1
# Property descriptions
if any(not p.overrides for p in class_def.properties.values()) > 0:
f.write(make_heading("Property Descriptions", "-"))
index = 0
for property_def in class_def.properties.values():
if property_def.overrides:
continue
if index != 0:
f.write("----\n\n")
f.write(".. _class_{}_property_{}:\n\n".format(class_name, property_def.name))
f.write("- {} **{}**\n\n".format(property_def.type_name.to_rst(state), property_def.name))
info: List[Tuple[Optional[str], ...]] = []
# Not using translate() for now as it breaks table formatting.
if property_def.default_value is not None:
info.append(("*" + "Default" + "*", property_def.default_value))
if property_def.setter is not None and not property_def.setter.startswith("_"):
info.append(("*" + "Setter" + "*", property_def.setter + "(" + "value" + ")"))
if property_def.getter is not None and not property_def.getter.startswith("_"):
info.append(("*" + "Getter" + "*", property_def.getter + "()"))
if len(info) > 0:
format_table(f, info)
if property_def.text is not None and property_def.text.strip() != "":
f.write(rstize_text(property_def.text.strip(), property_def, state) + "\n\n")
index += 1
# Constructor, Method, Operator descriptions
if len(class_def.constructors) > 0:
f.write(make_heading("Constructor Descriptions", "-"))
index = 0
for method_list in class_def.constructors.values():
for i, m in enumerate(method_list):
if index != 0:
f.write("----\n\n")
if i == 0:
f.write(".. _class_{}_constructor_{}:\n\n".format(class_name, m.name))
ret_type, signature = make_method_signature(class_def, m, "", state)
f.write("- {} {}\n\n".format(ret_type, signature))
if m.description is not None and m.description.strip() != "":
f.write(rstize_text(m.description.strip(), m, state) + "\n\n")
index += 1
if len(class_def.methods) > 0:
f.write(make_heading("Method Descriptions", "-"))
index = 0
for method_list in class_def.methods.values():
for i, m in enumerate(method_list):
if index != 0:
f.write("----\n\n")
if i == 0:
f.write(".. _class_{}_method_{}:\n\n".format(class_name, m.name))
ret_type, signature = make_method_signature(class_def, m, "", state)
f.write("- {} {}\n\n".format(ret_type, signature))
if m.description is not None and m.description.strip() != "":
f.write(rstize_text(m.description.strip(), m, state) + "\n\n")
index += 1
if len(class_def.operators) > 0:
f.write(make_heading("Operator Descriptions", "-"))
index = 0
for method_list in class_def.operators.values():
for i, m in enumerate(method_list):
if index != 0:
f.write("----\n\n")
if i == 0:
f.write(
".. _class_{}_operator_{}_{}:\n\n".format(
class_name, sanitize_operator_name(m.name, state), m.return_type.type_name
)
)
ret_type, signature = make_method_signature(class_def, m, "", state)
f.write("- {} {}\n\n".format(ret_type, signature))
if m.description is not None and m.description.strip() != "":
f.write(rstize_text(m.description.strip(), m, state) + "\n\n")
index += 1
# Theme property descriptions
if len(class_def.theme_items) > 0:
f.write(make_heading("Theme Property Descriptions", "-"))
index = 0
for theme_item_def in class_def.theme_items.values():
if index != 0:
f.write("----\n\n")
f.write(".. _class_{}_theme_{}_{}:\n\n".format(class_name, theme_item_def.data_name, theme_item_def.name))
f.write("- {} **{}**\n\n".format(theme_item_def.type_name.to_rst(state), theme_item_def.name))
info = []
if theme_item_def.default_value is not None:
# Not using translate() for now as it breaks table formatting.
info.append(("*" + "Default" + "*", theme_item_def.default_value))
if len(info) > 0:
format_table(f, info)
if theme_item_def.text is not None and theme_item_def.text.strip() != "":
f.write(rstize_text(theme_item_def.text.strip(), theme_item_def, state) + "\n\n")
index += 1
f.write(make_footer())
def escape_rst(text: str, until_pos: int = -1) -> str:
# Escape \ character, otherwise it ends up as an escape character in rst
pos = 0
while True:
pos = text.find("\\", pos, until_pos)
if pos == -1:
break
text = text[:pos] + "\\\\" + text[pos + 1 :]
pos += 2
# Escape * character to avoid interpreting it as emphasis
pos = 0
while True:
pos = text.find("*", pos, until_pos)
if pos == -1:
break
text = text[:pos] + "\*" + text[pos + 1 :]
pos += 2
# Escape _ character at the end of a word to avoid interpreting it as an inline hyperlink
pos = 0
while True:
pos = text.find("_", pos, until_pos)
if pos == -1:
break
if not text[pos + 1].isalnum(): # don't escape within a snake_case word
text = text[:pos] + "\_" + text[pos + 1 :]
pos += 2
else:
pos += 1
return text
def format_codeblock(code_type: str, post_text: str, indent_level: int, state: State) -> Union[Tuple[str, int], None]:
end_pos = post_text.find("[/" + code_type + "]")
if end_pos == -1:
print_error("{}.xml: [" + code_type + "] without a closing tag.".format(state.current_class), state)
return None
code_text = post_text[len("[" + code_type + "]") : end_pos]
post_text = post_text[end_pos:]
# Remove extraneous tabs
code_pos = 0
while True:
code_pos = code_text.find("\n", code_pos)
if code_pos == -1:
break
to_skip = 0
while code_pos + to_skip + 1 < len(code_text) and code_text[code_pos + to_skip + 1] == "\t":
to_skip += 1
if to_skip > indent_level:
print_error(
"{}.xml: Four spaces should be used for indentation within [{}].".format(
state.current_class, code_type
),
state,
)
if len(code_text[code_pos + to_skip + 1 :]) == 0:
code_text = code_text[:code_pos] + "\n"
code_pos += 1
else:
code_text = code_text[:code_pos] + "\n " + code_text[code_pos + to_skip + 1 :]
code_pos += 5 - to_skip
return ("\n[" + code_type + "]" + code_text + post_text, len("\n[" + code_type + "]" + code_text))
def rstize_text(
text: str,
context: Union[ClassDef, SignalDef, ConstantDef, AnnotationDef, PropertyDef, MethodDef, ThemeItemDef, None],
state: State,
) -> str:
# Linebreak + tabs in the XML should become two line breaks unless in a "codeblock"
pos = 0
while True:
pos = text.find("\n", pos)
if pos == -1:
break
pre_text = text[:pos]
indent_level = 0
while pos + 1 < len(text) and text[pos + 1] == "\t":
pos += 1
indent_level += 1
post_text = text[pos + 1 :]
# Handle codeblocks
if (
post_text.startswith("[codeblock]")
or post_text.startswith("[gdscript]")
or post_text.startswith("[csharp]")
):
block_type = post_text[1:].split("]")[0]
result = format_codeblock(block_type, post_text, indent_level, state)
if result is None:
return ""
text = pre_text + result[0]
pos += result[1] - indent_level
# Handle normal text
else:
text = pre_text + "\n\n" + post_text
pos += 2 - indent_level
next_brac_pos = text.find("[")
text = escape_rst(text, next_brac_pos)
# Handle [tags]
inside_code = False
pos = 0
tag_depth = 0
while True:
pos = text.find("[", pos)
if pos == -1:
break
endq_pos = text.find("]", pos + 1)
if endq_pos == -1:
break
pre_text = text[:pos]
post_text = text[endq_pos + 1 :]
tag_text = text[pos + 1 : endq_pos]
escape_pre = False
escape_post = False
if tag_text in state.classes:
if tag_text == state.current_class:
# We don't want references to the same class
tag_text = "``{}``".format(tag_text)
else:
tag_text = make_type(tag_text, state)
escape_pre = True
escape_post = True
else: # command
cmd = tag_text
space_pos = tag_text.find(" ")
if cmd == "/codeblock" or cmd == "/gdscript" or cmd == "/csharp":
tag_text = ""
tag_depth -= 1
inside_code = False
# Strip newline if the tag was alone on one
if pre_text[-1] == "\n":
pre_text = pre_text[:-1]
elif cmd == "/code":
tag_text = "``"
tag_depth -= 1
inside_code = False
escape_post = True
elif inside_code:
tag_text = "[" + tag_text + "]"
elif cmd.find("html") == 0:
param = tag_text[space_pos + 1 :]
tag_text = param
elif (
cmd.startswith("method")
or cmd.startswith("member")
or cmd.startswith("signal")
or cmd.startswith("constant")
or cmd.startswith("theme_item")
):
param = tag_text[space_pos + 1 :]
if param.find(".") != -1:
ss = param.split(".")
if len(ss) > 2:
print_error('{}.xml: Bad reference: "{}".'.format(state.current_class, param), state)
class_param, method_param = ss
else:
class_param = state.current_class
method_param = param
ref_type = ""
if class_param in state.classes:
class_def = state.classes[class_param]
if cmd.startswith("constructor"):
if method_param not in class_def.constructors:
print_error(
'{}.xml: Unresolved constructor "{}".'.format(state.current_class, param), state
)
ref_type = "_constructor"
elif cmd.startswith("method"):
if method_param not in class_def.methods:
print_error('{}.xml: Unresolved method "{}".'.format(state.current_class, param), state)
ref_type = "_method"
elif cmd.startswith("operator"):
if method_param not in class_def.operators:
print_error('{}.xml: Unresolved operator "{}".'.format(state.current_class, param), state)
ref_type = "_operator"
elif cmd.startswith("member"):
if method_param not in class_def.properties:
print_error('{}.xml: Unresolved member "{}".'.format(state.current_class, param), state)
ref_type = "_property"
elif cmd.startswith("theme_item"):
if method_param not in class_def.theme_items:
print_error('{}.xml: Unresolved theme item "{}".'.format(state.current_class, param), state)
ref_type = "_theme_{}".format(class_def.theme_items[method_param].data_name)
elif cmd.startswith("signal"):
if method_param not in class_def.signals:
print_error('{}.xml: Unresolved signal "{}".'.format(state.current_class, param), state)
ref_type = "_signal"
elif cmd.startswith("annotation"):
if method_param not in class_def.annotations:
print_error('{}.xml: Unresolved annotation "{}".'.format(state.current_class, param), state)
ref_type = "_annotation"
elif cmd.startswith("constant"):
found = False
# Search in the current class
search_class_defs = [class_def]
if param.find(".") == -1:
# Also search in @GlobalScope as a last resort if no class was specified
search_class_defs.append(state.classes["@GlobalScope"])
for search_class_def in search_class_defs:
if method_param in search_class_def.constants:
class_param = search_class_def.name
found = True
else:
for enum in search_class_def.enums.values():
if method_param in enum.values:
class_param = search_class_def.name
found = True
break
if not found:
print_error('{}.xml: Unresolved constant "{}".'.format(state.current_class, param), state)
ref_type = "_constant"
else:
print_error(
'{}.xml: Unresolved type reference "{}" in method reference "{}".'.format(
state.current_class, class_param, param
),
state,
)
repl_text = method_param
if class_param != state.current_class:
repl_text = "{}.{}".format(class_param, method_param)
tag_text = ":ref:`{}<class_{}{}_{}>`".format(repl_text, class_param, ref_type, method_param)
escape_pre = True
escape_post = True
elif cmd.startswith("param"):
param_name: str = ""
if space_pos >= 0:
param_name = tag_text[space_pos + 1 :].strip()
if param_name == "":
context_name: str = "unknown context"
if context is not None:
context_name = '{} "{}" description'.format(context.definition_name, context.name)
print_error(
"{}.xml: Empty argument reference in {}.".format(state.current_class, context_name),
state,
)
else:
valid_context = (
isinstance(context, MethodDef)
or isinstance(context, SignalDef)
or isinstance(context, AnnotationDef)
)
if not valid_context:
context_name: str = "unknown context"
if context is not None:
context_name = '{} "{}" description'.format(context.definition_name, context.name)
print_error(
'{}.xml: Argument reference "{}" used outside of method, signal, or annotation context in {}.'.format(
state.current_class, param_name, context_name
),
state,
)
else:
context_params: List[ParameterDef] = context.parameters
found = False
for param_def in context_params:
if param_def.name == param_name:
found = True
break
if not found:
print_error(
'{}.xml: Unresolved argument reference "{}" in {} "{}" description.'.format(
state.current_class, param_name, context.definition_name, context.name
),
state,
)
if param_name == "":
tag_text = ""
else:
tag_text = "``{}``".format(param_name)
elif cmd.find("image=") == 0:
tag_text = "" # '![](' + cmd[6:] + ')'
elif cmd.find("url=") == 0:
# URLs are handled in full here as we need to extract the optional link
# title to use `make_link`.
link_url = cmd[4:]
endurl_pos = text.find("[/url]", endq_pos + 1)
if endurl_pos == -1:
print_error(
"{}.xml: Tag depth mismatch for [url]: no closing [/url]".format(state.current_class), state
)
break
link_title = text[endq_pos + 1 : endurl_pos]
tag_text = make_link(link_url, link_title)
pre_text = text[:pos]
post_text = text[endurl_pos + 6 :]
if pre_text and pre_text[-1] not in MARKUP_ALLOWED_PRECEDENT:
pre_text += "\ "
if post_text and post_text[0] not in MARKUP_ALLOWED_SUBSEQUENT:
post_text = "\ " + post_text
text = pre_text + tag_text + post_text
pos = len(pre_text) + len(tag_text)
continue
elif cmd == "center":
tag_depth += 1
tag_text = ""
elif cmd == "/center":
tag_depth -= 1
tag_text = ""
elif cmd == "codeblock":
tag_depth += 1
tag_text = "\n::\n"
inside_code = True
elif cmd == "gdscript":
tag_depth += 1
tag_text = "\n .. code-tab:: gdscript\n"
inside_code = True
elif cmd == "csharp":
tag_depth += 1
tag_text = "\n .. code-tab:: csharp\n"
inside_code = True
elif cmd == "codeblocks":
tag_depth += 1
tag_text = "\n.. tabs::"
elif cmd == "/codeblocks":
tag_depth -= 1
tag_text = ""
elif cmd == "br":
# Make a new paragraph instead of a linebreak, rst is not so linebreak friendly
tag_text = "\n\n"
# Strip potential leading spaces
while post_text[0] == " ":
post_text = post_text[1:]
elif cmd == "i" or cmd == "/i":
if cmd == "/i":
tag_depth -= 1
escape_post = True
else:
tag_depth += 1
escape_pre = True
tag_text = "*"
elif cmd == "b" or cmd == "/b":
if cmd == "/b":
tag_depth -= 1
escape_post = True
else:
tag_depth += 1
escape_pre = True
tag_text = "**"
elif cmd == "u" or cmd == "/u":
if cmd == "/u":
tag_depth -= 1
escape_post = True
else:
tag_depth += 1
escape_pre = True
tag_text = ""
elif cmd == "code":
tag_text = "``"
tag_depth += 1
inside_code = True
escape_pre = True
elif cmd == "kbd":
tag_text = ":kbd:`"
tag_depth += 1
escape_pre = True
elif cmd == "/kbd":
tag_text = "`"
tag_depth -= 1
escape_post = True
elif cmd.startswith("enum "):
tag_text = make_enum(cmd[5:], state)
escape_pre = True
escape_post = True
else:
tag_text = make_type(tag_text, state)
escape_pre = True
escape_post = True
# Properly escape things like `[Node]s`
if escape_pre and pre_text and pre_text[-1] not in MARKUP_ALLOWED_PRECEDENT:
pre_text += "\ "
if escape_post and post_text and post_text[0] not in MARKUP_ALLOWED_SUBSEQUENT:
post_text = "\ " + post_text
next_brac_pos = post_text.find("[", 0)
iter_pos = 0
while not inside_code:
iter_pos = post_text.find("*", iter_pos, next_brac_pos)
if iter_pos == -1:
break
post_text = post_text[:iter_pos] + "\*" + post_text[iter_pos + 1 :]
iter_pos += 2
iter_pos = 0
while not inside_code:
iter_pos = post_text.find("_", iter_pos, next_brac_pos)
if iter_pos == -1:
break
if not post_text[iter_pos + 1].isalnum(): # don't escape within a snake_case word
post_text = post_text[:iter_pos] + "\_" + post_text[iter_pos + 1 :]
iter_pos += 2
else:
iter_pos += 1
text = pre_text + tag_text + post_text
pos = len(pre_text) + len(tag_text)
if tag_depth > 0:
print_error(
"{}.xml: Tag depth mismatch: too many (or too little) open/close tags.".format(state.current_class), state
)
return text
def format_table(f: TextIO, data: List[Tuple[Optional[str], ...]], remove_empty_columns: bool = False) -> None:
if len(data) == 0:
return
column_sizes = [0] * len(data[0])
for row in data:
for i, text in enumerate(row):
text_length = len(text or "")
if text_length > column_sizes[i]:
column_sizes[i] = text_length
sep = ""
for size in column_sizes:
if size == 0 and remove_empty_columns:
continue
sep += "+" + "-" * (size + 2)
sep += "+\n"
f.write(sep)
for row in data:
row_text = "|"
for i, text in enumerate(row):
if column_sizes[i] == 0 and remove_empty_columns:
continue
row_text += " " + (text or "").ljust(column_sizes[i]) + " |"
row_text += "\n"
f.write(row_text)
f.write(sep)
f.write("\n")
def make_type(klass: str, state: State) -> str:
if klass.find("*") != -1: # Pointer, ignore
return klass
link_type = klass
if link_type.endswith("[]"): # Typed array, strip [] to link to contained type.
link_type = link_type[:-2]
if link_type in state.classes:
return ":ref:`{}<class_{}>`".format(klass, link_type)
print_error('{}.xml: Unresolved type "{}".'.format(state.current_class, klass), state)
return klass
def make_enum(t: str, state: State) -> str:
p = t.find(".")
if p >= 0:
c = t[0:p]
e = t[p + 1 :]
# Variant enums live in GlobalScope but still use periods.
if c == "Variant":
c = "@GlobalScope"
e = "Variant." + e
else:
c = state.current_class
e = t
if c in state.classes and e not in state.classes[c].enums:
c = "@GlobalScope"
if c in state.classes and e in state.classes[c].enums:
return ":ref:`{0}<enum_{1}_{0}>`".format(e, c)
# Don't fail for `Vector3.Axis`, as this enum is a special case which is expected not to be resolved.
if "{}.{}".format(c, e) != "Vector3.Axis":
print_error('{}.xml: Unresolved enum "{}".'.format(state.current_class, t), state)
return t
def make_method_signature(
class_def: ClassDef, definition: Union[AnnotationDef, MethodDef, SignalDef], ref_type: str, state: State
) -> Tuple[str, str]:
ret_type = ""
is_method_def = isinstance(definition, MethodDef)
if is_method_def:
ret_type = definition.return_type.to_rst(state)
qualifiers = None
if is_method_def or isinstance(definition, AnnotationDef):
qualifiers = definition.qualifiers
out = ""
if is_method_def and ref_type != "":
if ref_type == "operator":
out += ":ref:`{0}<class_{1}_{2}_{3}_{4}>` ".format(
definition.name.replace("<", "\\<"), # So operator "<" gets correctly displayed.
class_def.name,
ref_type,
sanitize_operator_name(definition.name, state),
definition.return_type.type_name,
)
else:
out += ":ref:`{0}<class_{1}_{2}_{0}>` ".format(definition.name, class_def.name, ref_type)
else:
out += "**{}** ".format(definition.name)
out += "**(**"
for i, arg in enumerate(definition.parameters):
if i > 0:
out += ", "
else:
out += " "
out += "{} {}".format(arg.type_name.to_rst(state), arg.name)
if arg.default_value is not None:
out += "=" + arg.default_value
if qualifiers is not None and "vararg" in qualifiers:
if len(definition.parameters) > 0:
out += ", ..."
else:
out += " ..."
out += " **)**"
if qualifiers is not None:
# Use substitutions for abbreviations. This is used to display tooltips on hover.
# See `make_footer()` for descriptions.
for qualifier in qualifiers.split():
out += " |" + qualifier + "|"
return ret_type, out
def make_heading(title: str, underline: str, l10n: bool = True) -> str:
if l10n:
new_title = translate(title)
if new_title != title:
title = new_title
underline *= 2 # Double length to handle wide chars.
return title + "\n" + (underline * len(title)) + "\n\n"
def make_footer() -> str:
# Generate reusable abbreviation substitutions.
# This way, we avoid bloating the generated rST with duplicate abbreviations.
# fmt: off
return (
".. |virtual| replace:: :abbr:`virtual (" + translate("This method should typically be overridden by the user to have any effect.") + ")`\n"
".. |const| replace:: :abbr:`const (" + translate("This method has no side effects. It doesn't modify any of the instance's member variables.") + ")`\n"
".. |vararg| replace:: :abbr:`vararg (" + translate("This method accepts any number of arguments after the ones described here.") + ")`\n"
".. |constructor| replace:: :abbr:`constructor (" + translate("This method is used to construct a type.") + ")`\n"
".. |static| replace:: :abbr:`static (" + translate("This method doesn't need an instance to be called, so it can be called directly using the class name.") + ")`\n"
".. |operator| replace:: :abbr:`operator (" + translate("This method describes a valid operator to use with this type as left-hand operand.") + ")`\n"
)
# fmt: on
def make_link(url: str, title: str) -> str:
match = GODOT_DOCS_PATTERN.search(url)
if match:
groups = match.groups()
if match.lastindex == 2:
# Doc reference with fragment identifier: emit direct link to section with reference to page, for example:
# `#calling-javascript-from-script in Exporting For Web`
# Or use the title if provided.
if title != "":
return "`" + title + " <../" + groups[0] + ".html" + groups[1] + ">`__"
return "`" + groups[1] + " <../" + groups[0] + ".html" + groups[1] + ">`__ in :doc:`../" + groups[0] + "`"
elif match.lastindex == 1:
# Doc reference, for example:
# `Math`
if title != "":
return ":doc:`" + title + " <../" + groups[0] + ">`"
return ":doc:`../" + groups[0] + "`"
# External link, for example:
# `http://enet.bespin.org/usergroup0.html`
if title != "":
return "`" + title + " <" + url + ">`__"
return "`" + url + " <" + url + ">`__"
def sanitize_operator_name(dirty_name: str, state: State) -> str:
clear_name = dirty_name.replace("operator ", "")
if clear_name == "!=":
clear_name = "neq"
elif clear_name == "==":
clear_name = "eq"
elif clear_name == "<":
clear_name = "lt"
elif clear_name == "<=":
clear_name = "lte"
elif clear_name == ">":
clear_name = "gt"
elif clear_name == ">=":
clear_name = "gte"
elif clear_name == "+":
clear_name = "sum"
elif clear_name == "-":
clear_name = "dif"
elif clear_name == "*":
clear_name = "mul"
elif clear_name == "/":
clear_name = "div"
elif clear_name == "%":
clear_name = "mod"
elif clear_name == "**":
clear_name = "pow"
elif clear_name == "unary+":
clear_name = "unplus"
elif clear_name == "unary-":
clear_name = "unminus"
elif clear_name == "<<":
clear_name = "bwsl"
elif clear_name == ">>":
clear_name = "bwsr"
elif clear_name == "&":
clear_name = "bwand"
elif clear_name == "|":
clear_name = "bwor"
elif clear_name == "^":
clear_name = "bwxor"
elif clear_name == "~":
clear_name = "bwnot"
elif clear_name == "[]":
clear_name = "idx"
else:
clear_name = "xxx"
print_error('Unsupported operator type "{}", please add the missing rule.'.format(dirty_name), state)
return clear_name
def indent_bullets(text: str) -> str:
# Take the text and check each line for a bullet point represented by "-".
# Where found, indent the given line by a further "\t".
# Used to properly indent bullet points contained in the description for enum values.
# Ignore the first line - text will be prepended to it so bullet points wouldn't work anyway.
bullet_points = "-"
lines = text.splitlines(keepends=True)
for line_index, line in enumerate(lines[1:], start=1):
pos = 0
while pos < len(line) and line[pos] == "\t":
pos += 1
if pos < len(line) and line[pos] in bullet_points:
lines[line_index] = line[:pos] + "\t" + line[pos:]
return "".join(lines)
if __name__ == "__main__":
main()