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config-to-java.py
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333 lines (286 loc) · 10.1 KB
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import json
import os
from collections import defaultdict
config_dir = "config"
java_dir = "java"
symbol_table = {
"?": {
"path": None,
"import": None,
"builtin": True,
"obj": None
},
"Object": {
"path": None,
"import": None,
"builtin": True,
"obj": None
},
"String": {
"path": None,
"import": None,
"builtin": True,
"obj": None
},
"Number": {
"path": None,
"import": None,
"builtin": True,
"obj": None
},
"Boolean": {
"path": None,
"import": None,
"builtin": True,
"obj": None
},
"List": {
"path": None,
"import": "java.util.List",
"builtin": True,
"obj": None
},
"Map": {
"path": None,
"import": "java.util.Map",
"builtin": True,
"obj": None
},
"Accessors": {
"path": None,
"import": "lombok.experimental.Accessors",
"builtin": True,
"obj": None
},
"Data": {
"path": None,
"import": "lombok.Data",
"builtin": True,
"obj": None
},
"AccessLevel": {
"path": None,
"import": "lombok.AccessLevel",
"builtin": True,
"obj": None
},
"Setter": {
"path": None,
"import": "lombok.Setter",
"builtin": True,
"obj": None
},
"Serializable": {
"path": None,
"import": "java.io.Serializable",
"builtin": True,
"obj": None
}
}
def build_symbol_table():
for root, _, files in os.walk(config_dir):
for file in files:
path = os.path.join(root, file)
obj = json.load(open(path))
name = obj["name"].split("<")[0]
symbol_table[name] = {
"path": os.path.join(root.replace(config_dir, java_dir), "{}.java".format(name)),
"import": "{}.{}".format(".".join(root.replace(config_dir + "/", "").split("/")), name),
"builtin": False,
"obj": obj
}
def get_symbols(type):
type = type.replace("<", " ")
type = type.replace(">", " ")
type = type.replace("[]", " ")
type = type.replace(",", " ")
return set(type.split())
def get_all_symbols(obj, include_inheritance=True):
symbols = set()
if obj["type"] == "class":
if include_inheritance:
for implement in obj["implements"]:
symbols |= get_symbols(implement)
elif obj["type"] == "interface":
if include_inheritance:
for extend in obj["extends"]:
symbols |= get_symbols(extend)
for field in obj["fields"]:
if "ignore" not in field or field["ignore"] == False:
for type in field["types"]:
symbols |= get_symbols(type)
return symbols
def get_symbols_dfs(obj):
symbols = set()
if obj["type"] == "class":
symbols = get_all_symbols(obj)
for implement in obj["implements"]:
implement = implement.split("<")[0]
symbols |= get_symbols_dfs(symbol_table[implement]["obj"])
elif obj["type"] == "interface":
symbols = get_all_symbols(obj, include_inheritance=False)
for extend in obj["extends"]:
extend = extend.split("<")[0]
symbols |= get_symbols_dfs(symbol_table[extend]["obj"])
return symbols
def generate_package_line(info, lines):
name = info["obj"]["name"].split("<")[0]
lines.append("package {};\n".format(
info["import"].replace(".{}".format(name), "")))
def generate_import_lines(info, symbols, fields, lines):
symbol_links = []
for types in fields.values():
if len(types) > 1:
symbol_links.append(symbol_table["AccessLevel"]["import"])
symbol_links.append(symbol_table["Setter"]["import"])
break
for symbol in symbols:
if symbol in symbol_table:
if symbol_table[symbol]["import"] != None:
if symbol_table[symbol]["import"].split(".")[:-1] != info["import"].split(".")[:-1]:
symbol_links.append(symbol_table[symbol]["import"])
else:
print("Warning: symbol {} not defined".format(symbol))
symbol_links.sort()
last_symbol_link_prefix = ""
for symbol_link in symbol_links:
symbol_link_prefix = symbol_link.split(".")[0]
if symbol_link_prefix != last_symbol_link_prefix:
lines.append("\n")
lines.append("import {};\n".format(symbol_link))
last_symbol_link_prefix = symbol_link_prefix
lines.append("\n")
def generate_comment_lines(obj, lines):
if obj["comments"]:
lines.append("/**\n")
for comment in obj["comments"]:
lines.append(" * {}\n".format(comment))
lines.append(" */\n")
def generate_annotation_lines(lines):
lines.append("@Accessors(chain = true)\n")
lines.append("@Data\n")
def generate_class_start_line(obj, lines):
implements = list(obj["implements"])
if "Serializable" not in implements:
implements.append("Serializable")
lines.append("public class {} implements {} {{\n".format(obj["name"], ", ".join(implements)))
lines.append("\n private static final long serialVersionUID = 1L;\n")
def generate_interface_start_line(obj, lines):
if len(obj["extends"]) == 0:
lines.append("public interface {} {{\n".format(obj["name"]))
else:
lines.append("public interface {} extends {} {{\n".format(
obj["name"], ", ".join(obj["extends"])))
def merge_fields(src, dst, override=False):
for field in src:
if override:
dst[field] = src[field]
else:
dst[field] |= src[field]
def get_all_fields(obj):
fields = defaultdict(set)
defaults = {}
for field in obj["fields"]:
if "ignore" not in field or field["ignore"] == False:
fields[field["name"]] |= set(field["types"])
if "default" in field:
defaults[field["name"]] = field["default"]
return fields, defaults
def get_fields_dfs(obj):
fields = defaultdict(set)
defaults = {}
if obj["type"] == "class":
for implement in obj["implements"]:
subfields, subdefaults = get_fields_dfs(symbol_table[implement]["obj"])
merge_fields(subfields, fields)
defaults.update(subdefaults)
elif obj["type"] == "interface":
for extend in obj["extends"]:
extend = extend.split("<")[0]
subfields, subdefaults = get_fields_dfs(symbol_table[extend]["obj"])
merge_fields(subfields, fields)
defaults.update(subdefaults)
subfields, subdefaults = get_all_fields(obj)
merge_fields(subfields, fields)
defaults.update(subdefaults)
return fields, defaults
def eliminate_fields_conflicts(fields):
for name, types in fields.items():
# Unknown Class -> Object
new_types = set()
for type in types:
for symbol in get_symbols(type):
if symbol not in symbol_table:
type = type.replace(symbol, "Object")
new_types.add(type)
fields[name] = new_types
def generate_class_body_lines(obj, fields, defaults, lines):
if len(fields) == 0:
lines.append("\n")
for name, types in fields.items():
if len(types) == 1:
if name in defaults:
lines.append("\n private {} {} = {};\n".format(list(types)[0], name, json.dumps(defaults[name])))
else:
lines.append("\n private {} {};\n".format(list(types)[0], name))
else:
lines.append("\n @Setter(AccessLevel.NONE)\n")
if name in defaults:
lines.append(" private Object {} = {};\n".format(name, json.dumps(defaults[name])))
else:
lines.append(" private Object {};\n".format(name))
for type in sorted(list(types)):
lines.append("\n public {} set{}({} {}) {{\n".format(
obj["name"], name[0].upper() + name[1:], type, name))
lines.append(" this.{} = {};\n".format(name, name))
lines.append(" return this;\n")
lines.append(" }\n")
def generate_interface_body_lines(obj, fields, lines):
if len(fields) == 0:
lines.append("\n")
for name, types in fields.items():
for type in sorted(list(types)):
lines.append("\n {} set{}({} {});\n".format(
obj["name"], name[0].upper() + name[1:], type, name))
def generate_end_line(lines):
lines.append("}\n")
def generate_file(info, lines):
os.makedirs(os.path.dirname(info["path"]), exist_ok=True)
outfile = open(info["path"], "w")
outfile.writelines(lines)
outfile.close()
def generate_class(info):
obj = info["obj"]
symbols = get_symbols_dfs(obj)
fields, defaults = get_fields_dfs(obj)
eliminate_fields_conflicts(fields)
symbols |= {"Accessors", "Data", "Serializable"}
lines = []
generate_package_line(info, lines)
generate_import_lines(info, symbols, fields, lines)
generate_annotation_lines(lines)
generate_class_start_line(obj, lines)
generate_class_body_lines(obj, fields, defaults, lines)
generate_end_line(lines)
generate_file(info, lines)
def generate_interface(info):
obj = info["obj"]
symbols = get_all_symbols(obj)
fields, _ = get_all_fields(obj)
eliminate_fields_conflicts(fields)
lines = []
generate_package_line(info, lines)
generate_import_lines(info, symbols, {}, lines)
generate_comment_lines(obj, lines)
generate_interface_start_line(obj, lines)
generate_interface_body_lines(obj, fields, lines)
generate_end_line(lines)
generate_file(info, lines)
if __name__ == "__main__":
build_symbol_table()
for symbol, info in symbol_table.items():
if info["builtin"] == False:
if info["obj"]["type"] == "class":
generate_class(info)
elif info["obj"]["type"] == "interface":
generate_interface(info)