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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import re
begin_script_only_re = re.compile("^// #BEGIN_SCRIPT_ONLY")
end_script_only_re = re.compile("^// #END_SCRIPT_ONLY")
export_re = re.compile("^// #EXPORT (.+)")
def process_file(template_js, kind):
lines = []
is_script_only = False
exports = []
with open(template_js, "r") as f:
for line in f:
if kind == "module":
if is_script_only:
m = end_script_only_re.match(line)
if m:
is_script_only = False
# NOTE: Put an empty line to keep the line number same.
lines.append("\n")
continue
else:
m = begin_script_only_re.match(line)
if m:
is_script_only = True
lines.append("\n")
continue
else:
m = end_script_only_re.match(line)
if m:
lines.append("\n")
continue
m = begin_script_only_re.match(line)
if m:
lines.append("\n")
continue
m = export_re.match(line)
if m:
name = m.group(1)
if kind == "script":
lines.append(f"exports.{name} = {name};\n")
else:
exports.append(name)
lines.append("\n")
continue
lines.append(line)
if kind == "module":
lines.append("export const PromiseWorker = { " + ", ".join(exports) + " };\n")
return "".join(lines)
def generate_script(output, template_js):
output.write(process_file(template_js, "script"))
def generate_module(output, template_js):
output.write(process_file(template_js, "module"))
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