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#!/usr/bin/python
import os, sys, subprocess
COMPILER = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'src', 'parser.js')
def emscripten(filename, js_engine, settings):
data = open(filename, 'r').read()
cwd = os.getcwd()
os.chdir(os.path.dirname(COMPILER))
subprocess.Popen([js_engine, COMPILER], stdin=subprocess.PIPE).communicate(settings+'\n'+data)[0]
os.chdir(cwd)
if __name__ == '__main__':
if sys.argv.__len__() not in [3,4]:
print '''
Emscripten usage: emscripten.py INFILE PATH-TO-JS-ENGINE [SETTINGS]
INFILE must be in human-readable LLVM disassembly form (i.e., as text,
not binary).
PATH-TO-JS-ENGINE should be a path to the JavaScript engine used to
run the compiler (which is in JavaScript itself). You can later use
the same engine to run the code, or another one, that is a separate
issue.
SETTINGS is an optional set of compiler settings, overriding the defaults.
'''
else:
emscripten(sys.argv[1], sys.argv[2], sys.argv[3] if len(sys.argv) == 4 else "{}")
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