#!/usr/bin/python
from parser import parse_file
from basic_block import find_basic_blocks
from optimizer import optimize_blocks, optimize_global
from writer import write_statements

if __name__ == '__main__':
    from sys import argv, exit

    if len(argv) < 2:
        print 'Usage: python %s FILE' % argv[0]
        exit(1)

    # Parse File
    statements = parse_file(argv[1])
    st_original = len(statements)

    # Optimize on a global level
    statements = optimize_global(statements)

    st_aft_global = len(statements)

    # Create basic blocks
    blocks = find_basic_blocks(statements)

    # Optimize basic blocks
    statements = optimize_blocks(blocks)

    # Rewrite to assembly
    out = write_statements(statements)

    print "Optimization:"
    print "Original statements:", st_original
    print "After global optimization:", st_aft_global
    print "After basic blocks optimization:", len(statements)

    if len(argv) > 2:
        # Save output assembly
        f = open(argv[2], 'w+')
        f.write(out)
        f.close()