outname = os.path.splitext(filename)[0] + '.s'
file = open(filename)
data = file.read()
file.close()
if ("-lex" in sys.argv):
paslex.run_lexer(data)
else:
parser = pasparser.make_parser()
clear_errors()
try:
with subscribe_errors(
lambda msg: sys.stdout.write(msg + "\n")):
root_ast = parser.parse(data)
check.check_program(root_ast)
errors = errors_reported()
if errors == 0:
if ("-ast" in sys.argv):
# dump_class_tree(root_ast)
dot = DotVisitor()
dot.generic_visit(root_ast)
print dot
# Generate code
outfile = open(outname, "w")
mpasgen.generate(outfile, root_ast)
outfile.close()
else:
sys.stderr.write("Number of errors: %d" % errors)
except parseError as e:
sys.stderr.write("Program couldn't be compiled\n")
filename = sys.argv[-1]
outname = os.path.splitext(filename)[0] + '.s'
file = open(filename)
data = file.read()
file.close()
if ("-lex" in sys.argv):
paslex.run_lexer(data)
else:
parser = pasparser.make_parser()
clear_errors()
try:
with subscribe_errors(lambda msg: sys.stdout.write(msg+"\n")):
root_ast = parser.parse(data)
check.check_program(root_ast);
errors = errors_reported();
if errors == 0:
if ("-ast" in sys.argv):
# dump_class_tree(root_ast)
dot = DotVisitor()
dot.generic_visit(root_ast)
print dot
# Generate code
outfile = open(outname, "w")
mpasgen.generate(outfile, root_ast)
outfile.close()
else:
sys.stderr.write("Number of errors: %d" % errors)
except parseError as e:
sys.stderr.write("Program couldn't be compiled\n")
def visit_WhileBlock(self,block):
# Emit a conditional jump around the if-branch
#inst = ('while', block.condvar)
#block+=inst)
self.visit_BasicBlock(block)
self.visit(block.truebranch)
if __name__ == '__main__':
import lexer
import parser as parser
import check
import sys
from errors import subscribe_errors, errors_reported
lexer = lexer.make_lexer()
parser = parser.make_parser()
with subscribe_errors(lambda msg: sys.stdout.write(msg+"\n")):
program = parser.parse(open(sys.argv[1]).read())
# Check the program
env = check.check_program(program)
# If no errors occurred, generate code
if not errors_reported():
code = generate_code(program)
print code
# Emit the code sequence
JumpGenerator().visit(code)
#for inst in code:
# print(inst)