first commit

07/part1.py

@@ -0,0 +1,95 @@
+#!/usr/bin/python
+
+import re
+
+RE_WIRE = re.compile(r'^(.*) -> (.*)$')
+RE_OPER_NOT = re.compile(r'^NOT (.*)$')
+RE_OPER_AND = re.compile(r'^(.*) AND (.*)$')
+RE_OPER_OR = re.compile(r'^(.*) OR (.*)$')
+RE_OPER_LSHIFT = re.compile(r'^(.*) LSHIFT (.*)$')
+RE_OPER_RSHIFT = re.compile(r'^(.*) RSHIFT (.*)$')
+RE_OPER_VALUE = re.compile(r'^(\d+)$')
+RE_OPER_COPY = re.compile(r'^([a-z]+)$')
+
+
+class Wire:
+
+    def __init__(self, name, source):
+        self.name = name
+        self.source = source
+        self.value = None
+
+
+def getWireVaule(name, wires):
+
+    if re.search(RE_OPER_VALUE, name):
+        return int(name)
+
+    if wires[name].value:
+        return wires[name].value
+
+    print "*%s -> %s" % (wires[name].source, wires[name].name)
+    # test on value
+    match = re.search(RE_OPER_VALUE, wires[name].source)
+    if match:
+        wires[name].value = int(match.group(1))
+
+    match = re.search(RE_OPER_COPY, wires[name].source)
+    if match:
+        value = getWireVaule(match.group(1), wires)
+        wires[name].value = value
+
+    match = re.search(RE_OPER_NOT, wires[name].source)
+    if match:
+        value = getWireVaule(match.group(1), wires)
+        wires[name].value = ~value & 0xFFFF
+
+    match = re.search(RE_OPER_AND, wires[name].source)
+    if match:
+        value1 = getWireVaule(match.group(1), wires)
+        value2 = getWireVaule(match.group(2), wires)
+        wires[name].value = value1 & value2
+
+    match = re.search(RE_OPER_OR, wires[name].source)
+    if match:
+        value1 = getWireVaule(match.group(1), wires)
+        value2 = getWireVaule(match.group(2), wires)
+        wires[name].value = value1 | value2
+
+    match = re.search(RE_OPER_LSHIFT, wires[name].source)
+    if match:
+        value1 = getWireVaule(match.group(1), wires)
+        value2 = int(match.group(2))
+        wires[name].value = (value1 << value2) & 0xFFFF
+
+    match = re.search(RE_OPER_RSHIFT, wires[name].source)
+    if match:
+        value1 = getWireVaule(match.group(1), wires)
+        value2 = int(match.group(2))
+        wires[name].value = (value1 >> value2) & 0xFFFF
+
+    return wires[name].value
+
+
+def read_file(filename):
+    file = open(filename, 'r')
+    while True:
+        line = file.readline()
+        if not line:
+            break
+        yield line
+
+
+def main():
+    wire = dict()
+    for line in read_file('input'):
+        match = re.search(RE_WIRE, line)
+        if not match:
+            print "wrong operation syntax"
+        wire[match.group(2)] = Wire(match.group(2), match.group(1))
+
+    print wire
+    print getWireVaule("a", wire)
+
+if __name__ == "__main__":
+    main()