From 294b72cb9d294bc7ff5e5c410a58278fc1f07112 Mon Sep 17 00:00:00 2001
From: "E. Almqvist" <elalmqvist@gmail.com>
Date: Fri, 18 Dec 2020 13:36:34 +0100
Subject: [PATCH] Bloat

---
 2020/18.py | 262 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 262 insertions(+)
 create mode 100755 2020/18.py

diff --git a/2020/18.py b/2020/18.py
new file mode 100755
index 0000000..7b8197e
--- /dev/null
+++ b/2020/18.py
@@ -0,0 +1,262 @@
+#!/usr/bin/env python
+
+from aoc import get_input # AoC
+import re # regex
+
+mathproblems = get_input(18).splitlines()
+
+operators = ["+", "*"]
+
+def strToList(string):
+    list1=[]
+    list1[:0]=string
+    return list1
+
+def findParens(s):
+    toret = dict()
+    pstack = []
+
+    for i, c in enumerate(s):
+        if( c == "(" ):
+            pstack.append(i)
+        elif( c == ")" ):
+            if( len(pstack) == 0 ):
+                raise IndexError("No matching closing parens at: " + str(i))
+            toret[pstack.pop()] = i
+
+    if(len(pstack) > 0):
+        raise IndexError("No matching opening parens at: " + str(pstack.pop()))
+
+    return toret
+
+def getFirstNum(chars:list):
+    first = None
+
+    for i in range(len(chars)):
+        char = chars[i]
+        print(f"check {char=}", end=" ")
+        if(not char in operators and char != "(" and char != ")" and char != ""):
+            first  = int(char)
+            print("is first")
+
+            break
+        else:
+            print("")
+
+    return first
+
+
+def calcMath(chars:list):
+    count = 0
+    first = getFirstNum(chars)
+    count += first
+
+    for i in range(len(chars)):
+        char = chars[i]
+
+        after = None
+
+        if(char == "+"):
+            after = chars[i+1]
+            count += int(after)
+        elif(char == "*"):
+            after = chars[i+1]
+            count *= int(after)
+
+        print(f"{first=} {char=} {i=} {after=} {count=}")
+
+    return count
+
+def parseMath(line):
+    line =  line.replace(" ", "")
+    count = 0
+
+    # calculate all pars  and replace them
+    pars = findParens(line)
+    chars = strToList(line)
+    print(chars)
+
+    for start, end in pars.items():
+        calc = calcMath(chars[start:end+1])
+
+        for j in range(start, end+1):
+            chars[j] = ""
+
+        chars[start] = str(calc)
+
+
+    print("##########3")
+    # remove bad chars
+    chars = list( filter(lambda c: c != "", chars) )
+    print(chars)
+
+
+    # calculate the rest
+    count += calcMath(chars)
+
+    return count
+
+def printMath(mathlist):
+    for m in mathlist:
+        print(m, end="")
+    print("")
+
+def lstToStr(lst):
+    out = ""
+    for char in lst:
+        out += str(char)
+    return out
+
+def copyList(lst):
+    return [elem  for elem in lst]
+
+# def addPars(line:str):
+#     chars = strToList(line)
+#     plusCount = chars.count("+")
+
+#     seekingEnd = None
+#     parsPos = dict()
+
+#     print("#", line)
+#     for i in range(len(chars)):
+#         char = chars[i]
+
+#         if(char == "+"):
+#             parsPos[i-1] = None
+#             seekingEnd = i-1
+
+#         if( (char == "*" and seekingEnd != None) ):
+#             parsPos[seekingEnd] = i
+#             seekingEnd = None
+
+#         if( seekingEnd != None and i >= len(chars) - 1 ):
+#             parsPos[seekingEnd] = i+1
+#             seekingEnd = None
+
+#         if( seekingEnd != None and char == ")" ):
+#             parsPos[seekingEnd] = i+1
+#             seekingEnd = None
+
+#         print(f"{i=}:{char=} {parsPos=}")
+
+#     offset = 0
+#     needEnd = 0
+#     for pstart, pend in parsPos.items():
+#         print("#", pstart, pend)
+
+#         if(pend != None):
+#             chars.insert(pstart+offset, "(")
+#             offset += 1
+
+#             chars.insert(pend+offset, ")")
+#             offset += 1
+#         else:
+#             chars.insert(pstart+offset, 0)
+#             offset += 1
+#             printMath(chars)
+
+#             chars.insert(pstart+offset, "+")
+#             offset += 1
+#             printMath(chars)
+
+#             chars.insert(pstart+offset-2, "(")
+#             offset += 1
+#             printMath(chars)
+
+#             needEnd += 1
+
+#     for i in range(needEnd):
+#         chars.append(")")
+
+#     print("RES", end=" ")
+#     printMath(chars)
+
+#     return chars
+
+# import ast
+
+# def recurse(node):
+#     out = ""
+#     if( isinstance(node, ast.Add) ):
+
+
+# def addPars(line:str):
+#     out = strToList(line)
+
+#     offset = 0
+#     parDepth = 0
+#     seekingClose = False
+
+#     startFound = None
+#     endFound = None
+
+#     for i in range(len(line)):
+#         char = line[i]
+#         prefix = "-----"
+
+#         if( char == "+" and not seekingClose ):
+#             out.insert(i - 1 + offset, "(" )
+#             seekingClose = True
+#             startFound = i-1+offset
+#             offset += 1
+
+
+#             prefix = "start"
+
+#         elif( char == "(" ):
+#             parDepth += 1
+#         elif( char == ")" ):
+#             parDepth -= 1
+
+#         elif( (char == "*") and seekingClose and parDepth == 0 ):
+#             out.insert(i + offset, ")")
+#             offset += 1
+#             seekingClose = False
+#             endFound = i+offset
+
+#             prefix = "close"
+
+
+
+#         math = lstToStr(out)
+#         print(f"{prefix} {i=}:{char=} {math=} {offset=}")
+
+#     return out
+
+def addParsToSub(line:str):
+    # this function split the strings addition thing
+    # no parenthesis here
+
+    addlines = line.split("*") # each element is an addition
+    newline = ""
+
+    for i in range(len(addlines)):
+        l = addlines[i]
+        if( i < 1 ):
+            newline += f"({l})*"
+        elif( i >= 1 and i < len(addlines)-1 ):
+            newline += f"({l})*"
+        elif( i == len(addlines)-1 ):
+            newline += f"({l})"
+
+    return newline
+
+    
+def parseMath2(line):
+    line = line.replace(" ", "")
+    count = 0
+
+
+
+
+problem = mathproblems[0]
+res = parseMath2(problem)
+print("\n--##########################--")
+print( problem, "=", res )
+
+# mathsum = 0
+
+# for maththing in mathproblems:
+#     mathsum += parseMath(maththing)
+
+# print(mathsum)