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convert Unit into a dataclass, move parse to converter (#257)

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fixes #256
This commit is contained in:
classabbyamp 2020-10-28 21:06:30 -04:00 committed by GitHub
parent 2ac13346d4
commit 77e14a109c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 32 additions and 33 deletions
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57
exts/dbconv.py
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@ -11,6 +11,7 @@ the GNU General Public License, version 2.
import math import math
from enum import Enum from enum import Enum
from typing import Optional from typing import Optional
from dataclasses import dataclass
import discord.ext.commands as commands import discord.ext.commands as commands
@ -21,41 +22,30 @@ from data import options as opt
# not sure why but UnitConverter and Unit need to be defined before DbConvCog and convert() # not sure why but UnitConverter and Unit need to be defined before DbConvCog and convert()
class UnitConverter(commands.Converter): class UnitConverter(commands.Converter):
async def convert(self, ctx: commands.Context, argument: str): async def convert(self, ctx: commands.Context, argument: str):
is_db = None
mult = None
unit = None
utype = None
try: try:
return Unit(argument) s = argument.lower()
except ValueError as e:
raise commands.BadArgument(message=str(e))
class Unit:
def __init__(self, raw: str):
self.raw: str = raw
self.unit: str
self.type: UnitType
self.is_db: bool
self.mult: int
self._parse()
def _parse(self):
s = self.raw.lower()
if len(s) > 2 and s[:2] == "db": if len(s) > 2 and s[:2] == "db":
self.is_db = True is_db = True
if s[2:] in units: if s[2:] in units:
u = units[s[2:]] u = units[s[2:]]
self.mult = u["mult"] mult = u["mult"]
self.unit = u["log"] unit = u["log"]
self.type = u["type"] utype = u["type"]
elif s in units: elif s in units:
self.is_db = False is_db = False
u = units[s] u = units[s]
self.mult = u["mult"] mult = u["mult"]
self.unit = u["scalar"] unit = u["scalar"]
self.type = u["type"] utype = u["type"]
else: else:
raise ValueError(f"Invalid unit: {self.raw}") raise ValueError(f"Invalid unit: {argument}")
return Unit(argument, unit, utype, is_db, mult)
def __str__(self): except ValueError as e:
return self.unit raise commands.BadArgument(message=str(e))
class UnitType(Enum): class UnitType(Enum):
@ -64,6 +54,15 @@ class UnitType(Enum):
antenna = 3 antenna = 3
@dataclass
class Unit:
raw: str
unit: str
type: UnitType
is_db: bool
mult: int
class DbConvCog(commands.Cog): class DbConvCog(commands.Cog):
def __init__(self, bot: commands.Bot): def __init__(self, bot: commands.Bot):
self.bot = bot self.bot = bot
@ -85,7 +84,7 @@ class DbConvCog(commands.Cog):
if value is not None and unit_from is not None and unit_to is not None: if value is not None and unit_from is not None and unit_to is not None:
converted = convert(value, unit_from, unit_to) converted = convert(value, unit_from, unit_to)
embed.title = f"{value:.3g} {unit_from} = {converted:.3g} {unit_to}" embed.title = f"{value:.3g} {unit_from.unit} = {converted:.3g} {unit_to.unit}"
embed.colour = cmn.colours.good embed.colour = cmn.colours.good
else: else:
embed.title = "Decibel Quick Reference" embed.title = "Decibel Quick Reference"