Complete builders, start work on using them

This commit is contained in:
FiniteReality
2016-11-15 20:53:18 +00:00
parent f95154af23
commit af433c82cc
11 changed files with 416 additions and 408 deletions

View File

@@ -0,0 +1,173 @@
using System;
using System.Linq;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Collections.Concurrent;
using System.Threading.Tasks;
using System.Reflection;
using Discord.Commands.Builders;
namespace Discord.Commands
{
public class CommandInfo
{
private static readonly System.Reflection.MethodInfo _convertParamsMethod = typeof(CommandInfo).GetTypeInfo().GetDeclaredMethod(nameof(ConvertParamsList));
private static readonly ConcurrentDictionary<Type, Func<IEnumerable<object>, object>> _arrayConverters = new ConcurrentDictionary<Type, Func<IEnumerable<object>, object>>();
private readonly Func<CommandContext, object[], Task> _action;
public ModuleInfo Module { get; }
public string Name { get; }
public string Summary { get; }
public string Remarks { get; }
public int Priority { get; }
public bool HasVarArgs { get; }
public RunMode RunMode { get; }
public IReadOnlyList<string> Aliases { get; }
public IReadOnlyList<ParameterInfo> Parameters { get; }
public IReadOnlyList<PreconditionAttribute> Preconditions { get; }
internal CommandInfo(CommandBuilder builder, ModuleInfo module, CommandService service)
{
Module = module;
Name = builder.Name;
Summary = builder.Summary;
Remarks = builder.Remarks;
Aliases = module.Aliases.Permutate(builder.Aliases, (first, second) => first + " " + second).ToImmutableArray();
Preconditions = builder.Preconditions.ToImmutableArray();
Parameters = builder.Parameters.Select(x => x.Build(this, service)).ToImmutableArray();
_action = builder.Callback;
}
public async Task<PreconditionResult> CheckPreconditions(CommandContext context, IDependencyMap map = null)
{
if (map == null)
map = DependencyMap.Empty;
foreach (PreconditionAttribute precondition in Module.Preconditions)
{
var result = await precondition.CheckPermissions(context, this, map).ConfigureAwait(false);
if (!result.IsSuccess)
return result;
}
foreach (PreconditionAttribute precondition in Preconditions)
{
var result = await precondition.CheckPermissions(context, this, map).ConfigureAwait(false);
if (!result.IsSuccess)
return result;
}
return PreconditionResult.FromSuccess();
}
public async Task<ParseResult> Parse(CommandContext context, SearchResult searchResult, PreconditionResult? preconditionResult = null)
{
if (!searchResult.IsSuccess)
return ParseResult.FromError(searchResult);
if (preconditionResult != null && !preconditionResult.Value.IsSuccess)
return ParseResult.FromError(preconditionResult.Value);
string input = searchResult.Text;
var matchingAliases = Aliases.Where(alias => input.StartsWith(alias));
string matchingAlias = "";
foreach (string alias in matchingAliases)
{
if (alias.Length > matchingAlias.Length)
matchingAlias = alias;
}
input = input.Substring(matchingAlias.Length);
return await CommandParser.ParseArgs(this, context, input, 0).ConfigureAwait(false);
}
public Task<ExecuteResult> Execute(CommandContext context, ParseResult parseResult)
{
if (!parseResult.IsSuccess)
return Task.FromResult(ExecuteResult.FromError(parseResult));
var argList = new object[parseResult.ArgValues.Count];
for (int i = 0; i < parseResult.ArgValues.Count; i++)
{
if (!parseResult.ArgValues[i].IsSuccess)
return Task.FromResult(ExecuteResult.FromError(parseResult.ArgValues[i]));
argList[i] = parseResult.ArgValues[i].Values.First().Value;
}
var paramList = new object[parseResult.ParamValues.Count];
for (int i = 0; i < parseResult.ParamValues.Count; i++)
{
if (!parseResult.ParamValues[i].IsSuccess)
return Task.FromResult(ExecuteResult.FromError(parseResult.ParamValues[i]));
paramList[i] = parseResult.ParamValues[i].Values.First().Value;
}
return Execute(context, argList, paramList);
}
public async Task<ExecuteResult> Execute(CommandContext context, IEnumerable<object> argList, IEnumerable<object> paramList)
{
try
{
var args = GenerateArgs(argList, paramList);
switch (RunMode)
{
case RunMode.Sync: //Always sync
await _action(context, args).ConfigureAwait(false);
break;
case RunMode.Mixed: //Sync until first await statement
var t1 = _action(context, args);
break;
case RunMode.Async: //Always async
var t2 = Task.Run(() => _action(context, args));
break;
}
return ExecuteResult.FromSuccess();
}
catch (Exception ex)
{
return ExecuteResult.FromError(ex);
}
}
private object[] GenerateArgs(IEnumerable<object> argList, IEnumerable<object> paramsList)
{
int argCount = Parameters.Count;
var array = new object[Parameters.Count];
if (HasVarArgs)
argCount--;
int i = 0;
foreach (var arg in argList)
{
if (i == argCount)
throw new InvalidOperationException("Command was invoked with too many parameters");
array[i++] = arg;
}
if (i < argCount)
throw new InvalidOperationException("Command was invoked with too few parameters");
if (HasVarArgs)
{
var func = _arrayConverters.GetOrAdd(Parameters[Parameters.Count - 1].ParameterType, t =>
{
var method = _convertParamsMethod.MakeGenericMethod(t);
return (Func<IEnumerable<object>, object>)method.CreateDelegate(typeof(Func<IEnumerable<object>, object>));
});
array[i] = func(paramsList);
}
return array;
}
private static T[] ConvertParamsList<T>(IEnumerable<object> paramsList)
=> paramsList.Cast<T>().ToArray();
}
}

View File

@@ -0,0 +1,74 @@
using System;
using System.Linq;
using System.Collections.Generic;
using System.Collections.Immutable;
using Discord.Commands.Builders;
namespace Discord.Commands
{
public class ModuleInfo
{
public CommandService Service { get; }
public string Name { get; }
public string Summary { get; }
public string Remarks { get; }
public IReadOnlyList<string> Aliases { get; }
public IEnumerable<CommandInfo> Commands { get; }
public IReadOnlyList<PreconditionAttribute> Preconditions { get; }
internal ModuleInfo(ModuleBuilder builder, CommandService service)
{
Service = service;
Name = builder.Name;
Summary = builder.Summary;
Remarks = builder.Remarks;
Aliases = BuildAliases(builder).ToImmutableArray();
Commands = builder.Commands.Select(x => x.Build(this, service));
Preconditions = BuildPreconditions(builder).ToImmutableArray();
}
private static List<string> BuildAliases(ModuleBuilder builder)
{
IEnumerable<string> result = null;
Stack<ModuleBuilder> builderStack = new Stack<ModuleBuilder>();
ModuleBuilder parent = builder;
while (parent.ParentModule != null)
{
builderStack.Push(parent);
parent = parent.ParentModule;
}
while (builderStack.Count() > 0)
{
ModuleBuilder level = builderStack.Pop(); // get the topmost builder
if (result == null)
result = level.Aliases.ToList(); // create a shallow copy so we don't overwrite the builder unexpectedly
else
result = result.Permutate(level.Aliases, (first, second) => first + " " + second);
}
return result.ToList();
}
private static List<PreconditionAttribute> BuildPreconditions(ModuleBuilder builder)
{
var result = new List<PreconditionAttribute>();
ModuleBuilder parent = builder;
while (parent.ParentModule != null)
{
result.AddRange(parent.Preconditions);
parent = parent.ParentModule;
}
return result;
}
}
}

View File

@@ -0,0 +1,46 @@
using System;
using System.Linq;
using System.Threading.Tasks;
using Discord.Commands.Builders;
namespace Discord.Commands
{
public class ParameterInfo
{
private readonly TypeReader _reader;
internal ParameterInfo(ParameterBuilder builder, CommandInfo command, CommandService service)
{
Command = command;
Name = builder.Name;
Summary = builder.Summary;
IsOptional = builder.Optional;
IsRemainder = builder.Remainder;
IsMultiple = builder.Multiple;
ParameterType = builder.ParameterType;
DefaultValue = builder.DefaultValue;
_reader = builder.TypeReader;
}
public CommandInfo Command { get; }
public string Name { get; }
public string Summary { get; }
public bool IsOptional { get; }
public bool IsRemainder { get; }
public bool IsMultiple { get; }
public Type ParameterType { get; }
public object DefaultValue { get; }
public async Task<TypeReaderResult> Parse(CommandContext context, string input)
{
return await _reader.Read(context, input).ConfigureAwait(false);
}
public override string ToString() => Name;
private string DebuggerDisplay => $"{Name}{(IsOptional ? " (Optional)" : "")}{(IsRemainder ? " (Remainder)" : "")}";
}
}