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package moe.nea.firmament.commands
import com.mojang.brigadier.Command
import com.mojang.brigadier.RedirectModifier
import com.mojang.brigadier.StringReader
import com.mojang.brigadier.builder.LiteralArgumentBuilder
import com.mojang.brigadier.context.CommandContextBuilder
import com.mojang.brigadier.context.StringRange
import com.mojang.brigadier.exceptions.CommandSyntaxException
import com.mojang.brigadier.tree.CommandNode
import com.mojang.brigadier.tree.LiteralCommandNode
import java.util.function.Predicate
class CaseInsensitiveLiteralCommandNode<S>(
literal: String, command: Command<S>?, requirement: Predicate<S>?,
redirect: CommandNode<S>?, modifier: RedirectModifier<S>?, forks: Boolean
) : LiteralCommandNode<S>(
literal.lowercase(), command, requirement, redirect, modifier, forks
) {
class Builder<S>(literal: String) : LiteralArgumentBuilder<S>(literal) {
override fun build(): LiteralCommandNode<S> {
val result = CaseInsensitiveLiteralCommandNode(
literal,
command, requirement, redirect, redirectModifier, isFork
)
for (argument in arguments) {
result.addChild(argument)
}
return result
}
}
override fun createBuilder(): LiteralArgumentBuilder<S> {
return Builder<S>(literal).also {
it.requires(requirement)
it.forward(redirect, redirectModifier, isFork)
if (command != null)
it.executes(command)
}
}
override fun parse(reader: StringReader, contextBuilder: CommandContextBuilder<S>) {
val start = reader.cursor
val end = parse0(reader)
if (end > -1) {
contextBuilder.withNode(this, StringRange.between(start, end))
return
}
throw CommandSyntaxException.BUILT_IN_EXCEPTIONS.literalIncorrect().createWithContext(reader, literal)
}
override fun toString(): String {
return "<iliteral $literal>"
}
private fun parse0(reader: StringReader): Int {
val start = reader.cursor
if (reader.canRead(literal.length)) {
val end = start + literal.length
if (reader.string.substring(start, end).equals(literal, true)) {
reader.cursor = end
if (!reader.canRead() || reader.peek() == ' ') {
return end
} else {
reader.cursor = start
}
}
}
return -1
}
}
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