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Added //calc, //eval, etc. to evaluate mathematical expressions.

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This commit is contained in:
sk89q 2014-07-03 03:34:19 -07:00
parent 6c4a321d61
commit 51a540dab1
1 changed files with 23 additions and 0 deletions
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23
src/main/java/com/sk89q/worldedit/command/UtilityCommands.java
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@ -22,6 +22,7 @@ package com.sk89q.worldedit.command;
import com.google.common.base.Joiner;
import com.sk89q.minecraft.util.commands.Command;
import com.sk89q.minecraft.util.commands.CommandContext;
import com.sk89q.minecraft.util.commands.CommandException;
import com.sk89q.minecraft.util.commands.CommandPermissions;
import com.sk89q.minecraft.util.commands.Logging;
import com.sk89q.worldedit.EditSession;
@ -36,6 +37,9 @@ import com.sk89q.worldedit.blocks.BaseBlock;
import com.sk89q.worldedit.entity.Player;
import com.sk89q.worldedit.extension.platform.Actor;
import com.sk89q.worldedit.extension.platform.CommandManager;
import com.sk89q.worldedit.internal.expression.Expression;
import com.sk89q.worldedit.internal.expression.ExpressionException;
import com.sk89q.worldedit.internal.expression.runtime.EvaluationException;
import com.sk89q.worldedit.patterns.Pattern;
import com.sk89q.worldedit.patterns.SingleBlockPattern;
import com.sk89q.worldedit.regions.CuboidRegion;
@ -44,6 +48,7 @@ import com.sk89q.worldedit.util.command.CommandCallable;
import com.sk89q.worldedit.util.command.CommandMapping;
import com.sk89q.worldedit.util.command.Dispatcher;
import com.sk89q.worldedit.util.command.PrimaryAliasComparator;
import com.sk89q.worldedit.util.command.binding.Text;
import com.sk89q.worldedit.util.command.parametric.Optional;
import com.sk89q.worldedit.util.formatting.ColorCodeBuilder;
import com.sk89q.worldedit.util.formatting.Style;
@ -504,6 +509,24 @@ public class UtilityCommands {
player.print("Marked " + removed + " entit(ies) for removal.");
}
@Command(
aliases = { "/calc", "/calculate", "/eval", "/evaluate", "/solve" },
usage = "<expression>",
desc = "Evaluate a mathematical expression"
)
public void calc(Actor actor, @Text String input) throws CommandException {
try {
Expression expression = Expression.compile(input);
actor.print("= " + expression.evaluate());
} catch (EvaluationException e) {
actor.printError(String.format(
"'%s' could not be parsed as a valid expression", input));
} catch (ExpressionException e) {
actor.printError(String.format(
"'%s' could not be evaluated (error: %s)", input, e.getMessage()));
}
}
@Command(
aliases = { "/help" },
usage = "[<command>]",