minecraft-src/net/minecraft/CrashReportCategory.java

package net.minecraft;

import com.google.common.collect.Lists;
import java.util.List;
import java.util.Locale;
import net.minecraft.core.BlockPos;
import net.minecraft.core.SectionPos;
import net.minecraft.world.level.LevelHeightAccessor;
import net.minecraft.world.level.block.state.BlockState;
import org.jetbrains.annotations.Nullable;

public class CrashReportCategory {
	private final String title;
	private final List<CrashReportCategory.Entry> entries = Lists.<CrashReportCategory.Entry>newArrayList();
	private StackTraceElement[] stackTrace = new StackTraceElement[0];

	public CrashReportCategory(String title) {
		this.title = title;
	}

	public static String formatLocation(LevelHeightAccessor levelHeightAccessor, double x, double y, double z) {
		return String.format(Locale.ROOT, "%.2f,%.2f,%.2f - %s", x, y, z, formatLocation(levelHeightAccessor, BlockPos.containing(x, y, z)));
	}

	public static String formatLocation(LevelHeightAccessor levelHeightAccessor, BlockPos pos) {
		return formatLocation(levelHeightAccessor, pos.getX(), pos.getY(), pos.getZ());
	}

	public static String formatLocation(LevelHeightAccessor levelHeightAccessor, int x, int y, int z) {
		StringBuilder stringBuilder = new StringBuilder();

		try {
			stringBuilder.append(String.format(Locale.ROOT, "World: (%d,%d,%d)", x, y, z));
		} catch (Throwable var19) {
			stringBuilder.append("(Error finding world loc)");
		}

		stringBuilder.append(", ");

		try {
			int i = SectionPos.blockToSectionCoord(x);
			int j = SectionPos.blockToSectionCoord(y);
			int k = SectionPos.blockToSectionCoord(z);
			int l = x & 15;
			int m = y & 15;
			int n = z & 15;
			int o = SectionPos.sectionToBlockCoord(i);
			int p = levelHeightAccessor.getMinY();
			int q = SectionPos.sectionToBlockCoord(k);
			int r = SectionPos.sectionToBlockCoord(i + 1) - 1;
			int s = levelHeightAccessor.getMaxY();
			int t = SectionPos.sectionToBlockCoord(k + 1) - 1;
			stringBuilder.append(
				String.format(Locale.ROOT, "Section: (at %d,%d,%d in %d,%d,%d; chunk contains blocks %d,%d,%d to %d,%d,%d)", l, m, n, i, j, k, o, p, q, r, s, t)
			);
		} catch (Throwable var18) {
			stringBuilder.append("(Error finding chunk loc)");
		}

		stringBuilder.append(", ");

		try {
			int i = x >> 9;
			int j = z >> 9;
			int k = i << 5;
			int l = j << 5;
			int m = (i + 1 << 5) - 1;
			int n = (j + 1 << 5) - 1;
			int o = i << 9;
			int p = levelHeightAccessor.getMinY();
			int q = j << 9;
			int r = (i + 1 << 9) - 1;
			int s = levelHeightAccessor.getMaxY();
			int t = (j + 1 << 9) - 1;
			stringBuilder.append(
				String.format(Locale.ROOT, "Region: (%d,%d; contains chunks %d,%d to %d,%d, blocks %d,%d,%d to %d,%d,%d)", i, j, k, l, m, n, o, p, q, r, s, t)
			);
		} catch (Throwable var17) {
			stringBuilder.append("(Error finding world loc)");
		}

		return stringBuilder.toString();
	}

	/**
	 * Adds a section to this crash report category, resolved by calling the given callable.
	 * 
	 * If the given callable throws an exception, a detail containing that exception will be created instead.
	 */
	public CrashReportCategory setDetail(String name, CrashReportDetail<String> detail) {
		try {
			this.setDetail(name, detail.call());
		} catch (Throwable var4) {
			this.setDetailError(name, var4);
		}

		return this;
	}

	/**
	 * Adds a Crashreport section with the given name with the given value (converted {@code .toString()})
	 */
	public CrashReportCategory setDetail(String sectionName, Object value) {
		this.entries.add(new CrashReportCategory.Entry(sectionName, value));
		return this;
	}

	/**
	 * Adds a Crashreport section with the given name with the given Throwable
	 */
	public void setDetailError(String sectionName, Throwable throwable) {
		this.setDetail(sectionName, throwable);
	}

	/**
	 * Resets our stack trace according to the current trace, pruning the deepest 3 entries.  The parameter indicates how many additional deepest entries to prune.  Returns the number of entries in the resulting pruned stack trace.
	 */
	public int fillInStackTrace(int size) {
		StackTraceElement[] stackTraceElements = Thread.currentThread().getStackTrace();
		if (stackTraceElements.length <= 0) {
			return 0;
		} else {
			this.stackTrace = new StackTraceElement[stackTraceElements.length - 3 - size];
			System.arraycopy(stackTraceElements, 3 + size, this.stackTrace, 0, this.stackTrace.length);
			return this.stackTrace.length;
		}
	}

	/**
	 * Do the deepest two elements of our saved stack trace match the given elements, in order from the deepest?
	 */
	public boolean validateStackTrace(StackTraceElement s1, StackTraceElement s2) {
		if (this.stackTrace.length != 0 && s1 != null) {
			StackTraceElement stackTraceElement = this.stackTrace[0];
			if (stackTraceElement.isNativeMethod() == s1.isNativeMethod()
				&& stackTraceElement.getClassName().equals(s1.getClassName())
				&& stackTraceElement.getFileName().equals(s1.getFileName())
				&& stackTraceElement.getMethodName().equals(s1.getMethodName())) {
				if (s2 != null != this.stackTrace.length > 1) {
					return false;
				} else if (s2 != null && !this.stackTrace[1].equals(s2)) {
					return false;
				} else {
					this.stackTrace[0] = s1;
					return true;
				}
			} else {
				return false;
			}
		} else {
			return false;
		}
	}

	/**
	 * Removes the given number entries from the bottom of the stack trace.
	 */
	public void trimStacktrace(int amount) {
		StackTraceElement[] stackTraceElements = new StackTraceElement[this.stackTrace.length - amount];
		System.arraycopy(this.stackTrace, 0, stackTraceElements, 0, stackTraceElements.length);
		this.stackTrace = stackTraceElements;
	}

	public void getDetails(StringBuilder builder) {
		builder.append("-- ").append(this.title).append(" --\n");
		builder.append("Details:");

		for (CrashReportCategory.Entry entry : this.entries) {
			builder.append("\n\t");
			builder.append(entry.getKey());
			builder.append(": ");
			builder.append(entry.getValue());
		}

		if (this.stackTrace != null && this.stackTrace.length > 0) {
			builder.append("\nStacktrace:");

			for (StackTraceElement stackTraceElement : this.stackTrace) {
				builder.append("\n\tat ");
				builder.append(stackTraceElement);
			}
		}
	}

	public StackTraceElement[] getStacktrace() {
		return this.stackTrace;
	}

	public static void populateBlockDetails(CrashReportCategory category, LevelHeightAccessor levelHeightAccessor, BlockPos pos, BlockState state) {
		category.setDetail("Block", state::toString);
		populateBlockLocationDetails(category, levelHeightAccessor, pos);
	}

	public static CrashReportCategory populateBlockLocationDetails(CrashReportCategory category, LevelHeightAccessor levelHeightAccessor, BlockPos pos) {
		return category.setDetail("Block location", (CrashReportDetail<String>)(() -> formatLocation(levelHeightAccessor, pos)));
	}

	static class Entry {
		private final String key;
		private final String value;

		public Entry(String key, @Nullable Object value) {
			this.key = key;
			if (value == null) {
				this.value = "~~NULL~~";
			} else if (value instanceof Throwable throwable) {
				this.value = "~~ERROR~~ " + throwable.getClass().getSimpleName() + ": " + throwable.getMessage();
			} else {
				this.value = value.toString();
			}
		}

		public String getKey() {
			return this.key;
		}

		public String getValue() {
			return this.value;
		}
	}
}