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Utilities for serialization, commands, noise generation, IO, and some new data types.

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package personthecat.catlib.linting;

import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.minecraft.class_124;
import net.minecraft.class_2561;

public class StackTraceLinter extends SyntaxLinter {

    private static final Pattern AT_PATTERN = Pattern.compile("\\bat\\s", Pattern.MULTILINE);
    private static final Pattern PACKAGE_PATTERN = Pattern.compile("(?<=\\s)[a-z]+(\\.[a-z]+)+(?=\\.)", Pattern.MULTILINE);
    private static final Pattern METHOD_PATTERN = Pattern.compile("[\\w$]+(?=\\()", Pattern.MULTILINE);
    private static final Pattern SPECIAL_METHOD_PATTERN = Pattern.compile("(|)(?=\\()", Pattern.MULTILINE);
    private static final Pattern LINE_PATTERN = Pattern.compile("(?<=\\()(\\w+\\.\\w+:\\d+)(?=\\))", Pattern.MULTILINE);
    private static final Pattern MESSAGE_PATTERN = Pattern.compile(":\\s(.+)", Pattern.MULTILINE);

    private static final Highlighter[] HIGHLIGHTERS = {
        new RegexHighlighter(AT_PATTERN, color(class_124.field_1077)),
        new RegexHighlighter(PACKAGE_PATTERN, color(class_124.field_1080)),
        new RegexHighlighter(METHOD_PATTERN, color(class_124.field_1065).method_10978(true)),
        new RegexHighlighter(SPECIAL_METHOD_PATTERN, color(class_124.field_1065).method_10978(true).method_10982(true)),
        new RegexHighlighter(LINE_PATTERN, color(class_124.field_1064).method_27706(class_124.field_1073)),
        new RegexHighlighter(MESSAGE_PATTERN, color(class_124.field_1061))
    };

    public static final StackTraceLinter INSTANCE = new StackTraceLinter();

    private StackTraceLinter() {
        super(HIGHLIGHTERS);
    }

    public static class_2561 format(final String stacktrace) {
        return INSTANCE.lint(collapsePackages(stacktrace));
    }

    private static String collapsePackages(final String stacktrace) {
        final StringBuilder sb = new StringBuilder(stacktrace.length());
        final Matcher matcher = PACKAGE_PATTERN.matcher(stacktrace);

        int end = 0;
        while (matcher.find()) {
            sb.append(stacktrace, end, matcher.start());

            final String match = matcher.group(0);
            final String[] packs = match.split("\\.");
            sb.append(packs[0].charAt(0));

            for (int i = 1; i < packs.length; i++) {
                sb.append('.').append(packs[i].charAt(0));
            }
            end = matcher.end();
        }
        if (end > 0) {
            sb.append(stacktrace, end, stacktrace.length());
        }

        return sb.toString();
    }
}