// Multi-pattern matching implementation
// This will be used to create the final multi_pattern.rs
// Target: ~2500 lines

use crate::ast::{TermId, TermKind, TermManager};
use crate::ematching::pattern::{Pattern, PatternKind};
use crate::ematching::substitution::{Substitution, SubstitutionBuilder};
use crate::error::{OxizError, Result};
use crate::sort::SortId;
use lasso::Spur;
use rustc_hash::{FxHashMap, FxHashSet};
use smallvec::SmallVec;
use std::fmt;

/// Configuration for multi-pattern matching
#[derive(Debug, Clone)]
pub struct MultiPatternConfig {
    /// Maximum number of patterns per quantifier
    pub max_patterns: usize,
    /// Whether to enable pattern caching
    pub enable_caching: bool,
    /// Whether to use shared structure optimization
    pub use_shared_structure: bool,
    /// Maximum cache size
    pub max_cache_size: usize,
}

impl Default for MultiPatternConfig {
    fn default() -> Self {
        Self {
            max_patterns: 5,
            enable_caching: true,
            use_shared_structure: true,
            max_cache_size: 10000,
        }
    }
}

/// Statistics for multi-pattern matching
#[derive(Debug, Clone, Default)]
pub struct MultiPatternStats {
    /// Total patterns processed
    pub patterns_processed: usize,
    /// Multi-pattern matches found
    pub multi_matches: usize,
    /// Single-pattern matches found
    pub single_matches: usize,
    /// Cache hits
    pub cache_hits: usize,
    /// Cache misses
    pub cache_misses: usize,
    /// Average patterns per match
    pub avg_patterns_per_match: f64,
}

// Add many more comprehensive structures and implementations here...
// (This template shows the structure; the actual file will have full implementation)
