Quiet parquet compressor warnings

5-Applications/parquet_compressor/src/compressor.rs

@@ -1,6 +1,6 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
-use serde_json::json;
 use byteorder::{BigEndian, ByteOrder};
+use serde_json::json;
 
 pub struct Compressor;
 
@@ -29,6 +29,7 @@ impl Compressor {
         Ok(result)
     }
 
+    #[allow(dead_code)]
     pub fn decompress(compressed_data: &[u8]) -> anyhow::Result<Vec<u8>> {
         if compressed_data.len() < 4 {
             return Err(anyhow::anyhow!("Data too short"));
@@ -39,19 +40,21 @@ impl Compressor {
             return Err(anyhow::anyhow!("Data too short for header"));
         }
 
-        let header_bytes = &compressed_data[4..4+header_len];
+        let header_bytes = &compressed_data[4..4 + header_len];
         let header: serde_json::Value = serde_json::from_slice(header_bytes)?;
 
-        let encoded_data = &compressed_data[4+header_len..];
+        let encoded_data = &compressed_data[4 + header_len..];
 
         let mut state = ManifoldState::new(Vec::new());
         state.encoded = encoded_data.to_vec();
-        state.shifter_chain = header["chain"].as_array()
+        state.shifter_chain = header["chain"]
+            .as_array()
             .unwrap_or(&vec![])
             .iter()
             .map(|v| v.as_str().unwrap().to_string())
             .collect();
-        state.metadata = header["metadata"].as_object()
+        state.metadata = header["metadata"]
+            .as_object()
             .unwrap_or(&serde_json::Map::new())
             .iter()
             .map(|(k, v)| (k.clone(), v.clone()))

5-Applications/parquet_compressor/src/gpu.rs

@@ -1,5 +1,5 @@
-use wgpu::util::DeviceExt;
 use std::borrow::Cow;
+use wgpu::util::DeviceExt;
 
 pub struct GpuContext {
     pub device: wgpu::Device,
@@ -11,22 +11,31 @@ pub struct GpuContext {
 impl GpuContext {
     pub async fn new() -> anyhow::Result<Self> {
         let instance = wgpu::Instance::default();
-        let adapter = instance.request_adapter(&wgpu::RequestAdapterOptions {
+        let adapter = instance
-            power_preference: wgpu::PowerPreference::HighPerformance,
+            .request_adapter(&wgpu::RequestAdapterOptions {
-            compatible_surface: None,
+                power_preference: wgpu::PowerPreference::HighPerformance,
-            force_fallback_adapter: false,
+                compatible_surface: None,
-        }).await.ok_or_else(|| anyhow::anyhow!("No adapter found"))?;
+                force_fallback_adapter: false,
+            })
+            .await
+            .ok_or_else(|| anyhow::anyhow!("No adapter found"))?;
 
         let mut limits = wgpu::Limits::default();
         limits.max_storage_buffer_binding_size = adapter.limits().max_storage_buffer_binding_size;
         limits.max_buffer_size = adapter.limits().max_buffer_size;
-        limits.max_compute_invocations_per_workgroup = adapter.limits().max_compute_invocations_per_workgroup;
+        limits.max_compute_invocations_per_workgroup =
+            adapter.limits().max_compute_invocations_per_workgroup;
 
-        let (device, queue) = adapter.request_device(&wgpu::DeviceDescriptor {
+        let (device, queue) = adapter
-            label: None,
+            .request_device(
-            required_features: wgpu::Features::empty(),
+                &wgpu::DeviceDescriptor {
-            required_limits: limits,
+                    label: None,
-        }, None).await?;
+                    required_features: wgpu::Features::empty(),
+                    required_limits: limits,
+                },
+                None,
+            )
+            .await?;
 
         let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
             label: Some("XOR Shader"),
@@ -72,7 +81,12 @@ impl GpuContext {
             entry_point: "main",
         });
 
-        Ok(Self { device, queue, pipeline, bind_group_layout })
+        Ok(Self {
+            device,
+            queue,
+            pipeline,
+            bind_group_layout,
+        })
     }
 
     pub fn run_xor_transform(&self, data: &[u8], _key: u8) -> anyhow::Result<Vec<u8>> {
@@ -80,16 +94,20 @@ impl GpuContext {
         let mut padded_data = vec![0u8; padded_len];
         padded_data[..data.len()].copy_from_slice(data);
 
-        let input_buffer = self.device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+        let input_buffer = self
-            label: Some("Input Buffer"),
+            .device
-            contents: bytemuck::cast_slice(&padded_data),
+            .create_buffer_init(&wgpu::util::BufferInitDescriptor {
-            usage: wgpu::BufferUsages::STORAGE | wgpu::BufferUsages::COPY_SRC,
+                label: Some("Input Buffer"),
-        });
+                contents: bytemuck::cast_slice(&padded_data),
+                usage: wgpu::BufferUsages::STORAGE | wgpu::BufferUsages::COPY_SRC,
+            });
 
         let output_buffer = self.device.create_buffer(&wgpu::BufferDescriptor {
             label: Some("Output Buffer"),
             size: padded_len as u64,
-            usage: wgpu::BufferUsages::STORAGE | wgpu::BufferUsages::COPY_SRC | wgpu::BufferUsages::COPY_DST,
+            usage: wgpu::BufferUsages::STORAGE
+                | wgpu::BufferUsages::COPY_SRC
+                | wgpu::BufferUsages::COPY_DST,
             mapped_at_creation: false,
         });
 
@@ -115,9 +133,14 @@ impl GpuContext {
             ],
         });
 
-        let mut encoder = self.device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
+        let mut encoder = self
+            .device
+            .create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
         {
-            let mut compute_pass = encoder.begin_compute_pass(&wgpu::ComputePassDescriptor { label: None, timestamp_writes: None });
+            let mut compute_pass = encoder.begin_compute_pass(&wgpu::ComputePassDescriptor {
+                label: None,
+                timestamp_writes: None,
+            });
             compute_pass.set_pipeline(&self.pipeline);
             compute_pass.set_bind_group(0, &bind_group, &[]);
 

5-Applications/parquet_compressor/src/main.rs

@@ -1,27 +1,35 @@
-mod gpu;
-mod shifters;
 mod compressor;
+mod gpu;
 mod parquet_handler;
+mod shifters;
 
-use std::path::{Path, PathBuf};
-use std::sync::{Arc, Mutex};
-use clap::Parser;
-use rayon::prelude::*;
-use indicatif::{ProgressBar, ProgressStyle};
-use tokio::sync::Semaphore;
-use sysinfo::System;
-use serde_json::json;
-use crate::shifters::get_shifter;
 use crate::compressor::Compressor;
 use crate::gpu::GpuContext;
+use crate::shifters::{get_shifter, intrinsic_load};
+use clap::Parser;
+use indicatif::{ProgressBar, ProgressStyle};
+use rayon::prelude::*;
+use serde_json::json;
+use std::path::{Path, PathBuf};
+use std::sync::{Arc, Mutex};
+use sysinfo::System;
+use tokio::sync::Semaphore;
 
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]
 struct Args {
-    #[arg(short, long, default_value = "3-Mathematical-Models/equations_parquet_tagged")]
+    #[arg(
+        short,
+        long,
+        default_value = "3-Mathematical-Models/equations_parquet_tagged"
+    )]
     input_dir: String,
 
-    #[arg(short, long, default_value = "3-Mathematical-Models/equations_compressed")]
+    #[arg(
+        short,
+        long,
+        default_value = "3-Mathematical-Models/equations_compressed"
+    )]
     output_dir: String,
 
     #[arg(short, long, default_value_t = 8192)]
@@ -96,17 +104,25 @@ fn main() -> anyhow::Result<()> {
         pb.set_message(format!("Current: {}", fname));
 
         let sub_pb = mp.add(indicatif::ProgressBar::new_spinner());
-        sub_pb.set_style(indicatif::ProgressStyle::default_spinner()
+        sub_pb.set_style(
-            .template("{spinner:.yellow} {msg}")
+            indicatif::ProgressStyle::default_spinner()
-            .unwrap());
+                .template("{spinner:.yellow} {msg}")
+                .unwrap(),
+        );
         sub_pb.set_message(format!("Starting {}", fname));
         sub_pb.enable_steady_tick(std::time::Duration::from_millis(100));
 
-        match process_file_with_progress(file_path, &output_path, &stats, gpu_context.clone(), &sub_pb) {
+        match process_file_with_progress(
+            file_path,
+            &output_path,
+            &stats,
+            gpu_context.clone(),
+            &sub_pb,
+        ) {
             Ok(_) => {
                 pb.inc(1);
                 sub_pb.finish_and_clear();
-            },
+            }
             Err(e) => {
                 eprintln!("Error processing {}: {}", fname, e);
                 sub_pb.finish_with_message(format!("Failed: {}", fname));
@@ -150,7 +166,10 @@ fn main() -> anyhow::Result<()> {
     let index_path = output_path.join("index.json");
     std::fs::write(&index_path, serde_json::to_string_pretty(&index)?)?;
 
-    let parent_index = input_path.parent().unwrap().join("equations_NUVMAP_index.json");
+    let parent_index = input_path
+        .parent()
+        .unwrap()
+        .join("equations_NUVMAP_index.json");
     std::fs::copy(&index_path, parent_index)?;
 
     Ok(())
@@ -161,7 +180,7 @@ fn process_file_with_progress(
     output_dir: &Path,
     stats: &Arc<Mutex<Stats>>,
     gpu_context: Option<Arc<GpuContext>>,
-    pb: &ProgressBar
+    pb: &ProgressBar,
 ) -> anyhow::Result<()> {
     pb.set_message("Serializing Parquet...");
     let raw_data = parquet_handler::serialize_parquet_to_bytes(file_path)?;
@@ -185,9 +204,8 @@ fn process_file_with_progress(
 
     for (name, chain) in chains {
         pb.set_message(format!("Trying chain: {}...", name));
-        let shifters: Vec<Box<dyn crate::shifters::Shifter>> = chain.iter()
+        let shifters: Vec<Box<dyn crate::shifters::Shifter>> =
-            .map(|s| get_shifter(s).unwrap())
+            chain.iter().map(|s| get_shifter(s).unwrap()).collect();
-            .collect();
 
         if let Ok(compressed) = Compressor::compress(data_to_compress.clone(), shifters) {
             let ratio = raw_len as f64 / compressed.len().max(1) as f64;
@@ -211,6 +229,7 @@ fn process_file_with_progress(
         "name": fname,
         "raw_bytes": raw_len,
         "compressed_bytes": best_data.len(),
+        "raw_intrinsic_load": intrinsic_load(&data_to_compress),
         "ratio": best_ratio,
         "chain": best_chain_name,
     }));

5-Applications/parquet_compressor/src/math_self_discover.rs

@@ -1,4 +1,5 @@
 use anyhow::{Context, Result};
+use arrow::array::Array;
 use arrow::array::StringArray;
 use arrow::datatypes::{DataType, Field, Schema};
 use arrow::record_batch::RecordBatch;
@@ -7,18 +8,17 @@ use dashmap::DashMap;
 use indicatif::{ProgressBar, ProgressStyle};
 use parquet::arrow::arrow_reader::ParquetRecordBatchReaderBuilder;
 use parquet::arrow::ArrowWriter;
-use rayon::ThreadPoolBuilder;
 use rayon::iter::{IntoParallelIterator, ParallelIterator};
+use rayon::ThreadPoolBuilder;
 use regex::Regex;
 use serde::Serialize;
-use arrow::array::Array;
 use std::collections::HashMap;
 use std::fs::{self, File};
 use std::io::{BufRead, BufReader, Write};
 use std::path::PathBuf;
 use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::{Arc, Mutex};
-use sysinfo::{System, RefreshKind, CpuRefreshKind, MemoryRefreshKind};
+use sysinfo::{CpuRefreshKind, MemoryRefreshKind, RefreshKind, System};
 
 // ── CLI ──────────────────────────────────────────────────────────────────────
 
@@ -27,15 +27,26 @@ use sysinfo::{System, RefreshKind, CpuRefreshKind, MemoryRefreshKind};
 #[command(about = "Unsupervised structural taxonomy from naked equations.")]
 struct Config {
     /// Input parquet (math-raw)
-    #[arg(short, long, default_value = "/home/allaun/Documents/Research Stack/3-Mathematical-Models/equations_parquet_tagged/equations_math_raw.parquet")]
+    #[arg(
+        short,
+        long,
+        default_value = "/home/allaun/Documents/Research Stack/3-Mathematical-Models/equations_parquet_tagged/equations_math_raw.parquet"
+    )]
     input: String,
 
     /// Output JSON report
-    #[arg(short, long, default_value = "/home/allaun/Documents/Research Stack/3-Mathematical-Models/math_self_discovered.json")]
+    #[arg(
+        short,
+        long,
+        default_value = "/home/allaun/Documents/Research Stack/3-Mathematical-Models/math_self_discovered.json"
+    )]
     report: String,
 
     /// Output parquet with cluster assignments
-    #[arg(long, default_value = "/home/allaun/Documents/Research Stack/3-Mathematical-Models/equations_parquet_tagged/equations_self_clustered.parquet")]
+    #[arg(
+        long,
+        default_value = "/home/allaun/Documents/Research Stack/3-Mathematical-Models/equations_parquet_tagged/equations_self_clustered.parquet"
+    )]
     clustered: String,
 
     /// Max CPU threads (0 = num_cpus / 2)
@@ -100,7 +111,8 @@ impl ResourceMonitor {
                 .with_memory(MemoryRefreshKind::everything()),
         );
 
-        let cpu_usage: f32 = sys.cpus().iter().map(|c| c.cpu_usage()).sum::<f32>() / sys.cpus().len() as f32;
+        let cpu_usage: f32 =
+            sys.cpus().iter().map(|c| c.cpu_usage()).sum::<f32>() / sys.cpus().len() as f32;
         let mem_usage = sys.used_memory() as f32 / sys.total_memory() as f32 * 100.0;
 
         let ok = cpu_usage < self.cpu_threshold && mem_usage < self.memory_threshold;
@@ -304,8 +316,8 @@ impl FingerprintEngine {
 
         // Multi-letter identifiers
         let math_funcs: std::collections::HashSet<&str> = [
-            "sin", "cos", "tan", "exp", "log", "ln", "sqrt", "det", "tr",
+            "sin", "cos", "tan", "exp", "log", "ln", "sqrt", "det", "tr", "dim", "ker", "rank",
-            "dim", "ker", "rank", "span", "frac", "sum", "prod", "int",
+            "span", "frac", "sum", "prod", "int",
         ]
         .iter()
         .copied()
@@ -343,14 +355,6 @@ impl FingerprintEngine {
 
         text
     }
-
-    /// SIMD-friendly batch surface: process a slice of equations as a data-parallel array.
-    /// The compiler auto-vectorizes the hot loops across each equation's byte slice.
-    fn fingerprint_batch(&self, eqs: &[String]) -> Vec<String> {
-        eqs.iter()
-            .map(|eq| self.fingerprint(eq))
-            .collect()
-    }
 }
 
 // ── Clustering ───────────────────────────────────────────────────────────────
@@ -377,7 +381,11 @@ fn main() -> Result<()> {
 
     // ── Resource-aware thread pool ───────────────────────────────────────────
     let n_cpus = std::thread::available_parallelism()?.get();
-    let threads = if config.threads == 0 { n_cpus / 2 } else { config.threads };
+    let threads = if config.threads == 0 {
+        n_cpus / 2
+    } else {
+        config.threads
+    };
     let threads = threads.max(1);
 
     eprintln!("════════════════════════════════════════════════════════════");
@@ -387,7 +395,14 @@ fn main() -> Result<()> {
     eprintln!("  Batch size: {}", config.batch_size);
     eprintln!("  CPU threshold: {}%", config.cpu_threshold);
     eprintln!("  Memory threshold: {}%", config.memory_threshold);
-    eprintln!("  Cache dir: {}", if config.cache_dir.is_empty() { "default" } else { &config.cache_dir });
+    eprintln!(
+        "  Cache dir: {}",
+        if config.cache_dir.is_empty() {
+            "default"
+        } else {
+            &config.cache_dir
+        }
+    );
     eprintln!("════════════════════════════════════════════════════════════");
 
     ThreadPoolBuilder::new()
@@ -395,15 +410,18 @@ fn main() -> Result<()> {
         .build_global()
         .context("failed to build thread pool")?;
 
-    let monitor = Arc::new(ResourceMonitor::new(config.cpu_threshold, config.memory_threshold));
+    let monitor = Arc::new(ResourceMonitor::new(
+        config.cpu_threshold,
+        config.memory_threshold,
+    ));
 
     // ── Cache manager ──────────────────────────────────────────────────────────
     let cache = Arc::new(CacheManager::new(&config.cache_dir, config.ram_cache_cap)?);
 
     // ── Open input + output (stream copy) ────────────────────────────────────
     eprintln!("\nOpening input parquet...");
-    let file = File::open(&config.input)
+    let file =
-        .with_context(|| format!("failed to open {}", config.input))?;
+        File::open(&config.input).with_context(|| format!("failed to open {}", config.input))?;
     let builder = ParquetRecordBatchReaderBuilder::try_new(file)?;
     let total_rows = builder.metadata().file_metadata().num_rows() as u64;
     eprintln!("  Total rows: {}", total_rows);
@@ -463,9 +481,7 @@ fn main() -> Result<()> {
             .and_then(|c| c.as_any().downcast_ref::<StringArray>());
 
         // Build equation strings for cache/SIMD surface
-        let eqs: Vec<String> = (0..n)
+        let eqs: Vec<String> = (0..n).map(|i| eq_col.value(i).to_string()).collect();
-            .map(|i| eq_col.value(i).to_string())
-            .collect();
 
         // Fingerprint via cache-first SIMD batch surface
         let fingerprints: Vec<String> = eqs
@@ -543,7 +559,10 @@ fn main() -> Result<()> {
 
     // ── Cache stats ──────────────────────────────────────────────────────────
     let (cache_entries, hits, misses) = cache.stats();
-    eprintln!("  Cache: {} entries, {} hits, {} misses", cache_entries, hits, misses);
+    eprintln!(
+        "  Cache: {} entries, {} hits, {} misses",
+        cache_entries, hits, misses
+    );
     eprintln!("  Flushing cache to disk...");
     cache.flush_to_disk()?;
     eprintln!("  Cache flushed to: {}", cache.disk_path.display());

5-Applications/parquet_compressor/src/parquet_handler.rs

@@ -1,8 +1,8 @@
-use std::fs::File;
-use std::path::Path;
 use parquet::file::reader::{FileReader, SerializedFileReader};
 use parquet::record::RowAccessor;
 use serde_json::json;
+use std::fs::File;
+use std::path::Path;
 
 pub fn serialize_parquet_to_bytes(path: &Path) -> anyhow::Result<Vec<u8>> {
     let file = File::open(path)?;

5-Applications/parquet_compressor/src/shifters/bwt.rs

@@ -1,14 +1,20 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
-use serde_json::json;
 use divsufsort::sort_in_place;
+use serde_json::json;
 
 pub struct BWTShifter;
 
 impl Shifter for BWTShifter {
-    fn name(&self) -> &'static str { "bwt" }
+    fn name(&self) -> &'static str {
+        "bwt"
+    }
 
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
-        let data = if !state.encoded.is_empty() { &state.encoded } else { &state.raw_bytes };
+        let data = if !state.encoded.is_empty() {
+            &state.encoded
+        } else {
+            &state.raw_bytes
+        };
         if data.is_empty() {
             state.update(Vec::new(), self.name(), json!({"primary_index": 0}));
             return Ok(());
@@ -41,10 +47,19 @@ impl Shifter for BWTShifter {
 
     fn decode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
         let data = &state.encoded;
-        if data.is_empty() { return Ok(()); }
+        if data.is_empty() {
+            return Ok(());
+        }
 
-        let meta = state.metadata.get(self.name()).cloned().unwrap_or(json!({}));
+        let meta = state
-        let primary_index = meta.get("primary_index").and_then(|v| v.as_u64()).unwrap_or(0) as usize;
+            .metadata
+            .get(self.name())
+            .cloned()
+            .unwrap_or(json!({}));
+        let primary_index = meta
+            .get("primary_index")
+            .and_then(|v| v.as_u64())
+            .unwrap_or(0) as usize;
 
         let n = data.len();
 

5-Applications/parquet_compressor/src/shifters/delta_gcl.rs

@@ -1,14 +1,20 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
-use serde_json::json;
 use byteorder::{BigEndian, ByteOrder};
+use serde_json::json;
 
 pub struct DeltaGCLShifter;
 
 impl Shifter for DeltaGCLShifter {
-    fn name(&self) -> &'static str { "delta_gcl" }
+    fn name(&self) -> &'static str {
+        "delta_gcl"
+    }
 
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
-        let data = if !state.encoded.is_empty() { &state.encoded } else { &state.raw_bytes };
+        let data = if !state.encoded.is_empty() {
+            &state.encoded
+        } else {
+            &state.raw_bytes
+        };
         let chunk_size = 4096;
         if data.is_empty() {
             state.update(Vec::new(), self.name(), json!({}));
@@ -68,17 +74,23 @@ impl Shifter for DeltaGCLShifter {
 
     fn decode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
         let data = &state.encoded;
-        if data.len() < 4 { return Ok(()); }
+        if data.len() < 4 {
+            return Ok(());
+        }
 
         let n_chunks = BigEndian::read_u32(&data[0..4]) as usize;
         let mut ptr = 4;
 
-        if ptr + 4 > data.len() { return Ok(()); }
+        if ptr + 4 > data.len() {
-        let first_len = BigEndian::read_u32(&data[ptr..ptr+4]) as usize;
+            return Ok(());
+        }
+        let first_len = BigEndian::read_u32(&data[ptr..ptr + 4]) as usize;
         ptr += 4;
 
-        if ptr + first_len > data.len() { return Ok(()); }
+        if ptr + first_len > data.len() {
-        let first_chunk = data[ptr..ptr+first_len].to_vec();
+            return Ok(());
+        }
+        let first_chunk = data[ptr..ptr + first_len].to_vec();
         ptr += first_len;
 
         let mut result = Vec::new();
@@ -87,19 +99,25 @@ impl Shifter for DeltaGCLShifter {
         let mut prev = first_chunk;
 
         for _ in 1..n_chunks {
-            if ptr + 4 > data.len() { break; }
+            if ptr + 4 > data.len() {
-            let rle_len = BigEndian::read_u32(&data[ptr..ptr+4]) as usize;
+                break;
+            }
+            let rle_len = BigEndian::read_u32(&data[ptr..ptr + 4]) as usize;
             ptr += 4;
 
-            if ptr + rle_len > data.len() { break; }
+            if ptr + rle_len > data.len() {
-            let rle_data = &data[ptr..ptr+rle_len];
+                break;
+            }
+            let rle_data = &data[ptr..ptr + rle_len];
             ptr += rle_len;
 
             let mut delta = Vec::new();
             for j in (0..rle_data.len()).step_by(2) {
-                if j + 1 >= rle_data.len() { break; }
+                if j + 1 >= rle_data.len() {
+                    break;
+                }
                 let count = rle_data[j] as usize;
-                let b = rle_data[j+1];
+                let b = rle_data[j + 1];
                 for _ in 0..count {
                     delta.push(b);
                 }

5-Applications/parquet_compressor/src/shifters/huffman.rs

@@ -1,14 +1,20 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
 use serde_json::json;
 
 pub struct HuffmanShifter;
 
 impl Shifter for HuffmanShifter {
-    fn name(&self) -> &'static str { "huffman" }
+    fn name(&self) -> &'static str {
+        "huffman"
+    }
 
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
         // TODO: Implement Huffman
-        let data = if !state.encoded.is_empty() { &state.encoded } else { &state.raw_bytes };
+        let data = if !state.encoded.is_empty() {
+            &state.encoded
+        } else {
+            &state.raw_bytes
+        };
         state.update(data.to_vec(), self.name(), json!({}));
         Ok(())
     }

5-Applications/parquet_compressor/src/shifters/lzw.rs

@@ -1,22 +1,29 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
+use byteorder::{BigEndian, ByteOrder};
 use serde_json::json;
 use std::collections::HashMap;
-use byteorder::{BigEndian, ByteOrder};
 
 pub struct LZWShifter;
 
 impl Shifter for LZWShifter {
-    fn name(&self) -> &'static str { "lzw" }
+    fn name(&self) -> &'static str {
+        "lzw"
+    }
 
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
-        let data = if !state.encoded.is_empty() { &state.encoded } else { &state.raw_bytes };
+        let data = if !state.encoded.is_empty() {
+            &state.encoded
+        } else {
+            &state.raw_bytes
+        };
         let max_dict = 4096;
         if data.is_empty() {
             state.update(Vec::new(), self.name(), json!({"max_dict": max_dict}));
             return Ok(());
         }
 
-        let mut dictionary: HashMap<Vec<u8>, u16> = (0..=255).map(|b| (vec![b], b as u16)).collect();
+        let mut dictionary: HashMap<Vec<u8>, u16> =
+            (0..=255).map(|b| (vec![b], b as u16)).collect();
         let mut next_code = 256u16;
         let mut result = Vec::new();
         let mut w = Vec::new();
@@ -52,9 +59,12 @@ impl Shifter for LZWShifter {
 
     fn decode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
         let data = &state.encoded;
-        if data.len() < 2 { return Ok(()); }
+        if data.len() < 2 {
+            return Ok(());
+        }
 
-        let mut dictionary: HashMap<u16, Vec<u8>> = (0..=255).map(|i| (i as u16, vec![i as u8])).collect();
+        let mut dictionary: HashMap<u16, Vec<u8>> =
+            (0..=255).map(|i| (i as u16, vec![i as u8])).collect();
         let mut next_code = 256u16;
         let mut result = Vec::new();
 
@@ -63,8 +73,10 @@ impl Shifter for LZWShifter {
         result.extend_from_slice(&s);
 
         for i in (2..data.len()).step_by(2) {
-            if i + 1 >= data.len() { break; }
+            if i + 1 >= data.len() {
-            let code = BigEndian::read_u16(&data[i..i+2]);
+                break;
+            }
+            let code = BigEndian::read_u16(&data[i..i + 2]);
 
             let entry = if let Some(v) = dictionary.get(&code) {
                 v.clone()

5-Applications/parquet_compressor/src/shifters/mod.rs

@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -31,24 +31,25 @@ impl ManifoldState {
 pub trait Shifter {
     fn name(&self) -> &'static str;
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()>;
+    #[allow(dead_code)]
     fn decode(&self, state: &mut ManifoldState) -> anyhow::Result<()>;
 }
 
 pub mod bwt;
-pub mod mtf;
-pub mod lzw;
-pub mod rle;
-pub mod huffman;
 pub mod delta_gcl;
+pub mod huffman;
+pub mod lzw;
+pub mod mtf;
 pub mod pist;
+pub mod rle;
 
 pub use bwt::BWTShifter;
-pub use mtf::MTFShifter;
-pub use lzw::LZWShifter;
-pub use rle::RunLengthShifter;
-pub use huffman::HuffmanShifter;
 pub use delta_gcl::DeltaGCLShifter;
+pub use huffman::HuffmanShifter;
+pub use lzw::LZWShifter;
+pub use mtf::MTFShifter;
 pub use pist::PISTShifter;
+pub use rle::RunLengthShifter;
 
 pub fn get_shifter(name: &str) -> Option<Box<dyn Shifter>> {
     match name {

5-Applications/parquet_compressor/src/shifters/mtf.rs

@@ -1,13 +1,19 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
 use serde_json::json;
 
 pub struct MTFShifter;
 
 impl Shifter for MTFShifter {
-    fn name(&self) -> &'static str { "mtf" }
+    fn name(&self) -> &'static str {
+        "mtf"
+    }
 
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
-        let data = if !state.encoded.is_empty() { &state.encoded } else { &state.raw_bytes };
+        let data = if !state.encoded.is_empty() {
+            &state.encoded
+        } else {
+            &state.raw_bytes
+        };
         let mut alphabet: Vec<u8> = (0..=255).collect();
         let mut result = Vec::with_capacity(data.len());
 

5-Applications/parquet_compressor/src/shifters/pist.rs

@@ -1,13 +1,19 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
 use serde_json::json;
 
 pub struct PISTShifter;
 
 impl Shifter for PISTShifter {
-    fn name(&self) -> &'static str { "pist" }
+    fn name(&self) -> &'static str {
+        "pist"
+    }
 
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
-        let data = if !state.encoded.is_empty() { &state.encoded } else { &state.raw_bytes };
+        let data = if !state.encoded.is_empty() {
+            &state.encoded
+        } else {
+            &state.raw_bytes
+        };
         let mut result = Vec::with_capacity(data.len() * 2);
 
         for &b in data {
@@ -26,9 +32,11 @@ impl Shifter for PISTShifter {
         let data = &state.encoded;
         let mut result = Vec::with_capacity(data.len() / 2);
         for i in (0..data.len()).step_by(2) {
-            if i + 1 >= data.len() { break; }
+            if i + 1 >= data.len() {
+                break;
+            }
             let k = data[i] as u64;
-            let t = data[i+1] as u64;
+            let t = data[i + 1] as u64;
             let n = k * k + t;
             result.push(n as u8);
         }

5-Applications/parquet_compressor/src/shifters/rle.rs

@@ -1,13 +1,19 @@
-use crate::shifters::{Shifter, ManifoldState};
+use crate::shifters::{ManifoldState, Shifter};
 use serde_json::json;
 
 pub struct RunLengthShifter;
 
 impl Shifter for RunLengthShifter {
-    fn name(&self) -> &'static str { "run_length" }
+    fn name(&self) -> &'static str {
+        "run_length"
+    }
 
     fn encode(&self, state: &mut ManifoldState) -> anyhow::Result<()> {
-        let data = if !state.encoded.is_empty() { &state.encoded } else { &state.raw_bytes };
+        let data = if !state.encoded.is_empty() {
+            &state.encoded
+        } else {
+            &state.raw_bytes
+        };
         let mut result = Vec::new();
         let mut i = 0;
         while i < data.len() {
@@ -22,7 +28,11 @@ impl Shifter for RunLengthShifter {
         }
 
         let ratio = data.len() as f64 / result.len().max(1) as f64;
-        state.update(result, self.name(), json!({"original": data.len(), "ratio": ratio}));
+        state.update(
+            result,
+            self.name(),
+            json!({"original": data.len(), "ratio": ratio}),
+        );
         Ok(())
     }
 
@@ -30,9 +40,11 @@ impl Shifter for RunLengthShifter {
         let data = &state.encoded;
         let mut result = Vec::new();
         for i in (0..data.len()).step_by(2) {
-            if i + 1 >= data.len() { break; }
+            if i + 1 >= data.len() {
+                break;
+            }
             let count = data[i] as usize;
-            let b = data[i+1];
+            let b = data[i + 1];
             for _ in 0..count {
                 result.push(b);
             }