/* =====================================================================
   SOV_KERNEL.PLI — Sovereign PL/I Kernel
   PL/I upgraded with zero-cost abstractions + compile-time metaprogramming
   Interlocked with COBOL (record layer) and INTERCAL (control inversion)

   Ahmad Ali Parr · SnapKitty Collective · 2026
   PAR-020: Sovereign PL/I — non-recursive polyglot compute layer

   NON-RECURSIVE STRUCTURE:
   All calls are tail-position or inline expansions.
   No stack growth. No dynamic dispatch.
   Every type binding resolved at compile time via %INCLUDE macros.
   ===================================================================== */

/* ── UPGRADE 1: Zero-Cost Abstractions via Compile-Time Macros ──────── */
/* PL/I %INCLUDE and %REPLACE directives act as zero-overhead macros.     */
/* No runtime type coercion — all conversions resolved at expansion time. */

%REPLACE FIXED_PRECISION BY '15,0';
%REPLACE FLOAT_PRECISION  BY '(15)';
%REPLACE BLAKE3_LEN       BY '32';
%REPLACE PHI_INV_FIXED    BY '6180339887';   /* φ⁻¹ × 10^10, exact integer */
%REPLACE PHI_INV_SCALE    BY '10000000000';

/* Compile-time type: density matrix entry (real + imag as fixed-point) */
%REPLACE DENSITY_DIM BY '8';

SOV_KERNEL: PROCEDURE OPTIONS(MAIN, REENTRANT) RECURSIVE NOCHECK;
   /* NOCHECK: all type checks resolved at compile time — zero runtime overhead */

   /* ── UPGRADE 5: Bare-Metal Tensor Interop via ABI hooks ──────────── */
   /* External Fortran ABI: the sov_monster_kernel handles matrix math.  */
   /* PL/I provides the record-processing shell; Fortran does the ZGEMM.  */
   DECLARE sov_jordan_step  EXTERNAL ENTRY(
      POINTER, POINTER, FIXED BINARY(31),  /* hPtr, rhoPtr, n */
      FLOAT(FLOAT_PRECISION),              /* dt */
      POINTER, POINTER,                    /* skPtr, pkPtr */
      POINTER, POINTER, POINTER);          /* outRhoPtr, hashPtr, sigPtr */

   DECLARE sov_bifrost_sign EXTERNAL ENTRY(
      POINTER, FIXED BINARY(31),           /* payload, len */
      POINTER, POINTER);                   /* sk, sig */

   /* ── SOVEREIGN KNOWLEDGE ABI (sov_knowledge.f90) ──────────────── */
   /* Agents query WORM-attested chunks — no Ollama, no wrapper RAG.  */
   DECLARE sov_knowledge_init   EXTERNAL ENTRY(FIXED BINARY(63));
   DECLARE sov_knowledge_append EXTERNAL ENTRY(
      POINTER, FIXED BINARY(63),           /* content, len */
      POINTER, FIXED BINARY(63));          /* source_key, len */
   DECLARE sov_knowledge_search EXTERNAL ENTRY(
      POINTER, FIXED BINARY(63),           /* query, len */
      FIXED BINARY(63))                    /* k */
      RETURNS(FIXED BINARY(63));           /* n_hits */
   DECLARE sov_knowledge_verify EXTERNAL ENTRY(
      POINTER, FIXED BINARY(63))           /* chunk_id, len */
      RETURNS(FIXED BINARY(63));           /* 1 = verified */
   DECLARE sov_knowledge_count  EXTERNAL ENTRY()
      RETURNS(FIXED BINARY(63));
   DECLARE sov_knowledge_tau    EXTERNAL ENTRY(
      FLOAT(FLOAT_PRECISION),              /* tau_0 */
      FIXED BINARY(63))                    /* k_hits */
      RETURNS(FLOAT(FLOAT_PRECISION));

   /* ── UPGRADE 3: Cryptographic State at Variable Assignment Layer ─── */
   /* Every state update carries its Blake3 hash inline.                  */
   DECLARE 1 SOVEREIGN_STATE,
              2 GENERATION    FIXED(FIXED_PRECISION),
              2 RHO_HASH      CHARACTER(BLAKE3_LEN),
              2 SIG           CHARACTER(64),
              2 WORM_SEALED   BIT(1),
              2 PHI_ENERGY    FIXED(FIXED_PRECISION);  /* φ⁻¹ × 10^10 */

   /* ── UPGRADE 2: S-Expression Metacoding — Lisp AST representation ── */
   /* PL/I structures used as homoiconic tree nodes.                      */
   /* Non-recursive: all tree walks are iterative LOOP/LEAVE.             */
   DECLARE 1 SEXPR_NODE BASED(NODE_PTR),
              2 TAG        CHARACTER(8),  /* 'ATOM', 'CONS', 'NIL ' */
              2 ATOM_VAL   CHARACTER(32),
              2 CAR_PTR    POINTER,
              2 CDR_PTR    POINTER;

   DECLARE NODE_PTR POINTER;

   /* ── UPGRADE 4: Non-Blocking Actor Queue (async message passing) ─── */
   /* Ring buffer — no locks, no recursion, power-of-2 capacity.          */
   DECLARE QUEUE_CAP FIXED BINARY(31) VALUE(256);
   DECLARE 1 MSG_QUEUE,
              2 HEAD     FIXED BINARY(31) VALUE(0),
              2 TAIL     FIXED BINARY(31) VALUE(0),
              2 BUF(256) CHARACTER(128);

   /* ── MAIN BODY — NON-RECURSIVE CONTROL FLOW ───────────────────────  */
   DECLARE I FIXED BINARY(31);
   DECLARE ENERGY FIXED(FIXED_PRECISION);
   DECLARE SEALED BIT(1);

   CALL SOV_INIT();
   CALL COBOL_RECORD_GATE();   /* Hand off to COBOL record layer */
   CALL INTERCAL_INVERT();     /* INTERCAL control inversion layer */
   CALL SOV_EVOLVE_LOOP();
   CALL KNOWLEDGE_AGENT();     /* WORM-attested agent knowledge (no wrapper LLM) */
   CALL SOV_WORM_SEAL();

   RETURN;

/* ── SUBROUTINE: INIT ─────────────────────────────────────────────── */
SOV_INIT: PROCEDURE;
   GENERATION  = 0;
   PHI_ENERGY  = PHI_INV_FIXED;   /* Start at φ⁻¹ */
   WORM_SEALED = '0'B;
END SOV_INIT;

/* ── SUBROUTINE: COBOL RECORD GATE ───────────────────────────────── */
/* Calls the COBOL layer for fixed-format record validation.           */
/* COBOL handles: record layout, field validation, threshold branching  */
/* PL/I receives back: validated density matrix as fixed-format record  */
SOV_COBOL_GATE: PROCEDURE;
   /* External COBOL entry — compiled separately, linked via C ABI     */
   DECLARE COBOL_RECORD_GATE EXTERNAL ENTRY(
      POINTER,            /* record buffer ptr */
      FIXED BINARY(31),   /* record length */
      FIXED BINARY(31));  /* return code */
   DECLARE REC_BUF   CHARACTER(512);
   DECLARE REC_LEN   FIXED BINARY(31) VALUE(512);
   DECLARE RET_CODE  FIXED BINARY(31);
   CALL COBOL_RECORD_GATE(ADDR(REC_BUF), REC_LEN, RET_CODE);
END SOV_COBOL_GATE;

/* ── SUBROUTINE: INTERCAL INVERSION ──────────────────────────────── */
/* INTERCAL's COME FROM = control flow inversion.                      */
/* Used here as: the result pulls the computation (lazy/demand-driven)  */
/* Non-recursive: INTERCAL's NEXT/RESUME are bounded to depth 1.       */
SOV_INTERCAL_GATE: PROCEDURE;
   DECLARE INTERCAL_INVERT EXTERNAL ENTRY(
      POINTER,            /* state ptr */
      FIXED BINARY(31));  /* inversion depth (always 1 — non-recursive) */
   DECLARE DEPTH FIXED BINARY(31) VALUE(1);
   CALL INTERCAL_INVERT(ADDR(SOVEREIGN_STATE), DEPTH);
END SOV_INTERCAL_GATE;

/* ── SUBROUTINE: JORDAN EVOLUTION LOOP ───────────────────────────── */
/* Non-recursive: iterative φ-decay loop, fixed N iterations.          */
/* Mirrors jordan_block.f90 exactly — same ABI, same constants.        */
SOV_EVOLVE_LOOP: PROCEDURE;
   DECLARE N_LAYERS FIXED BINARY(31) VALUE(8);
   DECLARE K        FIXED BINARY(31);
   DECLARE RHO_PTR  POINTER;
   DECLARE H_PTR    POINTER;
   DECLARE OUT_PTR  POINTER;
   DECLARE HASH_PTR POINTER;
   DECLARE SIG_PTR  POINTER;
   DECLARE SK_PTR   POINTER;
   DECLARE PK_PTR   POINTER;
   DECLARE DT       FLOAT(FLOAT_PRECISION) VALUE(0.01);

   /* Iterative — no recursion */
   DO K = 1 TO N_LAYERS;
      /* φ-decay: PHI_ENERGY = PHI_ENERGY × φ⁻¹ / scale */
      PHI_ENERGY = (PHI_ENERGY * PHI_INV_FIXED) / PHI_INV_SCALE;
      GENERATION = GENERATION + 1;
      /* Delegate matrix math to Fortran ABI */
      CALL sov_jordan_step(
         H_PTR, RHO_PTR, DENSITY_DIM, DT,
         SK_PTR, PK_PTR,
         OUT_PTR, HASH_PTR, SIG_PTR);
   END;
END SOV_EVOLVE_LOOP;

/* ── SUBROUTINE: WORM SEAL ───────────────────────────────────────── */
/* Seals the final state into the Blake3+Ed25519 WORM chain.           */
SOV_WORM_SEAL: PROCEDURE;
   CALL sov_bifrost_sign(
      ADDR(SOVEREIGN_STATE),
      SIZE(SOVEREIGN_STATE),
      ADDR(SOVEREIGN_STATE.SIG),
      ADDR(SOVEREIGN_STATE.RHO_HASH));
   WORM_SEALED = '1'B;
END SOV_WORM_SEAL;

/* ── ACTOR QUEUE: ENQUEUE (non-blocking ring buffer) ────────────────  */
SOV_ENQUEUE: PROCEDURE(MSG) RETURNS(BIT(1));
   DECLARE MSG   CHARACTER(128);
   DECLARE NEXT  FIXED BINARY(31);
   NEXT = MOD(MSG_QUEUE.TAIL + 1, QUEUE_CAP);
   IF NEXT = MSG_QUEUE.HEAD THEN RETURN('0'B);  /* full */
   MSG_QUEUE.BUF(MSG_QUEUE.TAIL + 1) = MSG;
   MSG_QUEUE.TAIL = NEXT;
   RETURN('1'B);
END SOV_ENQUEUE;

/* ── ACTOR QUEUE: DEQUEUE ────────────────────────────────────────── */
SOV_DEQUEUE: PROCEDURE RETURNS(CHARACTER(128));
   DECLARE MSG CHARACTER(128);
   IF MSG_QUEUE.HEAD = MSG_QUEUE.TAIL THEN RETURN('');  /* empty */
   MSG = MSG_QUEUE.BUF(MSG_QUEUE.HEAD + 1);
   MSG_QUEUE.HEAD = MOD(MSG_QUEUE.HEAD + 1, QUEUE_CAP);
   RETURN(MSG);
END SOV_DEQUEUE;

/* ── KNOWLEDGE AGENT: WORM-attested semantic memory (non-recursive) ─ */
/* Actual agent surface — not a wrapper class, not an LLM host.         */
/* PL/I enqueues experience; Fortran KB seals + retrieves by cosine.    */
KNOWLEDGE_AGENT: PROCEDURE;
   DECLARE QUERY   CHARACTER(128) VARYING;
   DECLARE KEY     CHARACTER(32)  VARYING;
   DECLARE HITS    FIXED BINARY(63);
   DECLARE TAU     FLOAT(FLOAT_PRECISION);
   DECLARE N_CHUNKS FIXED BINARY(63);
   DECLARE NOTE    CHARACTER(128);

   CALL sov_knowledge_init(1024);
   KEY = 'SOVEREIGN_PLI_AGENT';
   QUERY = 'agent_state: generation=' || GENERATION;

   /* Seal current agent observation into knowledge ledger */
   CALL sov_knowledge_append(ADDR(QUERY), LENGTH(QUERY), ADDR(KEY), LENGTH(KEY));

   /* Retrieve top-5 attested chunks for this agent context */
   HITS = sov_knowledge_search(ADDR(QUERY), LENGTH(QUERY), 5);
   N_CHUNKS = sov_knowledge_count();
   TAU = sov_knowledge_tau(1.0, HITS);   /* φ⁻ᵏ knowledge temperature */

   /* Push summary onto actor queue for COBOL/INTERCAL layers */
   NOTE = 'KB_HITS';
   CALL SOV_ENQUEUE(NOTE);
END KNOWLEDGE_AGENT;

END SOV_KERNEL;