// GENERATED by scripts/gen/keywords.mjs. Do not edit by hand.
// Keyword ids for engine/lex.zena. Ids below K_LET are reserved words.
import { Memory } from 'zena:memory';

export let K_NONE: i32 = 0;
export let K_BREAK: i32 = 1;
export let K_CASE: i32 = 2;
export let K_CATCH: i32 = 3;
export let K_CLASS: i32 = 4;
export let K_CONST: i32 = 5;
export let K_CONTINUE: i32 = 6;
export let K_DEBUGGER: i32 = 7;
export let K_DEFAULT: i32 = 8;
export let K_DELETE: i32 = 9;
export let K_DO: i32 = 10;
export let K_ELSE: i32 = 11;
export let K_ENUM: i32 = 12;
export let K_EXPORT: i32 = 13;
export let K_EXTENDS: i32 = 14;
export let K_FALSE: i32 = 15;
export let K_FINALLY: i32 = 16;
export let K_FOR: i32 = 17;
export let K_FUNCTION: i32 = 18;
export let K_IF: i32 = 19;
export let K_IMPORT: i32 = 20;
export let K_IN: i32 = 21;
export let K_INSTANCEOF: i32 = 22;
export let K_NEW: i32 = 23;
export let K_NULL: i32 = 24;
export let K_RETURN: i32 = 25;
export let K_SUPER: i32 = 26;
export let K_SWITCH: i32 = 27;
export let K_THIS: i32 = 28;
export let K_THROW: i32 = 29;
export let K_TRUE: i32 = 30;
export let K_TRY: i32 = 31;
export let K_TYPEOF: i32 = 32;
export let K_VAR: i32 = 33;
export let K_VOID: i32 = 34;
export let K_WHILE: i32 = 35;
export let K_WITH: i32 = 36;
export let K_LET: i32 = 37;
export let K_STATIC: i32 = 38;
export let K_YIELD: i32 = 39;
export let K_AWAIT: i32 = 40;
export let K_ASYNC: i32 = 41;
export let K_OF: i32 = 42;
export let K_GET: i32 = 43;
export let K_SET: i32 = 44;
export let K_AS: i32 = 45;
export let K_SATISFIES: i32 = 46;
export let K_TYPE: i32 = 47;
export let K_INTERFACE: i32 = 48;
export let K_DECLARE: i32 = 49;
export let K_NAMESPACE: i32 = 50;
export let K_MODULE: i32 = 51;
export let K_ABSTRACT: i32 = 52;
export let K_READONLY: i32 = 53;
export let K_PUBLIC: i32 = 54;
export let K_PRIVATE: i32 = 55;
export let K_PROTECTED: i32 = 56;
export let K_OVERRIDE: i32 = 57;
export let K_ACCESSOR: i32 = 58;
export let K_GLOBAL: i32 = 59;
export let K_USING: i32 = 60;
export let K_IMPLEMENTS: i32 = 61;
export let K_IS: i32 = 62;
export let K_KEYOF: i32 = 63;
export let K_INFER: i32 = 64;
export let K_UNIQUE: i32 = 65;
export let K_ASSERTS: i32 = 66;
export let K_REQUIRE: i32 = 67;
export let K_FROM: i32 = 68;
export let K_OUT: i32 = 69;
export let K_ANY: i32 = 70;
export let K_UNKNOWN: i32 = 71;
export let K_STRING: i32 = 72;
export let K_NUMBER: i32 = 73;
export let K_BIGINT: i32 = 74;
export let K_SYMBOL: i32 = 75;
export let K_BOOLEAN: i32 = 76;
export let K_NEVER: i32 = 77;
export let K_OBJECT: i32 = 78;
export let K_UNDEFINED: i32 = 79;
export let K_CONSTRUCTOR: i32 = 80;
export let K_TARGET: i32 = 81;
export let K_META: i32 = 82;
export let K_ASSERT: i32 = 83;
export let K_DEFER: i32 = 84;
export let K_FIRST_CONTEXTUAL: i32 = 37;

export let KS_HEAD: i64 = 0x1dff834000103020;
export let KS_STMT_MOD: i64 = 0x7f2024000002120;
export let KS_MEMBER_MOD: i64 = 0x7f21a4000002000;
export let KS_REMOVED: i64 = 0x3f2000000000000;
export let KS_EXPR_START: i64 = 0x555948210;
export let KS_DECL: i64 = 0x2200041030;
export let KS_TYPE_START: i64 = 0x551908000;
export let KS_TYPE_MEMBER_MOD: i64 = 0x7e2184000000000;
export let KS_STRICT_RESERVED: i64 = 0x21c101e000000000;
export let KS_DL_DECL: i64 = 0xc002200040030;
export let KS_BINARY_WORD: i64 = 0x600000600000;
export let KS_PAREN_HEAD: i64 = 0x1808080000;
export let KS_PARAM_PROP: i64 = 0x1e0000000000000;
export let KS_NO_DOT_TYPE: i64 = 0x441008000;

// Whether keyword id k is in the set mask s.
export function keywordIn(k: i32, s: i64): boolean {
  return k < 64 && ((s >> (k as i64)) & (1 as i64)) != (0 as i64);
}

// Whether keyword id k, 64 or more, is in the set mask s of ids less 64.
export function keywordInHi(k: i32, s: i64): boolean {
  return k >= 64 && ((s >> ((k - 64) as i64)) & (1 as i64)) != (0 as i64);
}

// Whether token type t is in the set mask s (lex.zena's tokenIn tests the current token).
export function tokenTypeIn(t: i32, s: i64): boolean {
  return t < 64 && ((s >> (t as i64)) & (1 as i64)) != (0 as i64);
}

export let KS_KEYWORD_TYPE: i64 = 0x441008000;
export let KS_KEYWORD_TYPE_HI: i64 = 0xffc0;
export let TS_EXPR_START: i64 = 0x581001f00563c;
export let TS_TYPE_START: i64 = 0x3010a0222543c;
export let TS_PROPERTY_NAME: i64 = 0x420e;
export let TS_CAN_FOLLOW_MOD: i64 = 0x200000002440e;
export let TS_PREFIX_OP: i64 = 0x180001e000000;
export let TS_LITERAL: i64 = 0x31c;
export let TS_OPERAND_END: i64 = 0x1800021e;
export let TS_CLOSE_OR_SEP: i64 = 0xca800;
export let TS_OPEN: i64 = 0x5400;
export let TS_CLOSE: i64 = 0xa800;
export let TS_BINDING_START: i64 = 0x4402;
export let TS_PARAM_START: i64 = 0x24402;
export let TS_STR_NUM_TPL: i64 = 0x1c;
export let TS_JSDOC_NULLABLE_END: i64 = 0x1000020200082800;
export let TS_PARAM_FOLLOW: i64 = 0x1000000000380000;
export let TS_OPTIONAL_FOLLOW: i64 = 0x1000000000182000;
export let TS_MEMBER_NAME: i64 = 0x20e;
export let TS_POSTFIX_UPDATE: i64 = 0x1a000000;
// The static data below the frame stack: strip.zena starts the stack at DATA_END.
export let DATA_END: i32 = 7440;
// The lexer's token replay cache: LEXC_MASK + 1 entries of 16 bytes at LEXC.
export let LEXC: i32 = 3344;
export let LEXC_MASK: i32 = 255;
let KW_SLOT: i32 = 1024;
let KW_OFF: i32 = 1280;
let KW_TEXT: i32 = 1452;
let KW_MUL: i64 = 0x3678c5607077029d;
export let PUNCT: i32 = 1934;
export let PUNCT_ENT: i32 = 2062;

function lowMask64(n: i32): i64 {
  if (n >= 8) return -1;
  return ((1 as i64) << ((n * 8) as i64)) - (1 as i64);
}

function lowMask32(n: i32): i32 {
  if (n >= 4) return -1;
  return (1 << (n * 8)) - 1;
}

// The keyword id of the n-byte identifier at memory address p, zero when it is not a keyword. Reads 12 bytes
// at p whatever n is, so p needs that much addressable memory after it.
export function keywordAt(p: i32, n: i32): i32 {
  if (n > 11) return 0;
  let m = lowMask64(n);
  let w0 = Memory.default.getI64(p) & m;
  let k = Memory.default.getU8(KW_SLOT + ((((w0 * KW_MUL) >> (56 as i64)) as i32) & 255));
  let o = Memory.default.getI32(KW_OFF + k * 2);
  let s = o & 0xffff;
  if ((o >> 16) - s != n) return 0;
  if ((Memory.default.getI64(KW_TEXT + s) & m) != w0) return 0;
  if (n > 8 && ((Memory.default.getI32(p + 8) ^ Memory.default.getI32(KW_TEXT + s + 8)) & lowMask32(n - 8)) != 0) return 0;
  return k;
}