#runtime

struct Frame

pub struct Frame {
    pub file string
    pub line int
    pub ok bool
}

Purpose

Compile-time callsite frame. `caller(0)` and `caller(1)` are rewritten to a Frame literal for this call site. Other skip values are rejected at compile time (no runtime stack walk).

Parameters

file string

field (string)

line int

field (int)

ok bool

field (bool)

caller

pub fn caller(skip int) Frame

Purpose

caller; returns Frame.

Parameters

skip int

skip (int)

Returns

Frame — a value of this type

map_mix64

pub fn map_mix64(value int) int

Purpose

Pure ordinary Xu policy. No Assembler, container allocation or raw memory capability: native map adapters supply scalar state and borrowed keys. Arithmetic is modulo 2^64; masks turn Xu's signed shifts into logical shifts.

Parameters

value int

value (int)

Returns

int — a value of this type

map_hash_int

pub fn map_hash_int(key int, seed int) int

Purpose

Map hash int.

Parameters

key int

key (int)

seed int

random seed (int)

Returns

int — a value of this type

map_hash_string

pub fn map_hash_string(key &string, seed int) int

Purpose

Map hash string.

Parameters

key &string

key (borrowed; caller keeps it; type &string)

seed int

random seed (int)

Returns

int — a value of this type

map_insert_action

pub fn map_insert_action(live int, used int, cap int) int

Purpose

0=keep, 1=grow, 2=compact. Native storage guarantees 0<=live<=used<=cap and power-of-two cap>=16. cap-cap/4 avoids overflow at large capacities.

Parameters

live int

live (int)

used int

used (int)

cap int

cap (int)

Returns

int — a value of this type

starts_with

pub fn starts_with(s &string, prefix &string) bool

Purpose

starts_with(s, prefix) → bool. S7 guard: negative descriptor lengths fail-loud. No arbitrary size cap — prefixes may come from runtime data.

Parameters

s &string

source string (borrowed; caller keeps it; type &string)

prefix &string

prefix (borrowed; caller keeps it; type &string)

Returns

bool — true or false

is_digit

pub fn is_digit(c int) bool

Purpose

ASCII character predicates. Ranges are the historical byte ranges only do not widen to Unicode whitespace or locale classes.

Parameters

c int

byte or character code (int)

Returns

bool — true or false

is_alpha

pub fn is_alpha(c int) bool

Purpose

Whether it is alpha.

Parameters

c int

byte or character code (int)

Returns

bool — true or false

is_alnum

pub fn is_alnum(c int) bool

Purpose

Whether it is alnum.

Parameters

c int

byte or character code (int)

Returns

bool — true or false

is_space

pub fn is_space(c int) bool

Purpose

Whether it is space.

Parameters

c int

byte or character code (int)

Returns

bool — true or false

itoa

pub fn itoa(n int) string

Purpose

itoa(n) uses a decimal slice buffer and single-argument string_from_bytes. Keep the quotient signed; negating only the remainder handles INT_MIN.

Parameters

n int

count, length, or limit (int)

Returns

string — result string

parse_int

pub fn parse_int(s &string) int

Purpose

Parse as int. Throws on failure.

Parameters

s &string

source string (borrowed; caller keeps it; type &string)

Returns

int — a value of this type

str_bytes

pub fn str_bytes(s &string) []int

Purpose

str_bytes(s) → []int of byte values. Ordinary replacement for rt_emit_str_bytes / s.bytes. Bounded index loop, first-stage array base.

Parameters

s &string

source string (borrowed; caller keeps it; type &string)

Returns

[]int — slice result

str_runes

pub fn str_runes(s &string) []int

Purpose

str_runes(s) → []int of codepoints. Ordinary replacement for rt_emit_str_runes / s.runes. Invalid UTF-8 fail-louds (stderr + exit 1). Helpers take &string so heap strings are not cloned per codepoint.

Parameters

s &string

source string (borrowed; caller keeps it; type &string)

Returns

[]int — slice result