.\string.axec

pub def init(initial_capacity: usize): StringBuilder

StringBuilder for efficient string concatenation. Instead of O(n²) repeated allocations, uses amortized O(1) appends. Creates a new StringBuilder with the specified initial capacity.

pub def ensure_capacity(sb: ref StringBuilder, additional: usize): void

Ensures the StringBuilder has enough capacity for additional bytes.

pub def append(sb: ref StringBuilder, s: string): void

Appends a string to the StringBuilder.

pub def append_c(sb: ref StringBuilder, s: ref char): void

Appends a C string literal to the StringBuilder.

pub def append_char(sb: ref StringBuilder, c: char): void

Appends a single character to the StringBuilder. Inlined capacity check for performance.

pub def to_string(sb: ref StringBuilder): string

Converts the StringBuilder to a string. The StringBuilder remains valid and can continue to be used.

pub def clear(sb: ref StringBuilder): void

Clears the StringBuilder without deallocating memory.

pub def destroy(sb: ref StringBuilder): void

Destroys the StringBuilder and frees memory.

pub def create(data: ref char): string

string model representing a dynamic string with length tracking. Creates a new string from a char pointer.

pub def create_with_capacity(arena: ref Arena, capacity: i32): string

Creates a new empty string with specified capacity using arena allocation.

pub def destroy(s: ref string)

pub def replace_all(s: string, from: string, dest: string): string

Replace all non-overlapping occurrences of from in s with to. Optimized to use StringBuilder instead of O(n²) repeated concatenations.

pub def i32_to_string(value: i32): string

Convert some i32 to a string.

pub def str_len(s: string): usize

Returns the length of a string.

pub def to_title_case(s: string): string

Convert some string to titlecase.

pub def to_upper(s: string): string

Converts string to uppercase.

pub def to_lower(s: string): string

Converts string to lowercase.

pub def str_copy(src: string, desta: mut string): void

Copies source string to destination. Modifies dest in place.

def concat_chr(a: mut string, b: char): string

Concatenates a character to the end of a string. Returns the modified string. Mut here just means that the stack instance is mutable, not that the string data itself is modified in place.

pub def substring_se(s: string, start: i32, end: i32): string

Returns a substring from start to end (exclusive).

Optimized to use direct memory allocation instead of O(n²) concat_chr calls.

pub def substring_scse(s: string, start: i32, end: i32): ref char

Returns a substring from start to end (exclusive).

pub def substring_cse(s: ref char, start: i32, end: i32): ref char

Returns a substring from char* s from start to end (exclusive). Caller must free the result.

pub def equals_c(a: string, b: ref char): bool

Compares string with char*. Returns 0 if equal.

pub def compare(a: string, b: string): i32

Compares two strings. Returns 0 if equal.

pub def string_equals(a: string, b: string): bool

Checks if two strings are equal. Returns true if equal.

pub def concat_c(original: string, addon: ref char): string

Concatenates a char pointer to a string

pub def concat(dest: string, src: string): string

Concatenates source string to destination. Returns a new string.

pub def first_occurrence(s: string, c: i32): ref char

Finds first occurrence of character in string. Returns pointer or 0.

pub def substring(haystack: string, needle: string): ref char

Finds first occurrence of substring in string. Returns pointer or 0.

pub def str_contains(s: string, substr: string): bool

Checks if string contains substring.

pub def str_contains_c(s: string, substr: ref char): bool

Checks if string contains substring.

pub def str_to_int(s: string): i32

Converts string to integer.

pub def str_to_long(s: ref char): i64

Converts string to long integer.

pub def is_alpha(c: i32): i32

Checks if character is alphabetic.

pub def is_digit(c: i32): i32

Checks if character is numeric.

pub def is_alphanum(c: i32): i32

Checks if character is alphanumeric.

pub def to_upper_chrptr(s: ref char): ref char

Converts char* to uppercase.

pub def to_lower_chrptr(s: ref char): ref char

Converts char* to lowercase.

pub def to_upper_chr(c: i32): i32

Converts character to uppercase.

pub def to_lower_chr(c: i32): i32

Converts character to lowercase.

pub def str_dup(s: ref char): ref char

Allocates and copies a string. Caller must free the result.

pub def str_ncmp(s1: ref char, s2: ref char, n: i32): i32

Compares first n characters of two strings. Returns 0 if equal.

pub def str_ncopy(dest: ref char, src: ref char, n: i32): ref char

Copies at most n characters from source to destination.

pub def int_to_str(value: i32, buffer: ref char): ref char

Converts an integer to a string. Buffer must be at least 12 bytes.

pub def long_to_str(value: i64, buffer: ref char): ref char

Converts a long to a string. Buffer must be at least 21 bytes.

pub def float_to_str(value: f32, buffer: ref char): ref char

Converts a float to a string. Buffer must be at least 32 bytes.

pub def double_to_str(value: f64, buffer: ref char): ref char

Converts a double to a string. Buffer must be at least 32 bytes.

pub def get_char(s: string, pos: i32): char

Returns the character at position pos in string s.

pub def find_char_from(s: string, c: char, start: usize): i32

Returns the index of the first occurrence of character c in s at or after start. Returns -1 if the character is not found.

pub def find_last_char(s: string, c: char): i32

Returns the index of the last occurrence of character c in s. Returns -1 if the character is not found.

pub def find_substr(s: string, substr: string): i32

Returns the index of the first occurrence of substr inside s, or -1 if not found.

pub def substr(s: string, start: i32, length: i32): string

Returns a substring of s starting at start with the given length. If start is beyond the end of the string or length is zero, an empty string is returned. The function clamps the requested range to the bounds of the source string.

pub def has_prefix(s: string, prefix: string): bool

Checks if string has prefix.

pub def has_suffix(s: string, suffix: string): bool

Checks if string has suffix.

pub def trim_prefix(s: string, prefix: string): string

Removes prefix from string.

pub def trim_suffix(s: string, suffix: string): string

Removes suffix from string.

pub def lstrip(s: string): string

Strip leading whitespace from a string.

pub def rstrip(s: string): string

Strip trailing whitespace from a string.

pub def strip(s: string): string

String trailing and leading whitespace.

pub def str(data: ref char): string

Convenience function to convert a char* to a string.