Module string_ops 

String operations for Seq

These functions are exported with C ABI for LLVM codegen to call.

Design Decision: split Return Value

split uses Option A (push parts + count):

• “a b c” “ “ split → “a” “b” “c” 3

This is the simplest approach, requiring no new types. The count allows the caller to know how many parts were pushed.

Re-exports

pub use patch_seq_char_to_string as char_to_string;

pub use patch_seq_json_escape as json_escape;

pub use patch_seq_string_byte_length as string_byte_length;

pub use patch_seq_string_char_at as string_char_at;

pub use patch_seq_string_concat as string_concat;

pub use patch_seq_string_contains as string_contains;

pub use patch_seq_string_empty as string_empty;

pub use patch_seq_string_equal as string_equal;

pub use patch_seq_string_find as string_find;

pub use patch_seq_string_length as string_length;

pub use patch_seq_string_split as string_split;

pub use patch_seq_string_starts_with as string_starts_with;

pub use patch_seq_string_substring as string_substring;

pub use patch_seq_string_to_int as string_to_int;

pub use patch_seq_string_to_lower as string_to_lower;

pub use patch_seq_string_to_upper as string_to_upper;

pub use patch_seq_string_trim as string_trim;

Functions

patch_seq_char_to_string^⚠

Convert a Unicode code point to a single-character string

patch_seq_json_escape^⚠

Escape a string for JSON output

patch_seq_string_byte_length^⚠

Get the byte length of a string (UTF-8 encoded)

patch_seq_string_char_at^⚠

Get the Unicode code point at a character index

patch_seq_string_concat^⚠

Concatenate two strings

patch_seq_string_contains^⚠

Check if a string contains a substring

patch_seq_string_empty^⚠

Check if a string is empty

patch_seq_string_equal^⚠

Check if two strings are equal

patch_seq_string_find^⚠

Find the first occurrence of a substring

patch_seq_string_length^⚠

Get the length of a string in Unicode characters (code points)

patch_seq_string_split^⚠

Split a string on a delimiter

patch_seq_string_starts_with^⚠

Check if a string starts with a prefix

patch_seq_string_substring^⚠

Extract a substring using character indices

patch_seq_string_to_int^⚠

Convert String to Int: ( String – Int Int ) Returns the parsed int and 1 on success, or 0 and 0 on failure. Accepts integers in range [-9223372036854775808, 9223372036854775807] (i64). Trims leading/trailing whitespace before parsing. Leading zeros are accepted (e.g., “007” parses to 7).

patch_seq_string_to_lower^⚠

Convert a string to lowercase

patch_seq_string_to_upper^⚠

Convert a string to uppercase

patch_seq_string_trim^⚠

Trim whitespace from both ends of a string