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// This package helps break dependency cycles for the regular expression engine.
package regex_common
/*
(c) Copyright 2024 Feoramund <rune@swevencraft.org>.
Made available under Odin's license.
List of contributors:
Feoramund: Initial implementation.
*/
// VM limitations
MAX_CAPTURE_GROUPS :: max(#config(ODIN_REGEX_MAX_CAPTURE_GROUPS, 10), 10)
MAX_PROGRAM_SIZE :: int(max(i16))
MAX_CLASSES :: int(max(u8))
ODIN_DEBUG_REGEX :: #config(ODIN_DEBUG_REGEX, false)
Flag :: enum u8 {
// Multiline: treat `^` and `$` as if they also match newlines.
Multiline,
// Case Insensitive: treat `a-z` as if it was also `A-Z`.
Case_Insensitive,
// Ignore Whitespace: bypass unescaped whitespace outside of classes.
Ignore_Whitespace,
// Unicode: let the compiler and virtual machine know to expect Unicode strings.
Unicode,
// No Capture: avoid saving capture group data entirely.
No_Capture,
// No Optimization: do not pass the pattern through the optimizer; for debugging.
No_Optimization,
}
Flags :: bit_set[Flag; u8]
@(rodata)
Flag_To_Letter := #sparse[Flag]u8 {
.Multiline = 'm',
.Case_Insensitive = 'i',
.Ignore_Whitespace = 'x',
.Unicode = 'u',
.No_Capture = 'n',
.No_Optimization = '-',
}
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