Regex Program¶

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import "std/text/regex-program";

Instr struct¶

A single instruction of a compiled regex program. Which fields are meaningful depends on kind:
ch for CHAR, classIndex for CLASS, x for JMP, x/y for SPLIT, saveSlot for SAVE. The
remaining kinds (ANY, ANCHOR_START, ANCHOR_END, MATCH) carry no extra payload.

Fields are public, like "std/runtime/error_rt"'s Error - plain internal data shared by the compiler/matcher files of this module, not an encapsulated type.

Fields¶

Constructors¶

ctor¶

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public p Instr.ctor(InstrKind kind)

Parameters

CharClass struct¶

A character class: a set of inclusive ranges, optionally negated. Used to implement [...], [^...] and the expansions of \d \D \w \W \s \S.

Fields¶

Methods¶

matches¶

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public f<bool> CharClass.matches(char c)

Check whether the given character is a member of this class, accounting for negation.

Parameters

Returns: bool — Whether c is matched by this class

RegexProgram struct¶

A compiled regex program: a flat list of instructions (Thompson-construction bytecode, executed by the Pike's-VM matcher in "std/text/regex/regex-matcher") plus the character classes it references and the number of capturing groups it declares (excluding group 0, the whole match).

Fields¶

InstrKind enum¶

Tag for what a single compiled instruction does.