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RegExpObj

nodejs::host

Struct RegExpObj 

Source 
pub struct RegExpObj {
    pub re: Rc<Regex>,
    pub source: String,
    pub flags: String,
    pub global: bool,
    pub ignore_case: bool,
    pub multiline: bool,
    pub dot_all: bool,
    pub sticky: bool,
    pub unicode: bool,
    pub last_index: U16Index,
}
Expand description

A RegExp object: the compiled fancy_regex::Regex plus the JS-visible source, flag booleans, and the mutable lastIndex cursor (used by g/y matching). fancy-regex adds lookaround + backreferences on top of the Rust regex fast path, so the JS grammar node-js can accept is a near-superset.

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§re: Rc<Regex>

The translated regex. Construction of a pattern fancy-regex still cannot express (documented in BUGS.md) throws at RegExp build time, so a live RegExpObj always holds a compiled engine.

Shared (Rc) rather than owned, because a regex LITERAL builds a fresh RegExpObj on every evaluation — it has to, since lastIndex is per-object mutable state — while the compiled engine behind it is immutable and identical every time. See regexp::compiled.

§source: String§flags: String§global: bool§ignore_case: bool§multiline: bool§dot_all: bool§sticky: bool§unicode: bool§last_index: U16Index

lastIndex, in UTF-16 code units; advanced by exec/test under the g/y flags. The newtype keeps it from being confused with the regex engine’s byte offsets, which are the same shape and differ off the BMP.

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impl Clone for RegExpObj

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fn clone(&self) -> RegExpObj

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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The archived version of the pointer metadata for this type.
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Causes self to use its Binary implementation when Debug-formatted.
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Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

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