Struct Expression 

pub struct Expression {
    pub start: usize,
    pub end: usize,
    pub syntax: ExpressionSyntax,
    pub node: Option<JsNodeHandle>,
    pub enriched_json: Option<Arc<str>>,
    pub leading_comments: Vec<JsComment>,
    pub trailing_comments: Vec<JsComment>,
}

Fields

start: usize

end: usize

syntax: ExpressionSyntax

node: Option<JsNodeHandle>

enriched_json: Option<Arc<str>>

Pre-computed ESTree JSON with loc fields injected from the full source. Set by Root::enrich_expressions after parsing.

leading_comments: Vec<JsComment>

Leading JS comments extracted from the expression source text.

trailing_comments: Vec<JsComment>

Trailing JS comments extracted from the expression source text.

Implementations

impl Expression

pub fn empty(start: usize, end: usize) -> Self

pub fn is_empty(&self) -> bool

Return true if this expression has no content (zero-length span, no node).

pub fn from_expression( parsed: Arc<JsExpression>, start: usize, end: usize, ) -> Self

pub fn from_sequence_item( root: Arc<JsExpression>, index: usize, start: usize, end: usize, ) -> Self

pub fn from_pattern(parsed: Arc<JsPattern>, start: usize, end: usize) -> Self

pub fn from_parameter_item( parameters: Arc<JsParameters>, index: usize, start: usize, end: usize, ) -> Self

pub fn from_rest_parameter( parameters: Arc<JsParameters>, start: usize, end: usize, ) -> Self

pub fn from_statement( program: Arc<JsProgram>, index: usize, start: usize, end: usize, ) -> Self

pub fn parens(&self) -> u16

pub fn is_parenthesized(&self) -> bool

pub fn parsed(&self) -> Option<&JsExpression>

pub fn oxc_expression_raw(&self) -> Option<&OxcExpression<'_>>

pub fn oxc_expression(&self) -> Option<&OxcExpression<'_>>

pub fn is_destructured_pattern(&self) -> bool

Returns true if this expression represents a destructured pattern (ObjectPattern or ArrayPattern).

pub fn oxc_pattern(&self) -> Option<&BindingPattern<'_>>

pub fn oxc_parameter(&self) -> Option<&FormalParameter<'_>>

pub fn oxc_rest_parameter(&self) -> Option<&FormalParameterRest<'_>>

pub fn oxc_statement(&self) -> Option<&OxcStatement<'_>>

pub fn oxc_variable_declaration(&self) -> Option<&OxcVariableDeclaration<'_>>

pub fn is_rest_parameter(&self) -> bool

pub fn source_snippet(&self) -> Option<&str>

pub fn identifier_name(&self) -> Option<Arc<str>>

pub fn literal_string(&self) -> Option<Arc<str>>

pub fn literal_bool(&self) -> Option<bool>

pub fn binding_identifier(&self) -> Option<&BindingIdentifier<'_>>

impl Expression

pub fn enrich_with_source(&mut self, full_source: &str)

Compute and store the enriched ESTree JSON with loc fields. Uses the full source to compute line/column information. column_offset is added to loc columns for nodes not on line 1 (used for destructured patterns to match upstream’s wrapping behavior).

pub fn enrich_with_source_and_column_offset( &mut self, full_source: &str, column_offset: usize, )

pub fn enrich_with_character(&mut self, full_source: &str)

Like enrich_with_source but adds character (byte offset) to loc objects. Used for SnippetBlock expression names where upstream includes character.

pub fn to_estree_json(&self) -> Option<String>

Serialize this expression to an ESTree JSON string using OXC’s serializer, with span offsets adjusted from OXC-local to Svelte source coordinates. Single-pass string-level adjustment, no intermediate tree parsing.

Returns None if no OXC node handle is attached.

impl Expression

pub fn extract_internal_comments(&self) -> Vec<(u32, u32, Value)>

Scan the expression’s source text and extract all internal JS comments. Returns (absolute_start, absolute_end, json_value) tuples suitable for attach_comments_to_json_tree.

Trait Implementations

impl Clone for Expression

fn clone(&self) -> Expression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expression

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Expression

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Expression

fn eq(&self, other: &Expression) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Expression

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl Span for Expression

fn start(&self) -> usize

fn end(&self) -> usize

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn contains(&self, offset: usize) -> bool

impl Eq for Expression

impl StructuralPartialEq for Expression