Struct Node 

pub struct Node { /* private fields */ }

A WAVE AST node.

Implementations

impl Node

pub fn ty(&self) -> NodeType

Returns this node’s type.

pub fn span(&self) -> Range<usize>

Returns this node’s span.

pub fn as_bool(&self) -> Result<bool, ParserError>

Returns a bool value if this node represents a bool.

pub fn as_number<T>(&self, src: &str) -> Result<T, ParserError>

where T: FromStr,

Returns a number value of the given type (integer or float) if this node can represent a number of that type.

pub fn as_char(&self, src: &str) -> Result<char, ParserError>

Returns a char value if this node represents a valid char.

pub fn as_str<'src>( &self, src: &'src str, ) -> Result<Cow<'src, str>, ParserError>

Returns a str value if this node represents a valid string.

pub fn iter_str<'src>( &self, src: &'src str, ) -> Result<impl Iterator<Item = Result<Cow<'src, str>, ParserError>>, ParserError>

Returns an iterator of string “parts” which together form a decoded string value if this node represents a valid string.

pub fn as_tuple(&self) -> Result<impl ExactSizeIterator, ParserError>

Returns an iterator of value nodes if this node represents a tuple.

pub fn as_list(&self) -> Result<impl ExactSizeIterator, ParserError>

Returns an iterator of value nodes if this node represents a list.

pub fn as_record<'this, 'src>( &'this self, src: &'src str, ) -> Result<impl ExactSizeIterator, ParserError>

Returns an iterator of field name and value node pairs if this node represents a record value.

pub fn as_variant<'this, 'src>( &'this self, src: &'src str, ) -> Result<(&'src str, Option<&'this Node>), ParserError>

Returns a variant label and optional payload if this node can represent a variant value.

pub fn as_enum<'src>(&self, src: &'src str) -> Result<&'src str, ParserError>

Returns an enum value label if this node represents a label.

pub fn as_option(&self) -> Result<Option<&Node>, ParserError>

Returns an option value if this node represents an option.

pub fn as_result( &self, ) -> Result<Result<Option<&Node>, Option<&Node>>, ParserError>

Returns a result value with optional payload value if this node represents a result.

pub fn as_flags<'this, 'src>( &'this self, src: &'src str, ) -> Result<impl Iterator<Item = &'src str> + 'this, ParserError>

where 'src: 'this,

Returns an iterator of flag labels if this node represents flags.

pub fn to_wasm_value<V>( &self, ty: &<V as WasmValue>::Type, src: &str, ) -> Result<V, ParserError>

where V: WasmValue,

Converts this node into the given typed value from the given input source.

pub fn to_wasm_params<'types, V>( &self, types: impl IntoIterator<Item = &'types <V as WasmValue>::Type>, src: &str, ) -> Result<Vec<V>, ParserError>

where V: WasmValue + 'static,

Converts this node into the given types. See crate::untyped::UntypedFuncCall::to_wasm_params.

Trait Implementations

impl Clone for Node

fn clone(&self) -> Node

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Node

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

Formats the value using the given formatter.