Struct RelationParser

pub struct RelationParser<'a> {
    tree: TreeBuilder<'a>,
}

Fields

tree: TreeBuilder<'a>

Implementations

impl<'a> RelationParser<'a>

pub fn parse_line( &mut self, line: IndentedLine<'a>, line_no: i64, ) -> Result<(), ParseError>

fn parse_relation( &self, extensions: &SimpleExtensions, line_no: i64, pair: Pair<'_, Rule>, child_relations: Vec<Box<Rel>>, input_field_count: usize, ) -> Result<Rel, ParseError>

Parse a relation from a Pest pair of rule ‘relation’ into a Substrait Rel.

fn parse_rel<T: RelationParsePair>( &self, extensions: &SimpleExtensions, line_no: i64, pair: Pair<'_, Rule>, child_relations: Vec<Box<Rel>>, input_field_count: usize, ) -> Result<Rel, ParseError>

Parse a specific relation type from a Pest pair of matching rule into a Substrait Rel.

fn build_rel( &self, extensions: &SimpleExtensions, node: LineNode<'_>, ) -> Result<Rel, ParseError>

Convert a given LineNode into a Substrait Rel. Also recursively builds children.

fn build_plan_rel( &self, extensions: &SimpleExtensions, node: LineNode<'_>, ) -> Result<PlanRel, ParseError>

Build a tree of relations from a LineNode, with the root in the form of a PlanRel - the root type in a Substrait Plan.

fn build( self, extensions: &SimpleExtensions, ) -> Result<Vec<PlanRel>, ParseError>

Build all the trees we have into PlanRels.

Trait Implementations

impl<'a> Clone for RelationParser<'a>

fn clone(&self) -> RelationParser<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for RelationParser<'a>

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

Formats the value using the given formatter.

impl<'a> Default for RelationParser<'a>

fn default() -> RelationParser<'a>

Returns the “default value” for a type.