Struct prql_compiler::semantic::Context

pub struct Context { /* private fields */ }

Context of the pipeline.

Implementations

impl Context

pub fn declare_func(&mut self, func_def: FuncDef, id: Option<usize>)

pub fn declare_var( &mut self, var_def: VarDef, id: Option<usize>, span: Option<Span> ) -> Result<()>

pub fn resolve_ident(&mut self, ident: &Ident) -> Result<Ident, String>

pub fn table_decl_to_frame( &self, table_fq: &Ident, input_name: String, input_id: usize ) -> Frame

Converts a identifier that points to a table declaration to a frame of that table.

pub fn declare_table_for_literal( &mut self, input_id: usize, columns: Option<Vec<RelationColumn>>, name_hint: Option<String> ) -> Frame

Declares a new table for a relation literal. This is needed for column inference to work properly.

impl Context

pub fn validate_type<F>( &mut self, found: &Expr, expected: &Ty, who: F ) -> Result<Ty, Error>where F: FnOnce() -> Option<String>,

Validates that found node has expected type. Returns assumed type of the node.

Trait Implementations

impl Clone for Context

fn clone(&self) -> Context

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Context

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

Formats the value using the given formatter.

impl Default for Context

fn default() -> Context

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Context

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Context

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer.