Enum mech_core::Constraint

pub enum Constraint {
    NewTable {
        id: TableId,
        rows: u64,
        columns: u64,
    },
    TableColumn {
        table: u64,
        column_ix: u64,
        column_alias: u64,
    },
    Reference {
        table: u64,
        destination: u64,
    },
    Scan {
        table: TableId,
        indices: Vec<Option<Parameter>>,
        output: TableId,
    },
    ChangeScan {
        table: TableId,
        column: Parameter,
    },
    Identifier {
        id: u64,
        text: String,
    },
    Range {
        table: TableId,
        start: TableId,
        end: TableId,
    },
    Filter {
        comparator: Comparator,
        lhs: (TableId, Option<Parameter>, Option<Parameter>),
        rhs: (TableId, Option<Parameter>, Option<Parameter>),
        output: TableId,
    },
    Logic {
        logic: Logic,
        lhs: (TableId, Option<Parameter>, Option<Parameter>),
        rhs: (TableId, Option<Parameter>, Option<Parameter>),
        output: TableId,
    },
    Function {
        operation: Function,
        parameters: Vec<(TableId, Option<Parameter>, Option<Parameter>)>,
        output: Vec<TableId>,
    },
    Constant {
        table: TableId,
        row: Index,
        column: Index,
        value: Quantity,
    },
    String {
        table: TableId,
        row: Index,
        column: Index,
        value: String,
    },
    CopyTable {
        from_table: u64,
        to_table: u64,
    },
    AliasTable {
        table: TableId,
        alias: u64,
    },
    Insert {
        from: (TableId, Option<Parameter>, Option<Parameter>),
        to: (TableId, Option<Parameter>, Option<Parameter>),
    },
    Append {
        from_table: TableId,
        to_table: TableId,
    },
    Empty {
        table: TableId,
        row: Index,
        column: Index,
    },
    Null,
}

Variants

NewTable

Fields of NewTable

id: TableIdrows: u64columns: u64

TableColumn

Fields of TableColumn

table: u64column_ix: u64column_alias: u64

Reference

Fields of Reference

table: u64destination: u64

Scan

Fields of Scan

table: TableIdindices: Vec<Option<Parameter>>output: TableId

ChangeScan

Fields of ChangeScan

table: TableIdcolumn: Parameter

Identifier

Fields of Identifier

id: u64text: String

Range

Fields of Range

table: TableIdstart: TableIdend: TableId

Filter

Fields of Filter

comparator: Comparatorlhs: (TableId, Option<Parameter>, Option<Parameter>)rhs: (TableId, Option<Parameter>, Option<Parameter>)output: TableId

Logic

Fields of Logic

logic: Logiclhs: (TableId, Option<Parameter>, Option<Parameter>)rhs: (TableId, Option<Parameter>, Option<Parameter>)output: TableId

Function

Fields of Function

operation: Functionparameters: Vec<(TableId, Option<Parameter>, Option<Parameter>)>output: Vec<TableId>

Constant

Fields of Constant

table: TableIdrow: Indexcolumn: Indexvalue: Quantity

String

Fields of String

table: TableIdrow: Indexcolumn: Indexvalue: String

CopyTable

Fields of CopyTable

from_table: u64to_table: u64

AliasTable

Fields of AliasTable

table: TableIdalias: u64

Insert

Fields of Insert

from: (TableId, Option<Parameter>, Option<Parameter>)to: (TableId, Option<Parameter>, Option<Parameter>)

Append

Fields of Append

from_table: TableIdto_table: TableId

Empty

Fields of Empty

table: TableIdrow: Indexcolumn: Index

Null

Trait Implementations

impl PartialEq<Constraint> for Constraint

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Clone for Constraint

fn clone(&self) -> Constraint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Constraint

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

Formats the value using the given formatter.