Enum GrammarContext 

pub enum GrammarContext {
    Start,
    ExpectColumnList,
    ExpectTable,
    ExpectKeyspace,
    ExpectColumn,
    ExpectSetClause,
    ExpectQualifiedPart,
    ExpectType,
    ExpectOrderBy,
    ExpectOrderByColumn,
    ExpectValues,
    ExpectWithOption,
    ExpectConsistencyLevel,
    ExpectDescribeTarget,
    ExpectFilePath,
    ExpectCreateTarget,
    ExpectAlterTarget,
    ExpectDropTarget,
    ExpectDeleteTarget,
    ExpectGrantRevoke,
    ExpectInsertTarget,
    ExpectBeginTarget,
    ExpectSelectPostFrom,
    ExpectInsertPostValues,
    ExpectDeletePostFrom,
    ExpectUpdateClause,
    ExpectUpdatePostSet,
    General,
}

Grammar context: what syntactic position we’re at, used to distinguish keywords from identifiers and to drive tab completion.

Variants

Start

Start of statement — expecting a keyword like SELECT, INSERT, etc.

ExpectColumnList

After SELECT — expecting column list, *, or DISTINCT.

ExpectTable

After FROM / INTO / UPDATE / TABLE / INDEX ON — expecting a table name.

ExpectKeyspace

After USE / KEYSPACE — expecting a keyspace name.

ExpectColumn

After WHERE / AND / IF (conditions) — expecting a column name.

ExpectSetClause

After SET (in UPDATE) — expecting column = value pairs.

ExpectQualifiedPart

After a dot — expecting the second part of a qualified name.

ExpectType

After a column/table type keyword — expecting a CQL type name.

ExpectOrderBy

After ORDER — expecting BY.

ExpectOrderByColumn

After ORDER BY — expecting column name.

ExpectValues

After VALUES — expecting ( value_list ).

ExpectWithOption

Inside WITH clause options.

ExpectConsistencyLevel

After CONSISTENCY / SERIAL CONSISTENCY — expecting level name.

ExpectDescribeTarget

After DESCRIBE / DESC — expecting sub-command or schema name.

ExpectFilePath

After SOURCE / CAPTURE — expecting file path.

ExpectCreateTarget

After CREATE — expecting TABLE, KEYSPACE, INDEX, etc.

ExpectAlterTarget

After ALTER — expecting TABLE, KEYSPACE, TYPE, etc.

ExpectDropTarget

After DROP — expecting TABLE, KEYSPACE, INDEX, etc.

ExpectDeleteTarget

After DELETE (before FROM) — expecting column names or FROM.

ExpectGrantRevoke

After GRANT or REVOKE — expecting permission names.

ExpectInsertTarget

After INSERT — expecting INTO.

ExpectBeginTarget

After BEGIN — expecting BATCH, UNLOGGED, COUNTER.

ExpectSelectPostFrom

After SELECT … FROM

— expecting WHERE, ORDER BY, LIMIT, etc.

ExpectInsertPostValues

After INSERT INTO … VALUES (…) — expecting IF NOT EXISTS, USING.

ExpectDeletePostFrom

After DELETE … FROM

— expecting WHERE, USING TIMESTAMP, IF.

ExpectUpdateClause

After UPDATE

— expecting SET, USING.

ExpectUpdatePostSet

After UPDATE … SET … — expecting WHERE, IF.

General

General clause context (default within a statement body).

Trait Implementations

impl Clone for GrammarContext

fn clone(&self) -> GrammarContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GrammarContext

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

Formats the value using the given formatter.

impl PartialEq for GrammarContext

fn eq(&self, other: &GrammarContext) -> 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 Copy for GrammarContext

impl Eq for GrammarContext

impl StructuralPartialEq for GrammarContext