Class: Fast::SQL::SourceBuffer

Inherits:

Fast::Source::Buffer

• Object
• Fast::Source::Buffer
• Fast::SQL::SourceBuffer

Defined in:

lib/fast/sql.rb

Overview

The SQL source buffer is a subclass of Fast::Source::Buffer which contains the tokens of the SQL statement. When you call ast.location.expression it will return a range which is mapped to the tokens. ast = Fast::SQL.parse("select 1") ast.location.expression # => #<Fast::Source::Range (sql) 0...9> ast.location.expression.source_buffer.tokens => [ <PgQuery::ScanToken: start: 0, end: 6, token: :SELECT, keyword_kind: :RESERVED_KEYWORD>, <PgQuery::ScanToken: start: 7, end: 8, token: :ICONST, keyword_kind: :NO_KEYWORD>]

See Also:

• Node

Instance Attribute Summary

Attributes inherited from Fast::Source::Buffer

#name, #source

Instance Method Summary

• #tokens ⇒ Object

Methods inherited from Fast::Source::Buffer

#initialize, #source_range

Constructor Details

This class inherits a constructor from Fast::Source::Buffer

Instance Method Details

#tokens ⇒ Object

# File 'lib/fast/sql.rb', line 77

def tokens
  @tokens ||= PgQuery.scan(source).first.tokens
end