Class: Fast::SQL::SourceBuffer

Inherits:
Parser::Source::Buffer
  • Object
show all
Defined in:
lib/fast/sql.rb

Overview

The SQL source buffer is a subclass of Parser::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 # => #<Parser::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:

Instance Method Summary collapse

Instance Method Details

#tokens ⇒ Object 



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# File 'lib/fast/sql.rb', line 76

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