From: Justin Hunter Date: Wed, 5 Aug 2009 22:48:48 +0000 (-0700) Subject: initial mysql grammar X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=247f09cd3b88ac6b7030669a26417375433a38d1;p=dbsrgits%2FSQL-Translator-2.0-ish.git initial mysql grammar --- diff --git a/lib/SQL/Translator/Grammar/MySQL.pm b/lib/SQL/Translator/Grammar/MySQL.pm new file mode 100644 index 0000000..270a879 --- /dev/null +++ b/lib/SQL/Translator/Grammar/MySQL.pm @@ -0,0 +1,631 @@ +use MooseX::Declare; +role SQL::Translator::Grammar::MySQL { + +# ------------------------------------------------------------------- +# Copyright (C) 2002-2009 SQLFairy Authors +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; version 2. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +# 02111-1307 USA +# ------------------------------------------------------------------- + +method _build_grammar { +return q! +{ + my ( $database_name, %tables, $table_order, @table_comments, %views, + $view_order, %procedures, $proc_order ); + my $delimiter = ';'; +} + +# +# The "eofile" rule makes the parser fail if any "statement" rule +# fails. Otherwise, the first successful match by a "statement" +# won't cause the failure needed to know that the parse, as a whole, +# failed. -ky +# +startrule : statement(s) eofile { + { + database_name => $database_name, + tables => \%tables, + views => \%views, + procedures => \%procedures, + } +} + +eofile : /^\Z/ + +statement : comment + | use + | set + | drop + | create + | alter + | insert + | delimiter + | empty_statement + | + +use : /use/i WORD "$delimiter" + { + $database_name = $item[2]; + @table_comments = (); + } + +set : /set/i /[^;]+/ "$delimiter" + { @table_comments = () } + +drop : /drop/i TABLE /[^;]+/ "$delimiter" + +drop : /drop/i WORD(s) "$delimiter" + { @table_comments = () } + +string : + # MySQL strings, unlike common SQL strings, can be double-quoted or + # single-quoted, and you can escape the delmiters by doubling (but only the + # delimiter) or by backslashing. + + /'(\\.|''|[^\\\'])*'/ | + /"(\\.|""|[^\\\"])*"/ + # For reference, std sql str: /(?:(?:\')(?:[^\']*(?:(?:\'\')[^\']*)*)(?:\'))// + +nonstring : /[^;\'"]+/ + +statement_body : string | nonstring + +insert : /insert/i statement_body(s?) "$delimiter" + +delimiter : /delimiter/i /[\S]+/ + { $delimiter = $item[2] } + +empty_statement : "$delimiter" + +alter : ALTER TABLE table_name alter_specification(s /,/) "$delimiter" + { + my $table_name = $item{'table_name'}; + die "Cannot ALTER table '$table_name'; it does not exist" + unless $tables{ $table_name }; + for my $definition ( @{ $item[4] } ) { + $definition->{'extra'}->{'alter'} = 1; + push @{ $tables{ $table_name }{'constraints'} }, $definition; + } + } + +alter_specification : ADD foreign_key_def + { $return = $item[2] } + +create : CREATE /database/i WORD "$delimiter" + { @table_comments = () } + +create : CREATE TEMPORARY(?) TABLE opt_if_not_exists(?) table_name '(' create_definition(s /,/) /(,\s*)?\)/ table_option(s?) "$delimiter" + { + my $table_name = $item{'table_name'}; + $tables{ $table_name }{'order'} = ++$table_order; + $tables{ $table_name }{'name'} = $table_name; + + if ( @table_comments ) { + $tables{ $table_name }{'comments'} = [ @table_comments ]; + @table_comments = (); + } + + my $i = 1; + for my $definition ( @{ $item[7] } ) { + if ( $definition->{'supertype'} eq 'field' ) { + my $field_name = $definition->{'name'}; +# $tables{ $table_name }{'columns'}{ $field_name } = { %$definition, order => $i }; + push @{$tables{$table_name}{'columns'}}, $definition; + $i++; + + if ( $definition->{'is_primary_key'} ) { + push @{ $tables{ $table_name }{'constraints'} }, + { + type => 'primary_key', + fields => [ $field_name ], + } + ; + } + } + elsif ( $definition->{'supertype'} eq 'constraint' ) { + push @{ $tables{ $table_name }{'constraints'} }, $definition; + } + elsif ( $definition->{'supertype'} eq 'index' ) { + push @{ $tables{ $table_name }{'indices'} }, $definition; + } + } + + if ( my @options = @{ $item{'table_option(s?)'} } ) { + for my $option ( @options ) { + my ( $key, $value ) = each %$option; + if ( $key eq 'comment' ) { + push @{ $tables{ $table_name }{'comments'} }, $value; + } + else { + push @{ $tables{ $table_name }{'table_options'} }, $option; + } + } + } + + 1; + } + +opt_if_not_exists : /if not exists/i + +create : CREATE UNIQUE(?) /(index|key)/i index_name /on/i table_name '(' field_name(s /,/) ')' "$delimiter" + { + @table_comments = (); + push @{ $tables{ $item{'table_name'} }{'indices'} }, + { + name => $item[4], + type => $item[2][0] ? 'unique' : 'normal', + fields => $item[8], + } + ; + } + +create : CREATE /trigger/i NAME not_delimiter "$delimiter" + { + @table_comments = (); + } + +create : CREATE PROCEDURE NAME not_delimiter "$delimiter" + { + @table_comments = (); + my $func_name = $item[3]; + my $owner = ''; + my $sql = "$item[1] $item[2] $item[3] $item[4]"; + + $procedures{ $func_name }{'order'} = ++$proc_order; + $procedures{ $func_name }{'name'} = $func_name; + $procedures{ $func_name }{'owner'} = $owner; + $procedures{ $func_name }{'sql'} = $sql; + } + +PROCEDURE : /procedure/i + | /function/i + +create : CREATE replace(?) algorithm(?) /view/i NAME not_delimiter "$delimiter" + { + @table_comments = (); + my $view_name = $item[5]; + my $sql = join(q{ }, grep { defined and length } $item[1], $item[2]->[0], $item[3]->[0]) + . " $item[4] $item[5] $item[6]"; + + # Hack to strip database from function calls in SQL + $sql =~ s#`\w+`\.(`\w+`\()##g; + + $views{ $view_name }{'order'} = ++$view_order; + $views{ $view_name }{'name'} = $view_name; + $views{ $view_name }{'sql'} = $sql; + } + +replace : /or replace/i + +algorithm : /algorithm/i /=/ WORD + { + $return = "$item[1]=$item[3]"; + } + +not_delimiter : /.*?(?=$delimiter)/is + +create_definition : constraint + | index + | field + | comment + | + +comment : /^\s*(?:#|-{2}).*\n/ + { + my $comment = $item[1]; + $comment =~ s/^\s*(#|--)\s*//; + $comment =~ s/\s*$//; + $return = $comment; + } + +comment : /\/\*/ /.*?\*\//s + { + my $comment = $item[2]; + $comment = substr($comment, 0, -2); + $comment =~ s/^\s*|\s*$//g; + $return = $comment; + } + +field_comment : /^\s*(?:#|-{2}).*\n/ + { + my $comment = $item[1]; + $comment =~ s/^\s*(#|--)\s*//; + $comment =~ s/\s*$//; + $return = $comment; + } + + +field_comment2 : /comment/i /'.*?'/ + { + my $comment = $item[2]; + $comment =~ s/^'//; + $comment =~ s/'$//; + $return = $comment; + } + +blank : /\s*/ + +field : field_comment(s?) field_name data_type field_qualifier(s?) field_comment2(?) reference_definition(?) on_update(?) field_comment(s?) + { + my %qualifiers = map { %$_ } @{ $item{'field_qualifier(s?)'} || [] }; + if ( my @type_quals = @{ $item{'data_type'}{'qualifiers'} || [] } ) { + $qualifiers{ $_ } = 1 for @type_quals; + } + + my $null = defined $qualifiers{'not_null'} + ? $qualifiers{'not_null'} : 1; + delete $qualifiers{'not_null'}; + + my @comments = ( @{ $item[1] }, @{ $item[5] }, @{ $item[8] } ); + + $return = { + supertype => 'field', + name => $item{'field_name'}, + data_type => $item{'data_type'}{'type'}, + size => $item{'data_type'}{'size'}, + list => $item{'data_type'}{'list'}, + constraints => $item{'reference_definition(?)'}, + comments => [ @comments ], + %qualifiers, + } + } + | + +field_qualifier : not_null + { + $return = { + is_nullable => $item{'not_null'}, + } + } + +field_qualifier : default_val + { + $return = { + default => $item{'default_val'}, + } + } + +field_qualifier : auto_inc + { + $return = { + is_auto_inc => $item{'auto_inc'}, + } + } + +field_qualifier : primary_key + { + $return = { + is_primary_key => $item{'primary_key'}, + } + } + +field_qualifier : unsigned + { + $return = { + is_unsigned => $item{'unsigned'}, + } + } + +field_qualifier : /character set/i WORD + { + $return = { + 'CHARACTER SET' => $item[2], + } + } + +field_qualifier : /collate/i WORD + { + $return = { + COLLATE => $item[2], + } + } + +field_qualifier : /on update/i CURRENT_TIMESTAMP + { + $return = { + 'ON UPDATE' => $item[2], + } + } + +field_qualifier : /unique/i KEY(?) + { + $return = { + is_unique => 1, + } + } + +field_qualifier : KEY + { + $return = { + has_index => 1, + } + } + +reference_definition : /references/i table_name parens_field_list(?) match_type(?) on_delete(?) on_update(?) + { + $return = { + type => 'foreign_key', + reference_table => $item[2], + reference_fields => $item[3][0], + match_type => $item[4][0], + on_delete => $item[5][0], + on_update => $item[6][0], + } + } + +match_type : /match full/i { 'full' } + | + /match partial/i { 'partial' } + +on_delete : /on delete/i reference_option + { $item[2] } + +on_update : + /on update/i 'CURRENT_TIMESTAMP' + { $item[2] } + | + /on update/i reference_option + { $item[2] } + +reference_option: /restrict/i | + /cascade/i | + /set null/i | + /no action/i | + /set default/i + { $item[1] } + +index : normal_index + | fulltext_index + | spatial_index + | + +table_name : NAME + +field_name : NAME + +index_name : NAME + +data_type : WORD parens_value_list(s?) type_qualifier(s?) + { + my $type = $item[1]; + my $size; # field size, applicable only to non-set fields + my $list; # set list, applicable only to sets (duh) + + if ( uc($type) =~ /^(SET|ENUM)$/ ) { + $size = undef; + $list = $item[2][0]; + } + else { + $size = $item[2][0][0]; + $list = []; + } + + + $return = { + type => $type, + size => $size, + list => $list, + qualifiers => $item[3], + } + } + +parens_field_list : '(' field_name(s /,/) ')' + { $item[2] } + +parens_value_list : '(' VALUE(s /,/) ')' + { $item[2] } + +type_qualifier : /(BINARY|UNSIGNED|ZEROFILL)/i + { lc $item[1] } + +field_type : WORD + +create_index : /create/i /index/i + +not_null : /not null/i + { $return = 0 } + | + /null/i + { $return = 1 } + +unsigned : /unsigned/i { $return = 0 } + +#default_val : /default/i /(?:')?[\s\w\d:.-]*(?:')?/ +# { +# $item[2] =~ s/'//g; +# $return = $item[2]; +# } + +default_val : + /default/i 'CURRENT_TIMESTAMP' + { + $return = \$item[2]; + } + | + /default/i /'(?:.*?(?:\\'|''))*.*?'|(?:')?[\w\d:.-]*(?:')?/ + { + $item[2] =~ s/^\s*'|'\s*$//g; + $return = $item[2]; + } + +auto_inc : /auto_increment/i { 1 } + +primary_key : /primary/i /key/i { 1 } + +constraint : primary_key_def + | unique_key_def + | foreign_key_def + | + +foreign_key_def : foreign_key_def_begin parens_field_list reference_definition + { + $return = { + supertype => 'constraint', + type => 'foreign_key', + name => $item[1], + fields => $item[2], + %{ $item{'reference_definition'} }, + } + } + +foreign_key_def_begin : /constraint/i /foreign key/i WORD + { $return = $item[3] } + | + /constraint/i NAME /foreign key/i + { $return = $item[2] } + | + /constraint/i /foreign key/i + { $return = '' } + | + /foreign key/i WORD + { $return = $item[2] } + | + /foreign key/i + { $return = '' } + +primary_key_def : primary_key index_name(?) '(' name_with_opt_paren(s /,/) ')' + { + $return = { + supertype => 'constraint', + name => $item{'index_name(?)'}[0], + type => 'primary_key', + fields => $item[4], + }; + } + +unique_key_def : UNIQUE KEY(?) index_name(?) '(' name_with_opt_paren(s /,/) ')' + { + $return = { + supertype => 'constraint', + name => $item{'index_name(?)'}[0], + type => 'unique', + fields => $item[5], + } + } + +normal_index : KEY index_name(?) '(' name_with_opt_paren(s /,/) ')' + { + $return = { + supertype => 'index', + type => 'normal', + name => $item{'index_name(?)'}[0], + fields => $item[4], + } + } + +fulltext_index : /fulltext/i KEY(?) index_name(?) '(' name_with_opt_paren(s /,/) ')' + { + $return = { + supertype => 'index', + type => 'fulltext', + name => $item{'index_name(?)'}[0], + fields => $item[5], + } + } + +spatial_index : /spatial/i KEY(?) index_name(?) '(' name_with_opt_paren(s /,/) ')' + { + $return = { + supertype => 'index', + type => 'spatial', + name => $item{'index_name(?)'}[0], + fields => $item[5], + } + } + +name_with_opt_paren : NAME parens_value_list(s?) + { $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] } + +UNIQUE : /unique/i + +KEY : /key/i | /index/i + +table_option : /comment/i /=/ /'.*?'/ + { + my $comment = $item[3]; + $comment =~ s/^'//; + $comment =~ s/'$//; + $return = { comment => $comment }; + } + | /(default )?(charset|character set)/i /\s*=?\s*/ WORD + { + $return = { 'CHARACTER SET' => $item[3] }; + } + | /collate/i WORD + { + $return = { 'COLLATE' => $item[2] } + } + | /union/i /\s*=\s*/ '(' table_name(s /,/) ')' + { + $return = { $item[1] => $item[4] }; + } + | WORD /\s*=\s*/ MAYBE_QUOTED_WORD + { + $return = { $item[1] => $item[3] }; + } + +MAYBE_QUOTED_WORD: /\w+/ + | /'(\w+)'/ + { $return = $1 } + | /"(\w+)"/ + { $return = $1 } + +default : /default/i + +ADD : /add/i + +ALTER : /alter/i + +CREATE : /create/i + +TEMPORARY : /temporary/i + +TABLE : /table/i + +WORD : /\w+/ + +DIGITS : /\d+/ + +COMMA : ',' + +BACKTICK : '`' + +DOUBLE_QUOTE: '"' + +NAME : BACKTICK /[^`]+/ BACKTICK + { $item[2] } + | DOUBLE_QUOTE /[^"]+/ DOUBLE_QUOTE + { $item[2] } + | /\w+/ + { $item[1] } + +VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/ + { $item[1] } + | /'.*?'/ + { + # remove leading/trailing quotes + my $val = $item[1]; + $val =~ s/^['"]|['"]$//g; + $return = $val; + } + | /NULL/ + { 'NULL' } + +CURRENT_TIMESTAMP : /current_timestamp(\(\))?/i + | /now\(\)/i + { 'CURRENT_TIMESTAMP' } +!; +} +}