Simplified parsing process.

10 files changed, 121 insertions, 78 deletions

diff --git a/src/Contexts/ContextMySql50000.php b/src/Contexts/ContextMySql50000.php
index f2357f2..63f4ca2 100644
--- a/src/Contexts/ContextMySql50000.php
+++ b/src/Contexts/ContextMySql50000.php
@@ -159,6 +159,8 @@ class ContextMySql50000 extends Context
         'DEFAULT COLLATE' => 5, 'INDEX DIRECTORY' => 5,
         'DEFAULT CHARACTER SET' => 5,
 
+        'GROUP BY' => 7, 'ORDER BY' => 7,
+
         'XML' => 9,
         'DATE' => 9, 'ENUM' => 9, 'TEXT' => 9, 'TIME' => 9, 'YEAR' => 9,
         'ARRAY' => 9,
diff --git a/src/Contexts/ContextMySql50100.php b/src/Contexts/ContextMySql50100.php
index dcdce84..265979f 100644
--- a/src/Contexts/ContextMySql50100.php
+++ b/src/Contexts/ContextMySql50100.php
@@ -173,6 +173,8 @@ class ContextMySql50100 extends Context
         'DEFAULT COLLATE' => 5, 'INDEX DIRECTORY' => 5,
         'DEFAULT CHARACTER SET' => 5,
 
+        'GROUP BY' => 7, 'ORDER BY' => 7,
+
         'XML' => 9,
         'DATE' => 9, 'ENUM' => 9, 'TEXT' => 9, 'TIME' => 9, 'YEAR' => 9,
         'ARRAY' => 9,
diff --git a/src/Contexts/ContextMySql50500.php b/src/Contexts/ContextMySql50500.php
index 15e079e..3a5496a 100644
--- a/src/Contexts/ContextMySql50500.php
+++ b/src/Contexts/ContextMySql50500.php
@@ -176,6 +176,8 @@ class ContextMySql50500 extends Context
         'DEFAULT COLLATE' => 5, 'INDEX DIRECTORY' => 5,
         'DEFAULT CHARACTER SET' => 5,
 
+        'GROUP BY' => 7, 'ORDER BY' => 7,
+
         'XML' => 9,
         'DATE' => 9, 'ENUM' => 9, 'TEXT' => 9, 'TIME' => 9, 'YEAR' => 9,
         'ARRAY' => 9,
diff --git a/src/Contexts/ContextMySql50600.php b/src/Contexts/ContextMySql50600.php
index 1135e52..d9fcf71 100644
--- a/src/Contexts/ContextMySql50600.php
+++ b/src/Contexts/ContextMySql50600.php
@@ -187,6 +187,8 @@ class ContextMySql50600 extends Context
         'DEFAULT COLLATE' => 5, 'INDEX DIRECTORY' => 5,
         'DEFAULT CHARACTER SET' => 5,
 
+        'GROUP BY' => 7, 'ORDER BY' => 7,
+
         'XML' => 9,
         'DATE' => 9, 'ENUM' => 9, 'TEXT' => 9, 'TIME' => 9, 'YEAR' => 9,
         'ARRAY' => 9,
diff --git a/src/Contexts/ContextMySql50700.php b/src/Contexts/ContextMySql50700.php
index 799ae1b..808de0d 100644
--- a/src/Contexts/ContextMySql50700.php
+++ b/src/Contexts/ContextMySql50700.php
@@ -192,6 +192,8 @@ class ContextMySql50700 extends Context
         'DEFAULT COLLATE' => 5, 'INDEX DIRECTORY' => 5,
         'DEFAULT CHARACTER SET' => 5,
 
+        'GROUP BY' => 7, 'ORDER BY' => 7,
+
         'XML' => 9,
         'DATE' => 9, 'ENUM' => 9, 'TEXT' => 9, 'TIME' => 9, 'YEAR' => 9,
         'ARRAY' => 9,
diff --git a/src/Parser.php b/src/Parser.php
index 2973a03..a5fe233 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -56,32 +56,70 @@ class Parser
      */
     public static $KEYWORD_PARSERS = array(
 
-        // Meta-keywords.
-        /*
-        '_ARRAY'        => 'SqlParser\\Fragments\\ArrayFragment',
-        '_CALL'         => 'SqlParser\\Fragments\\CallKeyword',
-        '_CREATE_DEF'   => 'SqlParser\\Fragments\\CreateDefFragment',
-        '_DATA_TYPE'    => 'SqlParser\\Fragments\\DataTypeFragment',
-        '_FIELD'        => 'SqlParser\\Fragments\\FieldFragment',
-        '_FIELD_DEF'    => 'SqlParser\\Fragments\\FieldDefFragment',
-        '_PARAM_DEF'    => 'SqlParser\\Fragments\\ParamDefFragment',
-        '_OPTIONS'      => 'SqlParser\\Fragments\\OptionsFragment',
-        '_RENAME'       => 'SqlParser\\Fragments\\RenameKeyword',
-        '_SELECT'       => 'SqlParser\\Fragments\\SelectKeyword',
-        */
-
-        'FROM'          => 'SqlParser\\Fragments\\FromKeyword',
-        'GROUP'         => 'SqlParser\\Fragments\\OrderKeyword',
-        'HAVING'        => 'SqlParser\\Fragments\\WhereKeyword',
-        'INTO'          => 'SqlParser\\Fragments\\IntoKeyword',
-        'JOIN'          => 'SqlParser\\Fragments\\JoinKeyword',
-        'LIMIT'         => 'SqlParser\\Fragments\\LimitKeyword',
-        'ORDER'         => 'SqlParser\\Fragments\\OrderKeyword',
-        'PARTITION'     => 'SqlParser\\Fragments\\ArrayFragment',
-        'SET'           => 'SqlParser\\Fragments\\SetKeyword',
-        'VALUE'         => 'SqlParser\\Fragments\\ValuesKeyword',
-        'VALUES'        => 'SqlParser\\Fragments\\ValuesKeyword',
-        'WHERE'         => 'SqlParser\\Fragments\\WhereKeyword',
+        'CALL'          => array(
+            'class'     => 'SqlParser\\Fragments\\CallKeyword',
+            'field'     => 'call',
+        ),
+        'FROM'          => array(
+            'class'     => 'SqlParser\\Fragments\\FromKeyword',
+            'field'     => 'from',
+        ),
+        'GROUP BY'      => array(
+            'class'     => 'SqlParser\\Fragments\\OrderKeyword',
+            'field'     => 'group',
+        ),
+        'HAVING'        => array(
+            'class'     => 'SqlParser\\Fragments\\WhereKeyword',
+            'field'     => 'having',
+        ),
+        'INTO'          => array(
+            'class'     => 'SqlParser\\Fragments\\IntoKeyword',
+            'field'     => 'into',
+        ),
+        'JOIN'          => array(
+            'class'     => 'SqlParser\\Fragments\\JoinKeyword',
+            'field'     => 'join',
+        ),
+        'LIMIT'         => array(
+            'class'     => 'SqlParser\\Fragments\\LimitKeyword',
+            'field'     => 'limit',
+        ),
+        'ORDER BY'      => array(
+            'class'     => 'SqlParser\\Fragments\\OrderKeyword',
+            'field'     => 'order',
+        ),
+        'PARTITION'     => array(
+            'class'     => 'SqlParser\\Fragments\\ArrayFragment',
+            'field'     => 'partition',
+        ),
+        'RENAME'        => array(
+            'class'     => 'SqlParser\\Fragments\\RenameKeyword',
+            'field'     => 'renames',
+        ),
+        'SET'           => array(
+            'class'     => 'SqlParser\\Fragments\\SetKeyword',
+            'field'     => 'set',
+        ),
+        'SELECT'        => array(
+            'class'     => 'SqlParser\\Fragments\\SelectKeyword',
+            'field'     => 'expr',
+        ),
+        'UPDATE'        => array(
+            'class'     => 'SqlParser\\Fragments\\FromKeyword',
+            'field'     => 'from',
+        ),
+        'VALUE'         => array(
+            'class'     => 'SqlParser\\Fragments\\ValuesKeyword',
+            'field'     => 'values',
+        ),
+        'VALUES'        => array(
+            'class'     => 'SqlParser\\Fragments\\ValuesKeyword',
+            'field'     => 'values',
+        ),
+        'WHERE'         => array(
+            'class'     => 'SqlParser\\Fragments\\WhereKeyword',
+            'field'     => 'where',
+        ),
 
     );
 
diff --git a/src/Statement.php b/src/Statement.php
index 13002f4..edbb19e 100644
--- a/src/Statement.php
+++ b/src/Statement.php
@@ -50,6 +50,15 @@ abstract class Statement
      */
     public function parse(Parser $parser, TokensList $list)
     {
+
+        /**
+         * Whether otpions were parsed or not.
+         * For statements that do not have any options this is set to `true` by
+         * default.
+         * @var bool
+         */
+        $parsedOptions = isset(static::$OPTIONS) ? false : true;
+
         for (; $list->idx < $list->count; ++$list->idx) {
 
             /**
@@ -75,12 +84,29 @@ abstract class Statement
              */
             $class = null;
 
+            /**
+             * The name of the field where the result of the parsing is stored.
+             * @var string
+             */
+            $field = null;
+
             if (!empty(Parser::$KEYWORD_PARSERS[$token->value])) {
-                $class = Parser::$KEYWORD_PARSERS[$token->value];
-            } elseif (!empty(Parser::$STATEMENT_PARSERS[$token->value])) {
-                // The keyword we are processing right now is the beginning of a
-                // statement and they are usually handled differently.
-            } else {
+                $class = Parser::$KEYWORD_PARSERS[$token->value]['class'];
+                $field = Parser::$KEYWORD_PARSERS[$token->value]['field'];
+            }
+
+            if (!empty(Parser::$STATEMENT_PARSERS[$token->value])) {
+                if (!$parsedOptions) {
+                    ++$list->idx; // Skipping keyword.
+                    $this->options = OptionsFragment::parse(
+                        $parser, $list,
+                        static::$OPTIONS
+                    );
+                    $parsedOptions = true;
+                }
+            } else if ($class === null) {
+                // There is no parser for this keyword and isn't the beggining
+                // of a statement (so no options) either.
                 $parser->error(
                     'Unrecognized keyword "' . $token->value . '".',
                     $token
@@ -88,26 +114,8 @@ abstract class Statement
                 continue;
             }
 
-            /**
-             * The name of the field where the result is stored.
-             * @var string
-             */
-            $field = strtolower($token->value);
-
-            // Parsing options.
-            if (($class == null) && (isset(static::$OPTIONS))) {
-                ++$list->idx; // Skipping keyword.
-                $this->options = OptionsFragment::parse(
-                    $parser, $list,
-                    static::$OPTIONS
-                );
-            }
-
-            // Keyword specific code.
-            if ($token->value === 'CALL') {
-                ++$list->idx;
-                $this->call = CallKeyword::parse($parser, $list);
-            } elseif ($token->value === 'CREATE') {
+            // Special cases.
+            if ($token->value === 'CREATE') {
                 ++$list->idx;
                 $this->name = CreateDefFragment::parse($parser, $list);
                 if ($this->options->has('TABLE')) {
@@ -158,23 +166,10 @@ abstract class Statement
                     }
                     $class = null; // The statement has been processed here.
                 }
-            } elseif (($token->value === 'GROUP')
-                || ($token->value === 'ORDER')
-            ) {
-                $list->getNextOfTypeAndValue(Token::TYPE_KEYWORD, 'BY');
-            } elseif ($token->value === 'RENAME') {
+            } else if ($token->value === 'RENAME') {
                 $list->getNextOfTypeAndValue(Token::TYPE_KEYWORD, 'TABLE');
-                ++$list->idx;
-                $this->renames = RenameKeyword::parse($parser, $list);
-            } elseif ($token->value === 'SELECT') {
-                ++$list->idx; // Skipping last option.
-                $this->expr = SelectKeyword::parse($parser, $list);
-            } elseif ($token->value === 'UPDATE') {
-                ++$list->idx; // Skipping last option.
-                $this->from = FromKeyword::parse($parser, $list);
             }
 
-            // Finally, processing the keyword (if possible).
             if ($class !== null) {
                 ++$list->idx; // Skipping keyword.
                 $this->$field = $class::parse($parser, $list, array());
diff --git a/tests/data/parseDelete.out b/tests/data/parseDelete.out
index 81cfeb7..9cd4a65 100644
--- a/tests/data/parseDelete.out
+++ b/tests/data/parseDelete.out
@@ -1,7 +1,7 @@
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+a:2:{s:6:"parser";O:16:"SqlParser\Parser":4:{s:4:"list";O:20:"SqlParser\TokensList":3:{s:6:"tokens";a:35:{i:0;O:15:"SqlParser\Token":5:{s:5:"token";s:6:"DELETE";s:5:"value";s:6:"DELETE";s:4:"type";i:1;s:5:"flags";i:3;s:8:"position";i:0;}i:1;O:15:"SqlParser\Token":5:{s:5:"token";s:1:" ";s:5:"value";s:1:" ";s:4:"type";i:3;s:5:"flags";i:0;s:8:"position";i:6;}i:2;O:15:"SqlParser\Token":5:{s:5:"token";s:12:"LOW_PRIORITY";s:5:"value";s:12:"LOW_PRIORITY";s:4:"type";i:1;s:5:"flags";i:3;s:8:"position";i:7;}i:3;O:15:"SqlParser\Token":5:{s:5:"token";s:1:"
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diff --git a/tests/data/parseSelect.out b/tests/data/parseSelect.out
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diff --git a/tests/data/parseSelectErr1.out b/tests/data/parseSelectErr1.out
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