update for version 1.0.1

This commit is contained in:
sujitprasad
2015-10-23 14:15:29 +05:30
parent 82b878e93b
commit 3d425dc380
8348 changed files with 10020 additions and 4171 deletions

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What do all those files mean?
=============================
* `zend_language_parser.phpy`: PHP grammer written in a pseudo language
* `analyze.php`: Analyzes the `.phpy`-grammer and outputs some info about it
* `rebuildParser.php`: Preprocesses the `.phpy`-grammar and builds the parser using `kmyacc`
* `kmyacc.php.parser`: A `kmyacc` parser prototype file for PHP
.phpy pseudo language
=====================
The `.phpy` file is a normal grammer in `kmyacc` (`yacc`) style, with some transformations
applied to it:
* Nodes are created using the syntax `Name[..., ...]`. This is transformed into
`new Name(..., ..., attributes())`
* Some function-like constructs are resolved (see `rebuildParser.php` for a list)
* Associative arrays are written as `[key: value, ...]`, which is transformed to
`array('key' => value, ...)`
Building the parser
===================
In order to rebuild the parser, you need [moriyoshi's fork of kmyacc](https://github.com/moriyoshi/kmyacc-forked).
After you compiled/installed it, run the `rebuildParser.php` script.
By default only the `Parser.php` is built. If you want to additionally emit debug symbols and create `y.output`, run the
script with `--debug`. If you want to retain the preprocessed grammar pass `--keep-tmp-grammar`.

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<?php
const GRAMMAR_FILE = './zend_language_parser.phpy';
const LIB = '(?(DEFINE)
(?<singleQuotedString>\'[^\\\\\']*+(?:\\\\.[^\\\\\']*+)*+\')
(?<doubleQuotedString>"[^\\\\"]*+(?:\\\\.[^\\\\"]*+)*+")
(?<string>(?&singleQuotedString)|(?&doubleQuotedString))
(?<comment>/\*[^*]*+(?:\*(?!/)[^*]*+)*+\*/)
(?<code>\{[^\'"/{}]*+(?:(?:(?&string)|(?&comment)|(?&code)|/)[^\'"/{}]*+)*+})
)';
const RULE_BLOCK = '(?<name>[a-z_]++):(?<rules>[^\'"/{};]*+(?:(?:(?&string)|(?&comment)|(?&code)|/|})[^\'"/{};]*+)*+);';
$usedTerminals = array_flip(array(
'T_VARIABLE', 'T_STRING', 'T_INLINE_HTML', 'T_ENCAPSED_AND_WHITESPACE',
'T_LNUMBER', 'T_DNUMBER', 'T_CONSTANT_ENCAPSED_STRING', 'T_STRING_VARNAME', 'T_NUM_STRING'
));
$unusedNonterminals = array_flip(array(
'case_separator', 'optional_comma'
));
function regex($regex) {
return '~' . LIB . '(?:' . str_replace('~', '\~', $regex) . ')~';
}
function magicSplit($regex, $string) {
$pieces = preg_split(regex('(?:(?&string)|(?&comment)|(?&code))(*SKIP)(*FAIL)|' . $regex), $string);
foreach ($pieces as &$piece) {
$piece = trim($piece);
}
return array_filter($pieces);
}
echo '<pre>';
////////////////////
////////////////////
////////////////////
list($defs, $ruleBlocks) = magicSplit('%%', file_get_contents(GRAMMAR_FILE));
if ('' !== trim(preg_replace(regex(RULE_BLOCK), '', $ruleBlocks))) {
die('Not all rule blocks were properly recognized!');
}
preg_match_all(regex(RULE_BLOCK), $ruleBlocks, $ruleBlocksMatches, PREG_SET_ORDER);
foreach ($ruleBlocksMatches as $match) {
$ruleBlockName = $match['name'];
$rules = magicSplit('\|', $match['rules']);
foreach ($rules as &$rule) {
$parts = magicSplit('\s+', $rule);
$usedParts = array();
foreach ($parts as $part) {
if ('{' === $part[0]) {
preg_match_all('~\$([0-9]+)~', $part, $backReferencesMatches, PREG_SET_ORDER);
foreach ($backReferencesMatches as $match) {
$usedParts[$match[1]] = true;
}
}
}
$i = 1;
foreach ($parts as &$part) {
if ('/' === $part[0]) {
continue;
}
if (isset($usedParts[$i])) {
if ('\'' === $part[0] || '{' === $part[0]
|| (ctype_upper($part[0]) && !isset($usedTerminals[$part]))
|| (ctype_lower($part[0]) && isset($unusedNonterminals[$part]))
) {
$part = '<span style="background-color: red; color: white;">' . $part . '</span>';
} else {
$part = '<strong><em>' . $part . '</em></strong>';
}
} elseif ((ctype_upper($part[0]) && isset($usedTerminals[$part]))
|| (ctype_lower($part[0]) && !isset($unusedNonterminals[$part]))
) {
$part = '<span style="background-color: blue; color: white;">' . $part . '</span>';
}
++$i;
}
$rule = implode(' ', $parts);
}
echo $ruleBlockName, ':', "\n", ' ', implode("\n" . ' | ', $rules), "\n", ';', "\n\n";
}

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<?php
$meta #
#semval($) $this->semValue
#semval($,%t) $this->semValue
#semval(%n) $this->stackPos-(%l-%n)
#semval(%n,%t) $this->stackPos-(%l-%n)
namespace PhpParser;
#include;
/* This is an automatically GENERATED file, which should not be manually edited.
* Instead edit one of the following:
* * the grammar file grammar/zend_language_parser.phpy
* * the skeleton file grammar/kymacc.php.parser
* * the preprocessing script grammar/rebuildParser.php
*/
class Parser extends ParserAbstract
{
protected $tokenToSymbolMapSize = #(YYMAXLEX);
protected $actionTableSize = #(YYLAST);
protected $gotoTableSize = #(YYGLAST);
protected $invalidSymbol = #(YYBADCH);
protected $errorSymbol = #(YYINTERRTOK);
protected $defaultAction = #(YYDEFAULT);
protected $unexpectedTokenRule = #(YYUNEXPECTED);
protected $YY2TBLSTATE = #(YY2TBLSTATE);
protected $YYNLSTATES = #(YYNLSTATES);
#tokenval
const %s = %n;
#endtokenval
protected $symbolToName = array(
#listvar terminals
);
protected $tokenToSymbol = array(
#listvar yytranslate
);
protected $action = array(
#listvar yyaction
);
protected $actionCheck = array(
#listvar yycheck
);
protected $actionBase = array(
#listvar yybase
);
protected $actionDefault = array(
#listvar yydefault
);
protected $goto = array(
#listvar yygoto
);
protected $gotoCheck = array(
#listvar yygcheck
);
protected $gotoBase = array(
#listvar yygbase
);
protected $gotoDefault = array(
#listvar yygdefault
);
protected $ruleToNonTerminal = array(
#listvar yylhs
);
protected $ruleToLength = array(
#listvar yylen
);
#if -t
protected $productions = array(
#production-strings;
);
#endif
#reduce
protected function reduceRule%n() {
%b
}
#noact
protected function reduceRule%n() {
$this->semValue = $this->semStack[$this->stackPos];
}
#endreduce
}
#tailcode;

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<?php
$grammarFile = __DIR__ . '/zend_language_parser.phpy';
$skeletonFile = __DIR__ . '/kmyacc.php.parser';
$tmpGrammarFile = __DIR__ . '/tmp_parser.phpy';
$tmpResultFile = __DIR__ . '/tmp_parser.php';
$parserResultFile = __DIR__ . '/../lib/PhpParser/Parser.php';
// check for kmyacc.exe binary in this directory, otherwise fall back to global name
$kmyacc = __DIR__ . '/kmyacc.exe';
if (!file_exists($kmyacc)) {
$kmyacc = 'kmyacc';
}
$options = array_flip($argv);
$optionDebug = isset($options['--debug']);
$optionKeepTmpGrammar = isset($options['--keep-tmp-grammar']);
///////////////////////////////
/// Utility regex constants ///
///////////////////////////////
const LIB = '(?(DEFINE)
(?<singleQuotedString>\'[^\\\\\']*+(?:\\\\.[^\\\\\']*+)*+\')
(?<doubleQuotedString>"[^\\\\"]*+(?:\\\\.[^\\\\"]*+)*+")
(?<string>(?&singleQuotedString)|(?&doubleQuotedString))
(?<comment>/\*[^*]*+(?:\*(?!/)[^*]*+)*+\*/)
(?<code>\{[^\'"/{}]*+(?:(?:(?&string)|(?&comment)|(?&code)|/)[^\'"/{}]*+)*+})
)';
const PARAMS = '\[(?<params>[^[\]]*+(?:\[(?&params)\][^[\]]*+)*+)\]';
const ARGS = '\((?<args>[^()]*+(?:\((?&args)\)[^()]*+)*+)\)';
///////////////////
/// Main script ///
///////////////////
echo 'Building temporary preproprocessed grammar file.', "\n";
$grammarCode = file_get_contents($grammarFile);
$grammarCode = resolveNodes($grammarCode);
$grammarCode = resolveMacros($grammarCode);
$grammarCode = resolveArrays($grammarCode);
$grammarCode = resolveStackAccess($grammarCode);
file_put_contents($tmpGrammarFile, $grammarCode);
$additionalArgs = $optionDebug ? '-t -v' : '';
echo "Building parser.\n";
$output = trim(shell_exec("$kmyacc $additionalArgs -l -m $skeletonFile $tmpGrammarFile 2>&1"));
echo "Output: \"$output\"\n";
$resultCode = file_get_contents($tmpResultFile);
$resultCode = removeTrailingWhitespace($resultCode);
ensureDirExists(dirname($parserResultFile));
file_put_contents($parserResultFile, $resultCode);
unlink($tmpResultFile);
if (!$optionKeepTmpGrammar) {
unlink($tmpGrammarFile);
}
///////////////////////////////
/// Preprocessing functions ///
///////////////////////////////
function resolveNodes($code) {
return preg_replace_callback(
'~(?<name>[A-Z][a-zA-Z_\\\\]++)\s*' . PARAMS . '~',
function($matches) {
// recurse
$matches['params'] = resolveNodes($matches['params']);
$params = magicSplit(
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
$matches['params']
);
$paramCode = '';
foreach ($params as $param) {
$paramCode .= $param . ', ';
}
return 'new ' . $matches['name'] . '(' . $paramCode . 'attributes())';
},
$code
);
}
function resolveMacros($code) {
return preg_replace_callback(
'~\b(?<!::|->)(?!array\()(?<name>[a-z][A-Za-z]++)' . ARGS . '~',
function($matches) {
// recurse
$matches['args'] = resolveMacros($matches['args']);
$name = $matches['name'];
$args = magicSplit(
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
$matches['args']
);
if ('attributes' == $name) {
assertArgs(0, $args, $name);
return '$this->startAttributeStack[#1] + $this->endAttributes';
}
if ('init' == $name) {
return '$$ = array(' . implode(', ', $args) . ')';
}
if ('push' == $name) {
assertArgs(2, $args, $name);
return $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0];
}
if ('pushNormalizing' == $name) {
assertArgs(2, $args, $name);
return 'if (is_array(' . $args[1] . ')) { $$ = array_merge(' . $args[0] . ', ' . $args[1] . '); } else { ' . $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0] . '; }';
}
if ('toArray' == $name) {
assertArgs(1, $args, $name);
return 'is_array(' . $args[0] . ') ? ' . $args[0] . ' : array(' . $args[0] . ')';
}
if ('parseVar' == $name) {
assertArgs(1, $args, $name);
return 'substr(' . $args[0] . ', 1)';
}
if ('parseEncapsed' == $name) {
assertArgs(2, $args, $name);
return 'foreach (' . $args[0] . ' as &$s) { if (is_string($s)) { $s = Node\Scalar\String_::parseEscapeSequences($s, ' . $args[1] . '); } }';
}
if ('parseEncapsedDoc' == $name) {
assertArgs(1, $args, $name);
return 'foreach (' . $args[0] . ' as &$s) { if (is_string($s)) { $s = Node\Scalar\String_::parseEscapeSequences($s, null); } } $s = preg_replace(\'~(\r\n|\n|\r)\z~\', \'\', $s); if (\'\' === $s) array_pop(' . $args[0] . ');';
}
return $matches[0];
},
$code
);
}
function assertArgs($num, $args, $name) {
if ($num != count($args)) {
die('Wrong argument count for ' . $name . '().');
}
}
function resolveArrays($code) {
return preg_replace_callback(
'~' . PARAMS . '~',
function ($matches) {
$elements = magicSplit(
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
$matches['params']
);
// don't convert [] to array, it might have different meaning
if (empty($elements)) {
return $matches[0];
}
$elementCodes = array();
foreach ($elements as $element) {
// convert only arrays where all elements have keys
if (false === strpos($element, ':')) {
return $matches[0];
}
list($key, $value) = explode(':', $element, 2);
$elementCodes[] = "'" . $key . "' =>" . $value;
}
return 'array(' . implode(', ', $elementCodes) . ')';
},
$code
);
}
function resolveStackAccess($code) {
$code = preg_replace('/\$\d+/', '$this->semStack[$0]', $code);
$code = preg_replace('/#(\d+)/', '$$1', $code);
return $code;
}
function removeTrailingWhitespace($code) {
$lines = explode("\n", $code);
$lines = array_map('rtrim', $lines);
return implode("\n", $lines);
}
function ensureDirExists($dir) {
if (!is_dir($dir)) {
mkdir($dir, 0777, true);
}
}
//////////////////////////////
/// Regex helper functions ///
//////////////////////////////
function regex($regex) {
return '~' . LIB . '(?:' . str_replace('~', '\~', $regex) . ')~';
}
function magicSplit($regex, $string) {
$pieces = preg_split(regex('(?:(?&string)|(?&comment)|(?&code))(*SKIP)(*FAIL)|' . $regex), $string);
foreach ($pieces as &$piece) {
$piece = trim($piece);
}
return array_filter($pieces);
}

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%pure_parser
%expect 2
%left T_INCLUDE T_INCLUDE_ONCE T_EVAL T_REQUIRE T_REQUIRE_ONCE
%left ','
%left T_LOGICAL_OR
%left T_LOGICAL_XOR
%left T_LOGICAL_AND
%right T_PRINT
%right T_YIELD
%right T_YIELD_FROM
%left '=' T_PLUS_EQUAL T_MINUS_EQUAL T_MUL_EQUAL T_DIV_EQUAL T_CONCAT_EQUAL T_MOD_EQUAL T_AND_EQUAL T_OR_EQUAL T_XOR_EQUAL T_SL_EQUAL T_SR_EQUAL T_POW_EQUAL
%left '?' ':'
%right T_COALESCE
%left T_BOOLEAN_OR
%left T_BOOLEAN_AND
%left '|'
%left '^'
%left '&'
%nonassoc T_IS_EQUAL T_IS_NOT_EQUAL T_IS_IDENTICAL T_IS_NOT_IDENTICAL T_SPACESHIP
%nonassoc '<' T_IS_SMALLER_OR_EQUAL '>' T_IS_GREATER_OR_EQUAL
%left T_SL T_SR
%left '+' '-' '.'
%left '*' '/' '%'
%right '!'
%nonassoc T_INSTANCEOF
%right '~' T_INC T_DEC T_INT_CAST T_DOUBLE_CAST T_STRING_CAST T_ARRAY_CAST T_OBJECT_CAST T_BOOL_CAST T_UNSET_CAST '@'
%right T_POW
%right '['
%nonassoc T_NEW T_CLONE
%token T_EXIT
%token T_IF
%left T_ELSEIF
%left T_ELSE
%left T_ENDIF
%token T_LNUMBER
%token T_DNUMBER
%token T_STRING
%token T_STRING_VARNAME
%token T_VARIABLE
%token T_NUM_STRING
%token T_INLINE_HTML
%token T_CHARACTER
%token T_BAD_CHARACTER
%token T_ENCAPSED_AND_WHITESPACE
%token T_CONSTANT_ENCAPSED_STRING
%token T_ECHO
%token T_DO
%token T_WHILE
%token T_ENDWHILE
%token T_FOR
%token T_ENDFOR
%token T_FOREACH
%token T_ENDFOREACH
%token T_DECLARE
%token T_ENDDECLARE
%token T_AS
%token T_SWITCH
%token T_ENDSWITCH
%token T_CASE
%token T_DEFAULT
%token T_BREAK
%token T_CONTINUE
%token T_GOTO
%token T_FUNCTION
%token T_CONST
%token T_RETURN
%token T_TRY
%token T_CATCH
%token T_FINALLY
%token T_THROW
%token T_USE
%token T_INSTEADOF
%token T_GLOBAL
%right T_STATIC T_ABSTRACT T_FINAL T_PRIVATE T_PROTECTED T_PUBLIC
%token T_VAR
%token T_UNSET
%token T_ISSET
%token T_EMPTY
%token T_HALT_COMPILER
%token T_CLASS
%token T_TRAIT
%token T_INTERFACE
%token T_EXTENDS
%token T_IMPLEMENTS
%token T_OBJECT_OPERATOR
%token T_DOUBLE_ARROW
%token T_LIST
%token T_ARRAY
%token T_CALLABLE
%token T_CLASS_C
%token T_TRAIT_C
%token T_METHOD_C
%token T_FUNC_C
%token T_LINE
%token T_FILE
%token T_COMMENT
%token T_DOC_COMMENT
%token T_OPEN_TAG
%token T_OPEN_TAG_WITH_ECHO
%token T_CLOSE_TAG
%token T_WHITESPACE
%token T_START_HEREDOC
%token T_END_HEREDOC
%token T_DOLLAR_OPEN_CURLY_BRACES
%token T_CURLY_OPEN
%token T_PAAMAYIM_NEKUDOTAYIM
%token T_NAMESPACE
%token T_NS_C
%token T_DIR
%token T_NS_SEPARATOR
%token T_ELLIPSIS
%{
use PhpParser\Node\Expr;
use PhpParser\Node\Name;
use PhpParser\Node\Scalar;
use PhpParser\Node\Stmt;
%}
%%
start:
top_statement_list { $$ = $this->handleNamespaces($1); }
;
top_statement_list:
top_statement_list top_statement { pushNormalizing($1, $2); }
| /* empty */ { init(); }
;
namespace_name_parts:
T_STRING { init($1); }
| namespace_name_parts T_NS_SEPARATOR T_STRING { push($1, $3); }
;
namespace_name:
namespace_name_parts { $$ = Name[$1]; }
;
top_statement:
statement { $$ = $1; }
| function_declaration_statement { $$ = $1; }
| class_declaration_statement { $$ = $1; }
| T_HALT_COMPILER
{ $$ = Stmt\HaltCompiler[$this->lexer->handleHaltCompiler()]; }
| T_NAMESPACE namespace_name ';' { $$ = Stmt\Namespace_[$2, null]; }
| T_NAMESPACE namespace_name '{' top_statement_list '}' { $$ = Stmt\Namespace_[$2, $4]; }
| T_NAMESPACE '{' top_statement_list '}' { $$ = Stmt\Namespace_[null, $3]; }
| T_USE use_declarations ';' { $$ = Stmt\Use_[$2, Stmt\Use_::TYPE_NORMAL]; }
| T_USE T_FUNCTION use_declarations ';' { $$ = Stmt\Use_[$3, Stmt\Use_::TYPE_FUNCTION]; }
| T_USE T_CONST use_declarations ';' { $$ = Stmt\Use_[$3, Stmt\Use_::TYPE_CONSTANT]; }
| T_CONST constant_declaration_list ';' { $$ = Stmt\Const_[$2]; }
;
use_declarations:
use_declarations ',' use_declaration { push($1, $3); }
| use_declaration { init($1); }
;
use_declaration:
namespace_name { $$ = Stmt\UseUse[$1, null]; }
| namespace_name T_AS T_STRING { $$ = Stmt\UseUse[$1, $3]; }
| T_NS_SEPARATOR namespace_name { $$ = Stmt\UseUse[$2, null]; }
| T_NS_SEPARATOR namespace_name T_AS T_STRING { $$ = Stmt\UseUse[$2, $4]; }
;
constant_declaration_list:
constant_declaration_list ',' constant_declaration { push($1, $3); }
| constant_declaration { init($1); }
;
constant_declaration:
T_STRING '=' static_scalar { $$ = Node\Const_[$1, $3]; }
;
inner_statement_list:
inner_statement_list inner_statement { pushNormalizing($1, $2); }
| /* empty */ { init(); }
;
inner_statement:
statement { $$ = $1; }
| function_declaration_statement { $$ = $1; }
| class_declaration_statement { $$ = $1; }
| T_HALT_COMPILER
{ throw new Error('__HALT_COMPILER() can only be used from the outermost scope', attributes()); }
;
statement:
'{' inner_statement_list '}' { $$ = $2; }
| T_IF parentheses_expr statement elseif_list else_single
{ $$ = Stmt\If_[$2, [stmts: toArray($3), elseifs: $4, else: $5]]; }
| T_IF parentheses_expr ':' inner_statement_list new_elseif_list new_else_single T_ENDIF ';'
{ $$ = Stmt\If_[$2, [stmts: $4, elseifs: $5, else: $6]]; }
| T_WHILE parentheses_expr while_statement { $$ = Stmt\While_[$2, $3]; }
| T_DO statement T_WHILE parentheses_expr ';' { $$ = Stmt\Do_ [$4, toArray($2)]; }
| T_FOR '(' for_expr ';' for_expr ';' for_expr ')' for_statement
{ $$ = Stmt\For_[[init: $3, cond: $5, loop: $7, stmts: $9]]; }
| T_SWITCH parentheses_expr switch_case_list { $$ = Stmt\Switch_[$2, $3]; }
| T_BREAK ';' { $$ = Stmt\Break_[null]; }
| T_BREAK expr ';' { $$ = Stmt\Break_[$2]; }
| T_CONTINUE ';' { $$ = Stmt\Continue_[null]; }
| T_CONTINUE expr ';' { $$ = Stmt\Continue_[$2]; }
| T_RETURN ';' { $$ = Stmt\Return_[null]; }
| T_RETURN expr ';' { $$ = Stmt\Return_[$2]; }
| yield_expr ';' { $$ = $1; }
| T_GLOBAL global_var_list ';' { $$ = Stmt\Global_[$2]; }
| T_STATIC static_var_list ';' { $$ = Stmt\Static_[$2]; }
| T_ECHO expr_list ';' { $$ = Stmt\Echo_[$2]; }
| T_INLINE_HTML { $$ = Stmt\InlineHTML[$1]; }
| expr ';' { $$ = $1; }
| T_UNSET '(' variables_list ')' ';' { $$ = Stmt\Unset_[$3]; }
| T_FOREACH '(' expr T_AS foreach_variable ')' foreach_statement
{ $$ = Stmt\Foreach_[$3, $5[0], [keyVar: null, byRef: $5[1], stmts: $7]]; }
| T_FOREACH '(' expr T_AS variable T_DOUBLE_ARROW foreach_variable ')' foreach_statement
{ $$ = Stmt\Foreach_[$3, $7[0], [keyVar: $5, byRef: $7[1], stmts: $9]]; }
| T_DECLARE '(' declare_list ')' declare_statement { $$ = Stmt\Declare_[$3, $5]; }
| ';' { $$ = array(); /* means: no statement */ }
| T_TRY '{' inner_statement_list '}' catches optional_finally
{ $$ = Stmt\TryCatch[$3, $5, $6]; }
| T_THROW expr ';' { $$ = Stmt\Throw_[$2]; }
| T_GOTO T_STRING ';' { $$ = Stmt\Goto_[$2]; }
| T_STRING ':' { $$ = Stmt\Label[$1]; }
| error { $$ = array(); /* means: no statement */ }
;
catches:
/* empty */ { init(); }
| catches catch { push($1, $2); }
;
catch:
T_CATCH '(' name T_VARIABLE ')' '{' inner_statement_list '}'
{ $$ = Stmt\Catch_[$3, parseVar($4), $7]; }
;
optional_finally:
/* empty */ { $$ = null; }
| T_FINALLY '{' inner_statement_list '}' { $$ = $3; }
;
variables_list:
variable { init($1); }
| variables_list ',' variable { push($1, $3); }
;
optional_ref:
/* empty */ { $$ = false; }
| '&' { $$ = true; }
;
optional_ellipsis:
/* empty */ { $$ = false; }
| T_ELLIPSIS { $$ = true; }
;
function_declaration_statement:
T_FUNCTION optional_ref T_STRING '(' parameter_list ')' optional_return_type '{' inner_statement_list '}'
{ $$ = Stmt\Function_[$3, [byRef: $2, params: $5, returnType: $7, stmts: $9]]; }
;
class_declaration_statement:
class_entry_type T_STRING extends_from implements_list '{' class_statement_list '}'
{ $$ = Stmt\Class_[$2, [type: $1, extends: $3, implements: $4, stmts: $6]]; }
| T_INTERFACE T_STRING interface_extends_list '{' class_statement_list '}'
{ $$ = Stmt\Interface_[$2, [extends: $3, stmts: $5]]; }
| T_TRAIT T_STRING '{' class_statement_list '}'
{ $$ = Stmt\Trait_[$2, $4]; }
;
class_entry_type:
T_CLASS { $$ = 0; }
| T_ABSTRACT T_CLASS { $$ = Stmt\Class_::MODIFIER_ABSTRACT; }
| T_FINAL T_CLASS { $$ = Stmt\Class_::MODIFIER_FINAL; }
;
extends_from:
/* empty */ { $$ = null; }
| T_EXTENDS name { $$ = $2; }
;
interface_extends_list:
/* empty */ { $$ = array(); }
| T_EXTENDS name_list { $$ = $2; }
;
implements_list:
/* empty */ { $$ = array(); }
| T_IMPLEMENTS name_list { $$ = $2; }
;
name_list:
name { init($1); }
| name_list ',' name { push($1, $3); }
;
for_statement:
statement { $$ = toArray($1); }
| ':' inner_statement_list T_ENDFOR ';' { $$ = $2; }
;
foreach_statement:
statement { $$ = toArray($1); }
| ':' inner_statement_list T_ENDFOREACH ';' { $$ = $2; }
;
declare_statement:
statement { $$ = toArray($1); }
| ':' inner_statement_list T_ENDDECLARE ';' { $$ = $2; }
;
declare_list:
declare_list_element { init($1); }
| declare_list ',' declare_list_element { push($1, $3); }
;
declare_list_element:
T_STRING '=' static_scalar { $$ = Stmt\DeclareDeclare[$1, $3]; }
;
switch_case_list:
'{' case_list '}' { $$ = $2; }
| '{' ';' case_list '}' { $$ = $3; }
| ':' case_list T_ENDSWITCH ';' { $$ = $2; }
| ':' ';' case_list T_ENDSWITCH ';' { $$ = $3; }
;
case_list:
/* empty */ { init(); }
| case_list case { push($1, $2); }
;
case:
T_CASE expr case_separator inner_statement_list { $$ = Stmt\Case_[$2, $4]; }
| T_DEFAULT case_separator inner_statement_list { $$ = Stmt\Case_[null, $3]; }
;
case_separator:
':'
| ';'
;
while_statement:
statement { $$ = toArray($1); }
| ':' inner_statement_list T_ENDWHILE ';' { $$ = $2; }
;
elseif_list:
/* empty */ { init(); }
| elseif_list elseif { push($1, $2); }
;
elseif:
T_ELSEIF parentheses_expr statement { $$ = Stmt\ElseIf_[$2, toArray($3)]; }
;
new_elseif_list:
/* empty */ { init(); }
| new_elseif_list new_elseif { push($1, $2); }
;
new_elseif:
T_ELSEIF parentheses_expr ':' inner_statement_list { $$ = Stmt\ElseIf_[$2, $4]; }
;
else_single:
/* empty */ { $$ = null; }
| T_ELSE statement { $$ = Stmt\Else_[toArray($2)]; }
;
new_else_single:
/* empty */ { $$ = null; }
| T_ELSE ':' inner_statement_list { $$ = Stmt\Else_[$3]; }
;
foreach_variable:
variable { $$ = array($1, false); }
| '&' variable { $$ = array($2, true); }
| list_expr { $$ = array($1, false); }
;
parameter_list:
non_empty_parameter_list { $$ = $1; }
| /* empty */ { $$ = array(); }
;
non_empty_parameter_list:
parameter { init($1); }
| non_empty_parameter_list ',' parameter { push($1, $3); }
;
parameter:
optional_param_type optional_ref optional_ellipsis T_VARIABLE
{ $$ = Node\Param[parseVar($4), null, $1, $2, $3]; }
| optional_param_type optional_ref optional_ellipsis T_VARIABLE '=' static_scalar
{ $$ = Node\Param[parseVar($4), $6, $1, $2, $3]; }
;
type:
name { $$ = $1; }
| T_ARRAY { $$ = 'array'; }
| T_CALLABLE { $$ = 'callable'; }
;
optional_param_type:
/* empty */ { $$ = null; }
| type { $$ = $1; }
;
optional_return_type:
/* empty */ { $$ = null; }
| ':' type { $$ = $2; }
;
argument_list:
'(' ')' { $$ = array(); }
| '(' non_empty_argument_list ')' { $$ = $2; }
| '(' yield_expr ')' { $$ = array(Node\Arg[$2, false, false]); }
;
non_empty_argument_list:
argument { init($1); }
| non_empty_argument_list ',' argument { push($1, $3); }
;
argument:
expr { $$ = Node\Arg[$1, false, false]; }
| '&' variable { $$ = Node\Arg[$2, true, false]; }
| T_ELLIPSIS expr { $$ = Node\Arg[$2, false, true]; }
;
global_var_list:
global_var_list ',' global_var { push($1, $3); }
| global_var { init($1); }
;
global_var:
T_VARIABLE { $$ = Expr\Variable[parseVar($1)]; }
| '$' variable { $$ = Expr\Variable[$2]; }
| '$' '{' expr '}' { $$ = Expr\Variable[$3]; }
;
static_var_list:
static_var_list ',' static_var { push($1, $3); }
| static_var { init($1); }
;
static_var:
T_VARIABLE { $$ = Stmt\StaticVar[parseVar($1), null]; }
| T_VARIABLE '=' static_scalar { $$ = Stmt\StaticVar[parseVar($1), $3]; }
;
class_statement_list:
class_statement_list class_statement { push($1, $2); }
| /* empty */ { init(); }
;
class_statement:
variable_modifiers property_declaration_list ';' { $$ = Stmt\Property[$1, $2]; }
| T_CONST constant_declaration_list ';' { $$ = Stmt\ClassConst[$2]; }
| method_modifiers T_FUNCTION optional_ref T_STRING '(' parameter_list ')' optional_return_type method_body
{ $$ = Stmt\ClassMethod[$4, [type: $1, byRef: $3, params: $6, returnType: $8, stmts: $9]]; }
| T_USE name_list trait_adaptations { $$ = Stmt\TraitUse[$2, $3]; }
;
trait_adaptations:
';' { $$ = array(); }
| '{' trait_adaptation_list '}' { $$ = $2; }
;
trait_adaptation_list:
/* empty */ { init(); }
| trait_adaptation_list trait_adaptation { push($1, $2); }
;
trait_adaptation:
trait_method_reference_fully_qualified T_INSTEADOF name_list ';'
{ $$ = Stmt\TraitUseAdaptation\Precedence[$1[0], $1[1], $3]; }
| trait_method_reference T_AS member_modifier T_STRING ';'
{ $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, $4]; }
| trait_method_reference T_AS member_modifier ';'
{ $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, null]; }
| trait_method_reference T_AS T_STRING ';'
{ $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; }
;
trait_method_reference_fully_qualified:
name T_PAAMAYIM_NEKUDOTAYIM T_STRING { $$ = array($1, $3); }
;
trait_method_reference:
trait_method_reference_fully_qualified { $$ = $1; }
| T_STRING { $$ = array(null, $1); }
;
method_body:
';' /* abstract method */ { $$ = null; }
| '{' inner_statement_list '}' { $$ = $2; }
;
variable_modifiers:
non_empty_member_modifiers { $$ = $1; }
| T_VAR { $$ = 0; }
;
method_modifiers:
/* empty */ { $$ = 0; }
| non_empty_member_modifiers { $$ = $1; }
;
non_empty_member_modifiers:
member_modifier { $$ = $1; }
| non_empty_member_modifiers member_modifier { Stmt\Class_::verifyModifier($1, $2); $$ = $1 | $2; }
;
member_modifier:
T_PUBLIC { $$ = Stmt\Class_::MODIFIER_PUBLIC; }
| T_PROTECTED { $$ = Stmt\Class_::MODIFIER_PROTECTED; }
| T_PRIVATE { $$ = Stmt\Class_::MODIFIER_PRIVATE; }
| T_STATIC { $$ = Stmt\Class_::MODIFIER_STATIC; }
| T_ABSTRACT { $$ = Stmt\Class_::MODIFIER_ABSTRACT; }
| T_FINAL { $$ = Stmt\Class_::MODIFIER_FINAL; }
;
property_declaration_list:
property_declaration { init($1); }
| property_declaration_list ',' property_declaration { push($1, $3); }
;
property_declaration:
T_VARIABLE { $$ = Stmt\PropertyProperty[parseVar($1), null]; }
| T_VARIABLE '=' static_scalar { $$ = Stmt\PropertyProperty[parseVar($1), $3]; }
;
expr_list:
expr_list ',' expr { push($1, $3); }
| expr { init($1); }
;
for_expr:
/* empty */ { $$ = array(); }
| expr_list { $$ = $1; }
;
expr:
variable { $$ = $1; }
| list_expr '=' expr { $$ = Expr\Assign[$1, $3]; }
| variable '=' expr { $$ = Expr\Assign[$1, $3]; }
| variable '=' '&' variable { $$ = Expr\AssignRef[$1, $4]; }
| variable '=' '&' new_expr { $$ = Expr\AssignRef[$1, $4]; }
| new_expr { $$ = $1; }
| T_CLONE expr { $$ = Expr\Clone_[$2]; }
| variable T_PLUS_EQUAL expr { $$ = Expr\AssignOp\Plus [$1, $3]; }
| variable T_MINUS_EQUAL expr { $$ = Expr\AssignOp\Minus [$1, $3]; }
| variable T_MUL_EQUAL expr { $$ = Expr\AssignOp\Mul [$1, $3]; }
| variable T_DIV_EQUAL expr { $$ = Expr\AssignOp\Div [$1, $3]; }
| variable T_CONCAT_EQUAL expr { $$ = Expr\AssignOp\Concat [$1, $3]; }
| variable T_MOD_EQUAL expr { $$ = Expr\AssignOp\Mod [$1, $3]; }
| variable T_AND_EQUAL expr { $$ = Expr\AssignOp\BitwiseAnd[$1, $3]; }
| variable T_OR_EQUAL expr { $$ = Expr\AssignOp\BitwiseOr [$1, $3]; }
| variable T_XOR_EQUAL expr { $$ = Expr\AssignOp\BitwiseXor[$1, $3]; }
| variable T_SL_EQUAL expr { $$ = Expr\AssignOp\ShiftLeft [$1, $3]; }
| variable T_SR_EQUAL expr { $$ = Expr\AssignOp\ShiftRight[$1, $3]; }
| variable T_POW_EQUAL expr { $$ = Expr\AssignOp\Pow [$1, $3]; }
| variable T_INC { $$ = Expr\PostInc[$1]; }
| T_INC variable { $$ = Expr\PreInc [$2]; }
| variable T_DEC { $$ = Expr\PostDec[$1]; }
| T_DEC variable { $$ = Expr\PreDec [$2]; }
| expr T_BOOLEAN_OR expr { $$ = Expr\BinaryOp\BooleanOr [$1, $3]; }
| expr T_BOOLEAN_AND expr { $$ = Expr\BinaryOp\BooleanAnd[$1, $3]; }
| expr T_LOGICAL_OR expr { $$ = Expr\BinaryOp\LogicalOr [$1, $3]; }
| expr T_LOGICAL_AND expr { $$ = Expr\BinaryOp\LogicalAnd[$1, $3]; }
| expr T_LOGICAL_XOR expr { $$ = Expr\BinaryOp\LogicalXor[$1, $3]; }
| expr '|' expr { $$ = Expr\BinaryOp\BitwiseOr [$1, $3]; }
| expr '&' expr { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
| expr '^' expr { $$ = Expr\BinaryOp\BitwiseXor[$1, $3]; }
| expr '.' expr { $$ = Expr\BinaryOp\Concat [$1, $3]; }
| expr '+' expr { $$ = Expr\BinaryOp\Plus [$1, $3]; }
| expr '-' expr { $$ = Expr\BinaryOp\Minus [$1, $3]; }
| expr '*' expr { $$ = Expr\BinaryOp\Mul [$1, $3]; }
| expr '/' expr { $$ = Expr\BinaryOp\Div [$1, $3]; }
| expr '%' expr { $$ = Expr\BinaryOp\Mod [$1, $3]; }
| expr T_SL expr { $$ = Expr\BinaryOp\ShiftLeft [$1, $3]; }
| expr T_SR expr { $$ = Expr\BinaryOp\ShiftRight[$1, $3]; }
| expr T_POW expr { $$ = Expr\BinaryOp\Pow [$1, $3]; }
| '+' expr %prec T_INC { $$ = Expr\UnaryPlus [$2]; }
| '-' expr %prec T_INC { $$ = Expr\UnaryMinus[$2]; }
| '!' expr { $$ = Expr\BooleanNot[$2]; }
| '~' expr { $$ = Expr\BitwiseNot[$2]; }
| expr T_IS_IDENTICAL expr { $$ = Expr\BinaryOp\Identical [$1, $3]; }
| expr T_IS_NOT_IDENTICAL expr { $$ = Expr\BinaryOp\NotIdentical [$1, $3]; }
| expr T_IS_EQUAL expr { $$ = Expr\BinaryOp\Equal [$1, $3]; }
| expr T_IS_NOT_EQUAL expr { $$ = Expr\BinaryOp\NotEqual [$1, $3]; }
| expr T_SPACESHIP expr { $$ = Expr\BinaryOp\Spaceship [$1, $3]; }
| expr '<' expr { $$ = Expr\BinaryOp\Smaller [$1, $3]; }
| expr T_IS_SMALLER_OR_EQUAL expr { $$ = Expr\BinaryOp\SmallerOrEqual[$1, $3]; }
| expr '>' expr { $$ = Expr\BinaryOp\Greater [$1, $3]; }
| expr T_IS_GREATER_OR_EQUAL expr { $$ = Expr\BinaryOp\GreaterOrEqual[$1, $3]; }
| expr T_INSTANCEOF class_name_reference { $$ = Expr\Instanceof_[$1, $3]; }
| parentheses_expr { $$ = $1; }
/* we need a separate '(' new_expr ')' rule to avoid problems caused by a s/r conflict */
| '(' new_expr ')' { $$ = $2; }
| expr '?' expr ':' expr { $$ = Expr\Ternary[$1, $3, $5]; }
| expr '?' ':' expr { $$ = Expr\Ternary[$1, null, $4]; }
| expr T_COALESCE expr { $$ = Expr\BinaryOp\Coalesce[$1, $3]; }
| T_ISSET '(' variables_list ')' { $$ = Expr\Isset_[$3]; }
| T_EMPTY '(' expr ')' { $$ = Expr\Empty_[$3]; }
| T_INCLUDE expr { $$ = Expr\Include_[$2, Expr\Include_::TYPE_INCLUDE]; }
| T_INCLUDE_ONCE expr { $$ = Expr\Include_[$2, Expr\Include_::TYPE_INCLUDE_ONCE]; }
| T_EVAL parentheses_expr { $$ = Expr\Eval_[$2]; }
| T_REQUIRE expr { $$ = Expr\Include_[$2, Expr\Include_::TYPE_REQUIRE]; }
| T_REQUIRE_ONCE expr { $$ = Expr\Include_[$2, Expr\Include_::TYPE_REQUIRE_ONCE]; }
| T_INT_CAST expr { $$ = Expr\Cast\Int_ [$2]; }
| T_DOUBLE_CAST expr { $$ = Expr\Cast\Double [$2]; }
| T_STRING_CAST expr { $$ = Expr\Cast\String_ [$2]; }
| T_ARRAY_CAST expr { $$ = Expr\Cast\Array_ [$2]; }
| T_OBJECT_CAST expr { $$ = Expr\Cast\Object_ [$2]; }
| T_BOOL_CAST expr { $$ = Expr\Cast\Bool_ [$2]; }
| T_UNSET_CAST expr { $$ = Expr\Cast\Unset_ [$2]; }
| T_EXIT exit_expr { $$ = Expr\Exit_ [$2]; }
| '@' expr { $$ = Expr\ErrorSuppress[$2]; }
| scalar { $$ = $1; }
| array_expr { $$ = $1; }
| scalar_dereference { $$ = $1; }
| '`' backticks_expr '`' { $$ = Expr\ShellExec[$2]; }
| T_PRINT expr { $$ = Expr\Print_[$2]; }
| T_YIELD { $$ = Expr\Yield_[null, null]; }
| T_YIELD_FROM expr { $$ = Expr\YieldFrom[$2]; }
| T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type
'{' inner_statement_list '}'
{ $$ = Expr\Closure[[static: false, byRef: $2, params: $4, uses: $6, returnType: $7, stmts: $9]]; }
| T_STATIC T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type
'{' inner_statement_list '}'
{ $$ = Expr\Closure[[static: true, byRef: $3, params: $5, uses: $7, returnType: $8, stmts: $10]]; }
;
parentheses_expr:
'(' expr ')' { $$ = $2; }
| '(' yield_expr ')' { $$ = $2; }
;
yield_expr:
T_YIELD expr { $$ = Expr\Yield_[$2, null]; }
| T_YIELD expr T_DOUBLE_ARROW expr { $$ = Expr\Yield_[$4, $2]; }
;
array_expr:
T_ARRAY '(' array_pair_list ')' { $$ = Expr\Array_[$3]; }
| '[' array_pair_list ']' { $$ = Expr\Array_[$2]; }
;
scalar_dereference:
array_expr '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| T_CONSTANT_ENCAPSED_STRING '[' dim_offset ']'
{ $$ = Expr\ArrayDimFetch[Scalar\String_[Scalar\String_::parse($1)], $3]; }
| constant '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| scalar_dereference '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
/* alternative array syntax missing intentionally */
;
anonymous_class:
T_CLASS ctor_arguments extends_from implements_list '{' class_statement_list '}'
{ $$ = array(Stmt\Class_[null, [type: 0, extends: $3, implements: $4, stmts: $6]], $2); }
new_expr:
T_NEW class_name_reference ctor_arguments { $$ = Expr\New_[$2, $3]; }
| T_NEW anonymous_class
{ list($class, $ctorArgs) = $2; $$ = Expr\New_[$class, $ctorArgs]; }
;
lexical_vars:
/* empty */ { $$ = array(); }
| T_USE '(' lexical_var_list ')' { $$ = $3; }
;
lexical_var_list:
lexical_var { init($1); }
| lexical_var_list ',' lexical_var { push($1, $3); }
;
lexical_var:
optional_ref T_VARIABLE { $$ = Expr\ClosureUse[parseVar($2), $1]; }
;
function_call:
name argument_list { $$ = Expr\FuncCall[$1, $2]; }
| class_name_or_var T_PAAMAYIM_NEKUDOTAYIM T_STRING argument_list
{ $$ = Expr\StaticCall[$1, $3, $4]; }
| class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '{' expr '}' argument_list
{ $$ = Expr\StaticCall[$1, $4, $6]; }
| static_property argument_list {
if ($1 instanceof Node\Expr\StaticPropertyFetch) {
$$ = Expr\StaticCall[$1->class, Expr\Variable[$1->name], $2];
} elseif ($1 instanceof Node\Expr\ArrayDimFetch) {
$tmp = $1;
while ($tmp->var instanceof Node\Expr\ArrayDimFetch) {
$tmp = $tmp->var;
}
$$ = Expr\StaticCall[$tmp->var->class, $1, $2];
$tmp->var = Expr\Variable[$tmp->var->name];
} else {
throw new \Exception;
}
}
| variable_without_objects argument_list
{ $$ = Expr\FuncCall[$1, $2]; }
| function_call '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
/* alternative array syntax missing intentionally */
;
class_name:
T_STATIC { $$ = Name[$1]; }
| name { $$ = $1; }
;
name:
namespace_name_parts { $$ = Name[$1]; }
| T_NS_SEPARATOR namespace_name_parts { $$ = Name\FullyQualified[$2]; }
| T_NAMESPACE T_NS_SEPARATOR namespace_name_parts { $$ = Name\Relative[$3]; }
;
class_name_reference:
class_name { $$ = $1; }
| dynamic_class_name_reference { $$ = $1; }
;
dynamic_class_name_reference:
object_access_for_dcnr { $$ = $1; }
| base_variable { $$ = $1; }
;
class_name_or_var:
class_name { $$ = $1; }
| reference_variable { $$ = $1; }
;
object_access_for_dcnr:
base_variable T_OBJECT_OPERATOR object_property
{ $$ = Expr\PropertyFetch[$1, $3]; }
| object_access_for_dcnr T_OBJECT_OPERATOR object_property
{ $$ = Expr\PropertyFetch[$1, $3]; }
| object_access_for_dcnr '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| object_access_for_dcnr '{' expr '}' { $$ = Expr\ArrayDimFetch[$1, $3]; }
;
exit_expr:
/* empty */ { $$ = null; }
| '(' ')' { $$ = null; }
| parentheses_expr { $$ = $1; }
;
backticks_expr:
/* empty */ { $$ = array(); }
| T_ENCAPSED_AND_WHITESPACE { $$ = array(Scalar\String_::parseEscapeSequences($1, '`')); }
| encaps_list { parseEncapsed($1, '`'); $$ = $1; }
;
ctor_arguments:
/* empty */ { $$ = array(); }
| argument_list { $$ = $1; }
;
common_scalar:
T_LNUMBER { $$ = Scalar\LNumber[Scalar\LNumber::parse($1)]; }
| T_DNUMBER { $$ = Scalar\DNumber[Scalar\DNumber::parse($1)]; }
| T_CONSTANT_ENCAPSED_STRING { $$ = Scalar\String_[Scalar\String_::parse($1)]; }
| T_LINE { $$ = Scalar\MagicConst\Line[]; }
| T_FILE { $$ = Scalar\MagicConst\File[]; }
| T_DIR { $$ = Scalar\MagicConst\Dir[]; }
| T_CLASS_C { $$ = Scalar\MagicConst\Class_[]; }
| T_TRAIT_C { $$ = Scalar\MagicConst\Trait_[]; }
| T_METHOD_C { $$ = Scalar\MagicConst\Method[]; }
| T_FUNC_C { $$ = Scalar\MagicConst\Function_[]; }
| T_NS_C { $$ = Scalar\MagicConst\Namespace_[]; }
| T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC
{ $$ = Scalar\String_[Scalar\String_::parseDocString($1, $2)]; }
| T_START_HEREDOC T_END_HEREDOC
{ $$ = Scalar\String_['']; }
;
static_scalar:
common_scalar { $$ = $1; }
| class_name T_PAAMAYIM_NEKUDOTAYIM class_const_name { $$ = Expr\ClassConstFetch[$1, $3]; }
| name { $$ = Expr\ConstFetch[$1]; }
| T_ARRAY '(' static_array_pair_list ')' { $$ = Expr\Array_[$3]; }
| '[' static_array_pair_list ']' { $$ = Expr\Array_[$2]; }
| static_operation { $$ = $1; }
;
static_operation:
static_scalar T_BOOLEAN_OR static_scalar { $$ = Expr\BinaryOp\BooleanOr [$1, $3]; }
| static_scalar T_BOOLEAN_AND static_scalar { $$ = Expr\BinaryOp\BooleanAnd[$1, $3]; }
| static_scalar T_LOGICAL_OR static_scalar { $$ = Expr\BinaryOp\LogicalOr [$1, $3]; }
| static_scalar T_LOGICAL_AND static_scalar { $$ = Expr\BinaryOp\LogicalAnd[$1, $3]; }
| static_scalar T_LOGICAL_XOR static_scalar { $$ = Expr\BinaryOp\LogicalXor[$1, $3]; }
| static_scalar '|' static_scalar { $$ = Expr\BinaryOp\BitwiseOr [$1, $3]; }
| static_scalar '&' static_scalar { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
| static_scalar '^' static_scalar { $$ = Expr\BinaryOp\BitwiseXor[$1, $3]; }
| static_scalar '.' static_scalar { $$ = Expr\BinaryOp\Concat [$1, $3]; }
| static_scalar '+' static_scalar { $$ = Expr\BinaryOp\Plus [$1, $3]; }
| static_scalar '-' static_scalar { $$ = Expr\BinaryOp\Minus [$1, $3]; }
| static_scalar '*' static_scalar { $$ = Expr\BinaryOp\Mul [$1, $3]; }
| static_scalar '/' static_scalar { $$ = Expr\BinaryOp\Div [$1, $3]; }
| static_scalar '%' static_scalar { $$ = Expr\BinaryOp\Mod [$1, $3]; }
| static_scalar T_SL static_scalar { $$ = Expr\BinaryOp\ShiftLeft [$1, $3]; }
| static_scalar T_SR static_scalar { $$ = Expr\BinaryOp\ShiftRight[$1, $3]; }
| static_scalar T_POW static_scalar { $$ = Expr\BinaryOp\Pow [$1, $3]; }
| '+' static_scalar %prec T_INC { $$ = Expr\UnaryPlus [$2]; }
| '-' static_scalar %prec T_INC { $$ = Expr\UnaryMinus[$2]; }
| '!' static_scalar { $$ = Expr\BooleanNot[$2]; }
| '~' static_scalar { $$ = Expr\BitwiseNot[$2]; }
| static_scalar T_IS_IDENTICAL static_scalar { $$ = Expr\BinaryOp\Identical [$1, $3]; }
| static_scalar T_IS_NOT_IDENTICAL static_scalar { $$ = Expr\BinaryOp\NotIdentical [$1, $3]; }
| static_scalar T_IS_EQUAL static_scalar { $$ = Expr\BinaryOp\Equal [$1, $3]; }
| static_scalar T_IS_NOT_EQUAL static_scalar { $$ = Expr\BinaryOp\NotEqual [$1, $3]; }
| static_scalar '<' static_scalar { $$ = Expr\BinaryOp\Smaller [$1, $3]; }
| static_scalar T_IS_SMALLER_OR_EQUAL static_scalar { $$ = Expr\BinaryOp\SmallerOrEqual[$1, $3]; }
| static_scalar '>' static_scalar { $$ = Expr\BinaryOp\Greater [$1, $3]; }
| static_scalar T_IS_GREATER_OR_EQUAL static_scalar { $$ = Expr\BinaryOp\GreaterOrEqual[$1, $3]; }
| static_scalar '?' static_scalar ':' static_scalar { $$ = Expr\Ternary[$1, $3, $5]; }
| static_scalar '?' ':' static_scalar { $$ = Expr\Ternary[$1, null, $4]; }
| static_scalar '[' static_scalar ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| '(' static_scalar ')' { $$ = $2; }
;
constant:
name { $$ = Expr\ConstFetch[$1]; }
| class_name_or_var T_PAAMAYIM_NEKUDOTAYIM class_const_name
{ $$ = Expr\ClassConstFetch[$1, $3]; }
;
scalar:
common_scalar { $$ = $1; }
| constant { $$ = $1; }
| '"' encaps_list '"'
{ parseEncapsed($2, '"'); $$ = Scalar\Encapsed[$2]; }
| T_START_HEREDOC encaps_list T_END_HEREDOC
{ parseEncapsedDoc($2); $$ = Scalar\Encapsed[$2]; }
;
class_const_name:
T_STRING { $$ = $1; }
| T_CLASS { $$ = 'class'; }
;
static_array_pair_list:
/* empty */ { $$ = array(); }
| non_empty_static_array_pair_list optional_comma { $$ = $1; }
;
optional_comma:
/* empty */
| ','
;
non_empty_static_array_pair_list:
non_empty_static_array_pair_list ',' static_array_pair { push($1, $3); }
| static_array_pair { init($1); }
;
static_array_pair:
static_scalar T_DOUBLE_ARROW static_scalar { $$ = Expr\ArrayItem[$3, $1, false]; }
| static_scalar { $$ = Expr\ArrayItem[$1, null, false]; }
;
variable:
object_access { $$ = $1; }
| base_variable { $$ = $1; }
| function_call { $$ = $1; }
| new_expr_array_deref { $$ = $1; }
;
new_expr_array_deref:
'(' new_expr ')' '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$2, $5]; }
| new_expr_array_deref '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
/* alternative array syntax missing intentionally */
;
object_access:
variable_or_new_expr T_OBJECT_OPERATOR object_property
{ $$ = Expr\PropertyFetch[$1, $3]; }
| variable_or_new_expr T_OBJECT_OPERATOR object_property argument_list
{ $$ = Expr\MethodCall[$1, $3, $4]; }
| object_access argument_list { $$ = Expr\FuncCall[$1, $2]; }
| object_access '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| object_access '{' expr '}' { $$ = Expr\ArrayDimFetch[$1, $3]; }
;
variable_or_new_expr:
variable { $$ = $1; }
| '(' new_expr ')' { $$ = $2; }
;
variable_without_objects:
reference_variable { $$ = $1; }
| '$' variable_without_objects { $$ = Expr\Variable[$2]; }
;
base_variable:
variable_without_objects { $$ = $1; }
| static_property { $$ = $1; }
;
static_property:
class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '$' reference_variable
{ $$ = Expr\StaticPropertyFetch[$1, $4]; }
| static_property_with_arrays { $$ = $1; }
;
static_property_with_arrays:
class_name_or_var T_PAAMAYIM_NEKUDOTAYIM T_VARIABLE
{ $$ = Expr\StaticPropertyFetch[$1, parseVar($3)]; }
| class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '$' '{' expr '}'
{ $$ = Expr\StaticPropertyFetch[$1, $5]; }
| static_property_with_arrays '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| static_property_with_arrays '{' expr '}' { $$ = Expr\ArrayDimFetch[$1, $3]; }
;
reference_variable:
reference_variable '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| reference_variable '{' expr '}' { $$ = Expr\ArrayDimFetch[$1, $3]; }
| T_VARIABLE { $$ = Expr\Variable[parseVar($1)]; }
| '$' '{' expr '}' { $$ = Expr\Variable[$3]; }
;
dim_offset:
/* empty */ { $$ = null; }
| expr { $$ = $1; }
;
object_property:
T_STRING { $$ = $1; }
| '{' expr '}' { $$ = $2; }
| variable_without_objects { $$ = $1; }
;
list_expr:
T_LIST '(' list_expr_elements ')' { $$ = Expr\List_[$3]; }
;
list_expr_elements:
list_expr_elements ',' list_expr_element { push($1, $3); }
| list_expr_element { init($1); }
;
list_expr_element:
variable { $$ = $1; }
| list_expr { $$ = $1; }
| /* empty */ { $$ = null; }
;
array_pair_list:
/* empty */ { $$ = array(); }
| non_empty_array_pair_list optional_comma { $$ = $1; }
;
non_empty_array_pair_list:
non_empty_array_pair_list ',' array_pair { push($1, $3); }
| array_pair { init($1); }
;
array_pair:
expr T_DOUBLE_ARROW expr { $$ = Expr\ArrayItem[$3, $1, false]; }
| expr { $$ = Expr\ArrayItem[$1, null, false]; }
| expr T_DOUBLE_ARROW '&' variable { $$ = Expr\ArrayItem[$4, $1, true]; }
| '&' variable { $$ = Expr\ArrayItem[$2, null, true]; }
;
encaps_list:
encaps_list encaps_var { push($1, $2); }
| encaps_list T_ENCAPSED_AND_WHITESPACE { push($1, $2); }
| encaps_var { init($1); }
| T_ENCAPSED_AND_WHITESPACE encaps_var { init($1, $2); }
;
encaps_var:
T_VARIABLE { $$ = Expr\Variable[parseVar($1)]; }
| T_VARIABLE '[' encaps_var_offset ']' { $$ = Expr\ArrayDimFetch[Expr\Variable[parseVar($1)], $3]; }
| T_VARIABLE T_OBJECT_OPERATOR T_STRING { $$ = Expr\PropertyFetch[Expr\Variable[parseVar($1)], $3]; }
| T_DOLLAR_OPEN_CURLY_BRACES expr '}' { $$ = Expr\Variable[$2]; }
| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}' { $$ = Expr\Variable[$2]; }
| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '[' expr ']' '}'
{ $$ = Expr\ArrayDimFetch[Expr\Variable[$2], $4]; }
| T_CURLY_OPEN variable '}' { $$ = $2; }
;
encaps_var_offset:
T_STRING { $$ = Scalar\String_[$1]; }
| T_NUM_STRING { $$ = Scalar\String_[$1]; }
| T_VARIABLE { $$ = Expr\Variable[parseVar($1)]; }
;
%%