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System	Linux server.atelieruldeit.ro 3.10.0-1160.el7.x86_64 #1 SMP Mon Oct 19 16:18:59 UTC 2020 x86_64
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Edit File : php5.y \| Size : 49.93 KB
%pure_parser %expect 6 %tokens %% start: top_statement_list { $$ = $this->handleNamespaces($1); } ; top_statement_list_ex: top_statement_list_ex top_statement { pushNormalizing($1, $2); } \| /* empty / { init(); } ; top_statement_list: top_statement_list_ex { makeZeroLengthNop($nop, $this->lookaheadStartAttributes); if ($nop !== null) { $1[] = $nop; } $$ = $1; } ; ampersand: T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG \| T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG ; reserved_non_modifiers: T_INCLUDE \| T_INCLUDE_ONCE \| T_EVAL \| T_REQUIRE \| T_REQUIRE_ONCE \| T_LOGICAL_OR \| T_LOGICAL_XOR \| T_LOGICAL_AND \| T_INSTANCEOF \| T_NEW \| T_CLONE \| T_EXIT \| T_IF \| T_ELSEIF \| T_ELSE \| T_ENDIF \| T_ECHO \| T_DO \| T_WHILE \| T_ENDWHILE \| T_FOR \| T_ENDFOR \| T_FOREACH \| T_ENDFOREACH \| T_DECLARE \| T_ENDDECLARE \| T_AS \| T_TRY \| T_CATCH \| T_FINALLY \| T_THROW \| T_USE \| T_INSTEADOF \| T_GLOBAL \| T_VAR \| T_UNSET \| T_ISSET \| T_EMPTY \| T_CONTINUE \| T_GOTO \| T_FUNCTION \| T_CONST \| T_RETURN \| T_PRINT \| T_YIELD \| T_LIST \| T_SWITCH \| T_ENDSWITCH \| T_CASE \| T_DEFAULT \| T_BREAK \| T_ARRAY \| T_CALLABLE \| T_EXTENDS \| T_IMPLEMENTS \| T_NAMESPACE \| T_TRAIT \| T_INTERFACE \| T_CLASS \| T_CLASS_C \| T_TRAIT_C \| T_FUNC_C \| T_METHOD_C \| T_LINE \| T_FILE \| T_DIR \| T_NS_C \| T_HALT_COMPILER \| T_FN \| T_MATCH ; semi_reserved: reserved_non_modifiers \| T_STATIC \| T_ABSTRACT \| T_FINAL \| T_PRIVATE \| T_PROTECTED \| T_PUBLIC ; identifier_ex: T_STRING { $$ = Node\Identifier[$1]; } \| semi_reserved { $$ = Node\Identifier[$1]; } ; identifier: T_STRING { $$ = Node\Identifier[$1]; } ; reserved_non_modifiers_identifier: reserved_non_modifiers { $$ = Node\Identifier[$1]; } ; namespace_name: T_STRING { $$ = Name[$1]; } \| T_NAME_QUALIFIED { $$ = Name[$1]; } ; legacy_namespace_name: namespace_name { $$ = $1; } \| T_NAME_FULLY_QUALIFIED { $$ = Name[substr($1, 1)]; } ; plain_variable: T_VARIABLE { $$ = Expr\Variable[parseVar($1)]; } ; top_statement: statement { $$ = $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]; $$->setAttribute('kind', Stmt\Namespace_::KIND_SEMICOLON); $this->checkNamespace($$); } \| T_NAMESPACE namespace_name '{' top_statement_list '}' { $$ = Stmt\Namespace_[$2, $4]; $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED); $this->checkNamespace($$); } \| T_NAMESPACE '{' top_statement_list '}' { $$ = Stmt\Namespace_[null, $3]; $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED); $this->checkNamespace($$); } \| T_USE use_declarations ';' { $$ = Stmt\Use_[$2, Stmt\Use_::TYPE_NORMAL]; } \| T_USE use_type use_declarations ';' { $$ = Stmt\Use_[$3, $2]; } \| group_use_declaration ';' { $$ = $1; } \| T_CONST constant_declaration_list ';' { $$ = Stmt\Const_[$2]; } ; use_type: T_FUNCTION { $$ = Stmt\Use_::TYPE_FUNCTION; } \| T_CONST { $$ = Stmt\Use_::TYPE_CONSTANT; } ; group_use_declaration: T_USE use_type legacy_namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations '}' { $$ = Stmt\GroupUse[$3, $6, $2]; } \| T_USE legacy_namespace_name T_NS_SEPARATOR '{' inline_use_declarations '}' { $$ = Stmt\GroupUse[$2, $5, Stmt\Use_::TYPE_UNKNOWN]; } ; unprefixed_use_declarations: unprefixed_use_declarations ',' unprefixed_use_declaration { push($1, $3); } \| unprefixed_use_declaration { init($1); } ; use_declarations: use_declarations ',' use_declaration { push($1, $3); } \| use_declaration { init($1); } ; inline_use_declarations: inline_use_declarations ',' inline_use_declaration { push($1, $3); } \| inline_use_declaration { init($1); } ; unprefixed_use_declaration: namespace_name { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); } \| namespace_name T_AS identifier { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); } ; use_declaration: legacy_namespace_name { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); } \| legacy_namespace_name T_AS identifier { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); } ; inline_use_declaration: unprefixed_use_declaration { $$ = $1; $$->type = Stmt\Use_::TYPE_NORMAL; } \| use_type unprefixed_use_declaration { $$ = $2; $$->type = $1; } ; constant_declaration_list: constant_declaration_list ',' constant_declaration { push($1, $3); } \| constant_declaration { init($1); } ; constant_declaration: identifier '=' static_scalar { $$ = Node\Const_[$1, $3]; } ; class_const_list: class_const_list ',' class_const { push($1, $3); } \| class_const { init($1); } ; class_const: identifier_ex '=' static_scalar { $$ = Node\Const_[$1, $3]; } ; inner_statement_list_ex: inner_statement_list_ex inner_statement { pushNormalizing($1, $2); } \| / empty / { init(); } ; inner_statement_list: inner_statement_list_ex { makeZeroLengthNop($nop, $this->lookaheadStartAttributes); if ($nop !== null) { $1[] = $nop; } $$ = $1; } ; inner_statement: statement { $$ = $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()); } ; non_empty_statement: '{' inner_statement_list '}' { if ($2) { $$ = $2; prependLeadingComments($$); } else { makeNop($$, $this->startAttributeStack[#1], $this->endAttributes); if (null === $$) { $$ = array(); } } } \| T_IF parentheses_expr statement elseif_list else_single { $$ = 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 ';' { $$ = Stmt\Return_[$2]; } \| T_GLOBAL global_var_list ';' { $$ = Stmt\Global_[$2]; } \| T_STATIC static_var_list ';' { $$ = Stmt\Static_[$2]; } \| T_ECHO expr_list ';' { $$ = Stmt\Echo_[$2]; } \| T_INLINE_HTML { $$ = Stmt\InlineHTML[$1]; } \| yield_expr ';' { $$ = Stmt\Expression[$1]; } \| expr ';' { $$ = Stmt\Expression[$1]; } \| T_UNSET '(' variables_list ')' ';' { $$ = 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 { $$ = Stmt\Declare_[$3, $5]; } \| T_TRY '{' inner_statement_list '}' catches optional_finally { $$ = Stmt\TryCatch[$3, $5, $6]; $this->checkTryCatch($$); } \| T_THROW expr ';' { $$ = Stmt\Throw_[$2]; } \| T_GOTO identifier ';' { $$ = Stmt\Goto_[$2]; } \| identifier ':' { $$ = Stmt\Label[$1]; } \| expr error { $$ = Stmt\Expression[$1]; } \| error { $$ = array(); / means: no statement / } ; statement: non_empty_statement { $$ = $1; } \| ';' { makeNop($$, $this->startAttributeStack[#1], $this->endAttributes); if ($$ === null) $$ = array(); / means: no statement / } ; catches: / empty / { init(); } \| catches catch { push($1, $2); } ; catch: T_CATCH '(' name plain_variable ')' '{' inner_statement_list '}' { $$ = Stmt\Catch_[array($3), $4, $7]; } ; optional_finally: / empty / { $$ = null; } \| T_FINALLY '{' inner_statement_list '}' { $$ = Stmt\Finally_[$3]; } ; variables_list: variable { init($1); } \| variables_list ',' variable { push($1, $3); } ; optional_ref: / empty / { $$ = false; } \| ampersand { $$ = true; } ; optional_arg_ref: / empty / { $$ = false; } \| T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG { $$ = true; } ; optional_ellipsis: / empty / { $$ = false; } \| T_ELLIPSIS { $$ = true; } ; function_declaration_statement: T_FUNCTION optional_ref identifier '(' parameter_list ')' optional_return_type '{' inner_statement_list '}' { $$ = Stmt\Function_[$3, ['byRef' => $2, 'params' => $5, 'returnType' => $7, 'stmts' => $9]]; } ; class_declaration_statement: class_entry_type identifier extends_from implements_list '{' class_statement_list '}' { $$ = Stmt\Class_[$2, ['type' => $1, 'extends' => $3, 'implements' => $4, 'stmts' => $6]]; $this->checkClass($$, #2); } \| T_INTERFACE identifier interface_extends_list '{' class_statement_list '}' { $$ = Stmt\Interface_[$2, ['extends' => $3, 'stmts' => $5]]; $this->checkInterface($$, #2); } \| T_TRAIT identifier '{' class_statement_list '}' { $$ = Stmt\Trait_[$2, ['stmts' => $4]]; } ; class_entry_type: T_CLASS { $$ = 0; } \| T_ABSTRACT T_CLASS { $$ = Stmt\Class_::MODIFIER_ABSTRACT; } \| T_FINAL T_CLASS { $$ = Stmt\Class_::MODIFIER_FINAL; } ; extends_from: / empty / { $$ = null; } \| T_EXTENDS class_name { $$ = $2; } ; interface_extends_list: / empty / { $$ = array(); } \| T_EXTENDS class_name_list { $$ = $2; } ; implements_list: / empty / { $$ = array(); } \| T_IMPLEMENTS class_name_list { $$ = $2; } ; class_name_list: class_name { init($1); } \| class_name_list ',' class_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: non_empty_statement { $$ = toArray($1); } \| ';' { $$ = null; } \| ':' inner_statement_list T_ENDDECLARE ';' { $$ = $2; } ; declare_list: declare_list_element { init($1); } \| declare_list ',' declare_list_element { push($1, $3); } ; declare_list_element: identifier '=' static_scalar { $$ = 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_ex { $$ = Stmt\Case_[$2, $4]; } \| T_DEFAULT case_separator inner_statement_list_ex { $$ = 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 { $$ = array($1, false); } \| ampersand variable { $$ = array($2, true); } \| list_expr { $$ = array($1, false); } ; parameter_list: non_empty_parameter_list { $$ = $1; } \| / empty / { $$ = array(); } ; non_empty_parameter_list: parameter { init($1); } \| non_empty_parameter_list ',' parameter { push($1, $3); } ; parameter: optional_param_type optional_arg_ref optional_ellipsis plain_variable { $$ = Node\Param[$4, null, $1, $2, $3]; $this->checkParam($$); } \| optional_param_type optional_arg_ref optional_ellipsis plain_variable '=' static_scalar { $$ = Node\Param[$4, $6, $1, $2, $3]; $this->checkParam($$); } ; type: name { $$ = $1; } \| T_ARRAY { $$ = Node\Identifier['array']; } \| T_CALLABLE { $$ = Node\Identifier['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]; } \| ampersand 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: plain_variable { $$ = $1; } \| '$' variable { $$ = Expr\Variable[$2]; } \| '$' '{' expr '}' { $$ = Expr\Variable[$3]; } ; static_var_list: static_var_list ',' static_var { push($1, $3); } \| static_var { init($1); } ; static_var: plain_variable { $$ = Stmt\StaticVar[$1, null]; } \| plain_variable '=' static_scalar { $$ = Stmt\StaticVar[$1, $3]; } ; class_statement_list_ex: class_statement_list_ex class_statement { if ($2 !== null) { push($1, $2); } } \| / empty / { init(); } ; class_statement_list: class_statement_list_ex { makeZeroLengthNop($nop, $this->lookaheadStartAttributes); if ($nop !== null) { $1[] = $nop; } $$ = $1; } ; class_statement: variable_modifiers property_declaration_list ';' { $$ = Stmt\Property[$1, $2]; $this->checkProperty($$, #1); } \| T_CONST class_const_list ';' { $$ = Stmt\ClassConst[$2, 0]; } \| method_modifiers T_FUNCTION optional_ref identifier_ex '(' parameter_list ')' optional_return_type method_body { $$ = Stmt\ClassMethod[$4, ['type' => $1, 'byRef' => $3, 'params' => $6, 'returnType' => $8, 'stmts' => $9]]; $this->checkClassMethod($$, #1); } \| T_USE class_name_list trait_adaptations { $$ = 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 class_name_list ';' { $$ = Stmt\TraitUseAdaptation\Precedence[$1[0], $1[1], $3]; } \| trait_method_reference T_AS member_modifier identifier_ex ';' { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, $4]; } \| trait_method_reference T_AS member_modifier ';' { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, null]; } \| trait_method_reference T_AS identifier ';' { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; } \| trait_method_reference T_AS reserved_non_modifiers_identifier ';' { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; } ; trait_method_reference_fully_qualified: name T_PAAMAYIM_NEKUDOTAYIM identifier_ex { $$ = array($1, $3); } ; trait_method_reference: trait_method_reference_fully_qualified { $$ = $1; } \| identifier_ex { $$ = 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 { $$ = $1; } \| non_empty_member_modifiers member_modifier { $this->checkModifier($1, $2, #2); $$ = $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_decl_name: T_VARIABLE { $$ = Node\VarLikeIdentifier[parseVar($1)]; } ; property_declaration: property_decl_name { $$ = Stmt\PropertyProperty[$1, null]; } \| property_decl_name '=' static_scalar { $$ = Stmt\PropertyProperty[$1, $3]; } ; expr_list: expr_list ',' expr { push($1, $3); } \| expr { init($1); } ; for_expr: / empty / { $$ = array(); } \| expr_list { $$ = $1; } ; expr: variable { $$ = $1; } \| list_expr '=' expr { $$ = Expr\Assign[$1, $3]; } \| variable '=' expr { $$ = Expr\Assign[$1, $3]; } \| variable '=' ampersand variable { $$ = Expr\AssignRef[$1, $4]; } \| variable '=' ampersand new_expr { $$ = 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_COALESCE_EQUAL expr { $$ = Expr\AssignOp\Coalesce [$1, $3]; } \| variable T_INC { $$ = 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 { $$ = Expr\BinaryOp\BitwiseOr [$1, $3]; } \| expr T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG expr { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; } \| expr T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG 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 { $attrs = attributes(); $attrs['kind'] = $this->getFloatCastKind($1); $$ = new Expr\Cast\Double($2, $attrs); } \| T_STRING_CAST expr { $$ = 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 { $attrs = attributes(); $attrs['kind'] = strtolower($1) === 'exit' ? Expr\Exit_::KIND_EXIT : Expr\Exit_::KIND_DIE; $$ = new Expr\Exit_($2, $attrs); } \| '@' expr { $$ = 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 { $$ = Expr\Yield_[$4, $2]; } ; array_expr: T_ARRAY '(' array_pair_list ')' { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_LONG; $$ = new Expr\Array_($3, $attrs); } \| '[' array_pair_list ']' { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_SHORT; $$ = new Expr\Array_($2, $attrs); } ; scalar_dereference: array_expr '[' dim_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; } \| T_CONSTANT_ENCAPSED_STRING '[' dim_offset ']' { $attrs = attributes(); $attrs['kind'] = strKind($1); $$ = Expr\ArrayDimFetch[new Scalar\String_(Scalar\String_::parse($1), $attrs), $3]; } \| constant '[' dim_offset ']' { $$ = 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); $this->checkClass($$[0], -1); } ; new_expr: T_NEW class_name_reference ctor_arguments { $$ = 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 ')' { $$ = $3; } ; lexical_var_list: lexical_var { init($1); } \| lexical_var_list ',' lexical_var { push($1, $3); } ; lexical_var: optional_ref plain_variable { $$ = Expr\ClosureUse[$2, $1]; } ; function_call: name argument_list { $$ = Expr\FuncCall[$1, $2]; } \| class_name_or_var T_PAAMAYIM_NEKUDOTAYIM identifier_ex argument_list { $$ = Expr\StaticCall[$1, $3, $4]; } \| class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '{' expr '}' argument_list { $$ = Expr\StaticCall[$1, $4, $6]; } \| static_property argument_list { $$ = $this->fixupPhp5StaticPropCall($1, $2, attributes()); } \| 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: T_STRING { $$ = Name[$1]; } \| T_NAME_QUALIFIED { $$ = Name[$1]; } \| T_NAME_FULLY_QUALIFIED { $$ = Name\FullyQualified[substr($1, 1)]; } \| T_NAME_RELATIVE { $$ = Name\Relative[substr($1, 10)]; } ; 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 { $$ = array(Scalar\EncapsedStringPart[Scalar\String_::parseEscapeSequences($1, '`', false)]); } \| encaps_list { parseEncapsed($1, '`', false); $$ = $1; } ; ctor_arguments: / empty / { $$ = array(); } \| argument_list { $$ = $1; } ; common_scalar: T_LNUMBER { $$ = $this->parseLNumber($1, attributes(), true); } \| T_DNUMBER { $$ = Scalar\DNumber[Scalar\DNumber::parse($1)]; } \| T_CONSTANT_ENCAPSED_STRING { $attrs = attributes(); $attrs['kind'] = strKind($1); $$ = new Scalar\String_(Scalar\String_::parse($1, false), $attrs); } \| T_LINE { $$ = 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 { $$ = Scalar\MagicConst\Namespace_[]; } \| T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), false); } \| T_START_HEREDOC T_END_HEREDOC { $$ = $this->parseDocString($1, '', $2, attributes(), stackAttributes(#2), false); } ; static_scalar: common_scalar { $$ = $1; } \| class_name T_PAAMAYIM_NEKUDOTAYIM identifier_ex { $$ = Expr\ClassConstFetch[$1, $3]; } \| name { $$ = 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 { $$ = Expr\BinaryOp\BitwiseOr [$1, $3]; } \| static_scalar T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG static_scalar { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; } \| static_scalar T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG 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 identifier_ex { $$ = Expr\ClassConstFetch[$1, $3]; } ; scalar: common_scalar { $$ = $1; } \| constant { $$ = $1; } \| '"' encaps_list '"' { $attrs = attributes(); $attrs['kind'] = Scalar\String_::KIND_DOUBLE_QUOTED; parseEncapsed($2, '"', true); $$ = new Scalar\Encapsed($2, $attrs); } \| T_START_HEREDOC encaps_list T_END_HEREDOC { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), true); } ; static_array_pair_list: /* empty / { $$ = 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_simple_name: T_VARIABLE { $var = parseVar($1); $$ = \is_string($var) ? Node\VarLikeIdentifier[$var] : $var; } ; static_property_with_arrays: class_name_or_var T_PAAMAYIM_NEKUDOTAYIM static_property_simple_name { $$ = Expr\StaticPropertyFetch[$1, $3]; } \| class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '$' '{' 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 '}' { $$ = Expr\ArrayDimFetch[$1, $3]; } \| plain_variable { $$ = $1; } \| '$' '{' expr '}' { $$ = Expr\Variable[$3]; } ; dim_offset: / empty / { $$ = null; } \| expr { $$ = $1; } ; object_property: identifier { $$ = $1; } \| '{' expr '}' { $$ = $2; } \| variable_without_objects { $$ = $1; } \| error { $$ = Expr\Error[]; $this->errorState = 2; } ; list_expr: T_LIST '(' list_expr_elements ')' { $$ = Expr\List_[$3]; } ; list_expr_elements: list_expr_elements ',' list_expr_element { push($1, $3); } \| list_expr_element { init($1); } ; list_expr_element: variable { $$ = Expr\ArrayItem[$1, null, false]; } \| list_expr { $$ = Expr\ArrayItem[$1, null, false]; } \| / 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 { $$ = Expr\ArrayItem[$1, null, false]; } \| expr T_DOUBLE_ARROW ampersand variable { $$ = Expr\ArrayItem[$4, $1, true]; } \| ampersand variable { $$ = Expr\ArrayItem[$2, null, true]; } \| T_ELLIPSIS expr { $$ = Expr\ArrayItem[$2, null, false, attributes(), true]; } ; encaps_list: encaps_list encaps_var { push($1, $2); } \| encaps_list encaps_string_part { push($1, $2); } \| encaps_var { init($1); } \| encaps_string_part encaps_var { init($1, $2); } ; encaps_string_part: T_ENCAPSED_AND_WHITESPACE { $$ = Scalar\EncapsedStringPart[$1]; } ; encaps_str_varname: T_STRING_VARNAME { $$ = Expr\Variable[$1]; } ; encaps_var: plain_variable { $$ = $1; } \| plain_variable '[' encaps_var_offset ']' { $$ = Expr\ArrayDimFetch[$1, $3]; } \| plain_variable T_OBJECT_OPERATOR identifier { $$ = Expr\PropertyFetch[$1, $3]; } \| T_DOLLAR_OPEN_CURLY_BRACES expr '}' { $$ = Expr\Variable[$2]; } \| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}' { $$ = Expr\Variable[$2]; } \| T_DOLLAR_OPEN_CURLY_BRACES encaps_str_varname '[' expr ']' '}' { $$ = Expr\ArrayDimFetch[$2, $4]; } \| T_CURLY_OPEN variable '}' { $$ = $2; } ; encaps_var_offset: T_STRING { $$ = Scalar\String_[$1]; } \| T_NUM_STRING { $$ = $this->parseNumString($1, attributes()); } \| plain_variable { $$ = $1; } ; %% Back

Edit File : php5.y | Size : 49.93 KB

%pure_parser
%expect 6

%tokens

start:
    top_statement_list                                      { $$ = $this->handleNamespaces($1); }
;

top_statement_list_ex:
      top_statement_list_ex top_statement                   { pushNormalizing($1, $2); }
    | /* empty */                                           { init(); }
;

top_statement_list:
      top_statement_list_ex
          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
;

ampersand:
      T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG
    | T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG
;

identifier_ex:
      T_STRING                                              { $$ = Node\Identifier[$1]; }
    | semi_reserved                                         { $$ = Node\Identifier[$1]; }
;

identifier:
      T_STRING                                              { $$ = Node\Identifier[$1]; }
;

reserved_non_modifiers_identifier:
      reserved_non_modifiers                                { $$ = Node\Identifier[$1]; }
;

namespace_name:
      T_STRING                                              { $$ = Name[$1]; }
    | T_NAME_QUALIFIED                                      { $$ = Name[$1]; }
;

legacy_namespace_name:
      namespace_name                                        { $$ = $1; }
    | T_NAME_FULLY_QUALIFIED                                { $$ = Name[substr($1, 1)]; }
;

plain_variable:
      T_VARIABLE                                            { $$ = Expr\Variable[parseVar($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 ';'
          { $$ = Stmt\Namespace_[$2, null];
            $$->setAttribute('kind', Stmt\Namespace_::KIND_SEMICOLON);
            $this->checkNamespace($$); }
    | T_NAMESPACE namespace_name '{' top_statement_list '}'
          { $$ = Stmt\Namespace_[$2, $4];
            $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED);
            $this->checkNamespace($$); }
    | T_NAMESPACE '{' top_statement_list '}'
          { $$ = Stmt\Namespace_[null, $3];
            $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED);
            $this->checkNamespace($$); }
    | T_USE use_declarations ';'                            { $$ = Stmt\Use_[$2, Stmt\Use_::TYPE_NORMAL]; }
    | T_USE use_type use_declarations ';'                   { $$ = Stmt\Use_[$3, $2]; }
    | group_use_declaration ';'                             { $$ = $1; }
    | T_CONST constant_declaration_list ';'                 { $$ = Stmt\Const_[$2]; }
;

use_type:
      T_FUNCTION                                            { $$ = Stmt\Use_::TYPE_FUNCTION; }
    | T_CONST                                               { $$ = Stmt\Use_::TYPE_CONSTANT; }
;

group_use_declaration:
      T_USE use_type legacy_namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations '}'
          { $$ = Stmt\GroupUse[$3, $6, $2]; }
    | T_USE legacy_namespace_name T_NS_SEPARATOR '{' inline_use_declarations '}'
          { $$ = Stmt\GroupUse[$2, $5, Stmt\Use_::TYPE_UNKNOWN]; }
;

unprefixed_use_declarations:
      unprefixed_use_declarations ',' unprefixed_use_declaration
          { push($1, $3); }
    | unprefixed_use_declaration                            { init($1); }
;

use_declarations:
      use_declarations ',' use_declaration                  { push($1, $3); }
    | use_declaration                                       { init($1); }
;

inline_use_declarations:
      inline_use_declarations ',' inline_use_declaration    { push($1, $3); }
    | inline_use_declaration                                { init($1); }
;

unprefixed_use_declaration:
      namespace_name
          { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); }
    | namespace_name T_AS identifier
          { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); }
;

use_declaration:
      legacy_namespace_name
          { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); }
    | legacy_namespace_name T_AS identifier
          { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); }
;

inline_use_declaration:
      unprefixed_use_declaration                            { $$ = $1; $$->type = Stmt\Use_::TYPE_NORMAL; }
    | use_type unprefixed_use_declaration                   { $$ = $2; $$->type = $1; }
;

constant_declaration_list:
      constant_declaration_list ',' constant_declaration    { push($1, $3); }
    | constant_declaration                                  { init($1); }
;

constant_declaration:
    identifier '=' static_scalar                            { $$ = Node\Const_[$1, $3]; }
;

class_const_list:
      class_const_list ',' class_const                      { push($1, $3); }
    | class_const                                           { init($1); }
;

class_const:
    identifier_ex '=' static_scalar                         { $$ = Node\Const_[$1, $3]; }
;

inner_statement_list_ex:
      inner_statement_list_ex inner_statement               { pushNormalizing($1, $2); }
    | /* empty */                                           { init(); }
;

inner_statement_list:
      inner_statement_list_ex
          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
;

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()); }
;

non_empty_statement:
      '{' inner_statement_list '}'
    {
        if ($2) {
            $$ = $2; prependLeadingComments($$);
        } else {
            makeNop($$, $this->startAttributeStack[#1], $this->endAttributes);
            if (null === $$) { $$ = array(); }
        }
    }
    | T_IF parentheses_expr statement elseif_list else_single
          { $$ = 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 ';'                                     { $$ = Stmt\Return_[$2]; }
    | T_GLOBAL global_var_list ';'                          { $$ = Stmt\Global_[$2]; }
    | T_STATIC static_var_list ';'                          { $$ = Stmt\Static_[$2]; }
    | T_ECHO expr_list ';'                                  { $$ = Stmt\Echo_[$2]; }
    | T_INLINE_HTML                                         { $$ = Stmt\InlineHTML[$1]; }
    | yield_expr ';'                                        { $$ = Stmt\Expression[$1]; }
    | expr ';'                                              { $$ = Stmt\Expression[$1]; }
    | T_UNSET '(' variables_list ')' ';'                    { $$ = 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      { $$ = Stmt\Declare_[$3, $5]; }
    | T_TRY '{' inner_statement_list '}' catches optional_finally
          { $$ = Stmt\TryCatch[$3, $5, $6]; $this->checkTryCatch($$); }
    | T_THROW expr ';'                                      { $$ = Stmt\Throw_[$2]; }
    | T_GOTO identifier ';'                                 { $$ = Stmt\Goto_[$2]; }
    | identifier ':'                                        { $$ = Stmt\Label[$1]; }
    | expr error                                            { $$ = Stmt\Expression[$1]; }
    | error                                                 { $$ = array(); /* means: no statement */ }
;

statement:
      non_empty_statement                                   { $$ = $1; }
    | ';'
          { makeNop($$, $this->startAttributeStack[#1], $this->endAttributes);
            if ($$ === null) $$ = array(); /* means: no statement */ }
;

catches:
      /* empty */                                           { init(); }
    | catches catch                                         { push($1, $2); }
;

catch:
    T_CATCH '(' name plain_variable ')' '{' inner_statement_list '}'
        { $$ = Stmt\Catch_[array($3), $4, $7]; }
;

optional_finally:
      /* empty */                                           { $$ = null; }
    | T_FINALLY '{' inner_statement_list '}'                { $$ = Stmt\Finally_[$3]; }
;

variables_list:
      variable                                              { init($1); }
    | variables_list ',' variable                           { push($1, $3); }
;

optional_ref:
      /* empty */                                           { $$ = false; }
    | ampersand                                             { $$ = true; }
;

optional_arg_ref:
      /* empty */                                           { $$ = false; }
    | T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG                 { $$ = true; }
;

optional_ellipsis:
      /* empty */                                           { $$ = false; }
    | T_ELLIPSIS                                            { $$ = true; }
;

function_declaration_statement:
    T_FUNCTION optional_ref identifier '(' 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 identifier extends_from implements_list '{' class_statement_list '}'
          { $$ = Stmt\Class_[$2, ['type' => $1, 'extends' => $3, 'implements' => $4, 'stmts' => $6]];
            $this->checkClass($$, #2); }
    | T_INTERFACE identifier interface_extends_list '{' class_statement_list '}'
          { $$ = Stmt\Interface_[$2, ['extends' => $3, 'stmts' => $5]];
            $this->checkInterface($$, #2); }
    | T_TRAIT identifier '{' class_statement_list '}'
          { $$ = Stmt\Trait_[$2, ['stmts' => $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 */                                           { $$ = null; }
    | T_EXTENDS class_name                                  { $$ = $2; }
;

interface_extends_list:
      /* empty */                                           { $$ = array(); }
    | T_EXTENDS class_name_list                             { $$ = $2; }
;

implements_list:
      /* empty */                                           { $$ = array(); }
    | T_IMPLEMENTS class_name_list                          { $$ = $2; }
;

class_name_list:
      class_name                                            { init($1); }
    | class_name_list ',' class_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:
      non_empty_statement                                   { $$ = toArray($1); }
    | ';'                                                   { $$ = null; }
    | ':' inner_statement_list T_ENDDECLARE ';'             { $$ = $2; }
;

declare_list:
      declare_list_element                                  { init($1); }
    | declare_list ',' declare_list_element                 { push($1, $3); }
;

declare_list_element:
      identifier '=' 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_ex    { $$ = Stmt\Case_[$2, $4]; }
    | T_DEFAULT case_separator inner_statement_list_ex      { $$ = 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                                              { $$ = array($1, false); }
    | ampersand variable                                    { $$ = 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_arg_ref optional_ellipsis plain_variable
          { $$ = Node\Param[$4, null, $1, $2, $3]; $this->checkParam($$); }
    | optional_param_type optional_arg_ref optional_ellipsis plain_variable '=' static_scalar
          { $$ = Node\Param[$4, $6, $1, $2, $3]; $this->checkParam($$); }
;

type:
      name                                                  { $$ = $1; }
    | T_ARRAY                                               { $$ = Node\Identifier['array']; }
    | T_CALLABLE                                            { $$ = Node\Identifier['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                                                  { $$ = Node\Arg[$1, false, false]; }
    | ampersand variable                                    { $$ = 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:
      plain_variable                                        { $$ = $1; }
    | '$' variable                                          { $$ = Expr\Variable[$2]; }
    | '$' '{' expr '}'                                      { $$ = Expr\Variable[$3]; }
;

static_var_list:
      static_var_list ',' static_var                        { push($1, $3); }
    | static_var                                            { init($1); }
;

static_var:
      plain_variable                                        { $$ = Stmt\StaticVar[$1, null]; }
    | plain_variable '=' static_scalar                      { $$ = Stmt\StaticVar[$1, $3]; }
;

class_statement_list_ex:
      class_statement_list_ex class_statement               { if ($2 !== null) { push($1, $2); } }
    | /* empty */                                           { init(); }
;

class_statement_list:
      class_statement_list_ex
          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
;

class_statement:
      variable_modifiers property_declaration_list ';'
          { $$ = Stmt\Property[$1, $2]; $this->checkProperty($$, #1); }
    | T_CONST class_const_list ';'                          { $$ = Stmt\ClassConst[$2, 0]; }
    | method_modifiers T_FUNCTION optional_ref identifier_ex '(' parameter_list ')' optional_return_type method_body
          { $$ = Stmt\ClassMethod[$4, ['type' => $1, 'byRef' => $3, 'params' => $6, 'returnType' => $8, 'stmts' => $9]];
            $this->checkClassMethod($$, #1); }
    | T_USE class_name_list trait_adaptations               { $$ = 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 class_name_list ';'
          { $$ = Stmt\TraitUseAdaptation\Precedence[$1[0], $1[1], $3]; }
    | trait_method_reference T_AS member_modifier identifier_ex ';'
          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, $4]; }
    | trait_method_reference T_AS member_modifier ';'
          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, null]; }
    | trait_method_reference T_AS identifier ';'
          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; }
    | trait_method_reference T_AS reserved_non_modifiers_identifier ';'
          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; }
;

trait_method_reference_fully_qualified:
      name T_PAAMAYIM_NEKUDOTAYIM identifier_ex             { $$ = array($1, $3); }
;
trait_method_reference:
      trait_method_reference_fully_qualified                { $$ = $1; }
    | identifier_ex                                         { $$ = 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                                       { $$ = $1; }
    | non_empty_member_modifiers member_modifier            { $this->checkModifier($1, $2, #2); $$ = $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_decl_name:
      T_VARIABLE                                            { $$ = Node\VarLikeIdentifier[parseVar($1)]; }
;

property_declaration:
      property_decl_name                                    { $$ = Stmt\PropertyProperty[$1, null]; }
    | property_decl_name '=' static_scalar                  { $$ = Stmt\PropertyProperty[$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                                     { $$ = Expr\Assign[$1, $3]; }
    | variable '=' ampersand variable                       { $$ = Expr\AssignRef[$1, $4]; }
    | variable '=' ampersand 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                             { $$ = Expr\AssignOp\Pow       [$1, $3]; }
    | variable T_COALESCE_EQUAL expr                        { $$ = Expr\AssignOp\Coalesce  [$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 T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG expr   { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
    | expr T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG expr       { $$ = 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                                       { $$ = Expr\Cast\Int_    [$2]; }
    | T_DOUBLE_CAST expr
          { $attrs = attributes();
            $attrs['kind'] = $this->getFloatCastKind($1);
            $$ = new Expr\Cast\Double($2, $attrs); }
    | 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                                     { $$ = Expr\Cast\Unset_  [$2]; }
    | T_EXIT exit_expr
          { $attrs = attributes();
            $attrs['kind'] = strtolower($1) === 'exit' ? Expr\Exit_::KIND_EXIT : Expr\Exit_::KIND_DIE;
            $$ = new Expr\Exit_($2, $attrs); }
    | '@' 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 ')'
          { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_LONG;
            $$ = new Expr\Array_($3, $attrs); }
    | '[' array_pair_list ']'
          { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_SHORT;
            $$ = new Expr\Array_($2, $attrs); }
;

scalar_dereference:
      array_expr '[' dim_offset ']'                         { $$ = Expr\ArrayDimFetch[$1, $3]; }
    | T_CONSTANT_ENCAPSED_STRING '[' dim_offset ']'
          { $attrs = attributes(); $attrs['kind'] = strKind($1);
            $$ = Expr\ArrayDimFetch[new Scalar\String_(Scalar\String_::parse($1), $attrs), $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 '}'
          { $$ = array(Stmt\Class_[null, ['type' => 0, 'extends' => $3, 'implements' => $4, 'stmts' => $6]], $2);
            $this->checkClass($$[0], -1); }
;

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 plain_variable                           { $$ = Expr\ClosureUse[$2, $1]; }
;

function_call:
      name argument_list                                    { $$ = Expr\FuncCall[$1, $2]; }
    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM identifier_ex argument_list
          { $$ = Expr\StaticCall[$1, $3, $4]; }
    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '{' expr '}' argument_list
          { $$ = Expr\StaticCall[$1, $4, $6]; }
    | static_property argument_list
          { $$ = $this->fixupPhp5StaticPropCall($1, $2, attributes()); }
    | 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:
      T_STRING                                              { $$ = Name[$1]; }
    | T_NAME_QUALIFIED                                      { $$ = Name[$1]; }
    | T_NAME_FULLY_QUALIFIED                                { $$ = Name\FullyQualified[substr($1, 1)]; }
    | T_NAME_RELATIVE                                       { $$ = Name\Relative[substr($1, 10)]; }
;

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\EncapsedStringPart[Scalar\String_::parseEscapeSequences($1, '`', false)]); }
    | encaps_list                                           { parseEncapsed($1, '`', false); $$ = $1; }
;

ctor_arguments:
      /* empty */                                           { $$ = array(); }
    | argument_list                                         { $$ = $1; }
;

common_scalar:
      T_LNUMBER                                             { $$ = $this->parseLNumber($1, attributes(), true); }
    | T_DNUMBER                                             { $$ = Scalar\DNumber[Scalar\DNumber::parse($1)]; }
    | T_CONSTANT_ENCAPSED_STRING
          { $attrs = attributes(); $attrs['kind'] = strKind($1);
            $$ = new Scalar\String_(Scalar\String_::parse($1, false), $attrs); }
    | T_LINE                                                { $$ = 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                                                { $$ = Scalar\MagicConst\Namespace_[]; }
    | T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC
          { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), false); }
    | T_START_HEREDOC T_END_HEREDOC
          { $$ = $this->parseDocString($1, '', $2, attributes(), stackAttributes(#2), false); }
;

static_scalar:
      common_scalar                                         { $$ = $1; }
    | class_name T_PAAMAYIM_NEKUDOTAYIM identifier_ex       { $$ = 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 T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG static_scalar
          { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
    | static_scalar T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG static_scalar
          { $$ = 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                                                  { $$ = Expr\ConstFetch[$1]; }
    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM identifier_ex
          { $$ = Expr\ClassConstFetch[$1, $3]; }
;

scalar:
      common_scalar                                         { $$ = $1; }
    | constant                                              { $$ = $1; }
    | '"' encaps_list '"'
          { $attrs = attributes(); $attrs['kind'] = Scalar\String_::KIND_DOUBLE_QUOTED;
            parseEncapsed($2, '"', true); $$ = new Scalar\Encapsed($2, $attrs); }
    | T_START_HEREDOC encaps_list T_END_HEREDOC
          { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), true); }
;

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_simple_name:
      T_VARIABLE
          { $var = parseVar($1); $$ = \is_string($var) ? Node\VarLikeIdentifier[$var] : $var; }
;

static_property_with_arrays:
      class_name_or_var T_PAAMAYIM_NEKUDOTAYIM static_property_simple_name
          { $$ = Expr\StaticPropertyFetch[$1, $3]; }
    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '$' '{' expr '}'
          { $$ = 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]; }
    | plain_variable                                        { $$ = $1; }
    | '$' '{' expr '}'                                      { $$ = Expr\Variable[$3]; }
;

dim_offset:
      /* empty */                                           { $$ = null; }
    | expr                                                  { $$ = $1; }
;

object_property:
      identifier                                            { $$ = $1; }
    | '{' expr '}'                                          { $$ = $2; }
    | variable_without_objects                              { $$ = $1; }
    | error                                                 { $$ = Expr\Error[]; $this->errorState = 2; }
;

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                                              { $$ = Expr\ArrayItem[$1, null, false]; }
    | list_expr                                             { $$ = Expr\ArrayItem[$1, null, false]; }
    | /* 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 ampersand variable                { $$ = Expr\ArrayItem[$4, $1,   true]; }
    | ampersand variable                                    { $$ = Expr\ArrayItem[$2, null, true]; }
    | T_ELLIPSIS expr                                       { $$ = Expr\ArrayItem[$2, null, false, attributes(), true]; }
;

encaps_list:
      encaps_list encaps_var                                { push($1, $2); }
    | encaps_list encaps_string_part                        { push($1, $2); }
    | encaps_var                                            { init($1); }
    | encaps_string_part encaps_var                         { init($1, $2); }
;

encaps_string_part:
      T_ENCAPSED_AND_WHITESPACE                             { $$ = Scalar\EncapsedStringPart[$1]; }
;

encaps_str_varname:
      T_STRING_VARNAME                                      { $$ = Expr\Variable[$1]; }
;

encaps_var:
      plain_variable                                        { $$ = $1; }
    | plain_variable '[' encaps_var_offset ']'              { $$ = Expr\ArrayDimFetch[$1, $3]; }
    | plain_variable T_OBJECT_OPERATOR identifier           { $$ = Expr\PropertyFetch[$1, $3]; }
    | T_DOLLAR_OPEN_CURLY_BRACES expr '}'                   { $$ = Expr\Variable[$2]; }
    | T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}'       { $$ = Expr\Variable[$2]; }
    | T_DOLLAR_OPEN_CURLY_BRACES encaps_str_varname '[' expr ']' '}'
          { $$ = Expr\ArrayDimFetch[$2, $4]; }
    | T_CURLY_OPEN variable '}'                             { $$ = $2; }
;

encaps_var_offset:
      T_STRING                                              { $$ = Scalar\String_[$1]; }
    | T_NUM_STRING                                          { $$ = $this->parseNumString($1, attributes()); }
    | plain_variable                                        { $$ = $1; }
;

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