%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 %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 %left '?' ':' %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 %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 '[' %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 %% start: top_statement_list { $$ = Stmt_Namespace::postprocess($1); } ; top_statement_list: top_statement_list top_statement { pushNormalizing($1, $2); } | /* empty */ { init(); } ; namespace_name: T_STRING { init($1); } | namespace_name T_NS_SEPARATOR T_STRING { push($1, $3); } ; top_statement: statement { $$ = $1; } | function_declaration_statement { $$ = $1; } | class_declaration_statement { $$ = $1; } | T_HALT_COMPILER { $$ = Stmt_HaltCompiler[$this->lexer->handleHaltCompiler()]; } | T_NAMESPACE namespace_name ';' { $$ = Stmt_Namespace[Name[$2], null]; } | T_NAMESPACE namespace_name '{' top_statement_list '}' { $$ = Stmt_Namespace[Name[$2], $4]; } | T_NAMESPACE '{' top_statement_list '}' { $$ = Stmt_Namespace[null, $3]; } | T_USE use_declarations ';' { $$ = Stmt_Use[$2]; } | T_CONST constant_declaration_list ';' { $$ = Stmt_Const[$2]; } ; use_declarations: use_declarations ',' use_declaration { push($1, $3); } | use_declaration { init($1); } ; use_declaration: namespace_name { $$ = Stmt_UseUse[Name[$1], null]; } | namespace_name T_AS T_STRING { $$ = Stmt_UseUse[Name[$1], $3]; } | T_NS_SEPARATOR namespace_name { $$ = Stmt_UseUse[Name[$2], null]; } | T_NS_SEPARATOR namespace_name T_AS T_STRING { $$ = Stmt_UseUse[Name[$2], $4]; } ; constant_declaration_list: constant_declaration_list ',' constant_declaration { push($1, $3); } | constant_declaration { init($1); } ; constant_declaration: T_STRING '=' static_scalar { $$ = Const[$1, $3]; } ; inner_statement_list: inner_statement_list inner_statement { pushNormalizing($1, $2); } | /* empty */ { init(); } ; inner_statement: statement { $$ = $1; } | function_declaration_statement { $$ = $1; } | class_declaration_statement { $$ = $1; } | T_HALT_COMPILER { error('__halt_compiler() can only be used from the outermost scope'); } ; 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]; } ; 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; } | '&' { $$ = true; } ; function_declaration_statement: T_FUNCTION optional_ref T_STRING '(' parameter_list ')' '{' inner_statement_list '}' { $$ = Stmt_Function[$3, [byRef: $2, params: $5, stmts: $8]]; } ; 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_class_type optional_ref T_VARIABLE { $$ = Param[parseVar($3), null, $1, $2]; } | optional_class_type optional_ref T_VARIABLE '=' static_scalar { $$ = Param[parseVar($3), $5, $1, $2]; } ; optional_class_type: /* empty */ { $$ = null; } | name { $$ = $1; } | T_ARRAY { $$ = 'array'; } | T_CALLABLE { $$ = 'callable'; } ; argument_list: '(' ')' { $$ = array(); } | '(' non_empty_argument_list ')' { $$ = $2; } | '(' yield_expr ')' { $$ = array(Arg[$2, false]); } ; non_empty_argument_list: argument { init($1); } | non_empty_argument_list ',' argument { push($1, $3); } ; argument: expr { $$ = Arg[$1, false]; } | '&' variable { $$ = Arg[$2, true]; } ; global_var_list: global_var_list ',' global_var { push($1, $3); } | global_var { init($1); } ; global_var: T_VARIABLE { $$ = 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 ')' method_body { $$ = Stmt_ClassMethod[$4, [type: $1, byRef: $3, params: $6, stmts: $8]]; } | T_USE name_list trait_adaptations { $$ = 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 { $$ = Stmt_Class::MODIFIER_PUBLIC; } ; method_modifiers: /* empty */ { $$ = Stmt_Class::MODIFIER_PUBLIC; } | 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 { $$ = Expr_AssignPlus [$1, $3]; } | variable T_MINUS_EQUAL expr { $$ = Expr_AssignMinus [$1, $3]; } | variable T_MUL_EQUAL expr { $$ = Expr_AssignMul [$1, $3]; } | variable T_DIV_EQUAL expr { $$ = Expr_AssignDiv [$1, $3]; } | variable T_CONCAT_EQUAL expr { $$ = Expr_AssignConcat [$1, $3]; } | variable T_MOD_EQUAL expr { $$ = Expr_AssignMod [$1, $3]; } | variable T_AND_EQUAL expr { $$ = Expr_AssignBitwiseAnd[$1, $3]; } | variable T_OR_EQUAL expr { $$ = Expr_AssignBitwiseOr [$1, $3]; } | variable T_XOR_EQUAL expr { $$ = Expr_AssignBitwiseXor[$1, $3]; } | variable T_SL_EQUAL expr { $$ = Expr_AssignShiftLeft [$1, $3]; } | variable T_SR_EQUAL expr { $$ = Expr_AssignShiftRight[$1, $3]; } | variable T_INC { $$ = 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_BooleanOr [$1, $3]; } | expr T_BOOLEAN_AND expr { $$ = Expr_BooleanAnd[$1, $3]; } | expr T_LOGICAL_OR expr { $$ = Expr_LogicalOr [$1, $3]; } | expr T_LOGICAL_AND expr { $$ = Expr_LogicalAnd[$1, $3]; } | expr T_LOGICAL_XOR expr { $$ = Expr_LogicalXor[$1, $3]; } | expr '|' expr { $$ = Expr_BitwiseOr [$1, $3]; } | expr '&' expr { $$ = Expr_BitwiseAnd[$1, $3]; } | expr '^' expr { $$ = Expr_BitwiseXor[$1, $3]; } | expr '.' expr { $$ = Expr_Concat [$1, $3]; } | expr '+' expr { $$ = Expr_Plus [$1, $3]; } | expr '-' expr { $$ = Expr_Minus [$1, $3]; } | expr '*' expr { $$ = Expr_Mul [$1, $3]; } | expr '/' expr { $$ = Expr_Div [$1, $3]; } | expr '%' expr { $$ = Expr_Mod [$1, $3]; } | expr T_SL expr { $$ = Expr_ShiftLeft [$1, $3]; } | expr T_SR expr { $$ = Expr_ShiftRight[$1, $3]; } | '+' expr %prec T_INC { $$ = Expr_UnaryPlus [$2]; } | '-' expr %prec T_INC { $$ = Expr_UnaryMinus[$2]; } | '!' expr { $$ = Expr_BooleanNot[$2]; } | '~' expr { $$ = Expr_BitwiseNot[$2]; } | expr T_IS_IDENTICAL expr { $$ = Expr_Identical [$1, $3]; } | expr T_IS_NOT_IDENTICAL expr { $$ = Expr_NotIdentical [$1, $3]; } | expr T_IS_EQUAL expr { $$ = Expr_Equal [$1, $3]; } | expr T_IS_NOT_EQUAL expr { $$ = Expr_NotEqual [$1, $3]; } | expr '<' expr { $$ = Expr_Smaller [$1, $3]; } | expr T_IS_SMALLER_OR_EQUAL expr { $$ = Expr_SmallerOrEqual[$1, $3]; } | expr '>' expr { $$ = Expr_Greater [$1, $3]; } | expr T_IS_GREATER_OR_EQUAL expr { $$ = Expr_GreaterOrEqual[$1, $3]; } | expr T_INSTANCEOF class_name_reference { $$ = 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]; } | 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_FUNCTION optional_ref '(' parameter_list ')' lexical_vars '{' inner_statement_list '}' { $$ = Expr_Closure[[static: false, byRef: $2, params: $4, uses: $6, stmts: $8]]; } | T_STATIC T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars '{' inner_statement_list '}' { $$ = Expr_Closure[[static: true, byRef: $3, params: $5, uses: $7, stmts: $9]]; } ; 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]; } | scalar_dereference '[' dim_offset ']' { $$ = Expr_ArrayDimFetch[$1, $3]; } /* alternative array syntax missing intentionally */ ; new_expr: T_NEW class_name_reference ctor_arguments { $$ = Expr_New[$2, $3]; } ; 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 PHPParser_Node_Expr_StaticPropertyFetch) { $$ = Expr_StaticCall[$1->class, Expr_Variable[$1->name], $2]; } elseif ($1 instanceof PHPParser_Node_Expr_ArrayDimFetch) { $tmp = $1; while ($tmp->var instanceof PHPParser_Node_Expr_ArrayDimFetch) { $tmp = $tmp->var; } $$ = 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 { $$ = Name['static']; } | name { $$ = $1; } ; name: namespace_name { $$ = Name[$1]; } | T_NS_SEPARATOR namespace_name { $$ = Name_FullyQualified[$2]; } | T_NAMESPACE T_NS_SEPARATOR namespace_name { $$ = Name_Relative[$3]; } ; class_name_reference: class_name { $$ = $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 { $$ = Scalar_LineConst[]; } | T_FILE { $$ = Scalar_FileConst[]; } | T_DIR { $$ = Scalar_DirConst[]; } | T_CLASS_C { $$ = Scalar_ClassConst[]; } | T_TRAIT_C { $$ = Scalar_TraitConst[]; } | T_METHOD_C { $$ = Scalar_MethodConst[]; } | T_FUNC_C { $$ = Scalar_FuncConst[]; } | T_NS_C { $$ = Scalar_NSConst[]; } | 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['']; } | name { $$ = Expr_ConstFetch[$1]; } ; static_scalar: /* compile-time evaluated scalars */ common_scalar { $$ = $1; } | class_name T_PAAMAYIM_NEKUDOTAYIM class_const_name { $$ = Expr_ClassConstFetch[$1, $3]; } | '+' static_scalar { $$ = Expr_UnaryPlus[$2]; } | '-' static_scalar { $$ = Expr_UnaryMinus[$2]; } | T_ARRAY '(' static_array_pair_list ')' { $$ = Expr_Array[$3]; } | '[' static_array_pair_list ']' { $$ = Expr_Array[$2]; } ; scalar: common_scalar { $$ = $1; } | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM class_const_name { $$ = Expr_ClassConstFetch[$1, $3]; } | '"' encaps_list '"' { parseEncapsed($2, '"'); $$ = 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)]; } ; %%