%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 %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_THROW %token T_USE %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_INTERFACE %token T_EXTENDS %token T_IMPLEMENTS %token T_OBJECT_OPERATOR %token T_DOUBLE_ARROW %token T_LIST %token T_ARRAY %token T_CLASS_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 { $$ = $1; } ; top_statement_list: top_statement_list top_statement { pushNormalizing($1, $2); } | /* empty */ { init(); } ; namespace_name: namespace_name_sub { $$ = Name[parts: $1]; } ; namespace_name_sub: T_STRING { init($1); } | namespace_name_sub T_NS_SEPARATOR T_STRING { push($1, $3); } ; top_statement: statement { $$ = $1; } | function_declaration_statement { $$ = $1; } | class_declaration_statement { $$ = $1; } | T_HALT_COMPILER '(' ')' ';' { YYACCEPT; } | T_NAMESPACE namespace_name ';' { $$ = Stmt_Namespace[ns: $2]; } | T_NAMESPACE namespace_name '{' top_statement_list '}' { $$ = array(Stmt_Namespace[ns: $2], $4); } | T_NAMESPACE '{' top_statement_list '}' { $$ = array(Stmt_Namespace[ns: null], $3); } | T_USE use_declarations ';' { $$ = Stmt_Use[uses: $2]; } | constant_declaration ';' { $$ = Stmt_Const[consts: $1]; } ; use_declarations: use_declarations ',' use_declaration { push($1, $3); } | use_declaration { init($1); } ; use_declaration: namespace_name { $$ = Stmt_UseUse[ns: $1, alias: null]; } | namespace_name T_AS T_STRING { $$ = Stmt_UseUse[ns: $1, alias: $3]; } | T_NS_SEPARATOR namespace_name { $$ = Stmt_UseUse[ns: $2, alias: null]; } | T_NS_SEPARATOR namespace_name T_AS T_STRING { $$ = Stmt_UseUse[ns: $2, alias: $4]; } ; constant_declaration: constant_declaration ',' T_STRING '=' static_scalar { push($1, Stmt_ConstConst[name: $3, value: $5]); } | T_CONST T_STRING '=' static_scalar { init(Stmt_ConstConst[name: $2, value: $4]); } ; 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 '(' expr ')' statement elseif_list else_single { $$ = Stmt_If[cond: $3, stmts: toArray($5), elseifList: $6, else: $7]; } | T_IF '(' expr ')' ':' inner_statement_list new_elseif_list new_else_single T_ENDIF ';' { $$ = Stmt_If[cond: $3, stmts: $6, elseifList: $7, else: $8]; } | T_WHILE '(' expr ')' while_statement { $$ = Stmt_While[cond: $3, stmts: toArray($5)]; } | T_DO statement T_WHILE '(' expr ')' ';' { $$ = Stmt_Do[stmts: toArray($2), cond: $5]; } | T_FOR '(' for_expr ';' for_expr ';' for_expr ')' for_statement { $$ = Stmt_For[init: $3, cond: $5, loop: $7, stmts: toArray($9)]; } | T_SWITCH '(' expr ')' switch_case_list { $$ = Stmt_Switch[cond: $3, caseList: $5]; } | T_BREAK ';' { $$ = Stmt_Break[num: null]; } | T_BREAK expr ';' { $$ = Stmt_Break[num: $2]; } | T_CONTINUE ';' { $$ = Stmt_Continue[num: null]; } | T_CONTINUE expr ';' { $$ = Stmt_Continue[num: $2]; } | T_RETURN ';' { $$ = Stmt_Return[expr: null]; } | T_RETURN expr_without_variable ';' { $$ = Stmt_Return[expr: $2]; } | T_RETURN variable ';' { $$ = Stmt_Return[expr: $2]; } | T_GLOBAL global_var_list ';' { $$ = Stmt_Global[vars: $2]; } | T_STATIC static_var_list ';' { $$ = Stmt_Static[vars: $2]; } | T_ECHO expr_list ';' { $$ = Stmt_Echo[exprs: $2]; } | T_INLINE_HTML { $$ = Stmt_InlineHTML[value: $1]; } | expr ';' { $$ = $1; } | T_UNSET '(' variables_list ')' ';' { $$ = Stmt_Unset[vars: $3]; } | T_FOREACH '(' expr T_AS variable ')' foreach_statement { $$ = Stmt_Foreach[expr: $3, keyVar: null, byRef: false, valueVar: $5, stmts: toArray($7)]; } | T_FOREACH '(' expr T_AS '&' variable ')' foreach_statement { $$ = Stmt_Foreach[expr: $3, keyVar: null, byRef: true, valueVar: $6, stmts: toArray($8)]; } | T_FOREACH '(' expr T_AS variable T_DOUBLE_ARROW optional_ref variable ')' foreach_statement { $$ = Stmt_Foreach[expr: $3, keyVar: $5, byRef: $7, valueVar: $8, stmts: toArray($10)]; } | T_DECLARE '(' declare_list ')' declare_statement { $$ = Stmt_Declare[declares: $3, stmts: toArray($5)]; } | ';' { $$ = array(); /* means: no statement */ } | T_TRY '{' inner_statement_list '}' catches { $$ = Stmt_TryCatch[stmts: $3, catches: $5]; } | T_THROW expr ';' { $$ = Stmt_Throw[expr: $2]; } | T_GOTO T_STRING ';' { $$ = Stmt_Goto[name: $2]; } | T_STRING ':' { $$ = Stmt_Label[name: $1]; } ; catches: catch { init($1); } | catches catch { push($1, $2); } ; catch: T_CATCH '(' name T_VARIABLE ')' '{' inner_statement_list '}' { $$ = Stmt_Catch[type: $3, var: parseVar($4), stmts: $7]; } ; variables_list: variable { init($1); } | variables_list ',' variable { push($1, $3); } ; optional_ref: /* empty */ { $$ = false; } | '&' { $$ = true; } ; function_declaration_statement: T_FUNCTION optional_ref T_STRING '(' parameter_list ')' '{' inner_statement_list '}' { $$ = Stmt_Func[byRef: $2, name: $3, params: $5, stmts: $8]; } ; class_declaration_statement: class_entry_type T_STRING extends_from implements_list '{' class_statement_list '}' { $$ = Stmt_Class[type: $1, name: $2, extends: $3, implements: $4, stmts: $6]; } | T_INTERFACE T_STRING interface_extends_list '{' class_statement_list '}' { $$ = Stmt_Interface[name: $2, extends: $3, stmts: $5]; } ; 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 interface_list { $$ = $2; } ; implements_list: /* empty */ { $$ = array(); } | T_IMPLEMENTS interface_list { $$ = $2; } ; interface_list: name { init($1); } | interface_list ',' name { push($1, $3); } ; for_statement: statement { $$ = $1; } | ':' inner_statement_list T_ENDFOR ';' { $$ = $2; } ; foreach_statement: statement { $$ = $1; } | ':' inner_statement_list T_ENDFOREACH ';' { $$ = $2; } ; declare_statement: statement { $$ = $1; } | ':' inner_statement_list T_ENDDECLARE ';' { $$ = $2; } ; declare_list: T_STRING '=' static_scalar { init(Stmt_DeclareDeclare[key: $1, value: $3]); } | declare_list ',' T_STRING '=' static_scalar { push($1, Stmt_DeclareDeclare[key: $3, value: $5]); } ; switch_case_list: '{' case_list '}' { $$ = $2; } | '{' ';' case_list '}' { $$ = $3; } | ':' case_list T_ENDSWITCH ';' { $$ = $2; } | ':' ';' case_list T_ENDSWITCH ';' { $$ = $3; } ; case_list: /* empty */ { init(); } | case_list T_CASE expr case_separator inner_statement_list { push($1, Stmt_Case[cond: $3, stmts: $5]); } | case_list T_DEFAULT case_separator inner_statement_list { push($1, Stmt_Case[cond: null, stmts: $4]); } ; case_separator: ':' | ';' ; while_statement: statement { $$ = $1; } | ':' inner_statement_list T_ENDWHILE ';' { $$ = $2; } ; elseif_list: /* empty */ { init();} | elseif_list T_ELSEIF '(' expr ')' statement { push($1, Stmt_ElseIf[cond: $4, stmts: toArray($6)]); } ; new_elseif_list: /* empty */ { init(); } | new_elseif_list T_ELSEIF '(' expr ')' ':' inner_statement_list { push($1, Stmt_ElseIf[cond: $4, stmts: $7]); } ; else_single: /* empty */ { $$ = null; } | T_ELSE statement { $$ = Stmt_Else[stmts: toArray($2)]; } ; new_else_single: /* empty */ { $$ = null; } | T_ELSE ':' inner_statement_list { $$ = Stmt_Else[stmts: $3]; } ; parameter_list: non_empty_parameter_list { $$ = $1; } | /* empty */ { $$ = array(); } ; non_empty_parameter_list: optional_class_type optional_ref T_VARIABLE { init(Stmt_FuncParam[type: $1, name: parseVar($3), byRef: $2, default: null]); } | optional_class_type optional_ref T_VARIABLE '=' static_scalar { init(Stmt_FuncParam[type: $1, name: parseVar($3), byRef: $2, default: $5]); } | non_empty_parameter_list ',' optional_class_type optional_ref T_VARIABLE { push($1, Stmt_FuncParam[type: $3, name: parseVar($5), byRef: $4, default: null]); } | non_empty_parameter_list ',' optional_class_type optional_ref T_VARIABLE '=' static_scalar { push($1, Stmt_FuncParam[type: $3, name: parseVar($5), byRef: $4, default: $7]); } ; optional_class_type: /* empty */ { $$ = null; } | name { $$ = $1; } | T_ARRAY { $$ = 'array'; } ; function_call_argument_list: non_empty_function_call_argument_list { $$ = $1; } | /* empty */ { $$ = array(); } ; non_empty_function_call_argument_list: expr_without_variable { init(Expr_FuncCallArg[value: $1, byRef: false]); } | variable { init(Expr_FuncCallArg[value: $1, byRef: false]); } | '&' variable { init(Expr_FuncCallArg[value: $2, byRef: true]); } | non_empty_function_call_argument_list ',' expr_without_variable { push($1, Expr_FuncCallArg[value: $3, byRef: false]); } | non_empty_function_call_argument_list ',' variable { push($1, Expr_FuncCallArg[value: $3, byRef: false]); } | non_empty_function_call_argument_list ',' '&' variable { push($1, Expr_FuncCallArg[value: $4, byRef: true]); } ; global_var_list: global_var_list ',' global_var { push($1, $3); } | global_var { init($1); } ; global_var: T_VARIABLE { $$ = Variable[name: parseVar($1)]; } | '$' variable { $$ = Variable[name: $2]; } | '$' '{' expr '}' { $$ = Variable[name: $3]; } ; static_var_list: static_var_list ',' T_VARIABLE { push($1, Stmt_StaticVar[name: parseVar($3), default: null]); } | static_var_list ',' T_VARIABLE '=' static_scalar { push($1, Stmt_StaticVar[name: parseVar($3), default: $5]); } | T_VARIABLE { init(Stmt_StaticVar[name: parseVar($1), default: null]); } | T_VARIABLE '=' static_scalar { init(Stmt_StaticVar[name: parseVar($1), default: $3]); } ; class_statement_list: class_statement_list class_statement { push($1, $2); } | /* empty */ { init(); } ; class_statement: variable_modifiers class_variable_declaration ';' { $$ = Stmt_Property[type: $1, props: $2]; } | class_constant_declaration ';' { $$ = Stmt_ClassConst[consts: $1]; } | method_modifiers T_FUNCTION optional_ref T_STRING '(' parameter_list ')' method_body { $$ = Stmt_ClassMethod[type: $1, byRef: $3, name: $4, params: $6, stmts: $8]; } ; 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; } ; class_variable_declaration: class_variable_declaration ',' T_VARIABLE { push($1, Stmt_PropertyProperty[name: parseVar($3), default: null]); } | class_variable_declaration ',' T_VARIABLE '=' static_scalar { push($1, Stmt_PropertyProperty[name: parseVar($3), default: $5]); } | T_VARIABLE { init(Stmt_PropertyProperty[name: parseVar($1), default: null]); } | T_VARIABLE '=' static_scalar { init(Stmt_PropertyProperty[name: parseVar($1), default: $3]); } ; class_constant_declaration: class_constant_declaration ',' T_STRING '=' static_scalar { push($1, Stmt_ClassConstConst[name: $3, value: $5]); } | T_CONST T_STRING '=' static_scalar { init(Stmt_ClassConstConst[name: $2, value: $4]); } ; expr_list: expr_list ',' expr { push($1, $3); } | expr { init($1); } ; for_expr: /* empty */ { $$ = array(); } | expr_list { $$ = $1; } ; expr_without_variable: T_LIST '(' assignment_list ')' '=' expr { $$ = Expr_List[assignList: $3, expr: $6]; } | variable '=' expr { $$ = Expr_Assign[var: $1, expr: $3]; } | variable '=' '&' variable { $$ = Expr_AssignRef[var: $1, refVar: $4]; } | variable '=' '&' T_NEW class_name_reference ctor_arguments { $$ = Expr_Assign[var: $1, expr: Expr_New[class: $5, args: $6]]; } /* reference dropped intentially, TODO: Throw error? */ | T_NEW class_name_reference ctor_arguments { $$ = Expr_New[class: $2, args: $3]; } | T_CLONE expr { $$ = Expr_Clone[expr: $2]; } | variable T_PLUS_EQUAL expr { $$ = Expr_AssignPlus[var: $1, expr: $3]; } | variable T_MINUS_EQUAL expr { $$ = Expr_AssignMinus[var: $1, expr: $3]; } | variable T_MUL_EQUAL expr { $$ = Expr_AssignMul[var: $1, expr: $3]; } | variable T_DIV_EQUAL expr { $$ = Expr_AssignDiv[var: $1, expr: $3]; } | variable T_CONCAT_EQUAL expr { $$ = Expr_AssignConcat[var: $1, expr: $3]; } | variable T_MOD_EQUAL expr { $$ = Expr_AssignMod[var: $1, expr: $3]; } | variable T_AND_EQUAL expr { $$ = Expr_AssignBinAnd[var: $1, expr: $3]; } | variable T_OR_EQUAL expr { $$ = Expr_AssignBinOr[var: $1, expr: $3]; } | variable T_XOR_EQUAL expr { $$ = Expr_AssignBinXor[var: $1, expr: $3]; } | variable T_SL_EQUAL expr { $$ = Expr_AssignShiftLeft[var: $1, expr: $3]; } | variable T_SR_EQUAL expr { $$ = Expr_AssignShiftRight[var: $1, expr: $3]; } | variable T_INC { $$ = Expr_PostInc[var: $1]; } | T_INC variable { $$ = Expr_PreInc[var: $2]; } | variable T_DEC { $$ = Expr_PostDec[var: $1]; } | T_DEC variable { $$ = Expr_PreDec[var: $2]; } | expr T_BOOLEAN_OR expr { $$ = Expr_BooleanOr[left: $1, right: $3]; } | expr T_BOOLEAN_AND expr { $$ = Expr_BooleanAnd[left: $1, right: $3]; } | expr T_LOGICAL_OR expr { $$ = Expr_LogicalOr[left: $1, right: $3]; } | expr T_LOGICAL_AND expr { $$ = Expr_LogicalAnd[left: $1, right: $3]; } | expr T_LOGICAL_XOR expr { $$ = Expr_LogicalXor[left: $1, right: $3]; } | expr '|' expr { $$ = Expr_BinaryOr[left: $1, right: $3]; } | expr '&' expr { $$ = Expr_BinaryAnd[left: $1, right: $3]; } | expr '^' expr { $$ = Expr_BinaryXor[left: $1, right: $3]; } | expr '.' expr { $$ = Expr_Concat[left: $1, right: $3]; } | expr '+' expr { $$ = Expr_Plus[left: $1, right: $3]; } | expr '-' expr { $$ = Expr_Minus[left: $1, right: $3]; } | expr '*' expr { $$ = Expr_Mul[left: $1, right: $3]; } | expr '/' expr { $$ = Expr_Div[left: $1, right: $3]; } | expr '%' expr { $$ = Expr_Mod[left: $1, right: $3]; } | expr T_SL expr { $$ = Expr_ShiftLeft[left: $1, right: $3]; } | expr T_SR expr { $$ = Expr_ShiftRight[left: $1, right: $3]; } | '+' expr %prec T_INC { $$ = Expr_UnaryPlus[expr: $2]; } | '-' expr %prec T_INC { $$ = Expr_UnaryMinus[expr: $2]; } | '!' expr { $$ = Expr_BooleanNot[expr: $2]; } | '~' expr { $$ = Expr_BinaryNot[expr: $2]; } | expr T_IS_IDENTICAL expr { $$ = Expr_Identical[left: $1, right: $3]; } | expr T_IS_NOT_IDENTICAL expr { $$ = Expr_NotIdentical[left: $1, right: $3]; } | expr T_IS_EQUAL expr { $$ = Expr_Equal[left: $1, right: $3]; } | expr T_IS_NOT_EQUAL expr { $$ = Expr_NotEqual[left: $1, right: $3]; } | expr '<' expr { $$ = Expr_Smaller[left: $1, right: $3]; } | expr T_IS_SMALLER_OR_EQUAL expr { $$ = Expr_SmallerOrEqual[left: $1, right: $3]; } | expr '>' expr { $$ = Expr_Greater[left: $1, right: $3]; } | expr T_IS_GREATER_OR_EQUAL expr { $$ = Expr_GreaterOrEqual[left: $1, right: $3]; } | expr T_INSTANCEOF class_name_reference { $$ = Expr_InstanceOf[expr: $1, class: $3]; } | '(' expr ')' { $$ = $2; } | expr '?' expr ':' expr { $$ = Expr_Ternary[cond: $1, if: $3, else: $5]; } | expr '?' ':' expr { $$ = Expr_Ternary[cond: $1, if: null, else: $4]; } | T_ISSET '(' variables_list ')' { $$ = Expr_Isset[vars: $3]; } | T_EMPTY '(' variable ')' { $$ = Expr_Empty[var: $3]; } | T_INCLUDE expr { $$ = Expr_Include[expr: $2, type: Expr_Include::TYPE_INCLUDE]; } | T_INCLUDE_ONCE expr { $$ = Expr_Include[expr: $2, type: Expr_Include::TYPE_INCLUDE_ONCE]; } | T_EVAL '(' expr ')' { $$ = Expr_Eval[expr: $3]; } | T_REQUIRE expr { $$ = Expr_Include[expr: $2, type: Expr_Include::TYPE_REQUIRE]; } | T_REQUIRE_ONCE expr { $$ = Expr_Include[expr: $2, type: Expr_Include::TYPE_REQUIRE_ONCE]; } | T_INT_CAST expr { $$ = Expr_IntCast[expr: $2]; } | T_DOUBLE_CAST expr { $$ = Expr_DoubleCast[expr: $2]; } | T_STRING_CAST expr { $$ = Expr_StringCast[expr: $2]; } | T_ARRAY_CAST expr { $$ = Expr_ArrayCast[expr: $2]; } | T_OBJECT_CAST expr { $$ = Expr_ObjectCast[expr: $2]; } | T_BOOL_CAST expr { $$ = Expr_BoolCast[expr: $2]; } | T_UNSET_CAST expr { $$ = Expr_UnsetCast[expr: $2]; } | T_EXIT exit_expr { $$ = Expr_Exit[expr: $2]; } | '@' expr { $$ = Expr_ErrorSupress[expr: $2]; } | scalar { $$ = $1; } | T_ARRAY '(' array_pair_list ')' { $$ = Expr_Array[items: $3]; } | '`' backticks_expr '`' { $$ = Expr_ShellExec[parts: $2]; } | T_PRINT expr { $$ = Expr_Print[expr: $2]; } | T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars '{' inner_statement_list '}' { $$ = Expr_LambdaFunc[byRef: $2, params: $4, useVars: $6, stmts: $8]; } ; lexical_vars: /* empty */ { $$ = array(); } | T_USE '(' lexical_var_list ')' { $$ = $3; } ; lexical_var_list: lexical_var_list ',' optional_ref T_VARIABLE { push($1, Expr_LambdaFuncUse[var: parseVar($4), byRef: $3]); } | optional_ref T_VARIABLE { init(Expr_LambdaFuncUse[var: parseVar($2), byRef: $1]); } ; function_call: name '(' function_call_argument_list ')' { $$ = Expr_FuncCall[func: $1, args: $3]; } | class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING '(' function_call_argument_list ')' { $$ = Expr_StaticCall[class: $1, func: $3, args: $5]; } | class_name T_PAAMAYIM_NEKUDOTAYIM variable_without_objects '(' function_call_argument_list ')' { $$ = Expr_StaticCall[class: $1, func: $3, args: $5]; } | reference_variable T_PAAMAYIM_NEKUDOTAYIM T_STRING '(' function_call_argument_list ')' { $$ = Expr_StaticCall[class: $1, func: $3, args: $5]; } | reference_variable T_PAAMAYIM_NEKUDOTAYIM variable_without_objects '(' function_call_argument_list ')' { $$ = Expr_StaticCall[class: $1, func: $3, args: $5]; } | variable_without_objects '(' function_call_argument_list ')' { $$ = Expr_FuncCall[func: $1, args: $3]; } ; class_name: T_STATIC { $$ = 'static'; } | name { $$ = $1; } ; name: namespace_name { $$ = $1; } | T_NAMESPACE T_NS_SEPARATOR namespace_name { $3->resolveType(Name::RELATIVE); $$ = $3; } | T_NS_SEPARATOR namespace_name { $2->resolveType(Name::ABSOLUTE); $$ = $2; } ; class_name_reference: class_name { $$ = $1; } | dynamic_class_name_reference { $$ = $1; } ; dynamic_class_name_reference: object_access_for_dcnr { $$ = $1; } | base_variable { $$ = $1; } ; object_access_for_dcnr: | base_variable T_OBJECT_OPERATOR object_property { $$ = Expr_PropertyFetch[var: $1, name: $3]; } | object_access_for_dcnr T_OBJECT_OPERATOR object_property { $$ = Expr_PropertyFetch[var: $1, name: $3]; } | object_access_for_dcnr '[' dim_offset ']' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } | object_access_for_dcnr '{' expr '}' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } ; exit_expr: /* empty */ { $$ = null; } | '(' ')' { $$ = null; } | '(' expr ')' { $$ = $2; } ; backticks_expr: /* empty */ { $$ = array(); } | T_ENCAPSED_AND_WHITESPACE { $$ = array(Scalar_String::parseEscapeSequences($1)); } | encaps_list { $$ = $1; } ; ctor_arguments: /* empty */ { $$ = array(); } | '(' function_call_argument_list ')' { $$ = $2; } ; common_scalar: T_LNUMBER { $$ = Scalar_LNumber[value: parseLNumber($1)]; } | T_DNUMBER { $$ = Scalar_DNumber[value: parseDNumber($1)]; } | T_CONSTANT_ENCAPSED_STRING { $$ = Scalar_String::create($1); } | T_LINE { $$ = Scalar_LineConst[]; } | T_FILE { $$ = Scalar_FileConst[]; } | T_DIR { $$ = Scalar_DirConst[]; } | T_CLASS_C { $$ = Scalar_ClassConst[]; } | 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[value: Scalar_String::parseEscapeSequences($2), isBinary: false, type: '\'' === $1[3] ? Scalar_String::SINGLE_QUOTED : Scalar_String::DOUBLE_QUOTED]; } | T_START_HEREDOC T_END_HEREDOC { $$ = Scalar_String[value: '', isBinary: false, type: Scalar_String::SINGLE_QUOTED]; } ; static_scalar: /* compile-time evaluated scalars */ common_scalar { $$ = $1; } | name { $$ = Expr_ConstFetch[name: $1]; } | '+' static_scalar { $$ = Expr_UnaryPlus[expr: $2]; } | '-' static_scalar { $$ = Expr_UnaryMinus[expr: $2]; } | T_ARRAY '(' static_array_pair_list ')' { $$ = Expr_Array[items: $3]; } | class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING { $$ = Expr_ClassConstFetch[class: $1, name: $3]; } ; scalar: T_STRING_VARNAME { $$ = Scalar_String[value: $1, isBinary: false, type: Scalar_String::SINGLE_QUOTED]; } | class_constant { $$ = $1; } | name { $$ = Expr_ConstFetch[name: $1]; } | common_scalar { $$ = $1; } | '"' encaps_list '"' { $$ = Scalar_Encapsed[parts: $2]; } | T_START_HEREDOC encaps_list T_END_HEREDOC { $$ = Scalar_Encapsed[parts: $2]; } ; static_array_pair_list: /* empty */ { $$ = array(); } | non_empty_static_array_pair_list optional_comma { $$ = $1; } ; optional_comma: /* empty */ | ',' ; non_empty_static_array_pair_list: non_empty_static_array_pair_list ',' static_scalar T_DOUBLE_ARROW static_scalar { push($1, Expr_ArrayItem[key: $3, value: $5, byRef: false]); } | non_empty_static_array_pair_list ',' static_scalar { push($1, Expr_ArrayItem[key: null, value: $3, byRef: false]); } | static_scalar T_DOUBLE_ARROW static_scalar { init(Expr_ArrayItem[key: $1, value: $3, byRef: false]); } | static_scalar { init(Expr_ArrayItem[key: null, value: $1, byRef: false]); } ; expr: variable { $$ = $1; } | expr_without_variable { $$ = $1; } ; variable: object_access { $$ = $1; } | base_variable { $$ = $1; } | function_call { $$ = $1; } ; object_access: object_access_arrayable { $$ = $1; } | object_access_arrayable '(' function_call_argument_list ')' { $$ = Expr_FuncCall[func: $1, args: $3]; } | variable T_OBJECT_OPERATOR object_property '(' function_call_argument_list ')' { $$ = Expr_MethodCall[var: $1, name: $3, args: $5]; } ; object_access_arrayable: variable T_OBJECT_OPERATOR object_property { $$ = Expr_PropertyFetch[var: $1, name: $3]; } | object_access_arrayable '[' dim_offset ']' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } | object_access_arrayable '{' expr '}' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } ; variable_without_objects: reference_variable { $$ = $1; } | '$' reference_variable { $$ = Variable[name: $2]; } ; base_variable: variable_without_objects { $$ = $1; } | class_name T_PAAMAYIM_NEKUDOTAYIM '$' reference_variable { $$ = Expr_StaticPropertyFetch[class: $1, name: $4]; } | reference_variable T_PAAMAYIM_NEKUDOTAYIM '$' reference_variable { $$ = Expr_StaticPropertyFetch[class: $1, name: $4]; } | static_property_with_arrays { $$ = $1; } ; static_property_with_arrays: class_name T_PAAMAYIM_NEKUDOTAYIM T_VARIABLE { $$ = Expr_StaticPropertyFetch[class: $1, name: parseVar($3)]; } | reference_variable T_PAAMAYIM_NEKUDOTAYIM '$' '{' expr '}' { $$ = Expr_StaticPropertyFetch[class: $1, name: $5]; } | static_property_with_arrays '[' dim_offset ']' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } | static_property_with_arrays '{' expr '}' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } ; reference_variable: reference_variable '[' dim_offset ']' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } | reference_variable '{' expr '}' { $$ = Expr_ArrayDimFetch[var: $1, dim: $3]; } | T_VARIABLE { $$ = Variable[name: parseVar($1)]; } | '$' '{' expr '}' { $$ = Variable[name: $3]; } ; dim_offset: /* empty */ { $$ = null; } | expr { $$ = $1; } ; object_property: T_STRING { $$ = $1; } | '{' expr '}' { $$ = $2; } | variable_without_objects { $$ = $1; } ; assignment_list: assignment_list ',' assignment_list_element { push($1, $3); } | assignment_list_element { init($1); } ; assignment_list_element: variable { $$ = $1; } | T_LIST '(' assignment_list ')' { $$ = $3; } | /* empty */ { $$ = null; } ; array_pair_list: /* empty */ { $$ = array(); } | non_empty_array_pair_list optional_comma { $$ = $1; } ; non_empty_array_pair_list: non_empty_array_pair_list ',' expr T_DOUBLE_ARROW expr { push($1, Expr_ArrayItem[key: $3, value: $5, byRef: false]); } | non_empty_array_pair_list ',' expr { push($1, Expr_ArrayItem[key: null, value: $3, byRef: false]); } | expr T_DOUBLE_ARROW expr { init(Expr_ArrayItem[key: $1, value: $3, byRef: false]); } | expr { init(Expr_ArrayItem[key: null, value: $1, byRef: false]); } | non_empty_array_pair_list ',' expr T_DOUBLE_ARROW '&' variable { push($1, Expr_ArrayItem[key: $3, value: $6, byRef: true]); } | non_empty_array_pair_list ',' '&' variable { push($1, Expr_ArrayItem[key: null, value: $4, byRef: true]); } | expr T_DOUBLE_ARROW '&' variable { init(Expr_ArrayItem[key: $1, value: $4, byRef: true]); } | '&' variable { init(Expr_ArrayItem[key: null, value: $2, byRef: true]); } ; encaps_list: encaps_list encaps_var { push($1, $2); } | encaps_list T_ENCAPSED_AND_WHITESPACE { push($1, Scalar_String::parseEscapeSequences($2)); } | encaps_var { init($1); } | T_ENCAPSED_AND_WHITESPACE encaps_var { init(Scalar_String::parseEscapeSequences($1), $2); } ; encaps_var: T_VARIABLE { $$ = Variable[name: parseVar($1)]; } | T_VARIABLE '[' encaps_var_offset ']' { $$ = Expr_ArrayDimFetch[var: Variable[name: parseVar($1)], dim: $3]; } | T_VARIABLE T_OBJECT_OPERATOR T_STRING { $$ = Expr_PropertyFetch[var: Variable[name: parseVar($1)], name: $3]; } | T_DOLLAR_OPEN_CURLY_BRACES expr '}' { $$ = Variable[name: $2]; } | T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '[' expr ']' '}' { $$ = Expr_ArrayDimFetch[var: Variable[name: $2], dim: $4]; } | T_CURLY_OPEN variable '}' { $$ = $2; } ; encaps_var_offset: T_STRING { $$ = Scalar_String[value: $1]; } | T_NUM_STRING { $$ = Scalar_LNumber[value: parseLNumber($1)]; } | T_VARIABLE { $$ = Variable[name: parseVar($1)]; } ; class_constant: class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING { $$ = Expr_ClassConstFetch[class: $1, name: $3]; } | reference_variable T_PAAMAYIM_NEKUDOTAYIM T_STRING { $$ = Expr_ClassConstFetch[class: $1, name: $3]; } ; %%