%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)]; }
;
%%
