php8.1: grammar improvements (#16)
Renamed 'possible_comma' with 'optional_comma' as in PHP-Parser Replace all 'identifier' with 'identifier_ex' and all 'T_STRING' with 'identifier' as in PHP-Parser
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Makhnev Petr
GitHub
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@ -233,7 +233,7 @@ import (
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%type <token> semi_reserved
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%type <token> identifier identifier_ex
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%type <token> plain_variable optional_plain_variable
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%type <token> possible_comma
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%type <token> optional_comma
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%type <token> case_separator
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%type <token> use_type
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@ -338,15 +338,14 @@ semi_reserved:
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identifier:
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T_STRING { $$ = $1 }
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| semi_reserved { $$ = $1 }
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;
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identifier_ex:
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T_STRING { $$ = $1 }
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identifier { $$ = $1 }
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| semi_reserved { $$ = $1 }
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;
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possible_comma:
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optional_comma:
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/* empty */ { $$ = nil }
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| ',' { $$ = $1 }
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;
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@ -403,7 +402,7 @@ attribute_group:
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;
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attribute:
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T_ATTRIBUTE attribute_group possible_comma ']'
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T_ATTRIBUTE attribute_group optional_comma ']'
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{ $$ = yylex.(*Parser).builder.NewAttributeGroup($1, $2, $3, $4) }
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;
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@ -474,7 +473,7 @@ group_use_declaration:
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;
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inline_use_declarations:
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non_empty_inline_use_declarations possible_comma
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non_empty_inline_use_declarations optional_comma
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{ $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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;
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@ -486,7 +485,7 @@ non_empty_inline_use_declarations:
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;
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unprefixed_use_declarations:
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non_empty_unprefixed_use_declarations possible_comma
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non_empty_unprefixed_use_declarations optional_comma
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{ $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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;
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@ -514,12 +513,12 @@ inline_use_declaration:
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unprefixed_use_declaration:
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namespace_name { $$ = yylex.(*Parser).builder.NewUse(nil, $1, nil, nil) }
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| namespace_name T_AS T_STRING { $$ = yylex.(*Parser).builder.NewUse(nil, $1, $2, $3)}
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| namespace_name T_AS identifier { $$ = yylex.(*Parser).builder.NewUse(nil, $1, $2, $3)}
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;
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use_declaration:
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legacy_namespace_name { $$ = yylex.(*Parser).builder.NewUse(nil, $1, nil, nil) }
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| legacy_namespace_name T_AS T_STRING { $$ = yylex.(*Parser).builder.NewUse(nil, $1, $2, $3)}
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| legacy_namespace_name T_AS identifier { $$ = yylex.(*Parser).builder.NewUse(nil, $1, $2, $3)}
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;
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const_list:
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@ -686,7 +685,7 @@ statement:
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{
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$$ = yylex.(*Parser).builder.NewExpressionStmt($1, $2)
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}
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| T_UNSET '(' unset_variables possible_comma ')' ';'
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| T_UNSET '(' unset_variables optional_comma ')' ';'
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{
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$3.(*ast.StmtUnset).UnsetTkn = $1
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$3.(*ast.StmtUnset).OpenParenthesisTkn = $2
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@ -761,7 +760,7 @@ statement:
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{
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$$ = yylex.(*Parser).builder.NewTry($1, $2, $3, $4, $5, $6)
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}
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| T_GOTO T_STRING ';'
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| T_GOTO identifier ';'
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{
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$$ = &ast.StmtGoto{
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Position: yylex.(*Parser).builder.Pos.NewTokensPosition($1, $3),
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@ -774,7 +773,7 @@ statement:
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SemiColonTkn: $3,
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}
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}
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| T_STRING ':'
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| identifier ':'
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{
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$$ = &ast.StmtLabel{
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Position: yylex.(*Parser).builder.Pos.NewTokensPosition($1, $2),
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@ -840,10 +839,10 @@ unset_variable:
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;
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function_declaration_statement:
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T_FUNCTION returns_ref T_STRING '(' parameter_list ')' optional_return_type '{' inner_statement_list '}'
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T_FUNCTION returns_ref identifier '(' parameter_list ')' optional_return_type '{' inner_statement_list '}'
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{ $$ = yylex.(*Parser).builder.NewFunction(nil, $1, $2, $3, $4, $5, $6, $7, $8, $9, $10) }
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| attributes
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T_FUNCTION returns_ref T_STRING '(' parameter_list ')' optional_return_type '{' inner_statement_list '}'
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T_FUNCTION returns_ref identifier '(' parameter_list ')' optional_return_type '{' inner_statement_list '}'
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{ $$ = yylex.(*Parser).builder.NewFunction($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11) }
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;
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@ -874,25 +873,25 @@ class_modifier:
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class_declaration_statement:
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optional_attributes optional_class_modifiers
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T_CLASS T_STRING extends_from implements_list '{' class_statement_list '}'
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T_CLASS identifier extends_from implements_list '{' class_statement_list '}'
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{ $$ = yylex.(*Parser).builder.NewClass($1, $2, $3, $4, $5, $6, $7, $8, $9) }
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;
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trait_declaration_statement:
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optional_attributes
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T_TRAIT T_STRING '{' class_statement_list '}'
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T_TRAIT identifier '{' class_statement_list '}'
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{ $$ = yylex.(*Parser).builder.NewTrait($1, $2, $3, $4, $5, $6) }
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;
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interface_declaration_statement:
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optional_attributes
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T_INTERFACE T_STRING interface_extends_list '{' class_statement_list '}'
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T_INTERFACE identifier interface_extends_list '{' class_statement_list '}'
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{ $$ = yylex.(*Parser).builder.NewInterface($1, $2, $3, $4, $5, $6, $7) }
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;
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enum_declaration_statement:
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optional_attributes
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T_ENUM T_STRING enum_scalar_type implements_list '{' class_statement_list '}'
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T_ENUM identifier enum_scalar_type implements_list '{' class_statement_list '}'
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{ $$ = yylex.(*Parser).builder.NewEnum($1, $2, $3, $4, $5, $6, $7, $8) }
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;
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@ -1265,7 +1264,7 @@ alt_if_stmt:
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;
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parameter_list:
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non_empty_parameter_list possible_comma { $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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non_empty_parameter_list optional_comma { $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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| /* empty */ { $$ = yylex.(*Parser).builder.NewEmptySeparatedList() }
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;
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@ -1349,7 +1348,7 @@ argument_list:
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CloseParenthesisTkn: $2,
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}
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}
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| '(' non_empty_argument_list possible_comma ')'
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| '(' non_empty_argument_list optional_comma ')'
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{
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argumentList := $2.(*ArgumentList)
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argumentList.Position = yylex.(*Parser).builder.Pos.NewTokensPosition($1, $4)
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@ -1464,7 +1463,7 @@ class_statement:
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{ $$ = yylex.(*Parser).builder.NewPropertyList($1, $2, $3, $4, $5) }
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| optional_attributes method_modifiers T_CONST class_const_list ';'
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{ $$ = yylex.(*Parser).builder.NewClassConstList($1, $2, $3, $4, $5) }
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| optional_attributes method_modifiers T_FUNCTION returns_ref identifier '(' parameter_list ')' optional_return_type method_body
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| optional_attributes method_modifiers T_FUNCTION returns_ref identifier_ex '(' parameter_list ')' optional_return_type method_body
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{ $$ = yylex.(*Parser).builder.NewClassMethod($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) }
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| T_USE name_list trait_adaptations
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{
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@ -1486,7 +1485,7 @@ class_statement:
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$$ = traitUse
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}
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| optional_attributes T_CASE T_STRING enum_case_expr ';'
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| optional_attributes T_CASE identifier enum_case_expr ';'
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{ $$ = yylex.(*Parser).builder.NewEnumCase($1, $2, $3, $4, $5) }
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;
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@ -1558,7 +1557,7 @@ trait_precedence:
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;
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trait_alias:
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trait_method_reference T_AS T_STRING
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trait_method_reference T_AS identifier
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{
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$$ = &ast.StmtTraitUseAlias{
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Position: yylex.(*Parser).builder.Pos.NewNodeTokenPosition($1, $3),
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@ -1588,7 +1587,7 @@ trait_alias:
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},
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}
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}
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| trait_method_reference T_AS member_modifier identifier
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| trait_method_reference T_AS member_modifier identifier_ex
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{
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$$ = &ast.StmtTraitUseAlias{
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Position: yylex.(*Parser).builder.Pos.NewNodeTokenPosition($1, $4),
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@ -1618,7 +1617,7 @@ trait_alias:
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;
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trait_method_reference:
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identifier
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identifier_ex
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{
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$$ = &TraitMethodRef{
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Position: yylex.(*Parser).builder.Pos.NewTokenPosition($1),
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@ -1636,7 +1635,7 @@ trait_method_reference:
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;
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absolute_trait_method_reference:
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name T_PAAMAYIM_NEKUDOTAYIM identifier
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name T_PAAMAYIM_NEKUDOTAYIM identifier_ex
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{
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$$ = &TraitMethodRef{
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Position: yylex.(*Parser).builder.Pos.NewNodeTokenPosition($1, $3),
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@ -1740,7 +1739,7 @@ class_const_list:
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;
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class_const_decl:
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identifier '=' expr backup_doc_comment
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identifier_ex '=' expr backup_doc_comment
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{
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$$ = &ast.StmtConstant{
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Position: yylex.(*Parser).builder.Pos.NewTokenNodePosition($1, $3),
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@ -1756,7 +1755,7 @@ class_const_decl:
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;
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const_decl:
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T_STRING '=' expr backup_doc_comment
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identifier '=' expr backup_doc_comment
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{
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$$ = &ast.StmtConstant{
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Position: yylex.(*Parser).builder.Pos.NewTokenNodePosition($1, $3),
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@ -1839,7 +1838,7 @@ new_expr:
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;
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expr_list_allow_comma:
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non_empty_expr_list possible_comma
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non_empty_expr_list optional_comma
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{ $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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;
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@ -1856,7 +1855,7 @@ match:
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match_arm_list:
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/* empty */
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{ $$ = nil; }
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| non_empty_match_arm_list possible_comma
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| non_empty_match_arm_list optional_comma
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{ $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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;
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@ -1870,7 +1869,7 @@ non_empty_match_arm_list:
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match_arm:
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expr_list_allow_comma T_DOUBLE_ARROW expr
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{ $$ = yylex.(*Parser).builder.NewMatchArm(nil, nil, $1, $2, $3) }
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| T_DEFAULT possible_comma T_DOUBLE_ARROW expr
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| T_DEFAULT optional_comma T_DOUBLE_ARROW expr
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{ $$ = yylex.(*Parser).builder.NewMatchArm($1, $2, nil, $3, $4) }
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;
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@ -2646,7 +2645,7 @@ lexical_vars:
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;
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lexical_var_list:
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non_empty_lexical_var_list possible_comma { $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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non_empty_lexical_var_list optional_comma { $$ = yylex.(*Parser).builder.AppendToSeparatedList($1, $2, nil) }
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;
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non_empty_lexical_var_list:
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@ -3074,13 +3073,13 @@ new_variable:
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;
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member_name:
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identifier { $$ = yylex.(*Parser).builder.NewIdentifier($1) }
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identifier_ex { $$ = yylex.(*Parser).builder.NewIdentifier($1) }
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| '{' expr '}' { $$ = yylex.(*Parser).builder.NewBracket($1, $2, $3) }
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| simple_variable { $$ = $1 }
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;
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property_name:
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T_STRING { $$ = yylex.(*Parser).builder.NewIdentifier($1) }
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identifier { $$ = yylex.(*Parser).builder.NewIdentifier($1) }
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| '{' expr '}' { $$ = yylex.(*Parser).builder.NewBracket($1, $2, $3) }
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| simple_variable { $$ = $1 }
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;
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@ -3248,11 +3247,11 @@ encaps_var:
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CloseBracketTkn: $4,
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}
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}
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| plain_variable T_OBJECT_OPERATOR T_STRING
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| plain_variable T_OBJECT_OPERATOR identifier
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{
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$$ = yylex.(*Parser).builder.NewPropertyFetchFromTokens($1, $2, $3)
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}
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| plain_variable T_NULLSAFE_OBJECT_OPERATOR T_STRING
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| plain_variable T_NULLSAFE_OBJECT_OPERATOR identifier
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{
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$$ = yylex.(*Parser).builder.NewNullsafePropertyFetchFromTokens($1, $2, $3)
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}
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@ -3306,7 +3305,7 @@ encaps_var:
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;
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encaps_var_offset:
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T_STRING
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identifier
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{
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$$ = &ast.ScalarString{
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Position: yylex.(*Parser).builder.Pos.NewTokenPosition($1),
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@ -3369,7 +3368,7 @@ encaps_var_offset:
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;
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internal_functions_in_yacc:
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T_ISSET '(' isset_variables possible_comma ')'
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T_ISSET '(' isset_variables optional_comma ')'
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{
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if $4 != nil {
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$3.(*ParserSeparatedList).SeparatorTkns = append($3.(*ParserSeparatedList).SeparatorTkns, $4)
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