php-parser/parser/parser.y

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%{
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package parser
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import (
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"io"
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"fmt"
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"strings"
"strconv"
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"github.com/z7zmey/php-parser/token"
"github.com/z7zmey/php-parser/node"
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"github.com/z7zmey/php-parser/node/scalar"
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"github.com/z7zmey/php-parser/node/name"
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"github.com/z7zmey/php-parser/node/stmt"
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"github.com/z7zmey/php-parser/node/expr"
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"github.com/z7zmey/php-parser/node/expr/assign_op"
"github.com/z7zmey/php-parser/node/expr/binary_op"
"github.com/z7zmey/php-parser/node/expr/cast"
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)
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var rootnode = stmt.NewStmtList([]node.Node{})
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func Parse(src io.Reader, fName string) node.Node {
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yyDebug = 0
yyErrorVerbose = true
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rootnode = stmt.NewStmtList([]node.Node{}) //reset
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yyParse(newLexer(src, fName))
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return rootnode
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}
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type foreachVariable struct {
node node.Node
byRef bool
}
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%}
%union{
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node node.Node
token token.Token
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value string
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list []node.Node
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strings []string
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foreachVariable foreachVariable
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}
%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
%right T_DOUBLE_ARROW
%right T_YIELD_FROM
%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 T_POW_EQUAL
%left '?' ':'
%right T_COALESCE
%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 T_SPACESHIP
%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 T_POW
%right '['
%nonassoc T_NEW T_CLONE
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%left T_NOELSE
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%left T_ELSEIF
%left T_ELSE
%left T_ENDIF
%right T_STATIC T_ABSTRACT T_FINAL T_PRIVATE T_PROTECTED T_PUBLIC
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%type <token> $unk
%token <token> T_INCLUDE
%token <token> T_INCLUDE_ONCE
%token <token> T_EXIT
%token <token> T_IF
%token <token> T_LNUMBER
%token <token> T_DNUMBER
%token <token> T_STRING
%token <token> T_STRING_VARNAME
%token <token> T_VARIABLE
%token <token> T_NUM_STRING
%token <token> T_INLINE_HTML
%token <token> T_CHARACTER
%token <token> T_BAD_CHARACTER
%token <token> T_ENCAPSED_AND_WHITESPACE
%token <token> T_CONSTANT_ENCAPSED_STRING
%token <token> T_ECHO
%token <token> T_DO
%token <token> T_WHILE
%token <token> T_ENDWHILE
%token <token> T_FOR
%token <token> T_ENDFOR
%token <token> T_FOREACH
%token <token> T_ENDFOREACH
%token <token> T_DECLARE
%token <token> T_ENDDECLARE
%token <token> T_AS
%token <token> T_SWITCH
%token <token> T_ENDSWITCH
%token <token> T_CASE
%token <token> T_DEFAULT
%token <token> T_BREAK
%token <token> T_CONTINUE
%token <token> T_GOTO
%token <token> T_FUNCTION
%token <token> T_CONST
%token <token> T_RETURN
%token <token> T_TRY
%token <token> T_CATCH
%token <token> T_FINALLY
%token <token> T_THROW
%token <token> T_USE
%token <token> T_INSTEADOF
%token <token> T_GLOBAL
%token <token> T_VAR
%token <token> T_UNSET
%token <token> T_ISSET
%token <token> T_EMPTY
%token <token> T_HALT_COMPILER
%token <token> T_CLASS
%token <token> T_TRAIT
%token <token> T_INTERFACE
%token <token> T_EXTENDS
%token <token> T_IMPLEMENTS
%token <token> T_OBJECT_OPERATOR
%token <token> T_DOUBLE_ARROW
%token <token> T_LIST
%token <token> T_ARRAY
%token <token> T_CALLABLE
%token <token> T_CLASS_C
%token <token> T_TRAIT_C
%token <token> T_METHOD_C
%token <token> T_FUNC_C
%token <token> T_LINE
%token <token> T_FILE
%token <token> T_COMMENT
%token <token> T_DOC_COMMENT
%token <token> T_OPEN_TAG
%token <token> T_OPEN_TAG_WITH_ECHO
%token <token> T_CLOSE_TAG
%token <token> T_WHITESPACE
%token <token> T_START_HEREDOC
%token <token> T_END_HEREDOC
%token <token> T_DOLLAR_OPEN_CURLY_BRACES
%token <token> T_CURLY_OPEN
%token <token> T_PAAMAYIM_NEKUDOTAYIM
%token <token> T_NAMESPACE
%token <token> T_NS_C
%token <token> T_DIR
%token <token> T_NS_SEPARATOR
%token <token> T_ELLIPSIS
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%token <token> T_EVAL
%token <token> T_REQUIRE
%token <token> T_REQUIRE_ONCE
%token <token> T_LOGICAL_OR
%token <token> T_LOGICAL_XOR
%token <token> T_LOGICAL_AND
%token <token> T_INSTANCEOF
%token <token> T_NEW
%token <token> T_CLONE
%token <token> T_ELSEIF
%token <token> T_ELSE
%token <token> T_ENDIF
%token <token> T_PRINT
%token <token> T_YIELD
%token <token> T_STATIC
%token <token> T_ABSTRACT
%token <token> T_FINAL
%token <token> T_PRIVATE
%token <token> T_PROTECTED
%token <token> T_PUBLIC
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%token <token> '"'
%token <token> '`'
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%token <token> '{'
%token <token> '}'
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%token <token> ';'
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%token <token> '('
%token <token> ')'
%token <token> '['
%token <token> ']'
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%type <value> is_reference
%type <value> is_variadic
%type <value> returns_ref
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%type <value> class_modifier
%type <token> reserved_non_modifiers
%type <token> semi_reserved
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%type <token> identifier
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%type <node> top_statement name statement function_declaration_statement
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%type <node> class_declaration_statement trait_declaration_statement
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%type <node> interface_declaration_statement
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%type <node> group_use_declaration inline_use_declaration
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%type <node> mixed_group_use_declaration use_declaration unprefixed_use_declaration
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%type <node> const_decl inner_statement
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%type <node> expr optional_expr while_statement for_statement
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%type <node> foreach_statement declare_statement finally_statement unset_variable variable
%type <node> extends_from parameter optional_type argument expr_without_variable global_var
%type <node> static_var class_statement trait_adaptation trait_precedence trait_alias
%type <node> absolute_trait_method_reference trait_method_reference property echo_expr
%type <node> new_expr anonymous_class class_name class_name_reference simple_variable
%type <node> internal_functions_in_yacc
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%type <node> exit_expr scalar lexical_var function_call member_name property_name
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%type <node> variable_class_name dereferencable_scalar constant dereferencable
%type <node> callable_expr callable_variable static_member new_variable
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%type <node> encaps_var encaps_var_offset
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%type <node> if_stmt
%type <node> alt_if_stmt
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%type <node> if_stmt_without_else
%type <node> class_const_decl
%type <node> alt_if_stmt_without_else
%type <node> array_pair possible_array_pair
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%type <node> isset_variable type return_type type_expr
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%type <node> member_modifier
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%type <node> use_type
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%type <foreachVariable> foreach_variable
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%type <strings> class_modifiers
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%type <list> encaps_list backticks_expr namespace_name catch_name_list catch_list class_const_list
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%type <list> const_list echo_expr_list for_exprs non_empty_for_exprs global_var_list
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%type <list> unprefixed_use_declarations inline_use_declarations property_list static_var_list
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%type <list> switch_case_list case_list trait_adaptation_list trait_adaptations unset_variables
%type <list> use_declarations lexical_var_list lexical_vars isset_variables non_empty_array_pair_list
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%type <list> array_pair_list ctor_arguments argument_list non_empty_argument_list top_statement_list
%type <list> inner_statement_list parameter_list non_empty_parameter_list class_statement_list
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%type <list> method_body interface_extends_list implements_list method_modifiers variable_modifiers
%type <list> non_empty_member_modifiers name_list
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%%
/////////////////////////////////////////////////////////////////////////
start:
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top_statement_list { rootnode = stmt.NewStmtList($1); }
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;
reserved_non_modifiers:
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T_INCLUDE {$$=$1} | T_INCLUDE_ONCE {$$=$1} | T_EVAL {$$=$1} | T_REQUIRE {$$=$1} | T_REQUIRE_ONCE {$$=$1} | T_LOGICAL_OR {$$=$1} | T_LOGICAL_XOR {$$=$1} | T_LOGICAL_AND {$$=$1}
| T_INSTANCEOF {$$=$1} | T_NEW {$$=$1} | T_CLONE {$$=$1} | T_EXIT {$$=$1} | T_IF {$$=$1} | T_ELSEIF {$$=$1} | T_ELSE {$$=$1} | T_ENDIF {$$=$1} | T_ECHO {$$=$1} | T_DO {$$=$1} | T_WHILE {$$=$1} | T_ENDWHILE {$$=$1}
| T_FOR {$$=$1} | T_ENDFOR {$$=$1} | T_FOREACH {$$=$1} | T_ENDFOREACH {$$=$1} | T_DECLARE {$$=$1} | T_ENDDECLARE {$$=$1} | T_AS {$$=$1} | T_TRY {$$=$1} | T_CATCH {$$=$1} | T_FINALLY {$$=$1}
| T_THROW {$$=$1} | T_USE {$$=$1} | T_INSTEADOF {$$=$1} | T_GLOBAL {$$=$1} | T_VAR {$$=$1} | T_UNSET {$$=$1} | T_ISSET {$$=$1} | T_EMPTY {$$=$1} | T_CONTINUE {$$=$1} | T_GOTO {$$=$1}
| T_FUNCTION {$$=$1} | T_CONST {$$=$1} | T_RETURN {$$=$1} | T_PRINT {$$=$1} | T_YIELD {$$=$1} | T_LIST {$$=$1} | T_SWITCH {$$=$1} | T_ENDSWITCH {$$=$1} | T_CASE {$$=$1} | T_DEFAULT {$$=$1} | T_BREAK {$$=$1}
| T_ARRAY {$$=$1} | T_CALLABLE {$$=$1} | T_EXTENDS {$$=$1} | T_IMPLEMENTS {$$=$1} | T_NAMESPACE {$$=$1} | T_TRAIT {$$=$1} | T_INTERFACE {$$=$1} | T_CLASS {$$=$1}
| T_CLASS_C {$$=$1} | T_TRAIT_C {$$=$1} | T_FUNC_C {$$=$1} | T_METHOD_C {$$=$1} | T_LINE {$$=$1} | T_FILE {$$=$1} | T_DIR {$$=$1} | T_NS_C {$$=$1}
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;
semi_reserved:
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reserved_non_modifiers {$$=$1}
| T_STATIC {$$=$1} | T_ABSTRACT {$$=$1} | T_FINAL {$$=$1} | T_PRIVATE {$$=$1} | T_PROTECTED {$$=$1} | T_PUBLIC {$$=$1}
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;
identifier:
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T_STRING { $$ = $1 }
| semi_reserved { $$ = $1 }
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;
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top_statement_list:
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top_statement_list top_statement { $$ = append($1, $2) }
| /* empty */ { $$ = []node.Node{} }
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;
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namespace_name:
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T_STRING { $$ = []node.Node{name.NewNamePart($1)} }
| namespace_name T_NS_SEPARATOR T_STRING { $$ = append($1, name.NewNamePart($3)) }
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;
name:
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namespace_name { $$ = name.NewName($1) }
| T_NAMESPACE T_NS_SEPARATOR namespace_name { $$ = name.NewRelative($3) }
| T_NS_SEPARATOR namespace_name { $$ = name.NewFullyQualified($2) }
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;
top_statement:
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statement { $$ = $1; }
| function_declaration_statement { $$ = $1; }
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| class_declaration_statement { $$ = $1; }
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| trait_declaration_statement { $$ = $1; }
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| interface_declaration_statement { $$ = $1; }
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| T_HALT_COMPILER '(' ')' ';' { $$ = stmt.NewHaltCompiler($1) }
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| T_NAMESPACE namespace_name ';' { $$ = stmt.NewNamespace($1, name.NewName($2), nil) }
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| T_NAMESPACE namespace_name '{' top_statement_list '}'
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{ $$ = stmt.NewNamespace($1, name.NewName($2), $4) }
| T_NAMESPACE '{' top_statement_list '}' { $$ = stmt.NewNamespace($1, nil, $3) }
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| T_USE mixed_group_use_declaration ';' { $$ = $2.(stmt.GroupUse).SetToken($1) }
| T_USE use_type group_use_declaration ';' { $$ = $3.(stmt.GroupUse).SetToken($1).(stmt.GroupUse).SetUseType($2) }
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| T_USE use_declarations ';' { $$ = stmt.NewUseList($1, nil, $2) }
| T_USE use_type use_declarations ';' { $$ = stmt.NewUseList($1, $2, $3) }
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| T_CONST const_list ';' { $$ = stmt.NewStmtConst($1, $2) }
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;
use_type:
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T_FUNCTION { $$ = node.NewIdentifier($1) }
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| T_CONST { $$ = node.NewIdentifier($1) }
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;
group_use_declaration:
namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations possible_comma '}'
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{
fmt.Println("group")
$$ = stmt.NewGroupUse(nil, nil, name.NewName($1), $4)
}
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| T_NS_SEPARATOR namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations possible_comma '}'
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{
$$ = stmt.NewGroupUse(nil, nil, name.NewName($2), $5)
}
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;
mixed_group_use_declaration:
namespace_name T_NS_SEPARATOR '{' inline_use_declarations possible_comma '}'
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{
fmt.Println("mixed")
$$ = stmt.NewGroupUse(nil, nil, name.NewName($1), $4)
}
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| T_NS_SEPARATOR namespace_name T_NS_SEPARATOR '{' inline_use_declarations possible_comma '}'
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{
$$ = stmt.NewGroupUse(nil, nil, name.NewName($2), $5)
}
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;
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possible_comma:
/* empty */
| ','
;
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inline_use_declarations:
inline_use_declarations ',' inline_use_declaration
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{ $$ = append($1, $3) }
| inline_use_declaration { $$ = []node.Node{$1} }
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;
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unprefixed_use_declarations:
unprefixed_use_declarations ',' unprefixed_use_declaration
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{ $$ = append($1, $3) }
| unprefixed_use_declaration { $$ = []node.Node{$1} }
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;
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use_declarations:
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use_declarations ',' use_declaration { $$ = append($1, $3) }
| use_declaration { $$ = []node.Node{$1} }
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;
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inline_use_declaration:
unprefixed_use_declaration { $$ = $1; }
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| use_type unprefixed_use_declaration { $$ = $2.(stmt.Use).SetType($1) }
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;
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unprefixed_use_declaration:
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namespace_name { $$ = stmt.NewUse(nil, name.NewName($1), nil) }
| namespace_name T_AS T_STRING { $$ = stmt.NewUse(nil, name.NewName($1), $3) }
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;
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use_declaration:
unprefixed_use_declaration { $$ = $1; }
| T_NS_SEPARATOR unprefixed_use_declaration { $$ = $2; }
;
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const_list:
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const_list ',' const_decl { $$ = append($1, $3) }
| const_decl { $$ = []node.Node{$1} }
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;
inner_statement_list:
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inner_statement_list inner_statement { $$ = append($1, $2) }
| /* empty */ { $$ = []node.Node{} }
;
inner_statement:
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statement { $$ = $1; }
| function_declaration_statement { $$ = $1; }
| class_declaration_statement { $$ = $1; }
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| trait_declaration_statement { $$ = $1; }
| interface_declaration_statement { $$ = $1; }
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| T_HALT_COMPILER '(' ')' ';' { $$ = stmt.NewHaltCompiler($1) }
statement:
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'{' inner_statement_list '}' { $$ = stmt.NewStmtList($2) }
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| if_stmt { $$ = $1; }
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| alt_if_stmt { $$ = $1; }
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| T_WHILE '(' expr ')' while_statement
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{ $$ = stmt.NewWhile($1, $3, $5) }
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| T_DO statement T_WHILE '(' expr ')' ';' { $$ = stmt.NewDo($1, $2, $5) }
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| T_FOR '(' for_exprs ';' for_exprs ';' for_exprs ')' for_statement
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{ $$ = stmt.NewFor($1, $3, $5, $7, $9) }
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| T_SWITCH '(' expr ')' switch_case_list { $$ = stmt.NewSwitch($1, $3, $5) }
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| T_BREAK optional_expr ';' { $$ = stmt.NewBreak($1, $2) }
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| T_CONTINUE optional_expr ';' { $$ = stmt.NewContinue($1, $2) }
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| T_RETURN optional_expr ';' { $$ = stmt.NewReturn($1, $2) }
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| T_GLOBAL global_var_list ';' { $$ = stmt.NewGlobal($1, $2) }
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| T_STATIC static_var_list ';' { $$ = stmt.NewStatic($1, $2); }
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| T_ECHO echo_expr_list ';' { $$ = stmt.NewEcho($1, $2) }
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| T_INLINE_HTML { $$ = stmt.NewInlineHtml($1) }
2017-12-07 10:44:04 +00:00
| expr ';' { $$ = stmt.NewExpression($1); }
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| T_UNSET '(' unset_variables possible_comma ')' ';'
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{ $$ = stmt.NewUnset($1, $3) }
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| T_FOREACH '(' expr T_AS foreach_variable ')' foreach_statement
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{ $$ = stmt.NewForeach($1, $3, nil, $5.node, $7, $5.byRef); }
| T_FOREACH '(' expr T_AS variable T_DOUBLE_ARROW foreach_variable ')' foreach_statement
{ $$ = stmt.NewForeach($1, $3, $5, $7.node, $9, $7.byRef); }
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| T_DECLARE '(' const_list ')' declare_statement { $$ = stmt.NewDeclare($1, $3, $5) }
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| ';' { $$ = stmt.NewNop($1) }
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| T_TRY '{' inner_statement_list '}' catch_list finally_statement
{
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$$ = stmt.NewTry($1, $3, $5, $6)
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}
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| T_THROW expr ';' { $$ = stmt.NewThrow($1, $2) }
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| T_GOTO T_STRING ';' { $$ = stmt.NewGoto($1, $2) }
2017-12-08 10:01:52 +00:00
| T_STRING ':' { $$ = stmt.NewLabel($1) }
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catch_list:
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/* empty */ { $$ = []node.Node{} }
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| catch_list T_CATCH '(' catch_name_list T_VARIABLE ')' '{' inner_statement_list '}'
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{ $$ = append($1, stmt.NewCatch($2, $4, expr.NewVariable(node.NewIdentifier($5)), $8)) }
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;
catch_name_list:
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name { $$ = []node.Node{$1} }
| catch_name_list '|' name { $$ = append($1, $3) }
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;
finally_statement:
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/* empty */ { $$ = nil }
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| T_FINALLY '{' inner_statement_list '}' { $$ = stmt.NewFinally($1, $3) }
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;
2017-11-29 13:33:59 +00:00
2017-12-01 07:15:46 +00:00
unset_variables:
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unset_variable { $$ = []node.Node{$1} }
| unset_variables ',' unset_variable { $$ = append($1, $3) }
2017-11-28 20:04:30 +00:00
;
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unset_variable:
variable { $$ = $1 }
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;
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function_declaration_statement:
T_FUNCTION returns_ref T_STRING '(' parameter_list ')' return_type '{' inner_statement_list '}'
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{
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$$ = stmt.NewFunction($3, $2 == "true", $5, $7, $9)
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}
;
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is_reference:
/* empty */ { $$ = "false"; }
| '&' { $$ = "true"; }
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;
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is_variadic:
/* empty */ { $$ = "false"; }
| T_ELLIPSIS { $$ = "true"; }
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;
class_declaration_statement:
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class_modifiers T_CLASS T_STRING extends_from implements_list '{' class_statement_list '}'
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{ $$ = stmt.NewClass($3, $1, nil, $4, $5, $7) }
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| T_CLASS T_STRING extends_from implements_list '{' class_statement_list '}'
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{ $$ = stmt.NewClass($2, nil, nil, $3, $4, $6) }
;
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class_modifiers:
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class_modifier { $$ = []string{$1} }
| class_modifiers class_modifier { $$ = append($1, $2) }
;
class_modifier:
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T_ABSTRACT { $$ = "abstract" }
| T_FINAL { $$ = "final" }
;
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trait_declaration_statement:
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T_TRAIT T_STRING '{' class_statement_list '}' { $$ = stmt.NewTrait($2, $4) }
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;
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interface_declaration_statement:
T_INTERFACE T_STRING interface_extends_list '{' class_statement_list '}'
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{ $$ = stmt.NewInterface($1, $2, $3, $5) }
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;
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extends_from:
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/* empty */ { $$ = nil }
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| T_EXTENDS name { $$ = $2; }
;
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interface_extends_list:
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/* empty */ { $$ = nil }
| T_EXTENDS name_list { $$ = $2 }
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;
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implements_list:
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/* empty */ { $$ = nil }
| T_IMPLEMENTS name_list { $$ = $2 }
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;
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foreach_variable:
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variable { $$ = foreachVariable{$1, false} }
| '&' variable { $$ = foreachVariable{$2, true} }
| T_LIST '(' array_pair_list ')' { $$ = foreachVariable{expr.NewList($3), false} }
| '[' array_pair_list ']' { $$ = foreachVariable{expr.NewShortList($2), false} }
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;
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for_statement:
statement { $$ = $1; }
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| ':' inner_statement_list T_ENDFOR ';' { $$ = stmt.NewStmtList($2); }
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;
foreach_statement:
statement { $$ = $1; }
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| ':' inner_statement_list T_ENDFOREACH ';' { $$ = stmt.NewStmtList($2); }
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;
declare_statement:
statement { $$ = $1; }
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| ':' inner_statement_list T_ENDDECLARE ';' { $$ = stmt.NewStmtList($2); }
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;
switch_case_list:
'{' case_list '}' { $$ = $2; }
| '{' ';' case_list '}' { $$ = $3; }
| ':' case_list T_ENDSWITCH ';' { $$ = $2; }
| ':' ';' case_list T_ENDSWITCH ';' { $$ = $3; }
;
case_list:
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/* empty */ { $$ = []node.Node{} }
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| case_list T_CASE expr case_separator inner_statement_list
{
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$$ = append($1, stmt.NewCase($2, $3, $5))
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}
| case_list T_DEFAULT case_separator inner_statement_list
{
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$$ = append($1, stmt.NewDefault($2, $4))
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}
;
case_separator:
':'
| ';'
;
while_statement:
statement { $$ = $1; }
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| ':' inner_statement_list T_ENDWHILE ';' { $$ = stmt.NewStmtList($2); }
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;
if_stmt_without_else:
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T_IF '(' expr ')' statement { $$ = stmt.NewIf($1, $3, $5) }
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| if_stmt_without_else T_ELSEIF '(' expr ')' statement
{
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_elseIf := stmt.NewElseIf($2, $4, $6)
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$$ = $1.(stmt.If).AddElseIf(_elseIf)
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}
;
if_stmt:
if_stmt_without_else %prec T_NOELSE { $$ = $1; }
| if_stmt_without_else T_ELSE statement
{
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_else := stmt.NewElse($2, $3)
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$$ = $1.(stmt.If).SetElse(_else)
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}
;
alt_if_stmt_without_else:
T_IF '(' expr ')' ':' inner_statement_list
{
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$$ = stmt.NewAltIf($1, $3, stmt.NewStmtList($6))
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}
| alt_if_stmt_without_else T_ELSEIF '(' expr ')' ':' inner_statement_list
{
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_elseIf := stmt.NewAltElseIf($2, $4, stmt.NewStmtList($7))
$$ = $1.(stmt.AltIf).AddElseIf(_elseIf)
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}
;
alt_if_stmt:
alt_if_stmt_without_else T_ENDIF ';' { $$ = $1; }
| alt_if_stmt_without_else T_ELSE ':' inner_statement_list T_ENDIF ';'
{
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_else := stmt.NewAltElse($2, stmt.NewStmtList($4))
$$ = $1.(stmt.AltIf).SetElse(_else)
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}
;
parameter_list:
non_empty_parameter_list { $$ = $1; }
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| /* empty */ { $$ = nil }
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;
non_empty_parameter_list:
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parameter { $$ = []node.Node{$1} }
| non_empty_parameter_list ',' parameter { $$ = append($1, $3) }
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;
parameter:
optional_type is_reference is_variadic T_VARIABLE
{
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$$ = node.NewSimpleNode("Parameter").
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Append($1).
Attribute("is_reference", $2).
Attribute("is_variadic", $3).
Attribute("var", $4.String());
2017-12-01 07:15:46 +00:00
}
| optional_type is_reference is_variadic T_VARIABLE '=' expr
{
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$$ = node.NewSimpleNode("Parameter").
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Append($1).
Attribute("is_reference", $2).
Attribute("is_variadic", $3).
Attribute("var", $4.String()).
Append($6);
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}
;
optional_type:
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/* empty */ { $$ = node.NewSimpleNode("No type") }
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| type_expr { $$ = $1; }
;
type_expr:
type { $$ = $1; }
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| '?' type { $$ = $2; $$.Attribute("nullable", "true") }
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;
type:
T_ARRAY { $$ = node.NewIdentifier($1) }
| T_CALLABLE { $$ = node.NewIdentifier($1) }
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| name { $$ = $1; }
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;
return_type:
/* empty */ { $$ = nil }
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| ':' type_expr { $$ = $2; }
;
argument_list:
'(' ')' { $$ = []node.Node{} }
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| '(' non_empty_argument_list possible_comma ')' { $$ = $2; }
;
non_empty_argument_list:
argument { $$ = []node.Node{$1} }
| non_empty_argument_list ',' argument { $$ = append($1, $3) }
2017-12-01 07:15:46 +00:00
;
argument:
expr { $$ = $1; }
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| T_ELLIPSIS expr { $$ = node.NewSimpleNode("Unpack").Append($2) }
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;
global_var_list:
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global_var_list ',' global_var { $$ = append($1, $3); }
| global_var { $$ = []node.Node{$1} }
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;
global_var:
simple_variable { $$ = $1 }
;
static_var_list:
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static_var_list ',' static_var { $$ = append($1, $3) }
| static_var { $$ = []node.Node{$1} }
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;
static_var:
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T_VARIABLE { $$ = stmt.NewStaticVar($1, nil) }
| T_VARIABLE '=' expr { $$ = stmt.NewStaticVar($1, $3) }
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;
class_statement_list:
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class_statement_list class_statement { $$ = append($1, $2) }
| /* empty */ { $$ = []node.Node{} }
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;
class_statement:
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variable_modifiers property_list ';' { $$ = stmt.NewPropertyList($1, $2) }
2017-12-22 11:20:34 +00:00
| method_modifiers T_CONST class_const_list ';' { $$ = stmt.NewClassConst($2, $1, $3); }
| T_USE name_list trait_adaptations { $$ = stmt.NewTraitUse($1, $2, $3) }
2017-12-07 10:34:39 +00:00
| method_modifiers T_FUNCTION returns_ref identifier '(' parameter_list ')' return_type method_body
2017-12-01 07:15:46 +00:00
{
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$$ = stmt.NewClassMethod($4, $1, $3 == "true", $6, $8, $9)
2017-11-29 22:07:15 +00:00
}
2017-11-29 14:21:44 +00:00
;
2017-11-29 21:43:39 +00:00
name_list:
name { $$ = []node.Node{$1} }
| name_list ',' name { $$ = append($1, $3) }
2017-11-29 21:43:39 +00:00
;
trait_adaptations:
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';' { $$ = nil }
| '{' '}' { $$ = nil }
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| '{' trait_adaptation_list '}' { $$ = $2; }
;
trait_adaptation_list:
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trait_adaptation { $$ = []node.Node{$1} }
| trait_adaptation_list trait_adaptation { $$ = append($1, $2) }
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;
trait_adaptation:
trait_precedence ';' { $$ = $1; }
| trait_alias ';' { $$ = $1; }
;
trait_precedence:
absolute_trait_method_reference T_INSTEADOF name_list
2017-12-09 11:05:12 +00:00
{
$$ = stmt.NewTraitUsePrecedence($1, name.NewName($3))
2017-12-09 11:05:12 +00:00
}
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;
trait_alias:
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trait_method_reference T_AS T_STRING { $$ = stmt.NewTraitUseAlias($1, nil, $3) }
2017-11-29 21:43:39 +00:00
| trait_method_reference T_AS reserved_non_modifiers
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{ $$ = stmt.NewTraitUseAlias($1, nil, $3) }
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| trait_method_reference T_AS member_modifier identifier
2017-12-09 10:58:35 +00:00
{ $$ = stmt.NewTraitUseAlias($1, $3, $4) }
| trait_method_reference T_AS member_modifier { $$ = stmt.NewTraitUseAlias($1, $3, nil) }
2017-11-29 21:43:39 +00:00
;
2017-12-01 07:15:46 +00:00
2017-11-29 21:43:39 +00:00
trait_method_reference:
2017-12-09 11:13:12 +00:00
identifier { $$ = stmt.NewTraitMethodRef(nil, $1) }
2017-11-29 21:43:39 +00:00
| absolute_trait_method_reference { $$ = $1; }
;
absolute_trait_method_reference:
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name T_PAAMAYIM_NEKUDOTAYIM identifier { $$ = stmt.NewTraitMethodRef($1, $3) }
2017-11-29 22:07:15 +00:00
;
method_body:
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';' /* abstract method */ { $$ = nil }
| '{' inner_statement_list '}' { $$ = $2 }
2017-11-29 22:07:15 +00:00
;
2017-11-29 21:43:39 +00:00
2017-11-29 14:21:44 +00:00
variable_modifiers:
non_empty_member_modifiers { $$ = $1; }
2017-12-22 11:20:34 +00:00
| T_VAR { $$ = []node.Node{node.NewIdentifier($1)} }
2017-11-29 14:21:44 +00:00
;
2017-11-29 20:56:37 +00:00
method_modifiers:
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/* empty */ { $$ = nil }
| non_empty_member_modifiers { $$ = $1 }
2017-12-01 07:15:46 +00:00
;
2017-11-29 20:56:37 +00:00
2017-11-29 14:21:44 +00:00
non_empty_member_modifiers:
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member_modifier { $$ = []node.Node{$1} }
| non_empty_member_modifiers member_modifier { $$ = append($1, $2) }
2017-11-29 14:21:44 +00:00
;
2017-12-01 07:15:46 +00:00
2017-11-29 14:21:44 +00:00
member_modifier:
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T_PUBLIC { $$ = node.NewIdentifier($1) }
| T_PROTECTED { $$ = node.NewIdentifier($1) }
| T_PRIVATE { $$ = node.NewIdentifier($1) }
| T_STATIC { $$ = node.NewIdentifier($1) }
| T_ABSTRACT { $$ = node.NewIdentifier($1) }
| T_FINAL { $$ = node.NewIdentifier($1) }
2017-11-29 14:21:44 +00:00
;
property_list:
2017-12-08 15:08:22 +00:00
property_list ',' property { $$ = append($1, $3) }
| property { $$ = []node.Node{$1} }
2017-11-29 14:21:44 +00:00
;
2017-12-01 07:15:46 +00:00
2017-11-29 14:21:44 +00:00
property:
2017-12-08 15:08:22 +00:00
T_VARIABLE { $$ = stmt.NewProperty($1, nil) }
| T_VARIABLE '=' expr { $$ = stmt.NewProperty($1, $3) }
2017-11-29 14:21:44 +00:00
;
2017-12-01 07:15:46 +00:00
class_const_list:
2017-12-06 18:52:51 +00:00
class_const_list ',' class_const_decl { $$ = append($1, $3) }
| class_const_decl { $$ = []node.Node{$1} }
;
2017-12-01 07:15:46 +00:00
class_const_decl:
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identifier '=' expr { $$ = stmt.NewConstant($1, $3) }
;
2017-12-01 07:15:46 +00:00
const_decl:
2017-12-06 18:52:51 +00:00
T_STRING '=' expr { $$ = stmt.NewConstant($1, $3) }
;
2017-12-01 07:15:46 +00:00
echo_expr_list:
2017-12-06 21:10:16 +00:00
echo_expr_list ',' echo_expr { $$ = append($1, $3) }
| echo_expr { $$ = []node.Node{$1} }
;
2017-12-01 07:15:46 +00:00
echo_expr:
2017-12-06 21:10:16 +00:00
expr { $$ = $1 }
;
2017-12-01 07:15:46 +00:00
for_exprs:
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/* empty */ { $$ = nil; }
2017-12-01 07:15:46 +00:00
| non_empty_for_exprs { $$ = $1; }
;
2017-12-01 07:15:46 +00:00
non_empty_for_exprs:
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non_empty_for_exprs ',' expr { $$ = append($1, $3) }
| expr { $$ = []node.Node{$1} }
;
2017-12-01 07:15:46 +00:00
anonymous_class:
T_CLASS ctor_arguments extends_from implements_list '{' class_statement_list '}'
{
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{ $$ = stmt.NewClass($1, nil, $2, $3, $4, $6) }
2017-12-01 07:15:46 +00:00
}
;
2017-12-01 07:15:46 +00:00
new_expr:
T_NEW class_name_reference ctor_arguments { $$ = expr.NewNew($2, $3) }
2017-12-18 16:51:16 +00:00
| T_NEW anonymous_class { $$ = expr.NewNew($2, nil) }
2017-11-28 16:00:27 +00:00
;
expr_without_variable:
T_LIST '(' array_pair_list ')' '=' expr
{
list := expr.NewList($3)
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$$ = assign_op.NewAssign(list, $6)
}
| '[' array_pair_list ']' '=' expr
{
shortList := expr.NewShortList($2)
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$$ = assign_op.NewAssign(shortList, $5)
}
2017-12-18 19:34:11 +00:00
| variable '=' expr { $$ = assign_op.NewAssign($1, $3) }
| variable '=' '&' expr { $$ = assign_op.NewAssignRef($1, $4) }
2017-12-16 20:17:31 +00:00
| T_CLONE expr { $$ = expr.NewClone($2) }
2017-12-12 21:26:00 +00:00
| variable T_PLUS_EQUAL expr { $$ = assign_op.NewPlus($1, $3) }
| variable T_MINUS_EQUAL expr { $$ = assign_op.NewMinus($1, $3) }
| variable T_MUL_EQUAL expr { $$ = assign_op.NewMul($1, $3) }
| variable T_POW_EQUAL expr { $$ = assign_op.NewPow($1, $3) }
| variable T_DIV_EQUAL expr { $$ = assign_op.NewDiv($1, $3) }
| variable T_CONCAT_EQUAL expr { $$ = assign_op.NewConcat($1, $3) }
| variable T_MOD_EQUAL expr { $$ = assign_op.NewMod($1, $3) }
| variable T_AND_EQUAL expr { $$ = assign_op.NewBitwiseAnd($1, $3) }
| variable T_OR_EQUAL expr { $$ = assign_op.NewBitwiseOr($1, $3) }
| variable T_XOR_EQUAL expr { $$ = assign_op.NewBitwiseXor($1, $3) }
| variable T_SL_EQUAL expr { $$ = assign_op.NewShiftLeft($1, $3) }
| variable T_SR_EQUAL expr { $$ = assign_op.NewShiftRight($1, $3) }
| variable T_INC { $$ = expr.NewPostInc($1) }
| T_INC variable { $$ = expr.NewPreInc($2) }
| variable T_DEC { $$ = expr.NewPostDec($1) }
| T_DEC variable { $$ = expr.NewPreDec($2) }
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| expr T_BOOLEAN_OR expr { $$ = binary_op.NewBooleanOr($1, $3) }
| expr T_BOOLEAN_AND expr { $$ = binary_op.NewBooleanAnd($1, $3) }
| expr T_LOGICAL_OR expr { $$ = binary_op.NewLogicalOr($1, $3) }
| expr T_LOGICAL_AND expr { $$ = binary_op.NewLogicalAnd($1, $3) }
| expr T_LOGICAL_XOR expr { $$ = binary_op.NewLogicalXor($1, $3) }
| expr '|' expr { $$ = binary_op.NewBitwiseOr($1, $3) }
| expr '&' expr { $$ = binary_op.NewBitwiseAnd($1, $3) }
| expr '^' expr { $$ = binary_op.NewBitwiseXor($1, $3) }
| expr '.' expr { $$ = binary_op.NewConcat($1, $3) }
| expr '+' expr { $$ = binary_op.NewPlus($1, $3) }
| expr '-' expr { $$ = binary_op.NewMinus($1, $3) }
| expr '*' expr { $$ = binary_op.NewMul($1, $3) }
| expr T_POW expr { $$ = binary_op.NewPow($1, $3) }
| expr '/' expr { $$ = binary_op.NewDiv($1, $3) }
| expr '%' expr { $$ = binary_op.NewMod($1, $3) }
| expr T_SL expr { $$ = binary_op.NewShiftLeft($1, $3) }
| expr T_SR expr { $$ = binary_op.NewShiftRight($1, $3) }
| '+' expr %prec T_INC { $$ = expr.NewUnaryPlus($2) }
| '-' expr %prec T_INC { $$ = expr.NewUnaryMinus($2) }
| '!' expr { $$ = expr.NewBooleanNot($2) }
| '~' expr { $$ = expr.NewBitwiseNot($2) }
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| expr T_IS_IDENTICAL expr { $$ = binary_op.NewIdentical($1, $3) }
| expr T_IS_NOT_IDENTICAL expr { $$ = binary_op.NewNotIdentical($1, $3) }
| expr T_IS_EQUAL expr { $$ = binary_op.NewEqual($1, $3) }
| expr T_IS_NOT_EQUAL expr { $$ = binary_op.NewNotEqual($1, $3) }
| expr '<' expr { $$ = binary_op.NewSmaller($1, $3) }
| expr T_IS_SMALLER_OR_EQUAL expr { $$ = binary_op.NewSmallerOrEqual($1, $3) }
| expr '>' expr { $$ = binary_op.NewGreater($1, $3) }
| expr T_IS_GREATER_OR_EQUAL expr { $$ = binary_op.NewGreaterOrEqual($1, $3) }
| expr T_SPACESHIP expr { $$ = binary_op.NewSpaceship($1, $3) }
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| expr T_INSTANCEOF class_name_reference { $$ = expr.NewInstanceOf($1, $3) }
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| '(' expr ')' { $$ = $2; }
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| new_expr { $$ = $1; }
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| expr '?' expr ':' expr { $$ = expr.NewTernary($1, $3, $5) }
| expr '?' ':' expr { $$ = expr.NewTernary($1, nil, $4) }
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| expr T_COALESCE expr { $$ = binary_op.NewCoalesce($1, $3) }
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| internal_functions_in_yacc { $$ = $1}
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| T_INT_CAST expr { $$ = cast.NewCastInt($2) }
| T_DOUBLE_CAST expr { $$ = cast.NewCastDouble($2) }
| T_STRING_CAST expr { $$ = cast.NewCastString($2) }
| T_ARRAY_CAST expr { $$ = cast.NewCastArray($2) }
| T_OBJECT_CAST expr { $$ = cast.NewCastObject($2) }
| T_BOOL_CAST expr { $$ = cast.NewCastBool($2) }
| T_UNSET_CAST expr { $$ = cast.NewCastUnset($2) }
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| T_EXIT exit_expr { $$ = expr.NewExit($2, strings.EqualFold($1.Value, "die")) }
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| '@' expr { $$ = expr.NewErrorSuppress($2) }
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| scalar { $$ = $1; }
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| '`' backticks_expr '`' { $$ = expr.NewShellExec($2) }
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| T_PRINT expr { $$ = expr.NewPrint($2) }
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| T_YIELD { $$ = expr.NewYield(nil, nil) }
| T_YIELD expr { $$ = expr.NewYield(nil, $2) }
| T_YIELD expr T_DOUBLE_ARROW expr { $$ = expr.NewYield($2, $4) }
| T_YIELD_FROM expr { $$ = expr.NewYieldFrom($2) }
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| T_FUNCTION returns_ref '(' parameter_list ')' lexical_vars return_type '{' inner_statement_list '}'
{
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$$ = expr.NewClosure($4, $6, $7, $9, false, $2 == "true")
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}
| T_STATIC T_FUNCTION returns_ref '(' parameter_list ')' lexical_vars return_type '{' inner_statement_list '}'
{
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$$ = expr.NewClosure($5, $7, $8, $10, true, $3 == "true")
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}
;
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returns_ref:
/* empty */ { $$ = "false"; }
| '&' { $$ = "true"; }
;
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lexical_vars:
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/* empty */ { $$ = []node.Node{} }
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| T_USE '(' lexical_var_list ')' { $$ = $3; }
;
lexical_var_list:
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lexical_var_list ',' lexical_var { $$ = append($1, $3) }
| lexical_var { $$ = []node.Node{$1} }
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;
lexical_var:
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T_VARIABLE { $$ = expr.NewClusureUse(expr.NewVariable(node.NewIdentifier($1)), false) }
| '&' T_VARIABLE { $$ = expr.NewClusureUse(expr.NewVariable(node.NewIdentifier($2)), true) }
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;
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function_call:
name argument_list { $$ = expr.NewFunctionCall($1, $2) }
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| class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$ = expr.NewStaticCall($1, $3, $4) }
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| variable_class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$ = expr.NewStaticCall($1, $3, $4) }
| callable_expr argument_list { $$ = expr.NewFunctionCall($1, $2) }
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;
class_name:
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T_STATIC { $$ = node.NewIdentifier($1) }
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| name { $$ = $1; }
;
class_name_reference:
class_name { $$ = $1; }
| new_variable { $$ = $1; }
;
exit_expr:
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/* empty */ { $$ = nil }
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| '(' optional_expr ')' { $$ = $2; }
;
backticks_expr:
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/* empty */ { $$ = []node.Node{} }
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| T_ENCAPSED_AND_WHITESPACE { $$ = []node.Node{scalar.NewEncapsedStringPart($1)} }
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| encaps_list { $$ = $1; }
;
ctor_arguments:
/* empty */ { $$ = nil }
| argument_list { $$ = $1 }
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;
dereferencable_scalar:
T_ARRAY '(' array_pair_list ')' { $$ = expr.NewArray($1, $4, $3) }
| '[' array_pair_list ']' { $$ = expr.NewShortArray($1, $3, $2) }
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| T_CONSTANT_ENCAPSED_STRING { $$ = scalar.NewString($1) }
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;
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scalar:
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T_LNUMBER { $$ = scalar.NewLnumber($1) }
| T_DNUMBER { $$ = scalar.NewDnumber($1) }
| T_LINE { $$ = scalar.NewMagicConstant($1) }
| T_FILE { $$ = scalar.NewMagicConstant($1) }
| T_DIR { $$ = scalar.NewMagicConstant($1) }
| T_TRAIT_C { $$ = scalar.NewMagicConstant($1) }
| T_METHOD_C { $$ = scalar.NewMagicConstant($1) }
| T_FUNC_C { $$ = scalar.NewMagicConstant($1) }
| T_NS_C { $$ = scalar.NewMagicConstant($1) }
| T_CLASS_C { $$ = scalar.NewMagicConstant($1) }
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| T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC
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{ $$ = scalar.NewString($2) /* TODO: mark as Heredoc*/ }
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| T_START_HEREDOC T_END_HEREDOC
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{ $$ = scalar.NewEncapsed($1, nil, $2) }
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| '"' encaps_list '"' { $$ = scalar.NewEncapsed($1, $2, $3) }
| T_START_HEREDOC encaps_list T_END_HEREDOC { $$ = scalar.NewEncapsed($1, $2, $3) }
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| dereferencable_scalar { $$ = $1; }
| constant { $$ = $1; }
;
constant:
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name { $$ = expr.NewConstFetch($1) }
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| class_name T_PAAMAYIM_NEKUDOTAYIM identifier { $$ = expr.NewClassConstFetch($1, $3) }
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| variable_class_name T_PAAMAYIM_NEKUDOTAYIM identifier
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{ $$ = expr.NewClassConstFetch($1, $3) }
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;
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expr:
variable { $$ = $1; }
| expr_without_variable { $$ = $1; }
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;
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optional_expr:
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/* empty */ { $$ = nil }
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| expr { $$ = $1; }
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;
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variable_class_name:
dereferencable { $$ = $1; }
;
dereferencable:
variable { $$ = $1; }
| '(' expr ')' { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
;
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callable_expr:
callable_variable { $$ = $1; }
| '(' expr ')' { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
;
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callable_variable:
simple_variable { $$ = $1; }
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| dereferencable '[' optional_expr ']' { $$ = expr.NewArrayDimFetch($1, $3) }
| constant '[' optional_expr ']' { $$ = expr.NewArrayDimFetch($1, $3) }
| dereferencable '{' expr '}' { $$ = expr.NewArrayDimFetch($1, $3) }
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| dereferencable T_OBJECT_OPERATOR property_name argument_list
{ $$ = expr.NewMethodCall($1, $3, $4) }
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| function_call { $$ = $1; }
;
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variable:
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callable_variable { $$ = $1; }
| static_member { $$ = $1; }
| dereferencable T_OBJECT_OPERATOR property_name { $$ = expr.NewPropertyFetch($1, $3) }
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;
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simple_variable:
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T_VARIABLE { $$ = expr.NewVariable(node.NewIdentifier($1)) }
| '$' '{' expr '}' { $$ = expr.NewVariable($3) }
| '$' simple_variable { $$ = expr.NewVariable($2) }
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;
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static_member:
class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = expr.NewStaticPropertyFetch($1, $3) }
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| variable_class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = expr.NewStaticPropertyFetch($1, $3) }
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;
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new_variable:
simple_variable { $$ = $1 }
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| new_variable '[' optional_expr ']' { $$ = expr.NewArrayDimFetch($1, $3) }
| new_variable '{' expr '}' { $$ = expr.NewArrayDimFetch($1, $3) }
| new_variable T_OBJECT_OPERATOR property_name { $$ = expr.NewPropertyFetch($1, $3) }
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| class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = expr.NewStaticPropertyFetch($1, $3) }
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| new_variable T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = expr.NewStaticPropertyFetch($1, $3) }
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;
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member_name:
identifier { $$ = node.NewIdentifier($1) }
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| '{' expr '}' { $$ = $2; }
| simple_variable { $$ = $1 }
;
property_name:
T_STRING { $$ = node.NewIdentifier($1) }
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| '{' expr '}' { $$ = $2; }
| simple_variable { $$ = $1 }
;
array_pair_list:
non_empty_array_pair_list
{
if ($1[len($1)-1] == nil) {
$$ = $1[:len($1)-1]
} else {
$$ = $1
}
}
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;
possible_array_pair:
/* empty */ { $$ = nil }
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| array_pair { $$ = $1; }
;
non_empty_array_pair_list:
non_empty_array_pair_list ',' possible_array_pair
{ $$ = append($1, $3) }
| possible_array_pair { $$ = []node.Node{$1} }
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;
array_pair:
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expr T_DOUBLE_ARROW expr { $$ = expr.NewArrayItem($1, $3, false) }
| expr { $$ = expr.NewArrayItem(nil, $1, false) }
| expr T_DOUBLE_ARROW '&' variable { $$ = expr.NewArrayItem($1, $4, true) }
| '&' variable { $$ = expr.NewArrayItem(nil, $2, true) }
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| expr T_DOUBLE_ARROW T_LIST '(' array_pair_list ')'
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{
// TODO: Cannot use list() as standalone expression
list := expr.NewList($5)
$$ = expr.NewArrayItem($1, list, false)
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}
| T_LIST '(' array_pair_list ')'
{
// TODO: Cannot use list() as standalone expression
list := expr.NewList($3)
$$ = expr.NewArrayItem(nil, list, false)
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}
;
encaps_list:
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encaps_list encaps_var { $$ = append($1, $2) }
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| encaps_list T_ENCAPSED_AND_WHITESPACE { $$ = append($1, scalar.NewEncapsedStringPart($2)) }
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| encaps_var { $$ = []node.Node{$1} }
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| T_ENCAPSED_AND_WHITESPACE encaps_var { $$ = []node.Node{scalar.NewEncapsedStringPart($1), $2} }
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;
encaps_var:
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T_VARIABLE { $$ = expr.NewVariable(node.NewIdentifier($1)) }
| T_VARIABLE '[' encaps_var_offset ']' { $$ = expr.NewArrayDimFetch(expr.NewVariable(node.NewIdentifier($1)), $3) }
| T_VARIABLE T_OBJECT_OPERATOR T_STRING { $$ = expr.NewPropertyFetch(expr.NewVariable(node.NewIdentifier($1)), node.NewIdentifier($3)) }
| T_DOLLAR_OPEN_CURLY_BRACES expr '}' { $$ = expr.NewVariable($2) }
| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}' { $$ = expr.NewVariable(node.NewIdentifier($2)) }
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| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '[' expr ']' '}'
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{ $$ = expr.NewArrayDimFetch(expr.NewVariable(node.NewIdentifier($2)), $4) }
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| T_CURLY_OPEN variable '}' { $$ = $2; }
;
encaps_var_offset:
T_STRING { $$ = scalar.NewString($1) }
| T_NUM_STRING
{
// TODO: add option to handle 64 bit integer
if _, err := strconv.Atoi($1.Value); err == nil {
$$ = scalar.NewLnumber($1)
} else {
$$ = scalar.NewString($1)
}
}
| '-' T_NUM_STRING
{
// TODO: add option to handle 64 bit integer
if _, err := strconv.Atoi($2.Value); err == nil {
$$ = expr.NewUnaryMinus(scalar.NewLnumber($2))
} else {
$2.Value = "-"+$2.Value
$$ = scalar.NewString($2)
}
}
| T_VARIABLE { $$ = expr.NewVariable(node.NewIdentifier($1)) }
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;
internal_functions_in_yacc:
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T_ISSET '(' isset_variables possible_comma ')' { $$ = expr.NewIsset($3) }
| T_EMPTY '(' expr ')' { $$ = expr.NewEmpty($3) }
| T_INCLUDE expr { $$ = expr.NewInclude($2) }
| T_INCLUDE_ONCE expr { $$ = expr.NewIncludeOnce($2) }
| T_EVAL '(' expr ')' { $$ = expr.NewEval($3) }
| T_REQUIRE expr { $$ = expr.NewRequire($2) }
| T_REQUIRE_ONCE expr { $$ = expr.NewRequireOnce($2) }
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;
isset_variables:
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isset_variable { $$ = []node.Node{$1} }
| isset_variables ',' isset_variable { $$ = append($1, $3) }
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;
isset_variable:
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expr { $$ = $1 }
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;
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/////////////////////////////////////////////////////////////////////////
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%%