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php-parser/parser.y

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parser, first try
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%{
package main
import (
"bytes"
"fmt"
"os"
"io"
)
type node struct {
name string
children []node
parse func declaration and class declaration
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attributes map[string]string
parser, first try
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}
func (n node) String() string {
buf := new(bytes.Buffer)
n.print(buf, " ")
return buf.String()
}
func (n node) print(out io.Writer, indent string) {
parse func declaration and class declaration
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if (len(n.attributes) > 0) {
fmt.Fprintf(out, "\n%v%v %s", indent, n.name, n.attributes)
} else {
fmt.Fprintf(out, "\n%v%v", indent, n.name)
}
for _, nn := range n.children {
nn.print(out, indent + " ")
}
parser, first try
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}
parse func declaration and class declaration
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func Node(name string) node {
return node{name: name, attributes: make(map[string]string)}
}
func (n node) append(nn...node) node {
n.children = append(n.children, nn...)
return n
}
func (n node) attribute(key string, value string) node {
n.attributes[key] = value
return n
}
parser, first try
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%}
%union{
node node
token string
parse namespace
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value string
parser, first try
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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
parse `if` stmt
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%left T_NOELSE
parser, first try
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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
parse namespace
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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
parse identifier value
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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
parser, first try
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parse func declaration and class declaration
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%type <value> class_modifier
%type <value> is_reference
%type <value> is_variadic
%type <value> returns_ref
parse identifier value
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%type <value> reserved_non_modifiers
%type <value> semi_reserved
parse func declaration and class declaration
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parser, first try
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%type <node> identifier
parse namespace
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%type <node> top_statement
%type <node> namespace_name
parse ns types
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%type <node> name
parse namespace
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%type <node> top_statement_list
parse func declaration and class declaration
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%type <node> statement
%type <node> inner_statement
%type <node> inner_statement_list
%type <node> class_modifiers
%type <node> class_declaration_statement
%type <node> function_declaration_statement
%type <node> optional_type
%type <node> return_type
%type <node> type_expr
%type <node> type
%type <node> parameter_list
%type <node> non_empty_parameter_list
%type <node> parameter
parse expressions
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%type <node> expr
%type <node> expr_without_variable
%type <node> callable_variable
%type <node> variable
%type <node> simple_variable
parse `if` stmt
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%type <node> if_stmt_without_else
%type <node> if_stmt
parse AltIf stmt
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%type <node> alt_if_stmt_without_else
%type <node> alt_if_stmt
parse While DoWhile stmt
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%type <node> while_statement
parse For stmt
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%type <node> for_exprs
%type <node> non_empty_for_exprs
%type <node> for_statement
parse Switch stmt
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%type <node> switch_case_list
%type <node> case_list
parse Break Continue Return stmt
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%type <node> optional_expr
parse Global StaticVariables Echo stmt
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%type <node> global_var_list
%type <node> global_var
%type <node> static_var_list
%type <node> static_var
%type <node> echo_expr_list
%type <node> echo_expr
parse Unset stmt
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%type <node> unset_variables
%type <node> unset_variable
parse Foreach stmt
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%type <node> foreach_variable
%type <node> array_pair_list
%type <node> possible_array_pair
%type <node> non_empty_array_pair_list
%type <node> array_pair
%type <node> foreach_statement
parse Declare stmt
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%type <node> const_list
%type <node> const_decl
%type <node> declare_statement
parse try catch finally stmt
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%type <node> catch_list
%type <node> catch_name_list
%type <node> finally_statement
parse class properties
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%type <node> class_statement_list
%type <node> class_statement
%type <node> variable_modifiers
%type <node> non_empty_member_modifiers
%type <node> member_modifier
%type <node> property_list
%type <node> property
parse class constant
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%type <node> class_const_list
%type <node> class_const_decl
%type <node> method_modifiers
parse method use stmt
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%type <node> name_list
%type <node> trait_adaptations
%type <node> trait_adaptation_list
%type <node> trait_adaptation
%type <node> trait_precedence
%type <node> trait_alias
%type <node> trait_method_reference
%type <node> absolute_trait_method_reference
parse class method
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%type <node> method_body
parse constant and string
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%type <node> scalar
%type <node> encaps_list
%type <node> encaps_var
%type <node> encaps_var_offset
%type <node> constant
%type <node> class_name
%type <node> variable_class_name
%type <node> dereferencable
%type <node> dereferencable_scalar
parse variables
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%type <node> static_member
%type <node> property_name
parse use statements
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%type <node> use_type
%type <node> group_use_declaration
%type <node> mixed_group_use_declaration
%type <node> inline_use_declarations
%type <node> unprefixed_use_declarations
%type <node> use_declarations
%type <node> inline_use_declaration
%type <node> unprefixed_use_declaration
%type <node> use_declaration
parse trait
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%type <node> trait_declaration_statement
parse interface
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%type <node> interface_declaration_statement
%type <node> interface_extends_list
parse class implements, extends
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%type <node> extends_from
%type <node> implements_list
parse calls
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%type <node> argument_list
%type <node> non_empty_argument_list
%type <node> argument
%type <node> callable_expr
%type <node> function_call
%type <node> member_name
parse new
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%type <node> anonymous_class
%type <node> new_expr
%type <node> ctor_arguments
%type <node> class_name_reference
%type <node> new_variable
parser, first try
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%%
/////////////////////////////////////////////////////////////////////////
start:
parse expressions
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top_statement_list { fmt.Println($1) }
parser, first try
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;
reserved_non_modifiers:
parse identifier value
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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 {$$=$1}
parser, first try
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;
semi_reserved:
parse identifier value
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reserved_non_modifiers {$$=$1}
| T_STATIC {$$=$1} | T_ABSTRACT {$$=$1} | T_FINAL {$$=$1} | T_PRIVATE {$$=$1} | T_PROTECTED {$$=$1} | T_PUBLIC {$$=$1}
parser, first try
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;
identifier:
parse method use stmt
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T_STRING { $$ = Node("identifier").attribute("value", $1) }
parse identifier value
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| semi_reserved { $$ = Node("identifier").attribute("value", $1) }
parser, first try
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;
parse namespace
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namespace_name:
parse use statements
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T_STRING { $$ = Node("NamespaceParts").append(Node($1)); }
| namespace_name T_NS_SEPARATOR T_STRING { $$ = $1.append(Node($3)); }
parse ns types
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;
name:
parse expressions
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namespace_name { $$ = Node("Name").append($1); }
| T_NS_SEPARATOR namespace_name { $$ = Node("Name").append($2).attribute("FullyQualified", "true"); }
| T_NAMESPACE T_NS_SEPARATOR namespace_name { $$ = Node("Name").append($3).attribute("Relative", "true"); }
parse namespace
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;
top_statement_list:
parse expressions
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top_statement_list top_statement { $$ = $1.append($2); }
| /* empty */ { $$ = Node("Statements") }
parse namespace
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;
top_statement:
parse expressions
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statement { $$ = $1 }
| function_declaration_statement { $$ = $1 }
parse class constant
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| class_declaration_statement { $$ = $1; }
parse trait
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| trait_declaration_statement { $$ = $1; }
parse interface
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| interface_declaration_statement { $$ = $1; }
parse namespace
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| T_HALT_COMPILER '(' ')' ';' { $$ = Node("THaltCompiler") }
parse expressions
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| T_NAMESPACE namespace_name ';' { $$ = Node("Namespace").append($2); }
parse namespace
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| T_NAMESPACE namespace_name '{' top_statement_list '}'
{ $$ = Node("Namespace").append($2).append($4) }
| T_NAMESPACE '{' top_statement_list '}' { $$ = Node("Namespace").append($3) }
parse use statements
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| T_USE mixed_group_use_declaration ';' { $$ = $2; }
| T_USE use_type group_use_declaration ';' { $$ = $3.append($2) }
| T_USE use_declarations ';' { $$ = $2; }
| T_USE use_type use_declarations ';' { $$ = $3.append($2) }
parse const stmt
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| T_CONST const_list ';' { $$ = $2; }
parse use statements
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;
use_type:
T_FUNCTION { $$ = Node("FuncUseType"); }
| T_CONST { $$ = Node("ConstUseType"); }
;
group_use_declaration:
namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations possible_comma '}'
{ $$ = Node("GroupUse").append($1).append($4) }
| T_NS_SEPARATOR namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations possible_comma '}'
{ $$ = Node("GroupUse").append($2).append($5) }
;
mixed_group_use_declaration:
namespace_name T_NS_SEPARATOR '{' inline_use_declarations possible_comma '}'
{ $$ = Node("MixedGroupUse").append($1).append($4); }
| T_NS_SEPARATOR namespace_name T_NS_SEPARATOR '{' inline_use_declarations possible_comma '}'
{ $$ = Node("MixedGroupUse").append($2).append($5); }
;
inline_use_declarations:
inline_use_declarations ',' inline_use_declaration
{ $$ = $1.append($3) }
| inline_use_declaration { $$ = Node("UseList").append($1) }
;
unprefixed_use_declarations:
unprefixed_use_declarations ',' unprefixed_use_declaration
{ $$ = $1.append($3) }
| unprefixed_use_declaration { $$ = Node("UseList").append($1) }
;
use_declarations:
use_declarations ',' use_declaration { $$ = $1.append($3) }
| use_declaration { $$ = Node("UseList").append($1) }
;
inline_use_declaration:
unprefixed_use_declaration { $$ = $1; }
| use_type unprefixed_use_declaration { $$ = $2.append($1) }
;
unprefixed_use_declaration:
namespace_name { $$ = Node("UseElem").append($1); }
| namespace_name T_AS T_STRING { $$ = Node("UseElem").append($1).append(Node("as").attribute("value", $3)); }
;
use_declaration:
unprefixed_use_declaration { $$ = $1; }
| T_NS_SEPARATOR unprefixed_use_declaration { $$ = $2; }
parse func declaration and class declaration
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;
inner_statement_list:
parse expressions
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inner_statement_list inner_statement { $$ = $1.append($2); }
parse Break Continue Return stmt
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| /* empty */ { $$ = Node("stmt") }
parse func declaration and class declaration
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;
inner_statement:
parse expressions
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statement { $$ = $1; }
| function_declaration_statement { $$ = $1; }
| class_declaration_statement { $$ = $1; }
parse calls
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| trait_declaration_statement { $$ = $1; }
| interface_declaration_statement { $$ = $1; }
| T_HALT_COMPILER '(' ')' ';' { $$ = Node("THaltCompiler") }
parse func declaration and class declaration
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statement:
parse expressions
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'{' inner_statement_list '}' { $$ = $2; }
parse `if` stmt
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| if_stmt { $$ = $1; }
parse AltIf stmt
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| alt_if_stmt { $$ = $1; }
parse Foreach stmt
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| T_WHILE '(' expr ')' while_statement
{
$$ = Node("While").
append(Node("expr").append($3)).
append(Node("stmt").append($5));
}
| T_DO statement T_WHILE '(' expr ')' ';'
{
$$ = Node("DoWhile").
append(Node("expr").append($5)).
append(Node("stmt").append($2));
}
parse For stmt
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| T_FOR '(' for_exprs ';' for_exprs ';' for_exprs ')' for_statement
{
$$ = Node("For").
append(Node("expr1").append($3)).
append(Node("expr2").append($5)).
append(Node("expr3").append($7)).
append(Node("stmt").append($9))
}
parse Switch stmt
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| T_SWITCH '(' expr ')' switch_case_list { $$ = Node("Switch").append(Node("expr").append($3)).append($5); }
parse Break Continue Return stmt
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| T_BREAK optional_expr ';' { $$ = Node("Break").append($2) }
| T_CONTINUE optional_expr ';' { $$ = Node("Continue").append($2) }
| T_RETURN optional_expr ';' { $$ = Node("Return").append($2) }
parse Global StaticVariables Echo stmt
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| T_GLOBAL global_var_list ';' { $$ = $2; }
| T_STATIC static_var_list ';' { $$ = $2; }
| T_ECHO echo_expr_list ';' { $$ = $2; }
parse InlineHtml
2017-11-28 22:35:21 +00:00
| T_INLINE_HTML { $$ = Node("Echo").append(Node("InlineHtml").attribute("value", $1)) }
parse expressions
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| expr ';' { $$ = $1; }
parse Unset stmt
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| T_UNSET '(' unset_variables possible_comma ')' ';'
parse Foreach stmt
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{ $$ = Node("Unset").append($3); }
| T_FOREACH '(' expr T_AS foreach_variable ')' foreach_statement
parse try catch finally stmt
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{
parse Foreach stmt
2017-11-29 10:24:08 +00:00
$$ = Node("Foreach").
append(Node("expr").append($3)).
append(Node("ForeachVariable").append($5)).
append($7);
}
| T_FOREACH '(' expr T_AS foreach_variable T_DOUBLE_ARROW foreach_variable ')' foreach_statement
parse try catch finally stmt
2017-11-29 13:49:32 +00:00
{
parse Foreach stmt
2017-11-29 10:24:08 +00:00
$$ = Node("Foreach").
append(Node("expr").append($3)).
append(Node("ForeachKey").append($5)).
append(Node("ForeachVariable").append($7)).
append($9);
}
parse Declare stmt
2017-11-29 13:33:59 +00:00
| T_DECLARE '(' const_list ')' declare_statement { $$ = Node("Declare").append($3).append($5) }
parse calls
2017-11-30 18:07:45 +00:00
| ';' /* empty statement */ { $$ = Node(""); }
parse try catch finally stmt
2017-11-29 13:49:32 +00:00
| T_TRY '{' inner_statement_list '}' catch_list finally_statement
{
$$ = Node("Try").
append($3).
append($5).
append($6);
}
parse throw goto label stmt
2017-11-29 13:53:44 +00:00
| T_THROW expr ';' { $$ = Node("Throw").append($2) }
| T_GOTO T_STRING ';' { $$ = Node("GoTo").attribute("Label", $2) }
| T_STRING ':' { $$ = Node("Label").attribute("name", $1) }
parse try catch finally stmt
2017-11-29 13:49:32 +00:00
catch_list:
/* empty */ { $$ = Node("CatchList") }
| catch_list T_CATCH '(' catch_name_list T_VARIABLE ')' '{' inner_statement_list '}'
{ $$ = $1.append($4).append(Node("Variable").attribute("name", $5)).append($8) }
;
catch_name_list:
name { $$ = Node("CatchNameList").append($1) }
| catch_name_list '|' name { $$ = $1.append($3) }
;
finally_statement:
/* empty */ { $$ = Node(""); }
| T_FINALLY '{' inner_statement_list '}' { $$ = Node("Finnaly").append($3) }
;
parse Declare stmt
2017-11-29 13:33:59 +00:00
const_list:
const_list ',' const_decl { $$ = $1.append($3) }
| const_decl { $$ = Node("ConstList").append($1) }
;
const_decl:
T_STRING '=' expr { $$ = Node("Const").attribute("name", $1).append($3) }
;
declare_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDDECLARE ';' { $$ = $2; }
;
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
parse `if` stmt
2017-11-28 19:47:12 +00:00
if_stmt_without_else:
T_IF '(' expr ')' statement
{
parse AltIf stmt
2017-11-28 19:56:09 +00:00
$$ = Node("If").append(Node("expr").append($3)).append(Node("stmt").append($5))
parse `if` stmt
2017-11-28 19:47:12 +00:00
}
| if_stmt_without_else T_ELSEIF '(' expr ')' statement
{
parse AltIf stmt
2017-11-28 19:56:09 +00:00
$$ = $1.append(Node("ElseIf").append(Node("expr").append($4)).append(Node("stmt").append($6)))
parse `if` stmt
2017-11-28 19:47:12 +00:00
}
;
parse AltIf stmt
2017-11-28 19:56:09 +00:00
parse `if` stmt
2017-11-28 19:47:12 +00:00
if_stmt:
if_stmt_without_else %prec T_NOELSE { $$ = $1; }
| if_stmt_without_else T_ELSE statement
{
parse AltIf stmt
2017-11-28 19:56:09 +00:00
$$ = $1.append(Node("Else").append(Node("stmt").append($3)))
}
;
alt_if_stmt_without_else:
T_IF '(' expr ')' ':' inner_statement_list
{
$$ = Node("AltIf").append(Node("expr").append($3)).append(Node("stmt").append($6))
}
| alt_if_stmt_without_else T_ELSEIF '(' expr ')' ':' inner_statement_list
{
$$ = $1.append(Node("AltElseIf").append(Node("expr").append($4)).append(Node("stmt").append($7)))
}
;
alt_if_stmt:
alt_if_stmt_without_else T_ENDIF ';' { $$ = $1; }
| alt_if_stmt_without_else T_ELSE ':' inner_statement_list T_ENDIF ';'
{
$$ = $1.append(Node("AltElse").append(Node("stmt").append($4)))
parse `if` stmt
2017-11-28 19:47:12 +00:00
}
;
parse While DoWhile stmt
2017-11-28 20:04:30 +00:00
while_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDWHILE ';' { $$ = $2; }
;
parse For stmt
2017-11-28 20:17:11 +00:00
for_exprs:
parse try catch finally stmt
2017-11-29 13:49:32 +00:00
/* empty */ { $$ = Node(""); }
parse For stmt
2017-11-28 20:17:11 +00:00
| non_empty_for_exprs { $$ = $1; }
;
non_empty_for_exprs:
non_empty_for_exprs ',' expr { $$ = $1.append($3) }
| expr { $$ = Node("ExpressionList").append($1) }
;
parse new
2017-11-30 18:36:10 +00:00
anonymous_class:
T_CLASS ctor_arguments extends_from implements_list '{' class_statement_list '}'
{
$$ = Node("AnonymousClass").
attribute("name", $1).
append($2).
append($3).
append($4).
append($6);
}
;
new_expr:
T_NEW class_name_reference ctor_arguments { $$ = Node("New").append($2).append($3) }
| T_NEW anonymous_class { $$ = Node("New").append($2) }
;
ctor_arguments:
/* empty */ { $$ = Node("ArgumentList") }
| argument_list { $$ = $1; }
;
parse Switch stmt
2017-11-28 20:36:21 +00:00
switch_case_list:
'{' case_list '}' { $$ = $2; }
| '{' ';' case_list '}' { $$ = $3; }
| ':' case_list T_ENDSWITCH ';' { $$ = $2; }
| ':' ';' case_list T_ENDSWITCH ';' { $$ = $3; }
;
case_list:
/* empty */ { $$ = Node("CaseList") }
| case_list T_CASE expr case_separator inner_statement_list
{
parse Break Continue Return stmt
2017-11-28 20:47:44 +00:00
$$ = $1.append(Node("Case").append(Node("expr").append($3)).append($5))
parse Switch stmt
2017-11-28 20:36:21 +00:00
}
| case_list T_DEFAULT case_separator inner_statement_list
{
parse Break Continue Return stmt
2017-11-28 20:47:44 +00:00
$$ = $1.append(Node("Default").append($4))
parse Switch stmt
2017-11-28 20:36:21 +00:00
}
;
case_separator:
':'
| ';'
;
parse For stmt
2017-11-28 20:17:11 +00:00
for_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDFOR ';' { $$ = $2; }
;
parse While DoWhile stmt
2017-11-28 20:04:30 +00:00
parse Foreach stmt
2017-11-29 10:24:08 +00:00
foreach_variable:
variable { $$ = $1; }
| '&' variable { $$ = Node("Ref").append($2); }
| T_LIST '(' array_pair_list ')' { $$ = Node("List").append($3) }
| '[' array_pair_list ']' { $$ = Node("ShortList").append($2) }
;
array_pair_list:
non_empty_array_pair_list { /* TODO: allow single trailing comma */ $$ = $1 }
;
possible_array_pair:
parse try catch finally stmt
2017-11-29 13:49:32 +00:00
/* empty */ { $$ = Node(""); }
parse Foreach stmt
2017-11-29 10:24:08 +00:00
| array_pair { $$ = $1; }
;
non_empty_array_pair_list:
non_empty_array_pair_list ',' possible_array_pair
{ $$ = $1.append($3) }
| possible_array_pair { $$ = Node("ArrayPairList").append($1) }
;
array_pair:
expr T_DOUBLE_ARROW expr { $$ = Node("ArrayElement").append($1).append($3) }
| expr { $$ = Node("ArrayElement").append($1) }
| expr T_DOUBLE_ARROW '&' variable { $$ = Node("ArrayElement").append($1).append(Node("Ref").append($4)) }
| '&' variable { $$ = Node("ArrayElement").append(Node("Ref").append($2)) }
| expr T_DOUBLE_ARROW T_LIST '(' array_pair_list ')'
{
$$ = Node("ArrayElement").
append($1).
append(Node("ArrayList").append($5))
}
| T_LIST '(' array_pair_list ')'
{
$$ = Node("ArrayElement").
append(Node("ArrayList").append($3))
}
;
foreach_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDFOREACH ';' { $$ = $2; }
;
parse Global StaticVariables Echo stmt
2017-11-28 21:20:08 +00:00
global_var_list:
global_var_list ',' global_var { $$ = $1.append($3); }
| global_var { $$ = Node("GlobalVarList").append($1); }
;
global_var:
simple_variable { $$ = $1 }
;
static_var_list:
static_var_list ',' static_var { $$ = $1.append($3); }
| static_var { $$ = Node("StaticVarList").append($1); }
;
static_var:
T_VARIABLE { $$ = Node("StaticVariable").attribute("Name", $1); }
| T_VARIABLE '=' expr { $$ = Node("StaticVariable").attribute("Name", $1).append(Node("expr").append($3)); }
;
echo_expr_list:
echo_expr_list ',' echo_expr { $$ = $1.append($3) }
| echo_expr { $$ = Node("EchoList").append($1) }
;
echo_expr:
expr { $$ = Node("Echo").append($1) }
;
parse Unset stmt
2017-11-29 09:37:16 +00:00
unset_variables:
unset_variable { $$ = Node("UnsetVariablesList").append($1) }
| unset_variables ',' unset_variable { $$ = $1.append($3) }
;
unset_variable:
variable { $$ = $1 }
;
possible_comma:
/* empty */
| ','
;
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
class_declaration_statement:
parse class implements, extends
2017-11-30 17:35:13 +00:00
class_modifiers T_CLASS T_STRING extends_from implements_list '{' class_statement_list '}'
{
$$ = Node("Class").
attribute("name", $3).
append($1).
append(Node("Extends").append($4)).
append(Node("Implements").append($5)).
append($7);
}
| T_CLASS T_STRING extends_from implements_list '{' class_statement_list '}'
{
$$ = Node("Class").
attribute("name", $2).
append(Node("Extends").append($3)).
append(Node("Implements").append($4)).
append($6);
}
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
parse class properties
2017-11-29 14:21:44 +00:00
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
class_modifiers:
parse expressions
2017-11-28 16:00:27 +00:00
class_modifier { $$ = Node("Class").attribute($1, "true") }
| class_modifiers class_modifier { $$ = $1.attribute($2, "true") }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
class_modifier:
parse expressions
2017-11-28 16:00:27 +00:00
T_ABSTRACT { $$ = "abstract" }
| T_FINAL { $$ = "final" }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
parse trait
2017-11-30 17:16:01 +00:00
trait_declaration_statement:
T_TRAIT T_STRING '{' class_statement_list '}' { $$ = Node("Trait").attribute("name", $2).append($4) }
;
parse interface
2017-11-30 17:23:46 +00:00
interface_declaration_statement:
T_INTERFACE T_STRING interface_extends_list '{' class_statement_list '}'
{
$$ = Node("Interface").
attribute("name", $2).
append(Node("Extends").append($3)).
append($5);
}
;
parse class implements, extends
2017-11-30 17:35:13 +00:00
extends_from:
/* empty */ { $$ = Node(""); }
| T_EXTENDS name { $$ = $2; }
;
parse interface
2017-11-30 17:23:46 +00:00
interface_extends_list:
/* empty */ { $$ = Node("") }
| T_EXTENDS name_list { $$ = $2; }
;
parse class implements, extends
2017-11-30 17:35:13 +00:00
implements_list:
/* empty */ { $$ = Node(""); }
| T_IMPLEMENTS name_list { $$ = $2; }
;
parse class properties
2017-11-29 14:21:44 +00:00
class_statement_list:
class_statement_list class_statement { $$ = $1.append($2) }
| /* empty */ { $$ = Node("Stmt") }
;
class_statement:
variable_modifiers property_list ';' { $$ = $2.append($1) }
parse class constant
2017-11-29 20:56:37 +00:00
| method_modifiers T_CONST class_const_list ';' { $$ = $3.append($1); }
parse method use stmt
2017-11-29 21:43:39 +00:00
| T_USE name_list trait_adaptations { $$ = Node("Use").append($2).append($3); }
parse class method
2017-11-29 22:07:15 +00:00
| method_modifiers T_FUNCTION returns_ref identifier '(' parameter_list ')'
return_type method_body
{
$$ = Node("Function").
append($1).
append(Node("name").append($4)).
attribute("returns_ref", $3).
append($6).
append($8).
append($9);
}
parse class properties
2017-11-29 14:21:44 +00:00
;
parse method use stmt
2017-11-29 21:43:39 +00:00
name_list:
name { $$ = Node("NameList").append($1) }
| name_list ',' name { $$ = $1.append($3) }
;
trait_adaptations:
';' { $$ = Node(""); }
| '{' '}' { $$ = Node(""); }
| '{' trait_adaptation_list '}' { $$ = $2; }
;
trait_adaptation_list:
trait_adaptation { $$ = Node("TraitAdaptionList").append($1) }
| trait_adaptation_list trait_adaptation { $$ = $1.append($2) }
;
trait_adaptation:
trait_precedence ';' { $$ = $1; }
| trait_alias ';' { $$ = $1; }
;
trait_precedence:
absolute_trait_method_reference T_INSTEADOF name_list
{ $$ = Node("TraitPrecedence").append($1).append($3) }
;
trait_alias:
trait_method_reference T_AS T_STRING { $$ = $1.append(Node("as").attribute("value", $3)); }
| trait_method_reference T_AS reserved_non_modifiers
{ $$ = $1.append(Node("as").append(Node("reservedNonModifiers"))); }
| trait_method_reference T_AS member_modifier identifier
{ $$ = $1.append($3).append($4); }
| trait_method_reference T_AS member_modifier { $$ = $1.append($3); }
;
trait_method_reference:
identifier { $$ = Node("TraitMethodRef").append($1); }
| absolute_trait_method_reference { $$ = $1; }
;
absolute_trait_method_reference:
name T_PAAMAYIM_NEKUDOTAYIM identifier { $$ = Node("TraitMethodRef").append($1).append($3) }
parse class method
2017-11-29 22:07:15 +00:00
;
method_body:
';' /* abstract method */ { $$ = Node(""); }
| '{' inner_statement_list '}' { $$ = $2; }
;
parse method use stmt
2017-11-29 21:43:39 +00:00
parse class properties
2017-11-29 14:21:44 +00:00
variable_modifiers:
non_empty_member_modifiers { $$ = $1; }
| T_VAR { $$ = Node("VarMemberModifier") }
;
parse class constant
2017-11-29 20:56:37 +00:00
class_const_list:
class_const_list ',' class_const_decl { $$ = $1.append($3) }
| class_const_decl { $$ = Node("ConstList").append($1) }
;
class_const_decl:
identifier '=' expr { $$ = Node("Const").append($3) }
;
method_modifiers:
/* empty */ { $$ = Node("PublicMemberModifier"); }
| non_empty_member_modifiers { $$ = $1; }
parse class properties
2017-11-29 14:21:44 +00:00
non_empty_member_modifiers:
member_modifier { $$ = $1; }
| non_empty_member_modifiers member_modifier { $$ = $1.append($2) }
;
member_modifier:
T_PUBLIC { $$ = Node("PublicMemberModifier"); }
| T_PROTECTED { $$ = Node("ProtectedMemberModifier"); }
| T_PRIVATE { $$ = Node("PrivateMemberModifier"); }
| T_STATIC { $$ = Node("StaticMemberModifier"); }
| T_ABSTRACT { $$ = Node("AbstractMemberModifier"); }
| T_FINAL { $$ = Node("FinalMemberModifier"); }
;
property_list:
property_list ',' property { $$ = $1.append($3) }
| property { $$ = Node("PropertyList").append($1) }
;
property:
T_VARIABLE { $$ = Node("Property").attribute("name", $1) }
| T_VARIABLE '=' expr { $$ = Node("Property").attribute("name", $1).append(Node("Default").append($3)) }
;
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
function_declaration_statement:
T_FUNCTION returns_ref T_STRING '(' parameter_list ')' return_type '{' inner_statement_list '}'
{
$$ = Node("Function").
parse `if` stmt
2017-11-28 19:47:12 +00:00
attribute("name", $3).
attribute("returns_ref", $2).
append($5).
append($7).
append($9);
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
}
;
parameter_list:
parse expressions
2017-11-28 16:00:27 +00:00
non_empty_parameter_list { $$ = $1; }
| /* empty */ { $$ = Node("Parameter list"); }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
non_empty_parameter_list:
parse expressions
2017-11-28 16:00:27 +00:00
parameter { $$ = Node("Parameter list").append($1) }
| non_empty_parameter_list ',' parameter { $$ = $1.append($3); }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
parameter:
parse expressions
2017-11-28 16:00:27 +00:00
optional_type is_reference is_variadic T_VARIABLE
{
$$ = Node("Parameter").
append($1).
attribute("is_reference", $2).
attribute("is_variadic", $3).
attribute("var", $4);
}
| optional_type is_reference is_variadic T_VARIABLE '=' expr
{
$$ = Node("Parameter").
append($1).
attribute("is_reference", $2).
attribute("is_variadic", $3).
attribute("var", $4).
append($6);
}
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
optional_type:
parse expressions
2017-11-28 16:00:27 +00:00
/* empty */ { $$ = Node("No type") }
| type_expr { $$ = $1; }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
returns_ref:
parse expressions
2017-11-28 16:00:27 +00:00
/* empty */ { $$ = "false"; }
| '&' { $$ = "true"; }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
is_reference:
parse expressions
2017-11-28 16:00:27 +00:00
/* empty */ { $$ = "false"; }
| '&' { $$ = "true"; }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
is_variadic:
parse expressions
2017-11-28 16:00:27 +00:00
/* empty */ { $$ = "false"; }
| T_ELLIPSIS { $$ = "true"; }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
type_expr:
parse expressions
2017-11-28 16:00:27 +00:00
type { $$ = $1; }
| '?' type { $$ = $2; $$.attribute("nullable", "true") }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
type:
parse expressions
2017-11-28 16:00:27 +00:00
name { $$ = $1; }
| T_ARRAY { $$ = Node("array type"); }
| T_CALLABLE { $$ = Node("callable type"); }
parse func declaration and class declaration
2017-11-27 22:37:17 +00:00
;
return_type:
parse interface
2017-11-30 17:23:46 +00:00
/* empty */ { $$ = Node("No return type"); }
parse expressions
2017-11-28 16:00:27 +00:00
| ':' type_expr { $$ = $2; }
;
expr_without_variable:
variable '=' expr { $$ = Node("Assign").append($1).append($3); }
| variable '=' '&' expr { $$ = Node("AssignRef").append($1).append($4); }
| T_CLONE expr { $$ = Node("Clone").append($2); }
| variable T_PLUS_EQUAL expr { $$ = Node("AssignAdd").append($1).append($3); }
| variable T_MINUS_EQUAL expr { $$ = Node("AssignSub").append($1).append($3); }
| variable T_MUL_EQUAL expr { $$ = Node("AssignMul").append($1).append($3); }
| variable T_POW_EQUAL expr { $$ = Node("AssignPow").append($1).append($3); }
| variable T_DIV_EQUAL expr { $$ = Node("AssignDiv").append($1).append($3); }
| variable T_CONCAT_EQUAL expr { $$ = Node("AssignConcat").append($1).append($3); }
| variable T_MOD_EQUAL expr { $$ = Node("AssignMod").append($1).append($3); }
| variable T_AND_EQUAL expr { $$ = Node("AssignAnd").append($1).append($3); }
| variable T_OR_EQUAL expr { $$ = Node("AssignOr").append($1).append($3); }
| variable T_XOR_EQUAL expr { $$ = Node("AssignXor").append($1).append($3); }
| variable T_SL_EQUAL expr { $$ = Node("AssignShiftLeft").append($1).append($3); }
| variable T_SR_EQUAL expr { $$ = Node("AssignShiftRight").append($1).append($3); }
| variable T_INC { $$ = Node("PostIncrement").append($1) }
| T_INC variable { $$ = Node("PreIncrement").append($2) }
| variable T_DEC { $$ = Node("PostDecrement").append($1) }
| T_DEC variable { $$ = Node("PreDecrement").append($2) }
| expr T_BOOLEAN_OR expr { $$ = Node("Or").append($1).append($3) }
| expr T_BOOLEAN_AND expr { $$ = Node("And").append($1).append($3) }
| expr T_LOGICAL_OR expr { $$ = Node("Or").append($1).append($3) }
| expr T_LOGICAL_AND expr { $$ = Node("And").append($1).append($3) }
| expr T_LOGICAL_XOR expr { $$ = Node("Xor").append($1).append($3) }
| expr '|' expr { $$ = Node("BitwiseOr").append($1).append($3) }
| expr '&' expr { $$ = Node("BitwiseAnd").append($1).append($3) }
| expr '^' expr { $$ = Node("BitwiseXor").append($1).append($3) }
| expr '.' expr { $$ = Node("Concat").append($1).append($3) }
| expr '+' expr { $$ = Node("Add").append($1).append($3) }
| expr '-' expr { $$ = Node("Sub").append($1).append($3) }
| expr '*' expr { $$ = Node("Mul").append($1).append($3) }
| expr T_POW expr { $$ = Node("Pow").append($1).append($3) }
| expr '/' expr { $$ = Node("Div").append($1).append($3) }
| expr '%' expr { $$ = Node("Mod").append($1).append($3) }
| expr T_SL expr { $$ = Node("ShiftLeft").append($1).append($3) }
| expr T_SR expr { $$ = Node("ShiftRight").append($1).append($3) }
| '+' expr %prec T_INC { $$ = Node("UnaryPlus").append($2) }
| '-' expr %prec T_INC { $$ = Node("UnaryMinus").append($2) }
| '!' expr { $$ = Node("BooleanNot").append($2) }
| '~' expr { $$ = Node("BitwiseNot").append($2) }
| expr T_IS_IDENTICAL expr { $$ = Node("Identical").append($1).append($3) }
| expr T_IS_NOT_IDENTICAL expr { $$ = Node("NotIdentical").append($1).append($3) }
| expr T_IS_EQUAL expr { $$ = Node("Equal").append($1).append($3) }
| expr T_IS_NOT_EQUAL expr { $$ = Node("NotEqual").append($1).append($3) }
parse new
2017-11-30 18:36:10 +00:00
| expr T_SPACESHIP expr { $$ = Node("Spaceship").append($1).append($3); }
parse expressions
2017-11-28 16:00:27 +00:00
| expr '<' expr { $$ = Node("Smaller").append($1).append($3) }
| expr T_IS_SMALLER_OR_EQUAL expr { $$ = Node("SmallerOrEqual").append($1).append($3) }
| expr '>' expr { $$ = Node("Greater").append($1).append($3) }
| expr T_IS_GREATER_OR_EQUAL expr { $$ = Node("GreaterOrEqual").append($1).append($3) }
parse new
2017-11-30 18:36:10 +00:00
| expr T_INSTANCEOF class_name_reference { $$ = Node("InstanceOf").append($1).append($3) }
parse expressions
2017-11-28 16:00:27 +00:00
| '(' expr ')' { $$ = $2; }
parse new
2017-11-30 18:36:10 +00:00
| new_expr { $$ = $1; }
parse expressions
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| expr '?' expr ':' expr { $$ = Node("Ternary").append($1).append($3).append($5); }
| expr '?' ':' expr { $$ = Node("Ternary").append($1).append($4); }
| expr T_COALESCE expr { $$ = Node("Coalesce").append($1).append($3); }
| T_EMPTY '(' expr ')' { $$ = Node("Empty").append($3); }
| T_INCLUDE expr { $$ = Node("Include").append($2); }
| T_INCLUDE_ONCE expr { $$ = Node("IncludeOnce").append($2); }
| T_EVAL '(' expr ')' { $$ = Node("Eval").append($3); }
| T_REQUIRE expr { $$ = Node("Require").append($2); }
| T_REQUIRE_ONCE expr { $$ = Node("RequireOnce").append($2); }
| T_INT_CAST expr { $$ = Node("CastInt").append($2); }
| T_DOUBLE_CAST expr { $$ = Node("CastDouble").append($2); }
| T_STRING_CAST expr { $$ = Node("CastString").append($2); }
| T_ARRAY_CAST expr { $$ = Node("CastArray").append($2); }
| T_OBJECT_CAST expr { $$ = Node("CastObject").append($2); }
| T_BOOL_CAST expr { $$ = Node("CastBool").append($2); }
| T_UNSET_CAST expr { $$ = Node("CastUnset").append($2); }
| '@' expr { $$ = Node("Silence").append($2); }
parse constant and string
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| scalar { $$ = $1; }
parse expressions
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| T_PRINT expr { $$ = Node("Print").append($2); }
| T_YIELD { $$ = Node("Yield"); }
| T_YIELD expr { $$ = Node("Yield").append($2); }
| T_YIELD expr T_DOUBLE_ARROW expr { $$ = Node("Yield").append($2).append($4); }
| T_YIELD_FROM expr { $$ = Node("YieldFrom").append($2); }
;
parse constant and string
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scalar:
T_LNUMBER { $$ = Node("Scalar").append(Node("Lnumber").attribute("value", $1)) }
| T_DNUMBER { $$ = Node("Scalar").append(Node("Dnumber").attribute("value", $1)) }
| T_LINE { $$ = Node("Scalar").append(Node("__LINE__")) }
| T_FILE { $$ = Node("Scalar").append(Node("__FILE__")) }
| T_DIR { $$ = Node("Scalar").append(Node("__DIR__")) }
| T_TRAIT_C { $$ = Node("Scalar").append(Node("__TRAIT__")) }
| T_METHOD_C { $$ = Node("Scalar").append(Node("__METHOD__")); }
| T_FUNC_C { $$ = Node("Scalar").append(Node("__FUNCTION__")); }
| T_NS_C { $$ = Node("Scalar").append(Node("__NAMESPACE__")); }
| T_CLASS_C { $$ = Node("Scalar").append(Node("__CLASS__")); }
| T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC
{ $$ = Node("Scalar").append(Node("Heredoc").attribute("value", $2)) }
| T_START_HEREDOC T_END_HEREDOC
{ $$ = Node("Scalar").append(Node("Heredoc")) }
| '"' encaps_list '"' { $$ = $2; }
| T_START_HEREDOC encaps_list T_END_HEREDOC { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
| constant { $$ = $1; }
;
encaps_list:
encaps_list encaps_var { $$ = $1.append($2) }
| encaps_list T_ENCAPSED_AND_WHITESPACE { $$ = $1.append(Node("String").attribute("value", $2)) }
| encaps_var { $$ = Node("EncapsList").append($1) }
| T_ENCAPSED_AND_WHITESPACE encaps_var { $$ = Node("EncapsList").append(Node("String").attribute("value", $1)).append($2) }
;
encaps_var:
T_VARIABLE { $$ = Node("Variable").attribute("value", $1) }
| T_VARIABLE '[' encaps_var_offset ']' { $$ = Node("Variable").attribute("value", $1).append(Node("offset").append($3)) }
| T_VARIABLE T_OBJECT_OPERATOR T_STRING { $$ = Node("Variable").attribute("value", $1).append(Node("property").attribute("value", $3)) }
| T_DOLLAR_OPEN_CURLY_BRACES expr '}' { $$ = Node("Variable").append(Node("expr").append($2)) }
| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}' { $$ = Node("Variable").attribute("value", $2) }
| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '[' expr ']' '}'
{ $$ = Node("Variable").attribute("value", $2).append(Node("offset").append($4)) }
| T_CURLY_OPEN variable '}' { $$ = $2; }
;
encaps_var_offset:
T_STRING { $$ = Node("OffsetString").attribute("value", $1) }
| T_NUM_STRING { $$ = Node("OffsetNumString").attribute("value", $1) }
| '-' T_NUM_STRING { $$ = Node("OffsetNegateNumString").attribute("value", $2) }
| T_VARIABLE { $$ = Node("OffsetVariable").attribute("value", $1) }
;
constant:
name { $$ = Node("Const").append($1) }
| class_name T_PAAMAYIM_NEKUDOTAYIM identifier { $$ = Node("Const").append($1).append($3) }
| variable_class_name T_PAAMAYIM_NEKUDOTAYIM identifier
{ $$ = Node("Const").append($1).append($3) }
;
class_name:
T_STATIC { $$ = Node("Static") }
| name { $$ = $1; }
;
parse new
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class_name_reference:
class_name { $$ = $1; }
| new_variable { $$ = $1; }
;
parse constant and string
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variable_class_name:
dereferencable { $$ = $1; }
;
dereferencable:
variable { $$ = $1; }
| '(' expr ')' { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
;
parse calls
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callable_expr:
callable_variable { $$ = $1; }
| '(' expr ')' { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
;
parse constant and string
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dereferencable_scalar:
T_ARRAY '(' array_pair_list ')' { $$ = $3; }
| '[' array_pair_list ']' { $$ = $2; }
| T_CONSTANT_ENCAPSED_STRING { $$ = Node("String").attribute("value", $1) }
;
parse expressions
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expr:
variable { $$ = $1; }
| expr_without_variable { $$ = $1; }
;
parse Break Continue Return stmt
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optional_expr:
parse try catch finally stmt
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/* empty */ { $$ = Node("") }
parse Break Continue Return stmt
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| expr { $$ = $1; }
;
parse expressions
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callable_variable:
simple_variable { $$ = $1; }
parse calls
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| dereferencable '[' optional_expr ']' { $$ = Node("Dim").append($1).append($3)}
| constant '[' optional_expr ']' { $$ = Node("Dim").append($1).append($3)}
| dereferencable '{' expr '}' { $$ = Node("Dim").append($1).append($3)}
| dereferencable T_OBJECT_OPERATOR property_name argument_list
{ $$ = Node("MethodCall").append($1).append($3).append($4)}
| function_call { $$ = $1; }
;
function_call:
name argument_list { $$ = Node("FunctionCall").append($1).append($2) }
| class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$ = Node("StaticCall").append($1).append($3).append($4) }
| variable_class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$ = Node("StaticCall").append($1).append($3).append($4) }
| callable_expr argument_list { $$ = Node("Call").append($1).append($2); }
;
member_name:
identifier { $$ = $1; }
| '{' expr '}' { $$ = $2; }
| simple_variable { $$ = $1 }
;
argument_list:
'(' ')' { $$ = Node("ArgumentList") }
| '(' non_empty_argument_list possible_comma ')' { $$ = $2; }
;
non_empty_argument_list:
argument { $$ = Node("ArgumentList").append($1) }
| non_empty_argument_list ',' argument { $$ = $1.append($3) }
;
argument:
expr { $$ = $1; }
| T_ELLIPSIS expr { $$ = Node("Unpack").append($2) }
parse expressions
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;
variable:
parse variables
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callable_variable { $$ = $1; }
| static_member { $$ = $1; }
| dereferencable T_OBJECT_OPERATOR property_name { $$ = Node("Property").append($1).append($3) }
;
property_name:
T_STRING { $$ = Node("PropertyName").attribute("value", $1) }
| '{' expr '}' { $$ = $2; }
| simple_variable { $$ = $1 }
parse expressions
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;
simple_variable:
T_VARIABLE { $$ = Node("Variable").attribute("name", $1); }
parse constant and string
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| '$' '{' expr '}' { $$ = Node("Variable").append($3); }
parse expressions
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| '$' simple_variable { $$ = Node("Variable").append($2); }
parse namespace
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;
parse variables
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static_member:
class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = Node("StaticProp").append($1).append($3) }
| variable_class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = Node("StaticProp").append($1).append($3) }
;
parse new
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new_variable:
simple_variable { $$ = $1 }
| new_variable '[' optional_expr ']' { $$ = Node("Dim").append($1).append($3) }
| new_variable '{' expr '}' { $$ = Node("Dim").append($1).append($3) }
| new_variable T_OBJECT_OPERATOR property_name { $$ = Node("Property").append($1).append($3) }
| class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = Node("StaticProperty").append($1).append($3) }
| new_variable T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = Node("StaticProperty").append($1).append($3) }
;
parse variables
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parser, first try
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/////////////////////////////////////////////////////////////////////////
%%
parse Foreach stmt
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const src = `<?php
parse new
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$a instanceof \Test;
new $Test[]();
parser, first try
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`
func main() {
yyDebug = 0
yyErrorVerbose = true
l := newLexer(bytes.NewBufferString(src), os.Stdout, "file.name")
yyParse(l)
}
Reference in New Issue Copy Permalink