;;; java-tags.wy -- Semantic LALR grammar for Java

;; Copyright (C) 2002-2019 Free Software Foundation, Inc.
;;
;; Author: David Ponce <david@dponce.com>
;; Created: 26 Aug 2002
;; Keywords: syntax

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

%package wisent-java-tags-wy
%provide semantic/wisent/javat-wy

%{
(declare-function semantic-parse-region "semantic"
		  (start end &optional nonterminal depth returnonerror))
}

%languagemode  java-mode

;; The default start symbol
%start compilation_unit
;; Alternate entry points
;;    - Needed by partial re-parse
%start package_declaration
%start import_declaration
%start class_declaration
%start field_declaration
%start method_declaration
%start formal_parameter
%start constructor_declaration
%start interface_declaration
;;    - Needed by EXPANDFULL clauses
%start class_member_declaration
%start interface_member_declaration
%start formal_parameters

;; -----------------------------
;; Block & Parenthesis terminals
;; -----------------------------
%type  <block>       ;;syntax "\\s(\\|\\s)" matchdatatype block

%token <block>       PAREN_BLOCK "(LPAREN RPAREN)"
%token <block>       BRACE_BLOCK "(LBRACE RBRACE)"
%token <block>       BRACK_BLOCK "(LBRACK RBRACK)"

%token <open-paren>  LPAREN      "("
%token <close-paren> RPAREN      ")"
%token <open-paren>  LBRACE      "{"
%token <close-paren> RBRACE      "}"
%token <open-paren>  LBRACK      "["
%token <close-paren> RBRACK      "]"

;; ------------------
;; Operator terminals
;; ------------------
%type  <punctuation> ;;syntax "\\(\\s.\\|\\s$\\|\\s'\\)+" matchdatatype string

%token <punctuation> NOT         "!"
%token <punctuation> NOTEQ       "!="
%token <punctuation> MOD         "%"
%token <punctuation> MODEQ       "%="
%token <punctuation> AND         "&"
%token <punctuation> ANDAND      "&&"
%token <punctuation> ANDEQ       "&="
%token <punctuation> MULT        "*"
%token <punctuation> MULTEQ      "*="
%token <punctuation> PLUS        "+"
%token <punctuation> PLUSPLUS    "++"
%token <punctuation> PLUSEQ      "+="
%token <punctuation> COMMA       ","
%token <punctuation> MINUS       "-"
%token <punctuation> MINUSMINUS  "--"
%token <punctuation> MINUSEQ     "-="
%token <punctuation> DOT         "."
%token <punctuation> DIV         "/"
%token <punctuation> DIVEQ       "/="
%token <punctuation> COLON       ":"
%token <punctuation> SEMICOLON   ";"
%token <punctuation> LT          "<"
%token <punctuation> LSHIFT      "<<"
%token <punctuation> LSHIFTEQ    "<<="
%token <punctuation> LTEQ        "<="
%token <punctuation> EQ          "="
%token <punctuation> EQEQ        "=="
%token <punctuation> GT          ">"
%token <punctuation> GTEQ        ">="
%token <punctuation> RSHIFT      ">>"
%token <punctuation> RSHIFTEQ    ">>="
%token <punctuation> URSHIFT     ">>>"
%token <punctuation> URSHIFTEQ   ">>>="
%token <punctuation> QUESTION    "?"
%token <punctuation> XOR         "^"
%token <punctuation> XOREQ       "^="
%token <punctuation> OR          "|"
%token <punctuation> OREQ        "|="
%token <punctuation> OROR        "||"
%token <punctuation> COMP        "~"

;; -----------------
;; Literal terminals
;; -----------------
%type  <symbol>      ;;syntax "\\(\\sw\\|\\s_\\)+"
%token <symbol>      IDENTIFIER

%type  <string>      ;;syntax "\\s\"" matchdatatype sexp
%token <string>      STRING_LITERAL

%type  <number>      ;;syntax semantic-lex-number-expression
%token <number>      NUMBER_LITERAL

%type <unicode>      syntax "\\\\u[0-9a-f][0-9a-f][0-9a-f][0-9a-f]"
%token <unicode>     unicodecharacter

;; -----------------
;; Keyword terminals
;; -----------------

;; Generate a keyword analyzer
%type  <keyword> ;;syntax "\\(\\sw\\|\\s_\\)+" matchdatatype keyword

%keyword ABSTRACT     "abstract"
%put     ABSTRACT summary
"Class|Method declaration modifier: abstract {class|<type>} <name> ..."

%keyword BOOLEAN      "boolean"
%put     BOOLEAN summary
"Primitive logical quantity type (true or false)"

%keyword BREAK        "break"
%put     BREAK summary
"break [<label>] ;"

%keyword BYTE         "byte"
%put     BYTE summary
"Integral primitive type (-128 to 127)"

%keyword CASE         "case"
%put     CASE summary
"switch(<expr>) {case <const-expr>: <stmts> ... }"

%keyword CATCH        "catch"
%put     CATCH summary
"try {<stmts>} catch(<parm>) {<stmts>} ... "

%keyword CHAR         "char"
%put     CHAR summary
"Integral primitive type (0 to 65535)"

%keyword CLASS        "class"
%put     CLASS summary
"Class declaration: class <name>"

%keyword CONST        "const"
%put     CONST summary
"Unused reserved word"

%keyword CONTINUE     "continue"
%put     CONTINUE summary
"continue [<label>] ;"

%keyword DEFAULT      "default"
%put     DEFAULT summary
"switch(<expr>) { ... default: <stmts>}"

%keyword DO           "do"
%put     DO summary
"do <stmt> while (<expr>);"

%keyword DOUBLE       "double"
%put     DOUBLE summary
"Primitive floating-point type (double-precision 64-bit IEEE 754)"

%keyword ELSE         "else"
%put     ELSE summary
"if (<expr>) <stmt> else <stmt>"

%keyword EXTENDS      "extends"
%put     EXTENDS summary
"SuperClass|SuperInterfaces declaration: extends <name> [, ...]"

%keyword FINAL        "final"
%put     FINAL summary
"Class|Member declaration modifier: final {class|<type>} <name> ..."

%keyword FINALLY      "finally"
%put     FINALLY summary
"try {<stmts>} ... finally {<stmts>}"

%keyword FLOAT        "float"
%put     FLOAT summary
"Primitive floating-point type (single-precision 32-bit IEEE 754)"

%keyword FOR          "for"
%put     FOR summary
"for ([<init-expr>]; [<expr>]; [<update-expr>]) <stmt>"

%keyword GOTO         "goto"
%put     GOTO summary
"Unused reserved word"

%keyword IF           "if"
%put     IF summary
"if (<expr>) <stmt> [else <stmt>]"

%keyword IMPLEMENTS   "implements"
%put     IMPLEMENTS summary
"Class SuperInterfaces declaration: implements <name> [, ...]"

%keyword IMPORT       "import"
%put     IMPORT summary
"Import package declarations: import <package>"

%keyword INSTANCEOF   "instanceof"

%keyword INT          "int"
%put     INT summary
"Integral primitive type (-2147483648 to 2147483647)"

%keyword INTERFACE    "interface"
%put     INTERFACE summary
"Interface declaration: interface <name>"

%keyword LONG         "long"
%put     LONG summary
"Integral primitive type (-9223372036854775808 to 9223372036854775807)"

%keyword NATIVE       "native"
%put     NATIVE summary
"Method declaration modifier: native <type> <name> ..."

%keyword NEW          "new"

%keyword PACKAGE      "package"
%put     PACKAGE summary
"Package declaration: package <name>"

%keyword PRIVATE      "private"
%put     PRIVATE summary
"Access level modifier: private {class|interface|<type>} <name> ..."

%keyword PROTECTED    "protected"
%put     PROTECTED summary
"Access level modifier: protected {class|interface|<type>} <name> ..."

%keyword PUBLIC       "public"
%put     PUBLIC summary
"Access level modifier: public {class|interface|<type>} <name> ..."

%keyword RETURN       "return"
%put     RETURN summary
"return [<expr>] ;"

%keyword SHORT        "short"
%put     SHORT summary
"Integral primitive type (-32768 to 32767)"

%keyword STATIC       "static"
%put     STATIC summary
"Declaration modifier: static {class|interface|<type>} <name> ..."

%keyword STRICTFP     "strictfp"
%put     STRICTFP summary
"Declaration modifier: strictfp {class|interface|<type>} <name> ..."

%keyword SUPER        "super"

%keyword SWITCH       "switch"
%put     SWITCH summary
"switch(<expr>) {[case <const-expr>: <stmts> ...] [default: <stmts>]}"


%keyword SYNCHRONIZED "synchronized"
%put     SYNCHRONIZED summary
"synchronized (<expr>) ... | Method decl. modifier: synchronized <type> <name> ..."

%keyword THIS         "this"

%keyword THROW        "throw"
%put     THROW summary
"throw <expr> ;"

%keyword THROWS       "throws"
%put     THROWS summary
"Method|Constructor declaration: throws <classType>, ..."

%keyword TRANSIENT    "transient"
%put     TRANSIENT summary
"Field declaration modifier: transient <type> <name> ..."

%keyword TRY          "try"
%put     TRY summary
"try {<stmts>} [catch(<parm>) {<stmts>} ...] [finally {<stmts>}]"

%keyword VOID         "void"
%put     VOID summary
"Method return type: void <name> ..."

%keyword VOLATILE     "volatile"
%put     VOLATILE summary
"Field declaration modifier: volatile <type> <name> ..."

%keyword WHILE        "while"
%put     WHILE summary
"while (<expr>) <stmt> | do <stmt> while (<expr>);"

;; --------------------------
;; Official javadoc line tags
;; --------------------------

;; Javadoc tags are identified by a 'javadoc' keyword property.  The
;; value of this property must be itself a property list where the
;; following properties are recognized:
;;
;; - `seq' (mandatory) is the tag sequence number used to check if tags
;;   are correctly ordered in a javadoc comment block.
;;
;; - `usage' (mandatory) is the list of token categories for which this
;;   documentation tag is allowed.
;;
;; - `opt' (optional) if non-nil indicates this is an optional tag.
;;   By default tags are mandatory.
;;
;; - `with-name' (optional) if non-nil indicates that this tag is
;;   followed by an identifier like in "@param <var-name> description"
;;   or "@exception <class-name> description".
;;
;; - `with-ref' (optional) if non-nil indicates that the tag is
;;   followed by a reference like in "@see <reference>".

%keyword _AUTHOR      "@author"
%put     _AUTHOR      javadoc (seq 1 usage (type))
%keyword _VERSION     "@version"
%put     _VERSION     javadoc (seq 2 usage (type))
%keyword _PARAM       "@param"
%put     _PARAM       javadoc (seq 3 usage (function) with-name t)
%keyword _RETURN      "@return"
%put     _RETURN      javadoc (seq 4 usage (function))
%keyword _EXCEPTION   "@exception"
%put     _EXCEPTION   javadoc (seq 5 usage (function) with-name t)
%keyword _THROWS      "@throws"
%put     _THROWS      javadoc (seq 6 usage (function) with-name t)
%keyword _SEE         "@see"
%put     _SEE         javadoc (seq 7 usage (type function variable) opt t with-ref t)
%keyword _SINCE       "@since"
%put     _SINCE       javadoc (seq 8 usage (type function variable) opt t)
%keyword _SERIAL      "@serial"
%put     _SERIAL      javadoc (seq 9 usage (variable) opt t)
%keyword _SERIALDATA  "@serialData"
%put     _SERIALDATA  javadoc (seq 10 usage (function) opt t)
%keyword _SERIALFIELD "@serialField"
%put     _SERIALFIELD javadoc (seq 11 usage (variable) opt t)
%keyword _DEPRECATED  "@deprecated"
%put     _DEPRECATED  javadoc (seq 12 usage (type function variable) opt t)

%%

;; ------------
;; LALR Grammar
;; ------------

;; This grammar is not designed to fully parse correct Java syntax.  It
;; is optimized to work in an interactive environment to extract tokens
;; (tags) needed by Semantic.  In some cases a syntax not allowed by
;; the Java Language Specification will be accepted by this grammar.

compilation_unit
  : package_declaration
  | import_declaration
  | type_declaration
  ;

;;; Package statement token
;; ("NAME" package DETAIL "DOCSTRING")
package_declaration
  : PACKAGE qualified_name SEMICOLON
    (PACKAGE-TAG $2 nil)
  ;

;;; Include file token
;; ("FILE" include SYSTEM "DOCSTRING")
import_declaration
  : IMPORT qualified_name SEMICOLON
    (INCLUDE-TAG $2 nil)
  | IMPORT qualified_name DOT MULT SEMICOLON
    (INCLUDE-TAG (concat $2 $3 $4) nil)
  ;

type_declaration
  : SEMICOLON
    ()
  | class_declaration
  | interface_declaration
  ;

;;; Type Declaration token
;; ("NAME" type "TYPE" ( PART-LIST ) ( PARENTS ) EXTRA-SPEC "DOCSTRING")
class_declaration
  : modifiers_opt CLASS qualified_name superc_opt interfaces_opt class_body
    (TYPE-TAG $3 $2 $6 (if (or $4 $5) (cons $4 $5)) :typemodifiers $1)
  ;

superc_opt
  : ;;EMPTY
  | EXTENDS qualified_name
    (identity $2)
  ;

interfaces_opt
  : ;;EMPTY
  | IMPLEMENTS qualified_name_list
    (nreverse $2)
  ;

class_body
  : BRACE_BLOCK
    (EXPANDFULL $1 class_member_declaration)
  ;

class_member_declaration
  : LBRACE
    ()
  | RBRACE
    ()
  | block
    ()
  | static_initializer
    ()
  | constructor_declaration
  | interface_declaration
  | class_declaration
  | method_declaration
  | field_declaration
  ;

;;; Type Declaration token
;; ("NAME" type "TYPE" ( PART-LIST ) ( PARENTS ) EXTRA-SPEC "DOCSTRING")
interface_declaration
  : modifiers_opt INTERFACE qualified_name extends_interfaces_opt interface_body
    (TYPE-TAG $3 $2 $5 (if $4 (cons nil $4)) :typemodifiers $1)
  ;

extends_interfaces_opt
  : ;;EMPTY
  | EXTENDS qualified_name_list
    (identity $2)
  ;

interface_body
  : BRACE_BLOCK
    (EXPANDFULL $1 interface_member_declaration)
  ;

interface_member_declaration
  : LBRACE
    ()
  | RBRACE
    ()
  | interface_declaration
  | class_declaration
  | method_declaration
  | field_declaration
  ;

static_initializer
  : STATIC block
  ;

;;; Function token
;; ("NAME" function "TYPE" ( ARG-LIST ) EXTRA-SPEC "DOCSTRING")
constructor_declaration
  : modifiers_opt constructor_declarator throwsc_opt constructor_body
    (FUNCTION-TAG (car $2) nil (cdr $2)
                  :typemodifiers $1
                  :throws $3
                  :constructor-flag t)
  ;

constructor_declarator
  : IDENTIFIER formal_parameter_list
    (cons $1 $2)
  ;

constructor_body
  : block
  ;

;;; Function token
;; ("NAME" function "TYPE" ( ARG-LIST ) EXTRA-SPEC "DOCSTRING")
method_declaration
  : modifiers_opt VOID method_declarator throwsc_opt method_body
    (FUNCTION-TAG (car $3) $2 (cdr $3) :typemodifiers $1 :throws $4)
  | modifiers_opt type method_declarator throwsc_opt method_body
    (FUNCTION-TAG (car $3) $2 (cdr $3) :typemodifiers $1 :throws $4)
  ;

method_declarator
  : IDENTIFIER formal_parameter_list dims_opt
    (cons (concat $1 $3) $2)
  ;

throwsc_opt
  : ;;EMPTY
  | THROWS qualified_name_list
    (nreverse $2)
  ;

qualified_name_list
  : qualified_name_list COMMA qualified_name
    (cons $3 $1)
  | qualified_name
    (list $1)
  ;

method_body
  : SEMICOLON
  | block
  ;

;; Just eat {...} block!
block
  : BRACE_BLOCK
  ;

formal_parameter_list
  : PAREN_BLOCK
    (EXPANDFULL $1 formal_parameters)
  ;

formal_parameters
  : LPAREN
    ()
  | RPAREN
    ()
  | formal_parameter COMMA
  | formal_parameter RPAREN
  ;

;;; Variable token
;; ("NAME" variable "TYPE" DEFAULT-VALUE EXTRA-SPEC "DOCSTRING")
formal_parameter
  : formal_parameter_modifier_opt type opt_variable_declarator_id
    (VARIABLE-TAG $3 $2 nil :typemodifiers $1)
  ;

formal_parameter_modifier_opt
  : ;;EMPTY
  | FINAL
    (list $1)
  ;

;;; Variable token
;; ("NAME" variable "TYPE" DEFAULT-VALUE EXTRA-SPEC "DOCSTRING")
field_declaration
  : modifiers_opt type variable_declarators SEMICOLON
    (VARIABLE-TAG $3 $2 nil :typemodifiers $1)
  ;

variable_declarators
  : variable_declarators COMMA variable_declarator
    (progn
      ;; Set the end of the compound declaration to the end of the
      ;; COMMA delimiter.
      (setcdr (cdr (car $1)) (cdr $region2))
      (cons $3 $1))
  | variable_declarator
    (list $1)
  ;

variable_declarator
  : variable_declarator_id EQ variable_initializer
    (cons $1 $region)
  | variable_declarator_id
    (cons $1 $region)
  ;

opt_variable_declarator_id
  : ;; EMPTY
    (identity "")
  | variable_declarator_id
    (identity $1)
  ;

variable_declarator_id
  : IDENTIFIER dims_opt
    (concat $1 $2)
  ;

variable_initializer
  : expression
  ;

;; Just eat expression!
expression
  : expression term
  | term
  ;

term
  : literal
  | operator
  | primitive_type
  | IDENTIFIER
  | BRACK_BLOCK
  | PAREN_BLOCK
  | BRACE_BLOCK
  | NEW
  | CLASS
  | THIS
  | SUPER
  ;

literal
;;   : NULL_LITERAL
;;   | BOOLEAN_LITERAL
  : STRING_LITERAL
  | NUMBER_LITERAL
  ;

operator
  : NOT
  | PLUS
  | PLUSPLUS
  | MINUS
  | MINUSMINUS
  | NOTEQ
  | MOD
  | MODEQ
  | AND
  | ANDAND
  | ANDEQ
  | MULT
  | MULTEQ
  | PLUSEQ
  | MINUSEQ
  | DOT
  | DIV
  | DIVEQ
  | COLON
  | LT
  | LSHIFT
  | LSHIFTEQ
  | LTEQ
  | EQ
  | EQEQ
  | GT
  | GTEQ
  | RSHIFT
  | RSHIFTEQ
  | URSHIFT
  | URSHIFTEQ
  | QUESTION
  | XOR
  | XOREQ
  | OR
  | OREQ
  | OROR
  | COMP
  | INSTANCEOF
  ;

primitive_type
  : BOOLEAN
  | CHAR
  | LONG
  | INT
  | SHORT
  | BYTE
  | DOUBLE
  | FLOAT
  ;

modifiers_opt
  : ;;EMPTY
  | modifiers
    (nreverse $1)
  ;

modifiers
  : modifiers modifier
    (cons $2 $1)
  | modifier
    (list $1)
  ;

modifier
  : STRICTFP
  | VOLATILE
  | TRANSIENT
  | SYNCHRONIZED
  | NATIVE
  | FINAL
  | ABSTRACT
  | STATIC
  | PRIVATE
  | PROTECTED
  | PUBLIC
  ;

type
  : qualified_name dims_opt
    (concat $1 $2)
  | primitive_type dims_opt
    (concat $1 $2)
  ;

qualified_name
  : qualified_name DOT IDENTIFIER
    (concat $1 $2 $3)
  | IDENTIFIER
  ;

dims_opt
  : ;;EMPTY
    (identity "")
  | dims
  ;

dims
  : dims BRACK_BLOCK
    (concat $1 "[]")
  | BRACK_BLOCK
    (identity "[]")
  ;

%%
;; Define the lexer for this grammar
(define-lex wisent-java-tags-lexer
  "Lexical analyzer that handles Java buffers.
It ignores whitespaces, newlines and comments."
  semantic-lex-ignore-whitespace
  semantic-lex-ignore-newline
  semantic-lex-ignore-comments
  ;;;; Auto-generated analyzers.
  wisent-java-tags-wy--<number>-regexp-analyzer
  wisent-java-tags-wy--<string>-sexp-analyzer
  ;; Must detect keywords before other symbols
  wisent-java-tags-wy--<keyword>-keyword-analyzer
  wisent-java-tags-wy--<symbol>-regexp-analyzer
  wisent-java-tags-wy--<punctuation>-string-analyzer
  wisent-java-tags-wy--<block>-block-analyzer
  ;; In theory, Unicode chars should be turned into normal chars
  ;; and then combined into regular ascii keywords and text.  This
  ;; analyzer just keeps these things from making the lexer go boom.
  wisent-java-tags-wy--<unicode>-regexp-analyzer
  ;;;;
  semantic-lex-default-action)

;;; java-tags.wy ends here