629 lines
19 KiB
Plaintext
629 lines
19 KiB
Plaintext
-*- Autoconf -*-
|
|
|
|
# D language support for Bison
|
|
|
|
# Copyright (C) 2018-2021 Free Software Foundation, Inc.
|
|
|
|
# This program 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.
|
|
#
|
|
# This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
|
|
m4_include(b4_skeletonsdir/[c-like.m4])
|
|
|
|
|
|
# b4_symbol_action(SYMBOL-NUM, ACTION)
|
|
# ------------------------------------
|
|
# Run the action ACTION ("destructor" or "printer") for SYMBOL-NUM.
|
|
m4_define([b4_symbol_action],
|
|
[b4_symbol_if([$1], [has_$2],
|
|
[b4_dollar_pushdef([yyval],
|
|
[$1],
|
|
[],
|
|
[yyloc])dnl
|
|
_b4_symbol_case([$1])[]dnl
|
|
b4_syncline([b4_symbol([$1], [$2_line])], [b4_symbol([$1], [$2_file])])dnl
|
|
b4_symbol([$1], [$2])
|
|
b4_syncline([@oline@], [@ofile@])dnl
|
|
break;
|
|
|
|
b4_dollar_popdef[]dnl
|
|
])])
|
|
|
|
|
|
# b4_use(EXPR)
|
|
# ------------
|
|
# Pacify the compiler about some maybe unused value.
|
|
m4_define([b4_use],
|
|
[])
|
|
|
|
|
|
# b4_sync_start(LINE, FILE)
|
|
# -------------------------
|
|
m4_define([b4_sync_start], [[#]line $1 $2])
|
|
|
|
|
|
# b4_list2(LIST1, LIST2)
|
|
# ----------------------
|
|
# Join two lists with a comma if necessary.
|
|
m4_define([b4_list2],
|
|
[$1[]m4_ifval(m4_quote($1), [m4_ifval(m4_quote($2), [[, ]])])[]$2])
|
|
|
|
|
|
# b4_percent_define_get3(DEF, PRE, POST, NOT)
|
|
# -------------------------------------------
|
|
# Expand to the value of DEF surrounded by PRE and POST if it's %define'ed,
|
|
# otherwise NOT.
|
|
m4_define([b4_percent_define_get3],
|
|
[m4_ifval(m4_quote(b4_percent_define_get([$1])),
|
|
[$2[]b4_percent_define_get([$1])[]$3], [$4])])
|
|
|
|
# b4_percent_define_if_get2(ARG1, ARG2, DEF, NOT)
|
|
# -----------------------------------------------
|
|
# Expand to the value of DEF if ARG1 or ARG2 are %define'ed,
|
|
# otherwise NOT.
|
|
m4_define([b4_percent_define_if_get2],
|
|
[m4_ifval(m4_quote(b4_percent_define_get([$1])),
|
|
[$3], [m4_ifval(m4_quote(b4_percent_define_get([$2])),
|
|
[$3], [$4])])])
|
|
|
|
# b4_percent_define_class_before_interface(CLASS, INTERFACE)
|
|
# ----------------------------------------------------------
|
|
# Expand to a ', ' if both a class and an interface have been %define'ed
|
|
m4_define([b4_percent_define_class_before_interface],
|
|
[m4_ifval(m4_quote(b4_percent_define_get([$1])),
|
|
[m4_ifval(m4_quote(b4_percent_define_get([$2])),
|
|
[, ])])])
|
|
|
|
|
|
# b4_flag_value(BOOLEAN-FLAG)
|
|
# ---------------------------
|
|
m4_define([b4_flag_value], [b4_flag_if([$1], [true], [false])])
|
|
|
|
|
|
# b4_parser_class_declaration
|
|
# ---------------------------
|
|
# The declaration of the parser class ("class YYParser"), with all its
|
|
# qualifiers/annotations.
|
|
b4_percent_define_default([[api.parser.abstract]], [[false]])
|
|
b4_percent_define_default([[api.parser.final]], [[false]])
|
|
b4_percent_define_default([[api.parser.public]], [[false]])
|
|
|
|
m4_define([b4_parser_class_declaration],
|
|
[b4_percent_define_get3([api.parser.annotations], [], [ ])dnl
|
|
b4_percent_define_flag_if([api.parser.public], [public ])dnl
|
|
b4_percent_define_flag_if([api.parser.abstract], [abstract ])dnl
|
|
b4_percent_define_flag_if([api.parser.final], [final ])dnl
|
|
[class ]b4_parser_class[]dnl
|
|
b4_percent_define_if_get2([api.parser.extends], [api.parser.implements], [ : ])dnl
|
|
b4_percent_define_get([api.parser.extends])dnl
|
|
b4_percent_define_class_before_interface([api.parser.extends], [api.parser.implements])dnl
|
|
b4_percent_define_get([api.parser.implements])])
|
|
|
|
|
|
# b4_lexer_if(TRUE, FALSE)
|
|
# ------------------------
|
|
m4_define([b4_lexer_if],
|
|
[b4_percent_code_ifdef([[lexer]], [$1], [$2])])
|
|
|
|
|
|
# b4_position_type_if(TRUE, FALSE)
|
|
# --------------------------------
|
|
m4_define([b4_position_type_if],
|
|
[b4_percent_define_ifdef([[position_type]], [$1], [$2])])
|
|
|
|
|
|
# b4_location_type_if(TRUE, FALSE)
|
|
# --------------------------------
|
|
m4_define([b4_location_type_if],
|
|
[b4_percent_define_ifdef([[location_type]], [$1], [$2])])
|
|
|
|
|
|
# b4_identification
|
|
# -----------------
|
|
m4_define([b4_identification],
|
|
[[/** Version number for the Bison executable that generated this parser. */
|
|
public static immutable string yy_bison_version = "]b4_version_string[";
|
|
|
|
/** Name of the skeleton that generated this parser. */
|
|
public static immutable string yy_bison_skeleton = ]b4_skeleton[;
|
|
]])
|
|
|
|
|
|
## ------------ ##
|
|
## Data types. ##
|
|
## ------------ ##
|
|
|
|
# b4_int_type(MIN, MAX)
|
|
# ---------------------
|
|
# Return the smallest int type able to handle numbers ranging from
|
|
# MIN to MAX (included).
|
|
m4_define([b4_int_type],
|
|
[m4_if(b4_ints_in($@, [-128], [127]), [1], [byte],
|
|
b4_ints_in($@, [-32768], [32767]), [1], [short],
|
|
[int])])
|
|
|
|
# b4_int_type_for(NAME)
|
|
# ---------------------
|
|
# Return the smallest int type able to handle numbers ranging from
|
|
# `NAME_min' to `NAME_max' (included).
|
|
m4_define([b4_int_type_for],
|
|
[b4_int_type($1_min, $1_max)])
|
|
|
|
# b4_null
|
|
# -------
|
|
m4_define([b4_null], [null])
|
|
|
|
|
|
# b4_integral_parser_table_define(NAME, DATA, COMMENT)
|
|
#-----------------------------------------------------
|
|
# Define "yy<TABLE-NAME>" whose contents is CONTENT.
|
|
m4_define([b4_integral_parser_table_define],
|
|
[m4_ifvaln([$3], [b4_comment([$3], [ ])])dnl
|
|
private static immutable b4_int_type_for([$2])[[]] yy$1_ =
|
|
@{
|
|
$2
|
|
@};dnl
|
|
])
|
|
|
|
|
|
## ------------- ##
|
|
## Token kinds. ##
|
|
## ------------- ##
|
|
|
|
m4_define([b4_symbol(-2, id)], [[YYEMPTY]])
|
|
b4_percent_define_default([[api.token.raw]], [[true]])
|
|
|
|
# b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
|
|
# ---------------------------------------
|
|
# Output the definition of this token as an enum.
|
|
m4_define([b4_token_enum],
|
|
[b4_token_format([ %s = %s,
|
|
], [$1])])
|
|
|
|
# b4_token_enums
|
|
# --------------
|
|
# Output the definition of the tokens as enums.
|
|
m4_define([b4_token_enums],
|
|
[/* Token kinds. */
|
|
public enum TokenKind {
|
|
]b4_symbol(empty, id)[ = -2,
|
|
b4_symbol_foreach([b4_token_enum])dnl
|
|
}
|
|
])
|
|
|
|
# b4_symbol_translate(STRING)
|
|
# ---------------------------
|
|
# Used by "bison" in the array of symbol names to mark those that
|
|
# require translation.
|
|
m4_define([b4_symbol_translate],
|
|
[[_($1)]])
|
|
|
|
|
|
# _b4_token_constructor_define(SYMBOL-NUM)
|
|
# ----------------------------------------
|
|
# Define Symbol.FOO for SYMBOL-NUM.
|
|
m4_define([_b4_token_constructor_define],
|
|
[b4_token_visible_if([$1],
|
|
[[
|
|
static auto ]b4_symbol([$1], [id])[(]b4_symbol_if([$1], [has_type],
|
|
[b4_union_if([b4_symbol([$1], [type]],
|
|
[[typeof(YYSemanticType.]b4_symbol([$1], [type])[]])) [val]])dnl
|
|
[]b4_locations_if([b4_symbol_if([$1], [has_type], [[, ]])[Location l]])[)
|
|
{
|
|
return Symbol(TokenKind.]b4_symbol([$1], [id])[]b4_symbol_if([$1], [has_type],
|
|
[[, val]])[]b4_locations_if([[, l]])[);
|
|
}]])])
|
|
|
|
# b4_token_constructor_define
|
|
# ---------------------------
|
|
# Define Symbol.FOO for each token kind FOO.
|
|
m4_define([b4_token_constructor_define],
|
|
[[
|
|
/* Implementation of token constructors for each symbol type visible to
|
|
* the user. The code generates static methods that have the same names
|
|
* as the TokenKinds.
|
|
*/]b4_symbol_foreach([_b4_token_constructor_define])dnl
|
|
])
|
|
|
|
## -------------- ##
|
|
## Symbol kinds. ##
|
|
## -------------- ##
|
|
|
|
# b4_symbol_kind(NUM)
|
|
# -------------------
|
|
m4_define([b4_symbol_kind],
|
|
[SymbolKind.b4_symbol_kind_base($@)])
|
|
|
|
|
|
# b4_symbol_enum(SYMBOL-NUM)
|
|
# --------------------------
|
|
# Output the definition of this symbol as an enum.
|
|
m4_define([b4_symbol_enum],
|
|
[m4_format([ %-30s %s],
|
|
m4_format([[%s = %s,]],
|
|
b4_symbol([$1], [kind_base]),
|
|
[$1]),
|
|
[b4_symbol_tag_comment([$1])])])
|
|
|
|
|
|
# b4_declare_symbol_enum
|
|
# ----------------------
|
|
# The definition of the symbol internal numbers as an enum.
|
|
# Defining YYEMPTY here is important: it forces the compiler
|
|
# to use a signed type, which matters for yytoken.
|
|
m4_define([b4_declare_symbol_enum],
|
|
[[ /* Symbol kinds. */
|
|
struct SymbolKind
|
|
{
|
|
enum
|
|
{
|
|
]b4_symbol(empty, kind_base)[ = -2, /* No symbol. */
|
|
]b4_symbol_foreach([b4_symbol_enum])dnl
|
|
[ }
|
|
|
|
private int yycode_;
|
|
alias yycode_ this;
|
|
|
|
this(int code)
|
|
{
|
|
yycode_ = code;
|
|
}
|
|
|
|
/* Return YYSTR after stripping away unnecessary quotes and
|
|
backslashes, so that it's suitable for yyerror. The heuristic is
|
|
that double-quoting is unnecessary unless the string contains an
|
|
apostrophe, a comma, or backslash (other than backslash-backslash).
|
|
YYSTR is taken from yytname. */
|
|
final void toString(W)(W sink) const
|
|
if (isOutputRange!(W, char))
|
|
{
|
|
immutable string[] yy_sname = @{
|
|
]b4_symbol_names[
|
|
@};]b4_has_translations_if([[
|
|
/* YYTRANSLATABLE[SYMBOL-NUM] -- Whether YY_SNAME[SYMBOL-NUM] is
|
|
internationalizable. */
|
|
immutable ]b4_int_type_for([b4_translatable])[[] yytranslatable = @{
|
|
]b4_translatable[
|
|
@};]])[
|
|
|
|
put(sink, yy_sname[yycode_]);
|
|
}
|
|
}
|
|
]])
|
|
|
|
|
|
# b4_case(ID, CODE, [COMMENTS])
|
|
# -----------------------------
|
|
m4_define([b4_case], [ case $1:m4_ifval([$3], [ b4_comment([$3])])
|
|
$2
|
|
break;])
|
|
|
|
|
|
## ---------------- ##
|
|
## Default values. ##
|
|
## ---------------- ##
|
|
|
|
m4_define([b4_yystype], [b4_percent_define_get([[stype]])])
|
|
b4_percent_define_default([[stype]], [[YYSemanticType]])])
|
|
|
|
# %name-prefix
|
|
m4_define_default([b4_prefix], [[YY]])
|
|
|
|
b4_percent_define_default([[api.parser.class]], [b4_prefix[]Parser])])
|
|
m4_define([b4_parser_class], [b4_percent_define_get([[api.parser.class]])])
|
|
|
|
#b4_percent_define_default([[location_type]], [Location])])
|
|
m4_define([b4_location_type], b4_percent_define_ifdef([[location_type]],[b4_percent_define_get([[location_type]])],[YYLocation]))
|
|
|
|
#b4_percent_define_default([[position_type]], [Position])])
|
|
m4_define([b4_position_type], b4_percent_define_ifdef([[position_type]],[b4_percent_define_get([[position_type]])],[YYPosition]))
|
|
|
|
|
|
## ---------------- ##
|
|
## api.value.type. ##
|
|
## ---------------- ##
|
|
|
|
|
|
# ---------------------- #
|
|
# api.value.type=union. #
|
|
# ---------------------- #
|
|
|
|
# b4_symbol_type_register(SYMBOL-NUM)
|
|
# -----------------------------------
|
|
# Symbol SYMBOL-NUM has a type (for union) instead of a type-tag.
|
|
# Extend the definition of %union's body (b4_union_members) with a
|
|
# field of that type, and extend the symbol's "type" field to point to
|
|
# the field name, instead of the type name.
|
|
m4_define([b4_symbol_type_register],
|
|
[m4_define([b4_symbol($1, type_tag)],
|
|
[b4_symbol_if([$1], [has_id],
|
|
[b4_symbol([$1], [id])],
|
|
[yykind_[]b4_symbol([$1], [number])])])dnl
|
|
m4_append([b4_union_members],
|
|
m4_expand([m4_format([ %-40s %s],
|
|
m4_expand([b4_symbol([$1], [type]) b4_symbol([$1], [type_tag]);]),
|
|
[b4_symbol_tag_comment([$1])])]))
|
|
])
|
|
|
|
|
|
# b4_type_define_tag(SYMBOL1-NUM, ...)
|
|
# ------------------------------------
|
|
# For the batch of symbols SYMBOL1-NUM... (which all have the same
|
|
# type), enhance the %union definition for each of them, and set
|
|
# there "type" field to the field tag name, instead of the type name.
|
|
m4_define([b4_type_define_tag],
|
|
[b4_symbol_if([$1], [has_type],
|
|
[m4_map([b4_symbol_type_register], [$@])])
|
|
])
|
|
|
|
|
|
# b4_symbol_value_union(VAL, SYMBOL-NUM, [TYPE])
|
|
# ----------------------------------------------
|
|
# Same of b4_symbol_value, but when api.value.type=union.
|
|
m4_define([b4_symbol_value_union],
|
|
[m4_ifval([$3],
|
|
[(*($3*)(&$1))],
|
|
[m4_ifval([$2],
|
|
[b4_symbol_if([$2], [has_type],
|
|
[($1.b4_symbol([$2], [type_tag]))],
|
|
[$1])],
|
|
[$1])])])
|
|
|
|
|
|
# b4_value_type_setup_union
|
|
# -------------------------
|
|
# Setup support for api.value.type=union. Symbols are defined with a
|
|
# type instead of a union member name: build the corresponding union,
|
|
# and give the symbols their tag.
|
|
m4_define([b4_value_type_setup_union],
|
|
[m4_define([b4_union_members])
|
|
b4_type_foreach([b4_type_define_tag])
|
|
m4_copy_force([b4_symbol_value_union], [b4_symbol_value])
|
|
])
|
|
|
|
|
|
# _b4_value_type_setup_keyword
|
|
# ----------------------------
|
|
# api.value.type is defined with a keyword/string syntax. Check if
|
|
# that is properly defined, and prepare its use.
|
|
m4_define([_b4_value_type_setup_keyword],
|
|
[b4_percent_define_check_values([[[[api.value.type]],
|
|
[[none]],
|
|
[[union]],
|
|
[[union-directive]],
|
|
[[yystype]]]])dnl
|
|
m4_case(b4_percent_define_get([[api.value.type]]),
|
|
[union], [b4_value_type_setup_union])])
|
|
|
|
|
|
# b4_value_type_setup
|
|
# -------------------
|
|
# Check if api.value.type is properly defined, and possibly prepare
|
|
# its use.
|
|
b4_define_silent([b4_value_type_setup],
|
|
[
|
|
# Define default value.
|
|
b4_percent_define_ifdef([[api.value.type]], [],
|
|
[# %union => api.value.type=union-directive
|
|
m4_ifdef([b4_union_members],
|
|
[m4_define([b4_percent_define_kind(api.value.type)], [keyword])
|
|
m4_define([b4_percent_define(api.value.type)], [union-directive])],
|
|
[# no tag seen => api.value.type={int}
|
|
m4_if(b4_tag_seen_flag, 0,
|
|
[m4_define([b4_percent_define_kind(api.value.type)], [code])
|
|
m4_define([b4_percent_define(api.value.type)], [int])],
|
|
[# otherwise api.value.type=yystype
|
|
m4_define([b4_percent_define_kind(api.value.type)], [keyword])
|
|
m4_define([b4_percent_define(api.value.type)], [yystype])])])])
|
|
|
|
# Set up.
|
|
m4_bmatch(b4_percent_define_get_kind([[api.value.type]]),
|
|
[keyword], [_b4_value_type_setup_keyword])
|
|
])
|
|
|
|
|
|
## ----------------- ##
|
|
## Semantic Values. ##
|
|
## ----------------- ##
|
|
|
|
|
|
# b4_symbol_value(VAL, [SYMBOL-NUM], [TYPE-TAG])
|
|
# ----------------------------------------------
|
|
# See README. FIXME: factor in c-like?
|
|
m4_define([b4_symbol_value],
|
|
[m4_ifval([$3],
|
|
[($1.$3)],
|
|
[m4_ifval([$2],
|
|
[b4_symbol_if([$2], [has_type],
|
|
[($1.b4_symbol([$2], [type]))],
|
|
[$1])],
|
|
[$1])])])
|
|
|
|
# b4_lhs_value(SYMBOL-NUM, [TYPE])
|
|
# --------------------------------
|
|
# See README.
|
|
m4_define([b4_lhs_value],
|
|
[b4_symbol_value([yyval], [$1], [$2])])
|
|
|
|
|
|
# b4_rhs_value(RULE-LENGTH, POS, SYMBOL-NUM, [TYPE])
|
|
# --------------------------------------------------
|
|
# See README.
|
|
#
|
|
# In this simple implementation, %token and %type have class names
|
|
# between the angle brackets.
|
|
m4_define([b4_rhs_value],
|
|
[b4_symbol_value([(yystack.valueAt (b4_subtract([$1], [$2])))], [$3], [$4])])
|
|
|
|
|
|
# b4_lhs_location()
|
|
# -----------------
|
|
# Expansion of @$.
|
|
m4_define([b4_lhs_location],
|
|
[(yyloc)])
|
|
|
|
|
|
# b4_rhs_location(RULE-LENGTH, POS)
|
|
# ---------------------------------
|
|
# Expansion of @POS, where the current rule has RULE-LENGTH symbols
|
|
# on RHS.
|
|
m4_define([b4_rhs_location],
|
|
[yystack.locationAt (b4_subtract($@))])
|
|
|
|
|
|
# b4_lex_param
|
|
# b4_parse_param
|
|
# --------------
|
|
# If defined, b4_lex_param arrives double quoted, but below we prefer
|
|
# it to be single quoted. Same for b4_parse_param.
|
|
|
|
# TODO: should be in bison.m4
|
|
m4_define_default([b4_lex_param], [[]]))
|
|
m4_define([b4_lex_param], b4_lex_param))
|
|
m4_define([b4_parse_param], b4_parse_param))
|
|
|
|
# b4_lex_param_decl
|
|
# -------------------
|
|
# Extra formal arguments of the constructor.
|
|
m4_define([b4_lex_param_decl],
|
|
[m4_ifset([b4_lex_param],
|
|
[b4_remove_comma([$1],
|
|
b4_param_decls(b4_lex_param))],
|
|
[$1])])
|
|
|
|
m4_define([b4_param_decls],
|
|
[m4_map([b4_param_decl], [$@])])
|
|
m4_define([b4_param_decl], [, $1])
|
|
|
|
m4_define([b4_remove_comma], [m4_ifval(m4_quote($1), [$1, ], [])m4_shift2($@)])
|
|
|
|
|
|
|
|
# b4_parse_param_decl
|
|
# -------------------
|
|
# Extra formal arguments of the constructor.
|
|
m4_define([b4_parse_param_decl],
|
|
[m4_ifset([b4_parse_param],
|
|
[b4_remove_comma([$1],
|
|
b4_param_decls(b4_parse_param))],
|
|
[$1])])
|
|
|
|
|
|
|
|
# b4_lex_param_call
|
|
# -------------------
|
|
# Delegating the lexer parameters to the lexer constructor.
|
|
m4_define([b4_lex_param_call],
|
|
[m4_ifset([b4_lex_param],
|
|
[b4_remove_comma([$1],
|
|
b4_param_calls(b4_lex_param))],
|
|
[$1])])
|
|
m4_define([b4_param_calls],
|
|
[m4_map([b4_param_call], [$@])])
|
|
m4_define([b4_param_call], [, $2])
|
|
|
|
|
|
|
|
# b4_parse_param_cons
|
|
# -------------------
|
|
# Extra initialisations of the constructor.
|
|
m4_define([b4_parse_param_cons],
|
|
[m4_ifset([b4_parse_param],
|
|
[b4_constructor_calls(b4_parse_param)])])
|
|
|
|
m4_define([b4_constructor_calls],
|
|
[m4_map([b4_constructor_call], [$@])])
|
|
m4_define([b4_constructor_call],
|
|
[this.$2 = $2;
|
|
])
|
|
|
|
|
|
|
|
# b4_parse_param_vars
|
|
# -------------------
|
|
# Extra instance variables.
|
|
m4_define([b4_parse_param_vars],
|
|
[m4_ifset([b4_parse_param],
|
|
[
|
|
/* User arguments. */
|
|
b4_var_decls(b4_parse_param)])])
|
|
|
|
m4_define([b4_var_decls],
|
|
[m4_map_sep([b4_var_decl], [
|
|
], [$@])])
|
|
m4_define([b4_var_decl],
|
|
[ protected $1;])
|
|
|
|
|
|
# b4_public_types_declare
|
|
# -----------------------
|
|
# Define the public types: token, semantic value, location, and so forth.
|
|
# Depending on %define token_lex, may be output in the header or source file.
|
|
m4_define([b4_public_types_declare],
|
|
[[
|
|
alias Symbol = ]b4_parser_class[.Symbol;
|
|
alias Value = ]b4_yystype[;]b4_locations_if([[
|
|
alias Location = ]b4_location_type[;
|
|
alias Position = ]b4_position_type[;]b4_push_if([[
|
|
alias PUSH_MORE = ]b4_parser_class[.YYPUSH_MORE;
|
|
alias ABORT = ]b4_parser_class[.YYABORT;
|
|
alias ACCEPT = ]b4_parser_class[.YYACCEPT;]])[]])[
|
|
]])
|
|
|
|
|
|
# b4_basic_symbol_constructor_define
|
|
# ----------------------------------
|
|
# Create Symbol struct constructors for all the visible types.
|
|
m4_define([b4_basic_symbol_constructor_define],
|
|
[b4_token_visible_if([$1],
|
|
[[ this(TokenKind token]b4_symbol_if([$1], [has_type],
|
|
[[, ]b4_union_if([], [[typeof(YYSemanticType.]])b4_symbol([$1], [type])dnl
|
|
[]b4_union_if([], [[) ]])[ val]])[]b4_locations_if([[, Location loc]])[)
|
|
{
|
|
kind = yytranslate_(token);]b4_union_if([b4_symbol_if([$1], [has_type], [[
|
|
static foreach (member; __traits(allMembers, YYSemanticType))
|
|
{
|
|
static if (is(typeof(mixin("value_." ~ member)) == ]b4_symbol([$1], [type])[))
|
|
{
|
|
mixin("value_." ~ member ~ " = val;");
|
|
}
|
|
}]])], [b4_symbol_if([$1], [has_type], [[
|
|
value_.]b4_symbol([$1], [type])[ = val;]])])[]b4_locations_if([
|
|
location_ = loc;])[
|
|
}
|
|
]])])
|
|
|
|
|
|
# b4_symbol_type_define
|
|
# ---------------------
|
|
# Define symbol_type, the external type for symbols used for symbol
|
|
# constructors.
|
|
m4_define([b4_symbol_type_define],
|
|
[[
|
|
/**
|
|
* A complete symbol
|
|
*/
|
|
struct Symbol
|
|
{
|
|
private SymbolKind kind;
|
|
private Value value_;]b4_locations_if([[
|
|
private Location location_;]])[
|
|
|
|
]b4_type_foreach([b4_basic_symbol_constructor_define])[
|
|
SymbolKind token() { return kind; }
|
|
Value value() { return value_; }]b4_locations_if([[
|
|
Location location() { return location_; }]])[
|
|
]b4_token_ctor_if([b4_token_constructor_define])[
|
|
}
|
|
]])
|