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muscle: factor the kind check in M4
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1 -*- Autoconf -*-
2
3# Java language support for Bison
4
5# Copyright (C) 2007-2013 Free Software Foundation, Inc.
6
7# This program is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation, either version 3 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program. If not, see <http://www.gnu.org/licenses/>.
19
20m4_include(b4_pkgdatadir/[c-like.m4])
21
22
23# b4_list2(LIST1, LIST2)
24# ----------------------
25# Join two lists with a comma if necessary.
26m4_define([b4_list2],
27 [$1[]m4_ifval(m4_quote($1), [m4_ifval(m4_quote($2), [[, ]])])[]$2])
28
29
30# b4_percent_define_get3(DEF, PRE, POST, NOT)
31# -------------------------------------------
32# Expand to the value of DEF surrounded by PRE and POST if it's %define'ed,
33# otherwise NOT.
34m4_define([b4_percent_define_get3],
35 [m4_ifval(m4_quote(b4_percent_define_get([$1])),
36 [$2[]b4_percent_define_get([$1])[]$3], [$4])])
37
38
39
40# b4_flag_value(BOOLEAN-FLAG)
41# ---------------------------
42m4_define([b4_flag_value], [b4_flag_if([$1], [true], [false])])
43
44
45# b4_public_if(TRUE, FALSE)
46# -------------------------
47b4_percent_define_default([[public]], [[false]])
48m4_define([b4_public_if],
49[b4_percent_define_flag_if([public], [$1], [$2])])
50
51
52# b4_abstract_if(TRUE, FALSE)
53# ---------------------------
54b4_percent_define_default([[abstract]], [[false]])
55m4_define([b4_abstract_if],
56[b4_percent_define_flag_if([abstract], [$1], [$2])])
57
58
59# b4_final_if(TRUE, FALSE)
60# ---------------------------
61b4_percent_define_default([[final]], [[false]])
62m4_define([b4_final_if],
63[b4_percent_define_flag_if([final], [$1], [$2])])
64
65
66# b4_strictfp_if(TRUE, FALSE)
67# ---------------------------
68b4_percent_define_default([[strictfp]], [[false]])
69m4_define([b4_strictfp_if],
70[b4_percent_define_flag_if([strictfp], [$1], [$2])])
71
72
73# b4_lexer_if(TRUE, FALSE)
74# ------------------------
75m4_define([b4_lexer_if],
76[b4_percent_code_ifdef([[lexer]], [$1], [$2])])
77
78
79# b4_identification
80# -----------------
81m4_define([b4_identification],
82[ /** Version number for the Bison executable that generated this parser. */
83 public static final String bisonVersion = "b4_version";
84
85 /** Name of the skeleton that generated this parser. */
86 public static final String bisonSkeleton = b4_skeleton;
87])
88
89
90## ------------ ##
91## Data types. ##
92## ------------ ##
93
94# b4_int_type(MIN, MAX)
95# ---------------------
96# Return the smallest int type able to handle numbers ranging from
97# MIN to MAX (included).
98m4_define([b4_int_type],
99[m4_if(b4_ints_in($@, [-128], [127]), [1], [byte],
100 b4_ints_in($@, [-32768], [32767]), [1], [short],
101 [int])])
102
103# b4_int_type_for(NAME)
104# ---------------------
105# Return the smallest int type able to handle numbers ranging from
106# 'NAME_min' to 'NAME_max' (included).
107m4_define([b4_int_type_for],
108[b4_int_type($1_min, $1_max)])
109
110# b4_null
111# -------
112m4_define([b4_null], [null])
113
114
115# b4_typed_parser_table_define(TYPE, NAME, DATA, COMMENT)
116# -------------------------------------------------------
117m4_define([b4_typed_parser_table_define],
118[m4_ifval([$4], [b4_comment([$4])
119 ])dnl
120[private static final ]$1[ yy$2_[] = yy$2_init();
121 private static final ]$1[[] yy$2_init()
122 {
123 return new ]$1[[]
124 {
125 ]$3[
126 };
127 }]])
128
129
130# b4_integral_parser_table_define(NAME, DATA, COMMENT)
131#-----------------------------------------------------
132m4_define([b4_integral_parser_table_define],
133[b4_typed_parser_table_define([b4_int_type_for([$2])], [$1], [$2], [$3])])
134
135
136## ------------------------- ##
137## Assigning token numbers. ##
138## ------------------------- ##
139
140# b4_token_enum(TOKEN-NUM)
141# ------------------------
142# Output the definition of this token as an enum.
143m4_define([b4_token_enum],
144[b4_token_format([ /** Token number, to be returned by the scanner. */
145 static final int %s = %s;
146], [$1])])
147
148# b4_token_enums
149# --------------
150# Output the definition of the tokens (if there are) as enums.
151m4_define([b4_token_enums],
152[b4_any_token_visible_if([/* Tokens. */
153b4_symbol_foreach([b4_token_enum])])])
154
155# b4-case(ID, CODE)
156# -----------------
157# We need to fool Java's stupid unreachable code detection.
158m4_define([b4_case], [ case $1:
159 if (yyn == $1)
160 $2;
161 break;
162 ])
163
164# b4_predicate_case(LABEL, CONDITIONS)
165# ------------------------------------
166m4_define([b4_predicate_case], [ case $1:
167 if (! ($2)) YYERROR;
168 break;
169 ])
170
171
172## ---------------- ##
173## Default values. ##
174## ---------------- ##
175
176m4_define([b4_yystype], [b4_percent_define_get([[api.value.type]])])
177b4_percent_define_default([[api.value.type]], [[Object]])
178
179# %name-prefix
180m4_define_default([b4_prefix], [[YY]])
181
182b4_percent_define_default([[parser_class_name]], [b4_prefix[]Parser])
183m4_define([b4_parser_class_name], [b4_percent_define_get([[parser_class_name]])])
184
185b4_percent_define_default([[lex_throws]], [[java.io.IOException]])
186m4_define([b4_lex_throws], [b4_percent_define_get([[lex_throws]])])
187
188b4_percent_define_default([[throws]], [])
189m4_define([b4_throws], [b4_percent_define_get([[throws]])])
190
191b4_percent_define_default([[init_throws]], [])
192m4_define([b4_init_throws], [b4_percent_define_get([[init_throws]])])
193
194b4_percent_define_default([[api.location.type]], [Location])
195m4_define([b4_location_type], [b4_percent_define_get([[api.location.type]])])
196
197b4_percent_define_default([[api.position.type]], [Position])
198m4_define([b4_position_type], [b4_percent_define_get([[api.position.type]])])
199
200
201## ----------------- ##
202## Semantic Values. ##
203## ----------------- ##
204
205
206# b4_lhs_value([TYPE])
207# --------------------
208# Expansion of $<TYPE>$.
209m4_define([b4_lhs_value], [yyval])
210
211
212# b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
213# --------------------------------------
214# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
215# symbols on RHS.
216#
217# In this simple implementation, %token and %type have class names
218# between the angle brackets.
219m4_define([b4_rhs_value],
220[(m4_ifval($3, [($3)])[](yystack.valueAt ($1-($2))))])
221
222# b4_lhs_location()
223# -----------------
224# Expansion of @$.
225m4_define([b4_lhs_location],
226[(yyloc)])
227
228
229# b4_rhs_location(RULE-LENGTH, NUM)
230# ---------------------------------
231# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
232# on RHS.
233m4_define([b4_rhs_location],
234[yystack.locationAt ($1-($2))])
235
236
237# b4_lex_param
238# b4_parse_param
239# --------------
240# If defined, b4_lex_param arrives double quoted, but below we prefer
241# it to be single quoted. Same for b4_parse_param.
242
243# TODO: should be in bison.m4
244m4_define_default([b4_lex_param], [[]])
245m4_define([b4_lex_param], b4_lex_param)
246m4_define([b4_parse_param], b4_parse_param)
247
248# b4_lex_param_decl
249# -----------------
250# Extra formal arguments of the constructor.
251m4_define([b4_lex_param_decl],
252[m4_ifset([b4_lex_param],
253 [b4_remove_comma([$1],
254 b4_param_decls(b4_lex_param))],
255 [$1])])
256
257m4_define([b4_param_decls],
258 [m4_map([b4_param_decl], [$@])])
259m4_define([b4_param_decl], [, $1])
260
261m4_define([b4_remove_comma], [m4_ifval(m4_quote($1), [$1, ], [])m4_shift2($@)])
262
263
264
265# b4_parse_param_decl
266# -------------------
267# Extra formal arguments of the constructor.
268m4_define([b4_parse_param_decl],
269[m4_ifset([b4_parse_param],
270 [b4_remove_comma([$1],
271 b4_param_decls(b4_parse_param))],
272 [$1])])
273
274
275
276# b4_lex_param_call
277# -----------------
278# Delegating the lexer parameters to the lexer constructor.
279m4_define([b4_lex_param_call],
280 [m4_ifset([b4_lex_param],
281 [b4_remove_comma([$1],
282 b4_param_calls(b4_lex_param))],
283 [$1])])
284m4_define([b4_param_calls],
285 [m4_map([b4_param_call], [$@])])
286m4_define([b4_param_call], [, $2])
287
288
289
290# b4_parse_param_cons
291# -------------------
292# Extra initialisations of the constructor.
293m4_define([b4_parse_param_cons],
294 [m4_ifset([b4_parse_param],
295 [b4_constructor_calls(b4_parse_param)])])
296
297m4_define([b4_constructor_calls],
298 [m4_map([b4_constructor_call], [$@])])
299m4_define([b4_constructor_call],
300 [this.$2 = $2;
301 ])
302
303
304
305# b4_parse_param_vars
306# -------------------
307# Extra instance variables.
308m4_define([b4_parse_param_vars],
309 [m4_ifset([b4_parse_param],
310 [
311 /* User arguments. */
312b4_var_decls(b4_parse_param)])])
313
314m4_define([b4_var_decls],
315 [m4_map_sep([b4_var_decl], [
316], [$@])])
317m4_define([b4_var_decl],
318 [ protected final $1;])
319
320
321
322# b4_maybe_throws(THROWS)
323# -----------------------
324# Expand to either an empty string or "throws THROWS".
325m4_define([b4_maybe_throws],
326 [m4_ifval($1, [throws $1])])