FILE *input;
static int power (int base, int exponent);
-]AT_SKEL_CC_IF(,
-[static void yyerror (AT_YYERROR_ARG_LOC_IF([AT_YYLTYPE *llocp, ])
- AT_PARAM_IF([semantic_value *result, int *count, ])
- const char *s
- );])[
+]AT_YYERROR_DECLARE[
]AT_YYLEX_DECLARE_EXTERN[
}
o << '-' << s.last.c - 1;
return o;
}
-]])
-AT_YYERROR_DEFINE],
-[/* A C error reporting function. */
-static void
-yyerror (AT_YYERROR_ARG_LOC_IF([AT_YYLTYPE *llocp, ])
- AT_PARAM_IF([semantic_value *result, int *count, ])
- const char *s)
-{
-AT_PARAM_IF([(void) result; (void) count;])
-AT_YYERROR_SEES_LOC_IF([
- fprintf (stderr, "%d.%d",
- AT_LOC_FIRST_LINE, AT_LOC_FIRST_COLUMN);
- if (AT_LOC_FIRST_LINE != AT_LOC_LAST_LINE)
- fprintf (stderr, "-%d.%d",
- AT_LOC_LAST_LINE, AT_LOC_LAST_COLUMN - 1);
- else if (AT_LOC_FIRST_COLUMN != AT_LOC_LAST_COLUMN - 1)
- fprintf (stderr, "-%d",
- AT_LOC_LAST_COLUMN - 1);
- fprintf (stderr, ": ");])
- fprintf (stderr, "%s\n", s);
-}])[
+]])])[
+]AT_YYERROR_DEFINE[
]AT_DEFINES_IF([],
[AT_CALC_LEX
AT_CALC_MAIN])])
[m4_bmatch([$3], [%language "[Cc]\+\+"\|%skeleton "[a-z0-9]+\.cc"], [$1], [$2])])
m4_pushdef([AT_SKEL_JAVA_IF],
[m4_bmatch([$3], [%language "[Jj][Aa][Vv][Aa]"\|%skeleton "[a-z0-9]+\.java"], [$1], [$2])])
+# The target language: "c", "c++", or "java".
m4_pushdef([AT_LANG],
[AT_SKEL_JAVA_IF([java],
[AT_SKEL_CC_IF([c++],
[m4_bmatch([$3], [%define location_type], [$1], [$2])])
m4_pushdef([AT_PARAM_IF],
[m4_bmatch([$3], [%parse-param], [$1], [$2])])
+# Comma-terminated list of formals parse-parameters.
+# E.g., %parse-param { int x } {int y} -> "int x, int y, ".
+m4_pushdef([AT_PARSE_PARAMS])
+m4_bpatsubst([$3], [%parse-param { *\([^{}]*[^{} ]\) *}],
+ [m4_append([AT_PARSE_PARAMS], [\1, ])])
+
m4_pushdef([AT_PURE_IF],
[m4_bmatch([$3], [%define *api\.pure\|%pure-parser],
[m4_bmatch([$3], [%define *api\.pure *"?false"?], [$2], [$1])],
m4_popdef([AT_PURE_AND_LOC_IF])
m4_popdef([AT_LOCATION_TYPE_IF])
m4_popdef([AT_LOCATION_IF])
+m4_popdef([AT_PARSE_PARAMS])
m4_popdef([AT_PARAM_IF])
m4_popdef([AT_LEXPARAM_IF])
m4_popdef([AT_YACC_IF])
# Must be called inside a AT_BISON_OPTION_PUSHDEFS/POPDEFS pair.
m4_define([AT_YYERROR_FORMALS],
[m4_case(AT_LANG,
-[c], [AT_YYERROR_ARG_LOC_IF([AT_YYLTYPE *llocp, ])[const char *msg]])[]dnl
+[c], [AT_YYERROR_ARG_LOC_IF([AT_YYLTYPE *llocp, ])AT_PARSE_PARAMS [const char *msg]])[]dnl
])
m4_define([AT_YYERROR_PROTOTYPE],
/* A C error reporting function. */
static
]AT_YYERROR_PROTOTYPE[
-{
-]AT_YYERROR_SEES_LOC_IF([[
+{]m4_bpatsubst(m4_defn([AT_PARSE_PARAMS]),
+ [[^,]+[^A-Za-z_0-9]\([A-Za-z_][A-Za-z_0-9]*\), *], [
+ YYUSE(\1);])dnl
+AT_YYERROR_SEES_LOC_IF([[
fprintf (stderr, "%d.%d",
]AT_LOC_FIRST_LINE[, ]AT_LOC_FIRST_COLUMN[);
if (]AT_LOC_FIRST_LINE[ != ]AT_LOC_LAST_LINE[)
m4_pushdef([AT_TEST],
[AT_SETUP([[Lex and parse params: $1]])
-AT_BISON_OPTION_PUSHDEFS([%locations %skeleton $1])
+AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1" %parse-param { int x } %parse-param { int y }])
## FIXME: Improve parsing of parse-param and use the generated
## yyerror.
AT_DATA_GRAMMAR([input.y],
[[%defines
%locations
-%skeleton $1
+%skeleton "$1"
%union { int ival; }
%parse-param { int x }
// Spaces, tabs, and new lines.
#include <stdio.h>
#include <stdlib.h>
-]AT_SKEL_CC_IF([], [[
-static
-void
-yyerror (int x, int y, const char *msg)
-{
- fprintf (stderr, "x: %d, y: %d, %s\n", x, y, msg);
-}]])[
-
+ ]AT_YYERROR_DECLARE[
]AT_YYLEX_DECLARE[
%}
%%
exp: 'a' { fprintf (stdout, "x: %d, y: %d\n", x, y); };
%%
+]AT_YYERROR_DEFINE[
]AT_YYLEX_DEFINE(["a"])[
]AT_SKEL_CC_IF(
-[AT_YYERROR_DEFINE
-
-int
+[int
yyparse (int x, int y)
{
yy::parser parser(x, y);
])
## FIXME: test Java, and iterate over skeletons.
-AT_TEST("yacc.c")
-AT_TEST("glr.c")
-AT_TEST("lalr1.cc")
-AT_TEST("glr.cc")
+AT_TEST([yacc.c])
+AT_TEST([glr.c])
+AT_TEST([lalr1.cc])
+AT_TEST([glr.cc])
m4_popdef([AT_TEST])