# Simple calculator. -*- Autotest -*-
-# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
-# Foundation, Inc.
+# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+# 2008-2009 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
# _AT_DATA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
# -----------------------------------------------
-# Produce `calc.y'. Don't call this macro directly, because it contains
-# some occurrences of `$1' etc. which will be interpreted by m4. So
-# you should call it with $1, $2, and $3 as arguments, which is what
-# AT_DATA_CALC_Y does.
+# Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
+# `calc-lex.cc'.
+#
+# Don't call this macro directly, because it contains some occurrences
+# of `$1' etc. which will be interpreted by m4. So you should call it
+# with $1, $2, and $3 as arguments, which is what AT_DATA_CALC_Y does.
m4_define([_AT_DATA_CALC_Y],
[m4_if([$1$2$3], $[1]$[2]$[3], [],
[m4_fatal([$0: Invalid arguments: $@])])dnl
+m4_pushdef([AT_CALC_LEX],
+[[#include <ctype.h>
+
+int ]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[);
+static int get_char (]AT_LEX_FORMALS[);
+static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
+
+]AT_LOCATION_IF([
+static YYLTYPE last_yylloc;
+])[
+static int
+get_char (]AT_LEX_FORMALS[)
+{
+ int res = getc (input);
+ ]AT_USE_LEX_ARGS[;
+]AT_LOCATION_IF([
+ last_yylloc = AT_LOC;
+ if (res == '\n')
+ {
+ AT_LOC.last_line++;
+ AT_LOC.last_column = 1;
+ }
+ else
+ AT_LOC.last_column++;
+])[
+ return res;
+}
+
+static void
+unget_char (]AT_LEX_PRE_FORMALS[ int c)
+{
+ ]AT_USE_LEX_ARGS[;
+]AT_LOCATION_IF([
+ /* Wrong when C == `\n'. */
+ AT_LOC = last_yylloc;
+])[
+ ungetc (c, input);
+}
+
+static int
+read_signed_integer (]AT_LEX_FORMALS[)
+{
+ int c = get_char (]AT_LEX_ARGS[);
+ int sign = 1;
+ int n = 0;
+
+ ]AT_USE_LEX_ARGS[;
+ if (c == '-')
+ {
+ c = get_char (]AT_LEX_ARGS[);
+ sign = -1;
+ }
+
+ while (isdigit (c))
+ {
+ n = 10 * n + (c - '0');
+ c = get_char (]AT_LEX_ARGS[);
+ }
+
+ unget_char (]AT_LEX_PRE_ARGS[ c);
+
+ return sign * n;
+}
+
+
+/*---------------------------------------------------------------.
+| Lexical analyzer returns an integer on the stack and the token |
+| NUM, or the ASCII character read if not a number. Skips all |
+| blanks and tabs, returns 0 for EOF. |
+`---------------------------------------------------------------*/
+
+int
+]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[)
+{
+ static int init = 1;
+ int c;
+
+ if (init)
+ {
+ init = 0;
+]AT_LOCATION_IF([
+ AT_LOC.last_column = 1;
+ AT_LOC.last_line = 1;
+])[
+ }
+
+]AT_LOCATION_IF([
+ AT_LOC.first_column = AT_LOC.last_column;
+ AT_LOC.first_line = AT_LOC.last_line;
+])[
+
+ /* Skip white space. */
+ while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t')
+ {
+]AT_LOCATION_IF(
+[ AT_LOC.first_column = AT_LOC.last_column;
+ AT_LOC.first_line = AT_LOC.last_line;
+])[
+ }
+
+ /* process numbers */
+ if (c == '.' || isdigit (c))
+ {
+ unget_char (]AT_LEX_PRE_ARGS[ c);
+ ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
+ return NUM;
+ }
+
+ /* Return end-of-file. */
+ if (c == EOF)
+ return CALC_EOF;
+
+ /* Return single chars. */
+ return c;
+}
+]])
+
AT_DATA_GRAMMAR([calc.y],
[[/* Infix notation calculator--calc */
]$4
AT_SKEL_CC_IF(
[%define global_tokens_and_yystype])[
-%{
+%code requires {
+/* Exercise pre-prologue dependency to %union. */
+typedef int semantic_value;
+}
+
+/* Exercise %union. */
+%union
+{
+ semantic_value ival;
+};
+
+%code provides {
#include <stdio.h>
+/* The input. */
+extern FILE *input;]AT_SKEL_CC_IF([[
+#ifndef YYLTYPE
+# define YYLTYPE ]AT_NAME_PREFIX[::location
+#endif
+#define first_line begin.line
+#define first_column begin.column
+#define last_line end.line
+#define last_column end.column]])[
+}
+%code {
#include <stdlib.h>
#include <string.h>
#if HAVE_UNISTD_H
# undef alarm
# define alarm(seconds) /* empty */
#endif
-#include <ctype.h>
#define USE(Var)
-/* Exercise pre-prologue dependency to %union. */
-typedef int semantic_value;
-
+FILE *input;
static semantic_value global_result = 0;
static int global_count = 0;
-%}
-
-/* Exercise %union. */
-%union
-{
- semantic_value ival;
-};
-
-%{
static int power (int base, int exponent);
-]AT_SKEL_CC_IF(
-[#ifndef YYLTYPE
-[#] define YYLTYPE AT_NAME_PREFIX::location
-#endif
-#define first_line begin.line
-#define first_column begin.column
-#define last_line end.line
-#define last_column end.column
-],
+]AT_SKEL_CC_IF(,
[/* yyerror receives the location if:
- %location & %pure & %glr
- %location & %pure & %yacc & %parse-param. */
AT_PARAM_IF([semantic_value *result, int *count, ])
const char *s
);])[
-static int yylex (]AT_LEX_FORMALS[);
-static int get_char (]AT_LEX_FORMALS[);
-static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
-%}
+int yylex (]AT_LEX_FORMALS[);
+}
]AT_SKEL_CC_IF(
[/* The lalr1.cc skeleton, for backward compatibility, defines
| '-' exp %prec NEG { $$ = -$2; }
| exp '^' exp { $$ = power ($1, $3); }
| '(' exp ')' { $$ = $2; }
-| '(' error ')' { $$ = 1111; }
+| '(' error ')' { $$ = 1111; yyerrok; }
| '!' { $$ = 0; YYERROR; }
| '-' error { $$ = 0; YYERROR; }
;
%%
-/* The input. */
-static FILE *input;
]AT_SKEL_CC_IF(
[/* A C++ error reporting function. */
fprintf (stderr, "%s\n", s);
}])[
-
-]AT_LOCATION_IF([
-static YYLTYPE last_yylloc;
-])[
-static int
-get_char (]AT_LEX_FORMALS[)
-{
- int res = getc (input);
- ]AT_USE_LEX_ARGS[;
-]AT_LOCATION_IF([
- last_yylloc = AT_LOC;
- if (res == '\n')
- {
- AT_LOC.last_line++;
- AT_LOC.last_column = 1;
- }
- else
- AT_LOC.last_column++;
-])[
- return res;
-}
-
-
-static void
-unget_char (]AT_LEX_PRE_FORMALS[ int c)
-{
- ]AT_USE_LEX_ARGS[;
-]AT_LOCATION_IF([
- /* Wrong when C == `\n'. */
- AT_LOC = last_yylloc;
-])[
- ungetc (c, input);
-}
-
-static int
-read_signed_integer (]AT_LEX_FORMALS[)
-{
- int c = get_char (]AT_LEX_ARGS[);
- int sign = 1;
- int n = 0;
-
- ]AT_USE_LEX_ARGS[;
- if (c == '-')
- {
- c = get_char (]AT_LEX_ARGS[);
- sign = -1;
- }
-
- while (isdigit (c))
- {
- n = 10 * n + (c - '0');
- c = get_char (]AT_LEX_ARGS[);
- }
-
- unget_char (]AT_LEX_PRE_ARGS[ c);
-
- return sign * n;
-}
-
-
-
-/*---------------------------------------------------------------.
-| Lexical analyzer returns an integer on the stack and the token |
-| NUM, or the ASCII character read if not a number. Skips all |
-| blanks and tabs, returns 0 for EOF. |
-`---------------------------------------------------------------*/
-
-static int
-yylex (]AT_LEX_FORMALS[)
-{
- static int init = 1;
- int c;
-
- if (init)
- {
- init = 0;
-]AT_LOCATION_IF([
- AT_LOC.last_column = 1;
- AT_LOC.last_line = 1;
-])[
- }
-
-]AT_LOCATION_IF([
- AT_LOC.first_column = AT_LOC.last_column;
- AT_LOC.first_line = AT_LOC.last_line;
-])[
-
- /* Skip white space. */
- while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t')
- {
-]AT_LOCATION_IF(
-[ AT_LOC.first_column = AT_LOC.last_column;
- AT_LOC.first_line = AT_LOC.last_line;
-])[
- }
-
- /* process numbers */
- if (c == '.' || isdigit (c))
- {
- unget_char (]AT_LEX_PRE_ARGS[ c);
- ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
- return NUM;
- }
-
- /* Return end-of-file. */
- if (c == EOF)
- return CALC_EOF;
-
- /* Return single chars. */
- return c;
-}
+]AT_DEFINES_IF(, [AT_CALC_LEX])[
static int
power (int base, int exponent)
return status;
}
]])
+AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
+[[#include "calc.h]AT_SKEL_CC_IF([[h]])["
+
+]AT_CALC_LEX])])
+m4_popdef([AT_CALC_LEX])
])# _AT_DATA_CALC_Y
# AT_DATA_CALC_Y([BISON-OPTIONS])
# -------------------------------
-# Produce `calc.y'.
+# Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
+# `calc-lex.cc'.
m4_define([AT_DATA_CALC_Y],
[_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
])
AT_BISON_OPTION_PUSHDEFS([$1])
AT_DATA_CALC_Y([$1])
-
-AT_SKEL_CC_IF(
- [AT_CHECK([bison -o calc.cc calc.y])
- AT_COMPILE_CXX([calc])],
- [AT_CHECK([bison -o calc.c calc.y])
- AT_COMPILE([calc])])
+AT_FULL_COMPILE([calc], [AT_DEFINES_IF([[lex]])])
# Test the priorities.
_AT_CHECK_CALC([$1],
[1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
1.12: syntax error, unexpected number
calc: error: 2222 != 1])
+
+# Check that yyerrok works properly: second error is not reported,
+# third and fourth are. Parse status is succesfull.
+_AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
+[1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
+1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
+1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
+
AT_BISON_OPTION_POPDEFS
AT_CLEANUP
projects / bison.git / blobdiff