# Simple calculator. -*- Autotest -*-
-# Copyright (C) 2000-2010 Free Software Foundation, Inc.
+# Copyright (C) 2000-2012 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
last_yylloc = AT_LOC;
if (res == '\n')
{
- AT_LOC.last_line++;
- AT_LOC.last_column = 1;
+ AT_LOC_LAST_LINE++;
+ AT_LOC_LAST_COLUMN = 1;
}
else
- AT_LOC.last_column++;
+ AT_LOC_LAST_COLUMN++;
])[
return res;
}
{
init = 0;
]AT_LOCATION_IF([
- AT_LOC.last_column = 1;
- AT_LOC.last_line = 1;
+ 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')
+ /* Skip current token, then white spaces. */
+ do
{
]AT_LOCATION_IF(
-[ AT_LOC.first_column = AT_LOC.last_column;
- AT_LOC.first_line = AT_LOC.last_line;
+[ AT_LOC_FIRST_COLUMN = AT_LOC_LAST_COLUMN;
+ AT_LOC_FIRST_LINE = AT_LOC_LAST_LINE;
])[
}
+ while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t');
/* process numbers */
if (c == '.' || isdigit (c))
[%define global_tokens_and_yystype])[
%code requires
{
-/* Exercise pre-prologue dependency to %union. */
-typedef int semantic_value;
+]AT_LOCATION_TYPE_IF([[
+# include <iostream>
+ struct Point
+ {
+ int l;
+ int c;
+ };
+
+ struct Span
+ {
+ Point first;
+ Point last;
+ };
+
+# define YYLLOC_DEFAULT(Current, Rhs, N) \
+ do \
+ if (N) \
+ { \
+ (Current).first = YYRHSLOC (Rhs, 1).first; \
+ (Current).last = YYRHSLOC (Rhs, N).last; \
+ } \
+ else \
+ { \
+ (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last; \
+ } \
+ while (false)
+
+]])[
+ /* Exercise pre-prologue dependency to %union. */
+ typedef int semantic_value;
}
/* Exercise %union. */
/* The input. */
extern FILE *input;]AT_SKEL_CC_IF([[
#ifndef YYLTYPE
-# define YYLTYPE ]AT_NAME_PREFIX[::location
+# define YYLTYPE ]AT_NAME_PREFIX[::parser::location_type
#endif
-#define first_line begin.line
-#define first_column begin.column
-#define last_line end.line
-#define last_column end.column]])[
+]])[
}
%code
{
+#include <assert.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_UNISTD_H
static semantic_value global_result = 0;
static int global_count = 0;
static int power (int base, int exponent);
+
]AT_SKEL_CC_IF(,
[/* yyerror receives the location if:
- %location & %pure & %glr
int yylex (]AT_LEX_FORMALS[);
}
-]AT_SKEL_CC_IF(
-[/* The lalr1.cc skeleton, for backward compatibility, defines
+]AT_SKEL_CC_IF([AT_LOCATION_TYPE_IF([], [
+/* The lalr1.cc skeleton, for backward compatibility, defines
a constructor for position that initializes the filename. The
glr.cc skeleton does not (and in fact cannot: location/position
are stored in a union, from which objects with constructors are
excluded in C++. */
%initial-action {
- @$.initialize (0);
+ @$.initialize ();
}
-])[
+])])[
/* Bison Declarations */
%token CALC_EOF 0 "end of input"
%%
]AT_SKEL_CC_IF(
-[/* A C++ error reporting function. */
+[AT_LOCATION_TYPE_IF([[
+ std::ostream&
+ operator<< (std::ostream& o, const Span& s)
+ {
+ o << s.first.l << '.' << s.first.c;
+ if (s.first.l != s.last.l)
+ o << '-' << s.last.l << '.' << s.last.c - 1;
+ else if (s.first.c != s.last.c - 1)
+ o << '-' << s.last.c - 1;
+ return o;
+ }
+]])
+
+/* A C++ error reporting function. */
void
-AT_NAME_PREFIX::parser::error (const location& l, const std::string& m)
+AT_NAME_PREFIX::parser::error (const location_type& l, const std::string& m)
{
(void) l;
std::cerr << AT_LOCATION_IF([l << ": " << ])m << std::endl;
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)
+ 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)
+ 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);
+ AT_LOC_LAST_COLUMN - 1);
fprintf (stderr, ": ");])
fprintf (stderr, "%s\n", s);
}])[
power (int base, int exponent)
{
int res = 1;
- if (exponent < 0)
- exit (3);
+ assert (0 <= exponent);
for (/* Niente */; exponent; --exponent)
res *= base;
return res;
]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
[ yydebug = 1;])])[
status = yyparse (]AT_PARAM_IF([[&result, &count]])[);
- fclose (input);
+ if (fclose (input))
+ perror ("fclose");
if (global_result != result)
abort ();
if (global_count != count)
AT_CHECK_CALC_LALR([%defines])
AT_CHECK_CALC_LALR([%locations])
+
AT_CHECK_CALC_LALR([%name-prefix="calc"]) dnl test deprecated `='
AT_CHECK_CALC_LALR([%verbose])
AT_CHECK_CALC_LALR([%yacc])
[AT_CHECK_CALC([%language "C++" %defines %locations] $@)])
AT_CHECK_CALC_LALR1_CC([])
+AT_CHECK_CALC_LALR1_CC([%define location_type Span])
AT_CHECK_CALC_LALR1_CC([%error-verbose %name-prefix "calc" %verbose %yacc])
-
AT_CHECK_CALC_LALR1_CC([%error-verbose %debug %name-prefix "calc" %verbose %yacc])
AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %name-prefix "calc" %verbose %yacc])
[AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])
AT_CHECK_CALC_GLR_CC([])
+AT_CHECK_CALC_GLR_CC([%define location_type Span])
AT_CHECK_CALC_GLR_CC([%error-verbose %name-prefix "calc" %verbose %yacc])
AT_CHECK_CALC_GLR_CC([%debug])
projects / bison.git / blobdiff