doc: mfcalc: demonstrate %printer.

[bison.git] / tests / calc.at

diff --git a/tests/calc.at b/tests/calc.at
index ee0efe1f0b84d8dec6e2a1dae9a30db771776067..c50400836a5ad684ce0443db4643ac877a0aec2f 100644 (file)
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -1,6 +1,6 @@
 # Simple calculator.                         -*- Autotest -*-
 
 # 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
 
 # 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


@@ -55,11 +55,11 @@ get_char (]AT_LEX_FORMALS[)
   last_yylloc = AT_LOC;
   if (res == '\n')
     {
   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
     }
   else

-    AT_LOC.last_column++;
+    AT_LOC_LAST_COLUMN++;

 ])[
   return res;
 }
 ])[
   return res;
 }


@@ -117,24 +117,20 @@ int
     {
       init = 0;
 ]AT_LOCATION_IF([
     {
       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_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))
 
   /* process numbers   */
   if (c == '.' || isdigit (c))


@@ -160,7 +156,7 @@ AT_SKEL_CC_IF(
 [%define global_tokens_and_yystype])[
 %code requires
 {
 [%define global_tokens_and_yystype])[
 %code requires
 {

-]AT_LOCATION_TYPE_IF([
+]AT_LOCATION_TYPE_IF([[

 # include <iostream>
   struct Point
   {
 # include <iostream>
   struct Point
   {


@@ -170,10 +166,24 @@ AT_SKEL_CC_IF(
 
   struct Span
   {
 
   struct Span
   {

-    Point begin;
-    Point end;
+    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 pre-prologue dependency to %union.  */
   typedef int semantic_value;
 }


@@ -192,21 +202,12 @@ extern FILE *input;]AT_SKEL_CC_IF([[
 #ifndef YYLTYPE
 # define YYLTYPE ]AT_NAME_PREFIX[::parser::location_type
 #endif
 #ifndef YYLTYPE
 # define YYLTYPE ]AT_NAME_PREFIX[::parser::location_type
 #endif

-]AT_LOCATION_TYPE_IF([[
-  #define first_line   begin.l
-  #define first_column begin.c
-  #define last_line    end.l
-  #define last_column  end.c
-]], [[
-  #define first_line   begin.line
-  #define first_column begin.column
-  #define last_line    end.line
-  #define last_column  end.column
-]])])[
+]])[

 }
 
 %code
 {
 }
 
 %code
 {

+#include <assert.h>

 #include <stdlib.h>
 #include <string.h>
 #if HAVE_UNISTD_H
 #include <stdlib.h>
 #include <string.h>
 #if HAVE_UNISTD_H


@@ -221,6 +222,7 @@ FILE *input;
 static semantic_value global_result = 0;
 static int global_count = 0;
 static int power (int base, int exponent);
 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
 ]AT_SKEL_CC_IF(,
 [/* yyerror receives the location if:
    - %location & %pure & %glr


@@ -239,7 +241,7 @@ int yylex (]AT_LEX_FORMALS[);
    are stored in a union, from which objects with constructors are
    excluded in C++. */
 %initial-action {
    are stored in a union, from which objects with constructors are
    excluded in C++. */
 %initial-action {

-  @$.initialize (0);
+  @$.initialize ();

 }
 ])])[
 
 }
 ])])[
 


@@ -292,11 +294,11 @@ exp:
   std::ostream&
   operator<< (std::ostream& o, const Span& s)
   {
   std::ostream&
   operator<< (std::ostream& o, const Span& s)
   {

-    o << s.begin.l << '.' << s.begin.c;
-    if (s.begin.l != s.end.l)
-      o << '-' << s.end.l << '.' << s.end.c - 1;
-    else if (s.begin.c != s.end.c - 1)
-      o << '-' << s.end.c - 1;
+    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;
   }
 ]])
     return o;
   }
 ]])


@@ -329,13 +331,13 @@ yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
 AT_PARAM_IF([(void) result; (void) count;])
 AT_YYERROR_SEES_LOC_IF([
   fprintf (stderr, "%d.%d",
 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",
     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",
     fprintf (stderr, "-%d",

-            AT_LOC.last_column - 1);
+            AT_LOC_LAST_COLUMN - 1);

   fprintf (stderr, ": ");])
   fprintf (stderr, "%s\n", s);
 }])[
   fprintf (stderr, ": ");])
   fprintf (stderr, "%s\n", s);
 }])[


@@ -346,8 +348,7 @@ static int
 power (int base, int exponent)
 {
   int res = 1;
 power (int base, int exponent)
 {
   int res = 1;

-  if (exponent < 0)
-    exit (3);
+  assert (0 <= exponent);

   for (/* Niente */; exponent; --exponent)
     res *= base;
   return res;
   for (/* Niente */; exponent; --exponent)
     res *= base;
   return res;


@@ -711,6 +712,7 @@ m4_define([AT_CHECK_CALC_GLR_CC],
 [AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])
 
 AT_CHECK_CALC_GLR_CC([])
 [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])
 AT_CHECK_CALC_GLR_CC([%error-verbose %name-prefix "calc" %verbose %yacc])
 
 AT_CHECK_CALC_GLR_CC([%debug])