build: fix VPATH issue

[bison.git] / tests / headers.at

diff --git a/tests/headers.at b/tests/headers.at
index e1e74f5ea48b640ca228b9a7b67f6899b782dddf..6be1c7a64d0e4abc06af01667aef9aa8dbccff28 100644 (file)
--- a/tests/headers.at
+++ b/tests/headers.at
@@ -124,15 +124,17 @@ AT_CLEANUP
 
 AT_SETUP([Several parsers])
 
-# AT_DATA_GRAMMAR_SEVERAL([PREFIX], [DIRECTIVES])
-# -----------------------------------------------
-# Generate and compile to *.o.  Make sure there is no YY* nor yy* in
-# the header (but YYDEBUG and YYPARSE_PARAM).
-m4_define([AT_DATA_GRAMMAR_SEVERAL],
+# AT_TEST([PREFIX], [DIRECTIVES])
+# -------------------------------
+# Generate and compile to *.o.  Make sure there is no (allowed) YY*
+# nor yy* identifiers in the header.  Check that headers are
+# self-contained, and can be compiled by a C++ compiler.
+m4_pushdef([AT_TEST],
 [AT_BISON_OPTION_PUSHDEFS([%define api.prefix "$1_" $2])
-AT_DATA_GRAMMAR([$1.AT_SKEL_CC_IF([yy], [y])],
+AT_DATA_GRAMMAR([$1.y],
 [[%define api.prefix "$1_"
 $2
+%error-verbose
 %union
 {
   int integer;
@@ -150,6 +152,8 @@ exp:
 | 'x' '4' { printf ("x4\n"); }
 | 'x' '5' { printf ("x5\n"); }
 | 'x' '6' { printf ("x6\n"); }
+| 'x' '7' { printf ("x7\n"); }
+| 'x' '8' { printf ("x8\n"); }
 ;
 
 %%
@@ -157,63 +161,118 @@ exp:
 ]AT_YYLEX_DEFINE(["$1"])[
 ]])
 
-AT_BISON_CHECK([-d -o AT_SKEL_CC_IF([$1.cc $1.yy], [$1.c $1.y])])
-# C++ output relies on namespaces and still uses yy a lot.
-AT_SKEL_CC_IF([],
-  [AT_CHECK([$EGREP -i yy $1.h | $EGREP -v 'YY(DEBUG|PARSE_PARAM)'], [1])])
+AT_BISON_CHECK([-d -o $1.AT_SKEL_CC_IF([cc], [c]) $1.y])
+
 AT_LANG_COMPILE([$1.o])
+AT_CHECK([[echo "$1" >>expout]])
+
 AT_BISON_OPTION_POPDEFS
-])
+])# AT_TEST
 
 AT_DATA([main.cc],
 [AT_DATA_SOURCE_PROLOGUE
-[extern "C"
+[// If we are compiling with CC=$CXX, then do not load the C headers
+// inside extern "C", since they were _not_ compiled this way.
+#if ! CC_IS_CXX
+extern "C"
 {
+#endif
   #include "x1.h"
   #include "x2.h"
   #include "x3.h"
   #include "x4.h"
+  #include "x6.h"
+  #include "x7.h"
+  #include "x8.h"
+#if ! CC_IS_CXX
 }
+#endif
 #include "x5.hh"
 //#include "x6.hh"
 
-#define ECHO(S) std::cerr << #S": " << S << std::endl;
+#define RUN(S)                                  \
+  do {                                          \
+    int res = S;                                \
+    if (res)                                    \
+      std::cerr << #S": " << res << std::endl;  \
+  } while (false)
 
 int
 main (void)
 {
-  ECHO(x1_parse());
-  ECHO(x2_parse());
-  ECHO(x3_parse());
-  ECHO(x4_parse());
+  RUN(x1_parse());
+  RUN(x2_parse());
+  RUN(x3_parse());
+  RUN(x4_parse());
   x5_::parser p5;
-  ECHO(p5.parse());
+  RUN(p5.parse());
+  RUN(x6_parse());
+  RUN(x7_parse());
+  RUN(x8_parse());
 //  x6_::parser p6;
-//  ECHO(p6.parse());
+//  RUN(p6.parse());
   return 0;
 }
-]])
-
-AT_DATA_GRAMMAR_SEVERAL([x1], [])
-AT_DATA_GRAMMAR_SEVERAL([x2], [%locations %debug])
-AT_DATA_GRAMMAR_SEVERAL([x3], [%glr-parser])
-AT_DATA_GRAMMAR_SEVERAL([x4], [%locations %debug %glr-parser])
-AT_DATA_GRAMMAR_SEVERAL([x5], [%locations %debug %language "c++"])
-#AT_DATA_GRAMMAR_SEVERAL([x5], [%locations %language "c++" %glr-parser])
-
-AT_COMPILE_CXX([parser], [x1.o x2.o x3.o x4.o x5.o main.cc])
-AT_CHECK([./parser], [0],
-[[x1
-x2
-x3
-x4
-x5
-]],
-[[x1_parse(): 0
-x2_parse(): 0
-x3_parse(): 0
-x4_parse(): 0
-p5.parse(): 0
-]])
+]])# main.cc
+
+AT_TEST([x1], [])
+AT_TEST([x2], [%locations %debug])
+AT_TEST([x3], [%glr-parser])
+AT_TEST([x4], [%locations %debug %glr-parser])
+AT_TEST([x5], [%locations %debug %language "c++"])
+AT_TEST([x6], [%define api.pure])
+AT_TEST([x7], [%define api.push-pull both])
+AT_TEST([x8], [%define api.pure %define api.push-pull both])
+#AT_TEST([x5], [%locations %language "c++" %glr-parser])
+
+# Check there is no 'yy' left.
+# C++ output relies on namespaces and still uses yy a lot.
+#
+# Check there is no 'YY' left.
+# Ignore comments, YYChar (template parameter), YYPUSH_MORE(_DEFINED)?
+# (constant definition), YY_\w+_INCLUDED (header guards).
+# YYDEBUG (not renamed) can be read, but not changed.
+AT_CHECK([[$PERL -n -0777 -e '
+  s{/\*.*?\*/}{}gs;
+  s{//.*}{}g;
+  s{\b(YYChar
+      |YYPUSH_MORE(_DEFINED)?
+      |YY_\w+_INCLUDED
+      |YY_NULL
+      |(defined|if)\ YYDEBUG
+      )\b}{}gx;
+  while (/^(.*YY.*)$/gm)
+  {
+    print "$ARGV: invalid exported YY: $1\n";
+  }
+  if ($ARGV =~ /\.h$/)
+  {
+    while (/^(.*yy.*)$/gm)
+    {
+      print "$ARGV: invalid exported yy: $1\n";
+    }
+  }
+' -- *.hh *.h]])
+
+# Check that the headers are self-contained, and protected against
+# multiple inclusions.  While at it, check they are sane for C++.
+for h in *.h *.hh
+do
+  # No shell expansion with AT_DATA.
+  cat >$h.cc <<EOF
+AT_DATA_SOURCE_PROLOGUE
+#include "$h"
+#include "$h"
+EOF
+  AT_COMPILE_CXX([$h.o])
+done
+
+# Do this late, so that other checks have been performed.
+AT_SKIP_IF_CANNOT_LINK_C_AND_CXX
+
+AT_COMPILE_CXX([parser], [[x[1-8].o -DCC_IS_CXX=$CC_IS_CXX main.cc]])
+AT_PARSER_CHECK([./parser], [0], [[expout]])
+
+m4_popdef([AT_TEST])
 
 AT_CLEANUP