support gperf 3.1

* tool/gperf.sed: extracted sed commands to a script.  ANSI-C code
  produced by gperf 3.1 declares length arguments as `size_t`.  it
  causes conflict with existing declarations, and needs casts for
  a local variable and return statements.
  [Feature #13883]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61076 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 22 insertions, 0 deletions

diff --git a/tool/gperf.sed b/tool/gperf.sed
new file mode 100644
index 0000000000..ed2196fee4
--- /dev/null
+++ b/tool/gperf.sed
@@ -0,0 +1,22 @@
+/ANSI-C code/{
+  h
+  s/.*/ANSI:offset:/
+  x
+}
+/^\/\*!ANSI\*\//{
+  G
+  s/^\/\*!ANSI\*\/\(.*\)\nANSI:.*/\/\*\1\*\//
+}
+s/(int)([a-z_]*)&((struct \([a-zA-Z_0-9][a-zA-Z_0-9]*\)_t *\*)0)->\1_str\([1-9][0-9]*\),/gperf_offsetof(\1, \2),/g
+/^#line/{
+  G
+  x
+  s/:offset:/:/
+  x
+  s/\(.*\)\(\n\).*:offset:.*/#define gperf_offsetof(s, n) (short)offsetof(struct s##_t, s##_str##n)\2\1/
+  s/\n[^#].*//
+}
+/^[a-zA-Z_0-9]*hash/,/^}/{
+  s/ hval = / hval = (unsigned int)/
+  s/ return / return (unsigned int)/
+}