60 lines
1.8 KiB
Ruby
60 lines
1.8 KiB
Ruby
class Bison < Formula
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desc "Parser generator"
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homepage "https://www.gnu.org/software/bison/"
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# X.Y.9Z are beta releases that sometimes get accidentally uploaded to the release FTP
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url "https://ftp.gnu.org/gnu/bison/bison-3.7.4.tar.xz"
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mirror "https://ftpmirror.gnu.org/bison/bison-3.7.4.tar.xz"
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sha256 "a3b5813f48a11e540ef26f46e4d288c0c25c7907d9879ae50e430ec49f63c010"
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license "GPL-3.0-or-later"
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version_scheme 1
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livecheck do
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url :stable
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end
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bottle do
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sha256 "b7a25d5b1a69dd214d31304edb008d378b9de7dfd026d04b2843786c9af88118" => :big_sur
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sha256 "6252edf4d591cf1de3e94e9e08c5986205593da971d0b381a411d272c95cf30f" => :catalina
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sha256 "50a80771867419e621404f94ff89cab629fd1aff69bdb68a473fd41a233d00a2" => :mojave
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sha256 "b0015c5773c569e7de673bc2159f0c86d50422bc4fcf06de66f6bac1fe1f06c5" => :high_sierra
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end
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keg_only :provided_by_macos
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uses_from_macos "m4"
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def install
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system "./configure", "--disable-dependency-tracking",
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"--prefix=#{prefix}"
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system "make", "install"
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end
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test do
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(testpath/"test.y").write <<~EOS
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%{ #include <iostream>
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using namespace std;
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extern void yyerror (char *s);
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extern int yylex ();
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%}
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%start prog
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%%
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prog: // empty
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| prog expr '\\n' { cout << "pass"; exit(0); }
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;
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expr: '(' ')'
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| '(' expr ')'
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| expr expr
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;
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%%
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char c;
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void yyerror (char *s) { cout << "fail"; exit(0); }
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int yylex () { cin.get(c); return c; }
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int main() { yyparse(); }
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EOS
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system "#{bin}/bison", "test.y"
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system ENV.cxx, "test.tab.c", "-o", "test"
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assert_equal "pass", shell_output("echo \"((()(())))()\" | ./test")
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assert_equal "fail", shell_output("echo \"())\" | ./test")
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end
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end
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