45 lines
1.6 KiB
Ruby
45 lines
1.6 KiB
Ruby
class Lemon < Formula
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desc "LALR(1) parser generator like yacc or bison"
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homepage "https://www.hwaci.com/sw/lemon/"
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url "https://tx97.net/pub/distfiles/lemon-1.69.tar.bz2"
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sha256 "bc7c1cae233b6af48f4b436ee900843106a15bdb1dc810bc463d8c6aad0dd916"
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bottle do
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sha256 "ba917fc3f6df28ea62f91bdd45cbe4c43dd8148c2573fc263cd1bcfcb7915a6e" => :mojave
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sha256 "b01253f24f206fb1a1e76656ec4c9f43d3132d8dcaaa60708d1478e0a3546a12" => :high_sierra
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sha256 "54fc18e48b3e9bfa4e14317158e3aef097d075bc3819d6424cb5b48a5845a7d8" => :sierra
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sha256 "9016fa354fa9f34abf2db3cdca2e13a6dd6223534ff9ea08001ddaff053fe446" => :el_capitan
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sha256 "e9b8328c8d905424be43404911bff1296c16fbdd83ecfeab7b51917f31c81ab7" => :yosemite
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sha256 "a8120db2de1708f3ecd4bddc5775f90cf5c39a55010a90d01b8cd5f58325560e" => :mavericks
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end
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def install
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pkgshare.install "lempar.c"
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# patch the parser generator to look for the 'lempar.c' template file where we've installed it
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inreplace "lemon.c", / = pathsearch\([^)]*\);/, " = \"#{pkgshare}/lempar.c\";"
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system ENV.cc, "-o", "lemon", "lemon.c"
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bin.install "lemon"
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end
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test do
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(testpath/"gram.y").write <<~EOS
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%token_type {int}
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%left PLUS.
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%include {
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#include <iostream>
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#include "example1.h"
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}
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%syntax_error {
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std::cout << "Syntax error!" << std::endl;
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}
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program ::= expr(A). { std::cout << "Result=" << A << std::endl; }
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expr(A) ::= expr(B) PLUS expr(C). { A = B + C; }
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expr(A) ::= INTEGER(B). { A = B; }
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EOS
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system "#{bin}/lemon", "gram.y"
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assert_predicate testpath/"gram.c", :exist?
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end
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end
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