63 lines
2.2 KiB
Ruby
63 lines
2.2 KiB
Ruby
class AntlrAT3 < Formula
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desc "Antlr3 has a C API which has been dropped in Antlr4"
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homepage "http://www.antlr.org/"
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url "http://www.antlr3.org/download/antlr-3.5.2-complete.jar"
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sha256 "26ca659f47d77384f518cf2b6463892fcd4f0b0d4d8c0de2addf697e63e7326b"
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bottle do
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cellar :any_skip_relocation
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sha256 "ed849f2435e121d0a0dbbbed4a027dd4f6f71db9a17a2f639bb1e492bdb1b7f0" => :high_sierra
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sha256 "450bb2d748965c0f25a280a2eb4fd9b371e6f403107053b610dedb030229009e" => :sierra
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sha256 "450bb2d748965c0f25a280a2eb4fd9b371e6f403107053b610dedb030229009e" => :el_capitan
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sha256 "450bb2d748965c0f25a280a2eb4fd9b371e6f403107053b610dedb030229009e" => :yosemite
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end
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depends_on :java
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def install
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libexec.install "antlr-3.5.2-complete.jar"
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(share+"java").install_symlink "#{libexec}/antlr-3.5.2-complete.jar" => "antlr3.jar"
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(bin+"antlr3").write <<~EOS
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#!/bin/sh
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java -jar #{libexec}/antlr-3.5.2-complete.jar "$@"
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EOS
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end
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test do
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exppath = testpath/"Exp.g"
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exppath.write <<~EOS
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grammar Exp;
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eval returns [double value]
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: exp=atomExp {$value = $exp.value;}
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;
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atomExp returns [double value]
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: n=Number {$value = Double.parseDouble($n.text);}
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;
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Number
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: ('0'..'9')+ ('.' ('0'..'9')+)?
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;
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WS
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: (' ' | '\\t' | '\\r'| '\\n') {\$channel=HIDDEN;}
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;
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EOS
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javapath = testpath/"ANTLRDemo.java"
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javapath.write <<~EOS
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import org.antlr.runtime.*;
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public class ANTLRDemo {
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public static void main(String[] args) throws Exception {
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ANTLRStringStream in = new ANTLRStringStream("42");
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ExpLexer lexer = new ExpLexer(in);
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CommonTokenStream tokens = new CommonTokenStream(lexer);
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ExpParser parser = new ExpParser(tokens);
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System.out.println(parser.eval()); // print the value
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}
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}
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EOS
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ENV.prepend "CLASSPATH", "#{share}/java/antlr3.jar", ":"
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ENV.prepend "CLASSPATH", ".", ":"
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system "#{bin}/antlr3", "Exp.g"
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system "javac", "ANTLRDemo.java"
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assert_match("42.0", pipe_output("java ANTLRDemo"))
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end
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end
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