Add intellij-erlang to local and travis-ci builds

intellij-erlang's erlang.jar is necessary to access PSI classes
generated by intellij-erlang, but I don't want to check in their jar to
this repo, so I'll let ant get the jar.

.travis.yml

@@ -6,6 +6,6 @@ language: elixir
 before_install:
 - "export DISPLAY=:99.0"
 - "sh -e /etc/init.d/xvfb start"
-install: ant -logger org.apache.tools.ant.listener.AnsiColorLogger -f intellij-elixir.xml get.idea release.intellij_elixir
+install: ant -logger org.apache.tools.ant.listener.AnsiColorLogger -f intellij-elixir.xml get.idea get.intellij-erlang release.intellij_elixir
 script:  ant -logger org.apache.tools.ant.listener.AnsiColorLogger -f intellij-elixir.xml test.modules
 sudo: false

Makefile

@@ -4,7 +4,7 @@ TARGET_XML=intellij-elixir.xml
 all: install test build
 
 install:
-	${ANT} -logger org.apache.tools.ant.listener.AnsiColorLogger -f ${TARGET_XML} get.idea release.intellij_elixir 
+	${ANT} -logger org.apache.tools.ant.listener.AnsiColorLogger -f ${TARGET_XML} get.idea get.intellij-erlang release.intellij_elixir
 
 build:
 	${ANT} -logger org.apache.tools.ant.listener.AnsiColorLogger -f ${TARGET_XML} build.modules

intellij-elixir.iml

@@ -5,10 +5,10 @@
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/gen" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/testData" type="java-test-resource" />
       <sourceFolder url="file://$MODULE_DIR$/res" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/gen" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/bin" />
       <excludeFolder url="file://$MODULE_DIR$/cache" />
       <excludeFolder url="file://$MODULE_DIR$/dependencies" />
@@ -33,5 +33,6 @@
     <orderEntry type="library" name="junit-4.11" level="project" />
     <orderEntry type="module" module-name="jps-shared" />
     <orderEntry type="module" module-name="jps-builder" />
+    <orderEntry type="library" scope="PROVIDED" name="erlang" level="project" />
   </component>
-</module>
+</module>

intellij-elixir.xml

@@ -57,6 +57,7 @@
   </patternset>
 
   <import file="${basedir}/idea.xml"/>
+  <import file="${basedir}/intellij-erlang.xml"/>
 
   <!-- JDK definitions -->
   <exec executable="elixir" outputproperty="elixir.code.lib.dir">
@@ -171,6 +172,9 @@
       <include name="lib/xpp3-1.1.4-min.jar"/>
       <include name="lib/xstream-1.4.3.jar"/>
     </fileset>
+    <fileset dir="${intellij-erlang.cache}">
+      <include name="lib/erlang.jar"/>
+    </fileset>
     <fileset dir="${basedir}/tests">
       <include name="mockito-core-2.0.7-beta.jar"/>
       <include name="objenesis.jar"/>

intellij-erlang.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project default="get.intellij-erlang" name="intellij-erlang">
+    <dirname property="intellij-erlang.basedir" file="${ant.file.intellij-erlang}"/>
+
+    <property name="intellij-erlang.output.dir" value="${intellij-erlang.basedir}/dependencies/intellij-erlang"/>
+    <property name="intellij-erlang.release" value="778"/>
+    <property name="intellij-erlang.zip" value="Erlang.${intellij-erlang.release}.zip"/>
+    <property name="intellij-erlang.cache" value="${intellij-erlang.basedir}/cache/intellij-erlang"/>
+    <property name="intellij-erlang.zip.root.basename" value="Erlang"/>
+
+    <property name="intellij-erlang.output.zip.root.dir" value="${intellij-erlang.output.dir}/${intellij-erlang.zip.root.basename}"/>
+    <available file="${intellij-erlang.output.zip.root.dir}" property="intellij-erlang.output.zip.root.available"/>
+
+    <available file="${intellij-erlang.output.dir}/${intellij-erlang.zip}" property="intellij-erlang.zip.available"/>
+
+    <target name="clean.intellij-erlang">
+        <delete quiet="true">
+            <fileset dir="${intellij-erlang.output.dir}"/>
+            <fileset dir="${intellij-erlang.cache}"/>
+        </delete>
+    </target>
+
+    <target name="get.intellij-erlang" depends="unpack.intellij-erlang.zip" description="Get intellij-erlang ${intellij-erlang.release} from Github">
+        <copy todir="${intellij-erlang.cache}">
+            <fileset dir="${intellij-erlang.output.zip.root.dir}"/>
+        </copy>
+    </target>
+
+    <target name="get.intellij-erlang.zip" description="Get intellij-erlang ${intellij-erlang.release} zip from Github" unless="intellij-erlang.zip.available">
+        <mkdir dir="${intellij-erlang.output.dir}"/>
+        <get dest="${intellij-erlang.output.dir}"
+             src="https://github.com/ignatov/intellij-erlang/releases/download/%23${intellij-erlang.release}/Erlang.${intellij-erlang.release}.zip"
+             usetimestamp="true"
+             verbose="true"/>
+    </target>
+
+    <target name="unpack.intellij-erlang.zip" depends="get.intellij-erlang.zip" description="unzip ${intellij-erlang.zip}" unless="intellij-erlang.output.zip.root.available">
+        <unzip src="${intellij-erlang.output.dir}/${intellij-erlang.zip}" dest="${intellij-erlang.output.dir}"/>
+    </target>
+</project>