Improved startup and auto-detection of Erlang environment + Misc changes

.externalToolBuilders/Kilim Weaver.launch

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<launchConfiguration type="org.eclipse.ant.AntBuilderLaunchConfigurationType">
+<booleanAttribute key="org.eclipse.ant.ui.ATTR_TARGETS_UPDATED" value="true"/>
+<booleanAttribute key="org.eclipse.ant.ui.DEFAULT_VM_INSTALL" value="true"/>
+<booleanAttribute key="org.eclipse.debug.ui.ATTR_LAUNCH_IN_BACKGROUND" value="false"/>
+<stringAttribute key="org.eclipse.jdt.launching.CLASSPATH_PROVIDER" value="org.eclipse.ant.ui.AntClasspathProvider"/>
+<booleanAttribute key="org.eclipse.jdt.launching.DEFAULT_CLASSPATH" value="true"/>
+<stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.launching.macosx.MacOSXType/JVM Contents (MacOS X Default)"/>
+<stringAttribute key="org.eclipse.jdt.launching.MAIN_TYPE" value="org.eclipse.ant.internal.launching.remote.InternalAntRunner"/>
+<stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="erjang"/>
+<booleanAttribute key="org.eclipse.ui.externaltools.ATTR_BUILDER_ENABLED" value="true"/>
+<stringAttribute key="org.eclipse.ui.externaltools.ATTR_LOCATION" value="${workspace_loc:/erjang/weave.xml}"/>
+<stringAttribute key="org.eclipse.ui.externaltools.ATTR_RUN_BUILD_KINDS" value="full,incremental,"/>
+<booleanAttribute key="org.eclipse.ui.externaltools.ATTR_TRIGGERS_CONFIGURED" value="true"/>
+<stringAttribute key="org.eclipse.ui.externaltools.ATTR_WORKING_DIRECTORY" value="${workspace_loc:/erjang}"/>
+<stringAttribute key="process_factory_id" value="org.eclipse.ant.ui.remoteAntProcessFactory"/>
+</launchConfiguration>

.gitignore

@@ -7,4 +7,7 @@ classes
 target
 *.beam
 src/main/java/erjang/beam/interpreter/Interpreter.java
-src/test/java/erjang/*_TEST.java
+src/test/java/erjang/*_TEST.java
+otp-*.jar
+erjang.log*
+*.launch

.project

@@ -6,18 +6,18 @@
 	</projects>
 	<buildSpec>
 		<buildCommand>
-			<name>org.eclipse.dltk.core.scriptbuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.erjang.kilim_builder.KilimBuilder</name>
+			<name>org.eclipse.jdt.core.javabuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
+			<name>org.eclipse.ui.externaltools.ExternalToolBuilder</name>
+			<triggers>full,incremental,</triggers>
 			<arguments>
+				<dictionary>
+					<key>LaunchConfigHandle</key>
+					<value>&lt;project&gt;/.externalToolBuilders/Kilim Weaver.launch</value>
+				</dictionary>
 			</arguments>
 		</buildCommand>
 	</buildSpec>

build.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <project name="erjang" default="all">
-	<property name="erjang.version" value="0.1" />
+	<property name="erjang.version" value="0.2" />
 	<property file="erjang_cfg.properties" />
 
 	<path id="erjang.classpath">

ej

@@ -7,23 +7,15 @@ EJ_CMD=`which "$0"`
 while LINK=`readlink "$EJ_CMD"`; do EJ_CMD=$LINK; done
 ERJANG_DIR=`dirname "$EJ_CMD"`
 
-source "$ERJANG_DIR/env_cfg"
-
 ##      -Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,address=8787,server=n,suspend=n \
 
 exec java \
     -server \
     -Xmx1g -Xss50m \
     -XX:PermSize=128m \
-    -Derjang.configfile="$PROP_FILE" \
-    -Derjang.erts.version="$ERTS_VSN" \
-    -Derjang.otp.version="$OTP_VSN" \
-    -jar $ERJANG_DIR/erjang-0.1.jar \
+    -jar $ERJANG_DIR/erjang-0.2.jar \
 \
     -progname ej \
-    -home "$HOME" \
-    -root "$ERL_ROOT" \
     +A 10 \
     +S 1 \
-    +e "$ERTS_VSN" \
     "$@"

ejc

@@ -7,8 +7,6 @@ EJC_CMD=`which "$0"`
 while LINK=`readlink "$EJC_CMD"`; do EJC_CMD=$LINK; done
 ERJANG_DIR=`dirname "$EJC_CMD"`
 
-source "$ERJANG_DIR/env_cfg"
-
 ###########################################################
 # OS X - specific config
 if [[ $(uname) == "Darwin" ]]; then
@@ -24,14 +22,8 @@ exec java \
     -Xmx2g \
     $OSX_DOCK_ICON \
     $OSX_DOCK_NAME \
-    -Derjang.configfile="$PROP_FILE" \
-    -Derjang.erts.version="$ERTS_VSN" \
-    -Derjang.otp.version="$OTP_VSN" \
-    -cp "$ERJANG_DIR/erjang-0.1.jar" erjang.console.ERLConsole \
+    -cp "$ERJANG_DIR/erjang-0.2.jar" erjang.console.ERLConsole \
 \
-    -root "$ERL_ROOT" \
     +A 10 \
     +S 1 \
-    +e "$ERTS_VSN" \
-    -home "$HOME" \
     "$@"

erjang_cfg.properties

@@ -1,6 +1,6 @@
-erjang.otp.root = /usr/local/lib/erlang
-erjang.erts.version = 5.8.3
-erjang.otp.version = R14B02
+#erjang.otp.root = /usr/local/lib/erlang
+#erjang.erts.version = 5.8.3
+#erjang.otp.version = R14B02
 
 # erjang.debug.port=true
 # erjang.debug.inet=true

erl.cmd

@@ -2,7 +2,7 @@
 
 IF "x%OTPROOT%" == "x" SET OTPROOT="C:/Program Files/erl5.7.5"
 
-java -cp erjang-0.1.jar ^
+java -cp erjang-0.2.jar ^
     erjang.Main ^
     -root %OTPROOT% ^
     %1 %2 %3 %4 %5 %6 %7 %8 %9

fib_test.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-java -server -cp erjang-0.1.jar -Derjpath=./src/main/erl/preloaded/ebin:src/main/erl erjang.Erj fib:main
+java -server -cp erjang-0.2.jar -Derjpath=./src/main/erl/preloaded/ebin:src/main/erl erjang.Erj fib:main

src/main/java/erjang/ECons.java

@@ -21,14 +21,15 @@
 import java.io.ByteArrayOutputStream;
 import java.nio.ByteBuffer;
 import java.io.IOException;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
 import erjang.m.ets.EMatchContext;
 import erjang.m.ets.EPattern;
 import erjang.m.ets.ETermPattern;
 
-public abstract class ECons extends EObject {
+public abstract class ECons extends EObject implements Iterable<EObject> {
 
 	@Override
 	int cmp_order() {
@@ -241,4 +242,8 @@ public void collectCharList(CharCollector out)
 		} else tail.collectCharList(out);
 	}
 
+	@Override
+	public Iterator<EObject> iterator() {
+		return new EObjectIterator(this);
+	}
 }

src/main/java/erjang/EObjectIterator.java

@@ -0,0 +1,58 @@
+package erjang;
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+
+public class EObjectIterator implements Iterator<EObject> {
+	private EObject object = null;
+
+	public EObjectIterator(EObject object) {
+		this.object = object;
+	}
+
+	/* (non-Javadoc)
+	 * @see java.util.Iterator#hasNext()
+	 */
+	public boolean hasNext() {
+		if (object == null) {
+			return false;
+		}
+		return !object.isNil();
+	}
+
+	/* (non-Javadoc)
+	 * @see java.util.Iterator#next()
+	 */
+	public EObject next() {
+		if ((object == null)
+			|| object.isNil()) {
+			throw new NoSuchElementException();
+		}
+
+		EObject next;
+
+		ECons cons = object.testCons();
+		if ((cons != null)
+			// TODO how to handle EString? return each character? Or return it as single element only?
+			// for now we don't treat EString as collection, but as single element
+			&& !(cons instanceof EString)) {
+			next = cons.head();
+			object = cons.tail();
+		}
+		else {
+			// simple object, return it and set next object to null
+			next = object;
+			object = null;
+		}
+		return next;
+	}
+
+	/* (non-Javadoc)
+	 * @see java.util.Iterator#remove()
+	 */
+	public void remove() {
+		// not supported
+		throw new UnsupportedOperationException();
+	}
+}

src/main/java/erjang/ERT.java

@@ -626,7 +626,7 @@ public static EFun resolve_fun(EObject mod, EObject fun, int arity) {
 
 				final EFun pfun = EModuleManager.resolve(new FunID(pmod, f, arity+1));
 
-				return EFun.get_fun_with_handler(m.toString(), f.toString(), arity, new EFunHandler() {
+				return EFun.get_fun_with_handler(pmod.toString(), f.toString(), arity, new EFunHandler() {
 					@Override
 					public EObject invoke(EProc proc, EObject[] args) throws Pausable {
 						EObject[] real_args = new EObject[args.length+1];
@@ -1141,4 +1141,18 @@ public void write(byte[] b, int off, int len) throws IOException {
 		}
 	}
 
+	/**
+	 * contains versions, paths and other information.
+	 * use {@link ERT#setRuntimeInfo(RuntimeInfo)} to set this field.
+	 */
+	public static RuntimeInfo runtime_info = null;
+
+	public static void setRuntimeInfo(RuntimeInfo info) {
+		// TODO perform synchronization? We usually set this 
+		// field only once from Main before ERT is started
+		runtime_info = info;
+		if (runtime_info != null) {
+			System.setProperty("erjang.path", runtime_info.erl_bootstrap_ebindir);
+		}
+	}
 }

src/main/java/erjang/ErjangConfig.java

@@ -36,9 +36,9 @@ public class ErjangConfig {
 
 	static {
 		String configFileName = System.getProperty("erjang.configfile");
-		if (configFileName != null) {
+		if (configFileName != null && configFileName.trim().length() > 0) {
 			try {
-				FileInputStream in = new FileInputStream(configFileName);
+				FileInputStream in = new FileInputStream(configFileName.trim());
 				try {
 					Properties properties = new Properties();
 					properties.load(in);