From 15e33edcf42f3a91166905fd5effdd5a78109150 Mon Sep 17 00:00:00 2001
From: Luiz Janeiro <luizjaneiro007@hotmail.com>
Date: Wed, 19 Oct 2016 15:07:00 -0200
Subject: [PATCH 1/2] add_minus_unary

---
 src/main/cup/parser.cup            |  1 +
 src/main/java/absyn/ExpNegate.java | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 src/main/java/absyn/ExpNegate.java

diff --git a/src/main/cup/parser.cup b/src/main/cup/parser.cup
index 24eff22..ed6729a 100644
--- a/src/main/cup/parser.cup
+++ b/src/main/cup/parser.cup
@@ -53,5 +53,6 @@ term ::=
 
 factor ::=
   LITNUM:x               {: RESULT = new ExpNum(x);     :}
+| MINUS factor:x         {: RESULT = new ExpNegate(x);     :}
 | LPAREN exp:x RPAREN    {: RESULT = x;     :}
 ;
diff --git a/src/main/java/absyn/ExpNegate.java b/src/main/java/absyn/ExpNegate.java
new file mode 100644
index 0000000..c8b0a58
--- /dev/null
+++ b/src/main/java/absyn/ExpNegate.java
@@ -0,0 +1,28 @@
+package absyn;
+import javaslang.collection.Tree;
+
+import static org.bytedeco.javacpp.LLVM.*;
+
+/**
+ * Created by luiz on 10/19/16.
+ */
+public class ExpNegate extends Exp {
+    public final Exp arg;
+
+    public ExpNegate(Exp arg) {
+        this.arg = arg;
+    }
+
+    @Override
+    public LLVMValueRef codegen(LLVMModuleRef module, LLVMBuilderRef builder) {
+        final LLVMValueRef zero = LLVMConstReal(LLVMDoubleType(), 0);
+        final LLVMValueRef v_arg = arg.codegen(module, builder);
+
+        return LLVMBuildFSub(builder, zero, v_arg, "negtmp");
+    }
+
+    @Override
+    public Tree.Node<String> toTree() {
+        return Tree.of("ExpNegate", arg.toTree());
+    }
+}

From b3313c3fa9cfaba7083ca3dba5424afbeea81c25 Mon Sep 17 00:00:00 2001
From: Luiz Janeiro <luizjaneiro007@hotmail.com>
Date: Wed, 19 Oct 2016 16:01:24 -0200
Subject: [PATCH 2/2] minus_unary

---
 eplan.iml | 32 ++++++++++++++++++++++++++++++++
 test1.dot |  7 +++++++
 2 files changed, 39 insertions(+)
 create mode 100644 eplan.iml
 create mode 100644 test1.dot

diff --git a/eplan.iml b/eplan.iml
new file mode 100644
index 0000000..728b489
--- /dev/null
+++ b/eplan.iml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8" inherit-compiler-output="false">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/target/generated-sources/cup" isTestSource="false" generated="true" />
+      <sourceFolder url="file://$MODULE_DIR$/target/generated-sources/jflex" isTestSource="false" generated="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target/classes" />
+      <excludeFolder url="file://$MODULE_DIR$/target/maven-archiver" />
+      <excludeFolder url="file://$MODULE_DIR$/target/surefire" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Maven: com.beust:jcommander:1.58" level="project" />
+    <orderEntry type="library" name="Maven: com.github.vbmacher:java-cup-runtime:11b-20160615" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.commons:commons-lang3:3.4" level="project" />
+    <orderEntry type="library" name="Maven: io.javaslang:javaslang:2.0.4" level="project" />
+    <orderEntry type="library" name="Maven: io.javaslang:javaslang-match:2.0.4" level="project" />
+    <orderEntry type="module-library">
+      <library name="Maven: io.javaslang:javaslang-render:2.0.0-SNAPSHOT">
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/src/main/resources/javaslang-render.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>
\ No newline at end of file
diff --git a/test1.dot b/test1.dot
new file mode 100644
index 0000000..a1f01be
--- /dev/null
+++ b/test1.dot
@@ -0,0 +1,7 @@
+digraph Tree {
+  lbl0 [label="ExpBinOp: PLUS"];
+  lbl1 [label="ExpNum: 22.0"];
+  lbl2 [label="ExpNum: 8765.0"];
+  lbl0 -> lbl1;
+  lbl0 -> lbl2;
+}