From 57a39a156a7eb946a8e174837e1e4cf561ea63a9 Mon Sep 17 00:00:00 2001
From: Alexey Andreev <konsoletyper@gmail.com>
Date: Fri, 31 Jul 2015 17:20:21 +0300
Subject: [PATCH] Emit neg and not

---
 .../teavm/model/emit/ConditionEmitter.java    |  4 ++++
 .../org/teavm/model/emit/ValueEmitter.java    | 22 +++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/teavm-core/src/main/java/org/teavm/model/emit/ConditionEmitter.java b/teavm-core/src/main/java/org/teavm/model/emit/ConditionEmitter.java
index ea8101e83..b3da0fa5d 100644
--- a/teavm-core/src/main/java/org/teavm/model/emit/ConditionEmitter.java
+++ b/teavm-core/src/main/java/org/teavm/model/emit/ConditionEmitter.java
@@ -45,4 +45,8 @@ public class ConditionEmitter {
         ForkEmitter newFork = fork.or(block, otherEmitter.fork);
         return new ConditionEmitter(pe, newFork);
     }
+
+    public ConditionEmitter not() {
+        return new ConditionEmitter(pe, fork.not());
+    }
 }
diff --git a/teavm-core/src/main/java/org/teavm/model/emit/ValueEmitter.java b/teavm-core/src/main/java/org/teavm/model/emit/ValueEmitter.java
index 65b9b1457..7421d84a8 100644
--- a/teavm-core/src/main/java/org/teavm/model/emit/ValueEmitter.java
+++ b/teavm-core/src/main/java/org/teavm/model/emit/ValueEmitter.java
@@ -45,6 +45,7 @@ import org.teavm.model.instructions.IntegerSubtype;
 import org.teavm.model.instructions.InvocationType;
 import org.teavm.model.instructions.InvokeInstruction;
 import org.teavm.model.instructions.IsInstanceInstruction;
+import org.teavm.model.instructions.NegateInstruction;
 import org.teavm.model.instructions.NumericOperandType;
 import org.teavm.model.instructions.PutElementInstruction;
 import org.teavm.model.instructions.PutFieldInstruction;
@@ -119,6 +120,27 @@ public class ValueEmitter {
         return pe;
     }
 
+    public ValueEmitter neg() {
+        if (!(type instanceof ValueType.Primitive)) {
+            throw new EmitException("Can't negate non-primitive: " + type);
+        }
+
+        ValueEmitter value = this;
+        PrimitiveType type = ((ValueType.Primitive) this.type).getKind();
+        IntegerSubtype subtype = convertToIntegerSubtype(type);
+        if (subtype != null) {
+            value = value.castToInteger(subtype);
+            type = PrimitiveType.INTEGER;
+        }
+
+        ValueEmitter result = pe.newVar(ValueType.primitive(type));
+        NegateInstruction insn = new NegateInstruction(convertToNumeric(type));
+        insn.setOperand(value.variable);
+        insn.setReceiver(result.variable);
+        pe.addInstruction(insn);
+        return result;
+    }
+
     static class Pair {
         ValueEmitter first;
         ValueEmitter second;