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add unary negation #26

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add unary negation #26

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22 changes: 22 additions & 0 deletions eplan.iml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
<?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" />
<excludeFolder url="file://$MODULE_DIR$/target" />
</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="library" name="Maven: io.javaslang:javaslang-render:2.0.0" level="project" />
<orderEntry type="library" name="Maven: org.bytedeco.javacpp-presets:llvm:3.8.0-1.2" level="project" />
<orderEntry type="library" name="Maven: org.bytedeco:javacpp:1.2" level="project" />
<orderEntry type="library" name="Maven: org.bytedeco.javacpp-presets:llvm:linux-x86_64:3.8.0-1.2" level="project" />
</component>
</module>
1 change: 1 addition & 0 deletions src/main/cup/parser.cup
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Expand Up @@ -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; :}
;
34 changes: 34 additions & 0 deletions src/main/java/absyn/ExpNegate.java
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package absyn;

import javaslang.collection.Tree;
import org.bytedeco.javacpp.LLVM;

import static org.bytedeco.javacpp.LLVM.*;


public class ExpNegate extends Exp {
public final Exp e;

public ExpNegate(Exp e) {
this.e = e;
}


@Override


public LLVMValueRef codegen(LLVMModuleRef module, LLVMBuilderRef builder) {
final LLVMValueRef v_e = e.codegen(module, builder);
final LLVMValueRef zero = LLVMConstReal(LLVMDoubleType(), 0);
return LLVMBuildFSub(builder, zero, v_e, "subtmp");

}


@Override


public Tree.Node<String> toTree() {
return Tree.of("ExpNegate", e.toTree());
}
}