Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / internal / codegen / ssa / exits / Jump.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/codegen/ssa/exits/Jump.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/codegen/ssa/exits/Jump.java
new file mode 100644 (file)
index 0000000..d271dc0
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/codegen/ssa/exits/Jump.java
@@ -0,0 +1,142 @@
+package org.simantics.scl.compiler.internal.codegen.ssa.exits;\r
+\r
+import java.util.ArrayList;\r
+\r
+import org.simantics.scl.compiler.common.exceptions.InternalCompilerError;\r
+import org.simantics.scl.compiler.internal.codegen.continuations.Cont;\r
+import org.simantics.scl.compiler.internal.codegen.continuations.ContRef;\r
+import org.simantics.scl.compiler.internal.codegen.references.Val;\r
+import org.simantics.scl.compiler.internal.codegen.references.ValRef;\r
+import org.simantics.scl.compiler.internal.codegen.ssa.SSABlock;\r
+import org.simantics.scl.compiler.internal.codegen.ssa.SSAExit;\r
+import org.simantics.scl.compiler.internal.codegen.ssa.SSAFunction;\r
+import org.simantics.scl.compiler.internal.codegen.ssa.binders.ValRefBinder;\r
+import org.simantics.scl.compiler.internal.codegen.utils.CopyContext;\r
+import org.simantics.scl.compiler.internal.codegen.utils.MethodBuilder;\r
+import org.simantics.scl.compiler.internal.codegen.utils.PrintingContext;\r
+import org.simantics.scl.compiler.internal.codegen.utils.SSAValidationContext;\r
+import org.simantics.scl.compiler.types.TVar;\r
+import org.simantics.scl.compiler.types.Type;\r
+\r
+public class Jump extends SSAExit implements ValRefBinder {\r
+    private ContRef target;\r
+    private ValRef[] parameters;\r
+    \r
+    public Jump(ContRef target, ValRef ... parameters) {\r
+        setTarget(target);\r
+        setParameters(parameters);\r
+    }\r
+    \r
+    public ContRef getTarget() {\r
+        return target;\r
+    }\r
+    \r
+    public void setTarget(ContRef target) {\r
+        this.target = target;\r
+        target.setParent(this);\r
+    }\r
+    \r
+    public ValRef[] getParameters() {\r
+        return parameters;\r
+    }\r
+    \r
+    public void setParameters(ValRef[] parameters) {\r
+        this.parameters = parameters;\r
+        for(ValRef parameter : parameters)\r
+            parameter.setParent(this);\r
+    }\r
+\r
+    @Override\r
+    public void generateCode(MethodBuilder mb) {        \r
+        mb.jump(target, ValRef.getBindings(parameters));\r
+    }\r
+\r
+    @Override\r
+    public void toString(PrintingContext context) {\r
+        context.append(target);\r
+        for(ValRef parameter : parameters) {\r
+            context.append(' ');\r
+            context.append(parameter);\r
+        }\r
+        context.append('\n');\r
+        for(SSABlock block : getSuccessors())\r
+            context.addBlock(block);\r
+        \r
+    }\r
+\r
+    @Override\r
+    public void validate(SSAValidationContext context) {\r
+        context.validate(target);\r
+        if(target.getParent() != this)\r
+            throw new InternalCompilerError();\r
+        for(ValRef parameter : parameters) {\r
+            context.validate(parameter);\r
+            if(parameter.getParent() != this)\r
+                throw new InternalCompilerError();\r
+        }\r
+        \r
+        Cont cont = target.getBinding();\r
+        context.assertEquals(cont.getArity(), parameters.length);\r
+        //for(int i=0;i<parameters.length;++i)\r
+        //    context.assertSubsumes(parameters[i].getType(), cont.getParameterType(i));\r
+    }    \r
+    \r
+    @Override\r
+    public void destroy() {\r
+        target.remove();\r
+        for(ValRef parameter : parameters)\r
+            parameter.remove();\r
+    }\r
+\r
+    @Override\r
+    public SSAExit copy(CopyContext context) {\r
+        return new Jump(context.copy(target), context.copy(parameters));\r
+    }\r
+    \r
+    @Override\r
+    public void replace(TVar[] vars, Type[] replacements) {\r
+        for(ValRef parameter : parameters)\r
+            parameter.replace(vars, replacements);\r
+    }\r
+\r
+    @Override\r
+    public void collectFreeVariables(SSAFunction function,\r
+            ArrayList<ValRef> vars) {\r
+        for(ValRef parameter : parameters)\r
+            parameter.collectFreeVariables(function, vars);        \r
+    }\r
+\r
+    @Override\r
+    public Cont addParametersInFrontOf(ContRef contRef, Val[] newParameters, Val[] oldParameters, Cont proxy) {\r
+        ValRef[] occurences = ValRef.createOccurrences(newParameters);\r
+        for(ValRef ref : occurences)\r
+            ref.setParent(this);\r
+        this.parameters = ValRef.concat(occurences, this.parameters);\r
+        return proxy;\r
+    }\r
+\r
+    public void setParameter(int position, ValRef parameter) {\r
+        parameters[position] = parameter;\r
+        parameter.setParent(this);\r
+    }\r
+\r
+    public ValRef getParameter(int position) {\r
+        return parameters[position];\r
+    }\r
+    \r
+    @Override\r
+    public boolean isJump(Cont cont, Val parameter) {        \r
+        return target.getBinding() == cont && \r
+                parameters.length == 1 && \r
+                parameters[0].getBinding() == parameter;\r
+    }\r
+\r
+    @Override\r
+    public SSABlock[] getSuccessors() {\r
+        Cont cont = target.getBinding();\r
+        if(cont instanceof SSABlock)\r
+            return new SSABlock[] {(SSABlock)cont};\r
+        else\r
+            return SSABlock.EMPTY_ARRAY;\r
+    }\r
+}\r