(refs #7250) Refactoring CHR implementation

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / internal / codegen / chr / CHRCodeGenerator.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/codegen/chr/CHRCodeGenerator.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/codegen/chr/CHRCodeGenerator.java
deleted file mode 100644 (file)
index 3a249c5..0000000
--- a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/codegen/chr/CHRCodeGenerator.java
+++ /dev/null
@@ -1,100 +0,0 @@
-package org.simantics.scl.compiler.internal.codegen.chr;
-
-import java.util.ArrayList;
-
-import org.cojen.classfile.TypeDesc;
-import org.objectweb.asm.Opcodes;
-import org.simantics.scl.compiler.elaboration.chr.CHRRuleset;
-import org.simantics.scl.compiler.elaboration.chr.relations.CHRConstraint;
-import org.simantics.scl.compiler.internal.codegen.references.BoundVar;
-import org.simantics.scl.compiler.internal.codegen.utils.ClassBuilder;
-import org.simantics.scl.compiler.internal.codegen.utils.Constants;
-import org.simantics.scl.compiler.internal.codegen.utils.MethodBuilderBase;
-import org.simantics.scl.compiler.internal.codegen.utils.ModuleBuilder;
-
-public class CHRCodeGenerator {
-
-    public static final TypeDesc FACT_ID_TYPE = TypeDesc.INT;
-    private static final String FactActivationQueue_name = "org/simantics/scl/runtime/chr/FactActivationQueue";
-    private static final TypeDesc FactActivationQueue = TypeDesc.forClass(FactActivationQueue_name);
-    private static final String QUEUE = "queue";
-
-    public static void generateStore(ModuleBuilder moduleBuilder, CHRRuleset ruleset) {
-        ClassBuilder storeClassBuilder = new ClassBuilder(moduleBuilder, Opcodes.ACC_PUBLIC, ruleset.storeClassName, "java/lang/Object");
-        if(ruleset.parameters == null)
-            ruleset.parameters = new BoundVar[0];
-        ruleset.parameterTypeDescs = moduleBuilder.getJavaTypeTranslator().getTypeDescs(ruleset.parameters); 
-
-        ArrayList<StoreInitialization> hashIndexInitializations = new ArrayList<>();
-        for(CHRConstraint constraint : ruleset.constraints)
-            generateFact(storeClassBuilder, constraint, hashIndexInitializations);
-
-        // Fields
-        for(int i=0;i<ruleset.parameterTypeDescs.length;++i) {
-            TypeDesc typeDesc = ruleset.parameterTypeDescs[i];
-            if(typeDesc.equals(TypeDesc.VOID))
-                continue;
-            storeClassBuilder.addField(Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL, "p" + i, typeDesc);
-        }
-        storeClassBuilder.addField(Opcodes.ACC_PUBLIC, "currentId", FACT_ID_TYPE);
-        for(StoreInitialization ini : hashIndexInitializations)
-            storeClassBuilder.addField(ini.access, ini.fieldName, ini.fieldType);
-        storeClassBuilder.addField(Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL, QUEUE, FactActivationQueue);
-
-        // Constructors
-
-        {
-            MethodBuilderBase mb = storeClassBuilder.addConstructor(Opcodes.ACC_PUBLIC, ruleset.parameterTypeDescs);
-            mb.loadThis();
-            mb.invokeConstructor(storeClassBuilder.getSuperClassName(), Constants.EMPTY_TYPEDESC_ARRAY);
-            for(int i=0;i<ruleset.parameterTypeDescs.length;++i) {
-                TypeDesc typeDesc = ruleset.parameterTypeDescs[i];
-                if(typeDesc.equals(TypeDesc.VOID))
-                    continue;
-                mb.loadThis();
-                mb.loadLocal(mb.getParameter(i));
-                mb.storeField(ruleset.storeClassName, "p" + i, ruleset.parameterTypeDescs[i]);
-            }
-            mb.loadThis();
-            mb.loadConstant(1);
-            mb.storeField(storeClassBuilder.getClassName(), "currentId", TypeDesc.INT);
-            for(StoreInitialization ini : hashIndexInitializations) {
-                mb.loadThis();
-                mb.newObject(ini.className);
-                mb.dup();
-                mb.invokeConstructor(ini.className, Constants.EMPTY_TYPEDESC_ARRAY);
-                mb.storeField(ruleset.storeClassName, ini.fieldName, ini.fieldType);
-            }
-            {
-                mb.loadThis();
-                mb.newObject(FactActivationQueue_name);
-                mb.dup();
-                mb.loadConstant(ruleset.priorityCount);
-                mb.invokeConstructor(FactActivationQueue_name, new TypeDesc[] {TypeDesc.INT});
-                mb.storeField(ruleset.storeClassName, QUEUE, FactActivationQueue);
-            }
-            mb.returnVoid();
-            mb.finish();
-        }
-
-        // Activate
-
-        {
-            MethodBuilderBase mb = storeClassBuilder.addMethodBase(Opcodes.ACC_PUBLIC, "activate", TypeDesc.VOID, new TypeDesc[] {TypeDesc.INT});
-            mb.loadThis();
-            mb.loadField(ruleset.storeClassName, QUEUE, FactActivationQueue);
-            mb.loadThis();
-            mb.loadLocal(mb.getParameter(0));
-            mb.invokeVirtual(FactActivationQueue_name, "activate", TypeDesc.VOID, new TypeDesc[] {TypeDesc.OBJECT, TypeDesc.INT});
-            mb.returnVoid();
-            mb.finish();
-        }
-
-        moduleBuilder.addClass(storeClassBuilder);
-    }
-
-    private static void generateFact(ClassBuilder storeClassBuilder, CHRConstraint constraint, ArrayList<StoreInitialization> hashIndexInitializations) {
-        CHRFactCodeGenerator generator = new CHRFactCodeGenerator(storeClassBuilder, constraint);
-        generator.generate(hashIndexInitializations);
-    }
-}