mirror of
https://github.com/ParkerTenBroeck/coroutines.git
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95 lines
4.2 KiB
Java
95 lines
4.2 KiB
Java
package generator.runtime.gen;
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import generator.gen.Gen;
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import generator.runtime.*;
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import java.lang.classfile.*;
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import java.lang.constant.ClassDesc;
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import java.lang.constant.ConstantDescs;
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import java.lang.constant.MethodTypeDesc;
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import java.util.List;
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public class GenSMBuilder extends StateMachineBuilder {
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public final static ClassDesc CD_Gen = ClassDesc.ofDescriptor(Gen.class.descriptorString());
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public final static ClassDesc CD_Res = ClassDesc.ofDescriptor(Gen.Res.class.descriptorString());
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public final static ClassDesc CD_Yield = ClassDesc.ofDescriptor(Gen.Yield.class.descriptorString());
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public final static ClassDesc CD_Ret = ClassDesc.ofDescriptor(Gen.Ret.class.descriptorString());
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public final static MethodTypeDesc MTD_Res = MethodTypeDesc.of(CD_Res);
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public final static MethodTypeDesc MTD_Gen_Obj = MethodTypeDesc.of(CD_Gen, ConstantDescs.CD_Object);
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public final static MethodTypeDesc MTD_Gen = MethodTypeDesc.of(CD_Gen);
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public final static MethodTypeDesc MTD_Obj = MethodTypeDesc.of(ConstantDescs.CD_Object);
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// static class YieldHandler extends SpecialMethodHandler {
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// final int resume_state;
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// final Label resume_label;
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// final boolean is_void;
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//
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// public YieldHandler(StateMachineBuilder smb, CodeBuilder cob, boolean is_void) {
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// super(smb, cob);
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// resume_state = smb.add_state(resume_label = cob.newLabel());
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// this.is_void = is_void;
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// }
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//
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// public ReplacementKind replacementKind(){return ReplacementKind.ImmediateReplacingPop;}
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//
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// @Override
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// public void build_prelude(StateMachineBuilder smb, CodeBuilder cob, Frame frame) {
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// if(is_void)cob.aconst_null();
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//
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//// smb.lt.savingLocals(smb.CD_this, cob, () -> {
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//// cob.aload(0).loadConstant(resume_state).putfield(smb.CD_this, STATE_NAME, TypeKind.INT.upperBound())
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//// .new_(CD_Yield)
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//// .dup_x1()
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//// .swap()
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//// .invokespecial(CD_Yield, ConstantDescs.INIT_NAME, MethodTypeDesc.of(ConstantDescs.CD_void, ConstantDescs.CD_Object))
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//// .areturn();
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//// cob.labelBinding(resume_label);
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//// });
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// }
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// }
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//
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// static class RetHandler extends SpecialMethodHandler {
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// final boolean is_void;
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//
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// public RetHandler(StateMachineBuilder smb, CodeBuilder cob, boolean is_void) {
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// super(smb, cob);
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// this.is_void = is_void;
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// }
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//
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// public ReplacementKind replacementKind(){return ReplacementKind.ReplacingNextReturn;}
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//
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// @Override
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// public void build_prelude(StateMachineBuilder smb, CodeBuilder cob, Frame frame) {
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// if(is_void)cob.aconst_null();
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//
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// cob.aload(0).loadConstant(-1).putfield(smb.CD_this, STATE_NAME, TypeKind.INT.upperBound())
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// .new_(CD_Ret)
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// .dup_x1()
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// .swap()
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// .invokespecial(CD_Ret, ConstantDescs.INIT_NAME, MethodTypeDesc.of(ConstantDescs.CD_void, ConstantDescs.CD_Object))
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// .areturn();
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// }
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// }
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public GenSMBuilder(ClassModel src_clm, MethodModel src_mem, CodeModel src_com) {
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super(src_clm, src_mem, src_com);
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// smmap.put(new SpecialMethod(CD_Gen, "yield", MTD_Gen_Obj),(smb, cob) -> new YieldHandler(smb, cob, false));
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// smmap.put(new SpecialMethod(CD_Gen, "yield", MTD_Gen),(smb, cob) -> new YieldHandler(smb, cob, true));
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// smmap.put(new SpecialMethod(CD_Gen, "ret", MTD_Gen_Obj),(smb, cob) -> new RetHandler(smb, cob, false));
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// smmap.put(new SpecialMethod(CD_Gen, "ret", MTD_Gen),(smb, cob) -> new RetHandler(smb, cob, true));
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}
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@Override
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protected String uniqueName() {
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return "Gen"+super.uniqueName();
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}
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@Override
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protected void buildStateMachineMethod(ClassBuilder clb){
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clb.withInterfaces(List.of(clb.constantPool().classEntry(CD_Gen)));
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clb.withMethod("next", MethodTypeDesc.of(CD_Res), ClassFile.ACC_PUBLIC, mb -> mb.withCode(cob -> {
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buildStateMachineMethodCode(clb, cob, 1);
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}));
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}
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}
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