Example usage for org.objectweb.asm.commons GeneratorAdapter EQ

List of usage examples for org.objectweb.asm.commons GeneratorAdapter EQ

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Introduction

In this page you can find the example usage for org.objectweb.asm.commons GeneratorAdapter EQ.

Prototype

int EQ

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Document

Constant for the #ifCmp method.

Usage

From source file:co.cask.cdap.internal.io.DatumWriterGenerator.java

License:Apache License

/**
 * Generates method body for encoding Collection value. The logic is like this:
 *
 * <pre>//from  www  .j av  a 2 s  . com
 * {@code
 *
 * encoder.writeInt(collection.size());
 * for (T element : collection) {
 *   encodeElement(element, encoder, elementSchema, seenRefs);
 * }
 * if (collection.size() > 0) {
 *   encoder.writeInt(0);
 * }
 * }
 * </pre>
 * @param mg
 * @param componentType
 * @param componentSchema
 * @param value
 * @param encoder
 */
private void encodeCollection(GeneratorAdapter mg, TypeToken<?> componentType, Schema componentSchema,
        int value, int encoder, int schemaLocal, int seenRefs) {
    // Encode and store the collection length locally
    mg.loadArg(value);
    mg.invokeInterface(Type.getType(Collection.class), getMethod(int.class, "size"));
    int length = mg.newLocal(Type.INT_TYPE);
    mg.storeLocal(length);

    mg.loadArg(encoder);
    mg.loadLocal(length);
    mg.invokeInterface(Type.getType(Encoder.class), getMethod(Encoder.class, "writeInt", int.class));
    mg.pop();

    // Store the component schema
    mg.loadArg(schemaLocal);
    mg.invokeVirtual(Type.getType(Schema.class), getMethod(Schema.class, "getComponentSchema"));
    int componentSchemaLocal = mg.newLocal(Type.getType(Schema.class));
    mg.storeLocal(componentSchemaLocal);

    // Store the iterator
    int iterator = mg.newLocal(Type.getType(Iterator.class));
    mg.loadArg(value);
    mg.invokeInterface(Type.getType(Collection.class), getMethod(Iterator.class, "iterator"));
    mg.storeLocal(iterator);

    // For loop with iterator. Encode each component
    Label beginFor = mg.mark();
    Label endFor = mg.newLabel();
    mg.loadLocal(iterator);
    mg.invokeInterface(Type.getType(Iterator.class), getMethod(boolean.class, "hasNext"));
    mg.ifZCmp(GeneratorAdapter.EQ, endFor);

    // Call the encode method for encoding the element.
    mg.loadThis();

    mg.loadLocal(iterator);
    mg.invokeInterface(Type.getType(Iterator.class), getMethod(Object.class, "next"));
    doCast(mg, componentType, componentSchema);
    mg.loadArg(encoder);
    mg.loadLocal(componentSchemaLocal);
    mg.loadArg(seenRefs);
    mg.invokeVirtual(classType, getEncodeMethod(componentType, componentSchema));
    mg.goTo(beginFor);

    mg.mark(endFor);

    // if length > 0, write out 0 at the end of array.
    Label zeroLength = mg.newLabel();
    mg.loadLocal(length);
    mg.ifZCmp(GeneratorAdapter.LE, zeroLength);
    encodeInt(mg, 0, encoder);
    mg.mark(zeroLength);
}

From source file:co.cask.cdap.internal.io.DatumWriterGenerator.java

License:Apache License

/**
 * Generates method body for encoding map value. The logic is like this:
 *
 * <pre>//from  ww  w  .  jav  a 2 s .  c o  m
 * {@code
 *
 * encoder.writeInt(map.size();
 *
 * for (Map.Entry<Key, Value> entry : map.entrySet()) {
 *   encodeKey(entry.getKey(), encoder, keySchema, seenRefs);
 *   encodeValue(entry.getValue(), encoder, valueSchema, seenRefs);
 * }
 *
 * if (map.size() > 0) {
 *   encoder.writeInt(0);
 * }
 * }
 * </pre>
 *
 * @param mg
 * @param keyType
 * @param valueType
 * @param keySchema
 * @param valueSchema
 * @param value
 * @param encoder
 * @param schemaLocal
 * @param seenRefs
 */
private void encodeMap(GeneratorAdapter mg, TypeToken<?> keyType, TypeToken<?> valueType, Schema keySchema,
        Schema valueSchema, int value, int encoder, int schemaLocal, int seenRefs) {
    // Encode and store the map length locally
    mg.loadArg(value);
    mg.invokeInterface(Type.getType(Map.class), getMethod(int.class, "size"));
    int length = mg.newLocal(Type.INT_TYPE);
    mg.storeLocal(length);

    mg.loadArg(encoder);
    mg.loadLocal(length);
    mg.invokeInterface(Type.getType(Encoder.class), getMethod(Encoder.class, "writeInt", int.class));
    mg.pop();

    // Stores the key and value schema
    mg.loadArg(schemaLocal);
    mg.invokeVirtual(Type.getType(Schema.class), getMethod(Map.Entry.class, "getMapSchema"));
    mg.dup();

    int keySchemaLocal = mg.newLocal(Type.getType(Schema.class));
    mg.invokeInterface(Type.getType(Map.Entry.class), getMethod(Object.class, "getKey"));
    mg.checkCast(Type.getType(Schema.class));
    mg.storeLocal(keySchemaLocal);

    int valueSchemaLocal = mg.newLocal(Type.getType(Schema.class));
    mg.invokeInterface(Type.getType(Map.Entry.class), getMethod(Object.class, "getValue"));
    mg.checkCast(Type.getType(Schema.class));
    mg.storeLocal(valueSchemaLocal);

    // Store the entry set iterator
    int iterator = mg.newLocal(Type.getType(Iterator.class));
    mg.loadArg(value);
    mg.invokeInterface(Type.getType(Map.class), getMethod(Set.class, "entrySet"));
    mg.invokeInterface(Type.getType(Set.class), getMethod(Iterator.class, "iterator"));
    mg.storeLocal(iterator);

    // For loop the entry set iterator, encode each key-value pairs
    Label beginFor = mg.mark();
    Label endFor = mg.newLabel();
    mg.loadLocal(iterator);
    mg.invokeInterface(Type.getType(Iterator.class), getMethod(boolean.class, "hasNext"));
    mg.ifZCmp(GeneratorAdapter.EQ, endFor);

    int entry = mg.newLocal(Type.getType(Map.Entry.class));
    mg.loadLocal(iterator);
    mg.invokeInterface(Type.getType(Iterator.class), getMethod(Object.class, "next"));
    mg.checkCast(Type.getType(Map.Entry.class));
    mg.storeLocal(entry);

    // encode key
    mg.loadThis();
    mg.loadLocal(entry);
    mg.invokeInterface(Type.getType(Map.Entry.class), getMethod(Object.class, "getKey"));
    doCast(mg, keyType, keySchema);
    mg.loadArg(encoder);
    mg.loadLocal(keySchemaLocal);
    mg.loadArg(seenRefs);
    mg.invokeVirtual(classType, getEncodeMethod(keyType, keySchema));

    // encode value
    mg.loadThis();
    mg.loadLocal(entry);
    mg.invokeInterface(Type.getType(Map.Entry.class), getMethod(Object.class, "getValue"));
    doCast(mg, valueType, valueSchema);
    mg.loadArg(encoder);
    mg.loadLocal(valueSchemaLocal);
    mg.loadArg(seenRefs);
    mg.invokeVirtual(classType, getEncodeMethod(valueType, valueSchema));

    mg.goTo(beginFor);
    mg.mark(endFor);

    // if length > 0, write out 0 at the end of map
    Label zeroLength = mg.newLabel();
    mg.loadLocal(length);
    mg.ifZCmp(GeneratorAdapter.LE, zeroLength);
    encodeInt(mg, 0, encoder);
    mg.mark(zeroLength);
}

From source file:com.xruby.compiler.codegen.MethodGenerator.java

License:BSD License

public void returnIfBlockReturned() {
    dup();/*from ww  w  .j a va2  s  .c  om*/
    invokeVirtual(Types.RUBY_VALUE_TYPE, Method.getMethod("boolean returnedInBlock()"));
    Label after_return = new Label();
    ifZCmp(GeneratorAdapter.EQ, after_return);
    returnValue();//TODO more error checking, may not in the method context
    mark(after_return);
    /*TODO if it is going to return any way, should not not check.
      Right now the code may look like:
      if(!rubyvalue5.returnedInBlock()) goto _L2; else goto _L1
      _L1:
              return;
      _L2:
              return;
      */
}

From source file:com.xruby.compiler.codegen.MethodGenerator.java

License:BSD License

public void checkBreakedOrReturned(boolean is_in_block) {
    int value = newLocal(Types.RUBY_VALUE_TYPE);
    storeLocal(value);/*from   w w w .j a  v a 2 s. c o  m*/

    invokeVirtual(Types.RUBY_BLOCK_TYPE, CgUtil.getMethod("breakedOrReturned", Type.BOOLEAN_TYPE));
    Label after_return = new Label();
    ifZCmp(GeneratorAdapter.EQ, after_return);
    if (is_in_block) {
        loadThis();
        push(true);
        putField(Types.RUBY_BLOCK_TYPE, "__break__", Type.BOOLEAN_TYPE);
    }
    loadLocal(value);
    returnValue();//TODO more error checking, may not in the method context
    mark(after_return);
    loadLocal(value);
}

From source file:com.xruby.compiler.codegen.RubyCompilerImpl.java

License:BSD License

public Object visitAfterIfCondition() {
    MethodGenerator mg = cg_.getMethodGenerator();
    mg.RubyValue_isTrue();/*from w  ww  .j a  v  a 2 s  .  c o  m*/
    Label label = new Label();
    mg.ifZCmp(GeneratorAdapter.EQ, label);
    return label;
}

From source file:com.xruby.compiler.codegen.RubyCompilerImpl.java

License:BSD License

public void visitWhileConditionEnd(boolean always_true, boolean is_until) {
    MethodGenerator mg = cg_.getMethodGenerator();
    if (always_true) {
        mg.push(true);/*  w w w.j a va 2 s. c  o  m*/
    } else {
        mg.RubyValue_isTrue();
    }

    if (is_until) {
        mg.ifZCmp(GeneratorAdapter.NE, mg.getLabelManager().getCurrentX());
    } else {
        mg.ifZCmp(GeneratorAdapter.EQ, mg.getLabelManager().getCurrentX());
    }

    mg.mark(mg.getLabelManager().getCurrentRedo());
}

From source file:com.xruby.compiler.codegen.RubyCompilerImpl.java

License:BSD License

public Object visitAfterWhenCondition(Object case_value, boolean mrhs) {
    int i = (Integer) case_value;
    MethodGenerator mg = cg_.getMethodGenerator();
    mg.loadLocal(i);/*from  w  ww.  j  av a2  s  .c  om*/
    if (!mrhs) {
        mg.RubyAPI_testCaseEqual();
    } else {
        mg.RubyAPI_testCaseEqual2();
    }
    Label label = new Label();
    mg.ifZCmp(GeneratorAdapter.EQ, label);
    return label;
}

From source file:com.xruby.compiler.codegen.RubyCompilerImpl.java

License:BSD License

public Object visitAfterWhenConditionNotNil(Object case_value) {
    int i = (Integer) case_value;
    MethodGenerator mg = cg_.getMethodGenerator();
    mg.loadLocal(i);/*  w  w  w  .jav a  2 s.  c om*/
    mg.RubyAPI_testCaseEqualNotNil();

    Label label = new Label();
    mg.ifZCmp(GeneratorAdapter.EQ, label);
    return label;
}

From source file:com.xruby.compiler.codegen.RubyCompilerImpl.java

License:BSD License

public Object visitRescueVariable(String name, int exception_variable) {
    MethodGenerator mg = cg_.getMethodGenerator();
    mg.loadLocal(exception_variable);/*from ww w.  j av  a 2s .co  m*/
    mg.RubyAPI_testExceptionType();
    Label label = new Label();
    mg.ifZCmp(GeneratorAdapter.EQ, label);

    if (null != name) {
        mg.loadLocal(exception_variable);
        mg.RubyAPI_convertRubyException2RubyValue();
        cg_.storeVariable(name);
    }

    return label;
}

From source file:com.xruby.compiler.codegen.RubyCompilerImpl.java

License:BSD License

public void visitPotentialProcCall() {
    MethodGenerator mg = cg_.getMethodGenerator();
    mg.dup();/*from   w  w  w  . j  a va2s  . c o  m*/
    mg.instanceOf(Types.RUBY_PROC_TYPE);

    Label label1 = new Label();
    mg.ifZCmp(GeneratorAdapter.EQ, label1);

    mg.dup();
    mg.checkCast(Types.RUBY_PROC_TYPE);

    //check if in the right context
    //TODO have not considered all the situations
    mg.dup();
    mg.RubyProc_isDefinedInAnotherBlock();
    Label label2 = new Label();
    mg.ifZCmp(GeneratorAdapter.NE, label2);

    cg_.addVariableToBinding();//TODO should we use updateBinding()?
    mg.mark(label2);
    mg.pop();

    mg.mark(label1);
}