Example usage for org.objectweb.asm Opcodes ACONST

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ACONST_NULL.

Prototype

int ACONST_NULL

To view the source code for org.objectweb.asm Opcodes ACONST_NULL.

Click Source Link

Usage

From source file:org.elasticsearch.painless.node.ENull.java

License:Apache License

@Override
void write(MethodWriter writer, Globals globals) {
    writer.visitInsn(Opcodes.ACONST_NULL);
}

From source file:org.elasticsearch.painless.node.SDeclaration.java

License:Apache License

@Override
void write(MethodWriter writer, Globals globals) {
    writer.writeStatementOffset(location);

    if (expression == null) {
        switch (variable.type.sort) {
        case VOID:
            throw createError(new IllegalStateException("Illegal tree structure."));
        case BOOL:
        case BYTE:
        case SHORT:
        case CHAR:
        case INT:
            writer.push(0);//  w w w  .j  av  a  2s .  c  o m
            break;
        case LONG:
            writer.push(0L);
            break;
        case FLOAT:
            writer.push(0.0F);
            break;
        case DOUBLE:
            writer.push(0.0);
            break;
        default:
            writer.visitInsn(Opcodes.ACONST_NULL);
        }
    } else {
        expression.write(writer, globals);
    }

    writer.visitVarInsn(variable.type.type.getOpcode(Opcodes.ISTORE), variable.getSlot());
}

From source file:org.elasticsearch.painless.node.SSource.java

License:Apache License

@Override
void write(MethodWriter writer, Globals globals) {
    if (reserved.usesScore()) {
        // if the _score value is used, we do this once:
        // final double _score = scorer.score();
        Variable scorer = mainMethod.getVariable(null, Locals.SCORER);
        Variable score = mainMethod.getVariable(null, Locals.SCORE);

        writer.visitVarInsn(Opcodes.ALOAD, scorer.getSlot());
        writer.invokeVirtual(WriterConstants.SCORER_TYPE, WriterConstants.SCORER_SCORE);
        writer.visitInsn(Opcodes.F2D);//from  w w  w  .j av a  2  s  . c  om
        writer.visitVarInsn(Opcodes.DSTORE, score.getSlot());
    }

    if (reserved.usesCtx()) {
        // if the _ctx value is used, we do this once:
        // final Map<String,Object> ctx = input.get("ctx");

        Variable input = mainMethod.getVariable(null, Locals.PARAMS);
        Variable ctx = mainMethod.getVariable(null, Locals.CTX);

        writer.visitVarInsn(Opcodes.ALOAD, input.getSlot());
        writer.push(Locals.CTX);
        writer.invokeInterface(MAP_TYPE, MAP_GET);
        writer.visitVarInsn(Opcodes.ASTORE, ctx.getSlot());
    }

    if (reserved.getMaxLoopCounter() > 0) {
        // if there is infinite loop protection, we do this once:
        // int #loop = settings.getMaxLoopCounter()

        Variable loop = mainMethod.getVariable(null, Locals.LOOP);

        writer.push(reserved.getMaxLoopCounter());
        writer.visitVarInsn(Opcodes.ISTORE, loop.getSlot());
    }

    for (AStatement statement : statements) {
        statement.write(writer, globals);
    }

    if (!methodEscape) {
        writer.visitInsn(Opcodes.ACONST_NULL);
        writer.returnValue();
    }
}

From source file:org.elasticsearch.painless.Writer.java

License:Apache License

@Override
public Void visitSource(final SourceContext ctx) {
    final Metadata.StatementMetadata sourcesmd = metadata.getStatementMetadata(ctx);

    for (final StatementContext sctx : ctx.statement()) {
        visit(sctx);//from   w  w w . j a  va 2s .  co m
    }

    if (!sourcesmd.methodEscape) {
        execute.visitInsn(Opcodes.ACONST_NULL);
        execute.returnValue();
    }

    return null;
}

From source file:org.elasticsearch.painless.Writer.java

License:Apache License

@Override
public Void visitDeclvar(final DeclvarContext ctx) {
    final Metadata.ExpressionMetadata declvaremd = metadata.getExpressionMetadata(ctx);
    final org.objectweb.asm.Type type = declvaremd.to.type;
    final Sort sort = declvaremd.to.sort;
    final int slot = (int) declvaremd.postConst;

    final ExpressionContext exprctx = ctx.expression();
    final boolean initialize = exprctx == null;

    if (!initialize) {
        visit(exprctx);/*from w w  w . j a  v a  2  s  .c  o m*/
    }

    switch (sort) {
    case VOID:
        throw new IllegalStateException(Metadata.error(ctx) + "Unexpected writer state.");
    case BOOL:
    case BYTE:
    case SHORT:
    case CHAR:
    case INT:
        if (initialize)
            execute.push(0);
        break;
    case LONG:
        if (initialize)
            execute.push(0L);
        break;
    case FLOAT:
        if (initialize)
            execute.push(0.0F);
        break;
    case DOUBLE:
        if (initialize)
            execute.push(0.0);
        break;
    default:
        if (initialize)
            execute.visitInsn(Opcodes.ACONST_NULL);
    }

    execute.visitVarInsn(type.getOpcode(Opcodes.ISTORE), slot);

    return null;
}

From source file:org.elasticsearch.painless.Writer.java

License:Apache License

@Override
public Void visitNull(final NullContext ctx) {
    final Metadata.ExpressionMetadata nullemd = metadata.getExpressionMetadata(ctx);

    execute.visitInsn(Opcodes.ACONST_NULL);
    checkWriteCast(nullemd);//  w  w  w  .j  a v a 2 s  .  c om
    checkWriteBranch(ctx);

    return null;
}

From source file:org.elasticsearch.painless.WriterExpression.java

License:Apache License

void processNull(final NullContext ctx) {
    final ExpressionMetadata nullemd = metadata.getExpressionMetadata(ctx);

    execute.visitInsn(Opcodes.ACONST_NULL);
    caster.checkWriteCast(nullemd);/*from  w ww . j  a v  a 2s.  c o m*/
    utility.checkWriteBranch(ctx);
}

From source file:org.elasticsearch.painless.WriterStatement.java

License:Apache License

void processSource(final SourceContext ctx) {
    final StatementMetadata sourcesmd = metadata.getStatementMetadata(ctx);

    for (final StatementContext sctx : ctx.statement()) {
        writer.visit(sctx);/*ww w  . j av  a 2  s .  co m*/
    }

    if (!sourcesmd.methodEscape) {
        execute.visitInsn(Opcodes.ACONST_NULL);
        execute.returnValue();
    }
}

From source file:org.elasticsearch.painless.WriterStatement.java

License:Apache License

void processDeclvar(final DeclvarContext ctx) {
    final ExpressionMetadata declvaremd = metadata.getExpressionMetadata(ctx);
    final org.objectweb.asm.Type type = declvaremd.to.type;
    final Sort sort = declvaremd.to.sort;
    int slot = (int) declvaremd.postConst;

    final ExpressionContext exprctx = ctx.expression();
    final boolean initialize = exprctx == null;

    if (!initialize) {
        writer.visit(exprctx);/*from   w w w.j a  va2s . c o  m*/
    }

    switch (sort) {
    case VOID:
        throw new IllegalStateException(WriterUtility.error(ctx) + "Unexpected state.");
    case BOOL:
    case BYTE:
    case SHORT:
    case CHAR:
    case INT:
        if (initialize)
            execute.push(0);
        break;
    case LONG:
        if (initialize)
            execute.push(0L);
        break;
    case FLOAT:
        if (initialize)
            execute.push(0.0F);
        break;
    case DOUBLE:
        if (initialize)
            execute.push(0.0);
        break;
    default:
        if (initialize)
            execute.visitInsn(Opcodes.ACONST_NULL);
    }

    execute.visitVarInsn(type.getOpcode(Opcodes.ISTORE), slot);
}

From source file:org.elasticsearch.plan.a.Writer.java

License:Apache License

@Override
public Void visitSource(final SourceContext ctx) {
    final StatementMetadata sourcesmd = metadata.getStatementMetadata(ctx);

    for (final StatementContext sctx : ctx.statement()) {
        visit(sctx);/*ww w. j  av  a 2 s .c  om*/
    }

    if (!sourcesmd.methodEscape) {
        execute.visitInsn(Opcodes.ACONST_NULL);
        execute.returnValue();
    }

    return null;
}

Example usage for org.objectweb.asm Opcodes ACONST_NULL

Introduction

Prototype

Usage