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87 lines
2.8 KiB
87 lines
2.8 KiB
/* InstructionBlock (c) 1998 Jochen Hoenicke
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*
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* You may distribute under the terms of the GNU General Public License.
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*
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* IN NO EVENT SHALL JOCHEN HOENICKE BE LIABLE TO ANY PARTY FOR DIRECT,
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* INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
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* THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF JOCHEN HOENICKE
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* HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* JOCHEN HOENICKE SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
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* BASIS, AND JOCHEN HOENICKE HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
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* SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* $Id$
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*/
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package jode.flow;
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import jode.Expression;
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import jode.TabbedPrintWriter;
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import jode.LocalInfo;
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import jode.LocalStoreOperator;
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import jode.ComplexExpression;
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/**
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* This is the structured block for atomic instructions.
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*/
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public class InstructionBlock extends InstructionContainer {
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public InstructionBlock(Expression instr) {
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super(instr);
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}
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public InstructionBlock(Expression instr, Jump jump) {
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super(instr, jump);
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}
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/**
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* Tells if this block needs braces when used in a if or while block.
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* @return true if this block should be sorrounded by braces.
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*/
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public boolean needsBraces() {
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return declare != null && !declare.isEmpty();
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}
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/**
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* True if this is a declaration.
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*/
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private boolean isDeclaration = false;
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public void dumpDeclaration(TabbedPrintWriter writer, LocalInfo local)
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throws java.io.IOException
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{
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if (instr instanceof ComplexExpression
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&& instr.getOperator() instanceof LocalStoreOperator
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&& ((LocalStoreOperator) instr.getOperator()).getLocalInfo()
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== local.getLocalInfo()) {
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isDeclaration = true;
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} else
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super.dumpDeclaration(writer, local);
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}
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public void dumpSource(TabbedPrintWriter writer)
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throws java.io.IOException
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{
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isDeclaration = false;
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super.dumpSource(writer);
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}
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public void dumpInstruction(TabbedPrintWriter writer)
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throws java.io.IOException
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{
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if (isDeclaration) {
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LocalInfo local = ((LocalStoreOperator) instr.getOperator())
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.getLocalInfo();
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Expression expr =
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((ComplexExpression) instr).getSubExpressions()[0];
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expr.makeInitializer();
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writer.println(local.getType() + " " + local.getName() + " = "
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+ expr.simplify().toString() + ";");
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} else {
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if (instr.getType() != jode.Type.tVoid)
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writer.print("PUSH ");
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writer.println(instr.simplify().toString()+";");
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}
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}
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}
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