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@ -38,6 +38,12 @@ public class InstructionBlock extends InstructionContainer { |
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*/ |
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*/ |
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LocalInfo pushedLocal = null; |
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LocalInfo pushedLocal = null; |
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/** |
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* Tells if this expression is a initializing declaration. This |
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* can only be set to true and then never be reset. It is changed |
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* by makeDeclaration. */ |
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boolean isDeclaration = false; |
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public InstructionBlock(Expression instr) { |
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public InstructionBlock(Expression instr) { |
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super(instr); |
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super(instr); |
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} |
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} |
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@ -91,27 +97,31 @@ public class InstructionBlock extends InstructionContainer { |
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} |
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} |
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/** |
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/** |
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* True if this is a declaration. |
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* Make the declarations, i.e. initialize the declare variable |
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* to correct values. This will declare every variable that |
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* is marked as used, but not done. |
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* @param done The set of the already declare variables. |
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*/ |
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*/ |
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private boolean isDeclaration = false; |
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public void makeDeclaration(VariableSet done) { |
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if (instr.getOperator() instanceof LocalStoreOperator) { |
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public void dumpDeclaration(TabbedPrintWriter writer, LocalInfo local) |
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LocalInfo local = |
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throws java.io.IOException |
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((LocalStoreOperator) instr.getOperator()).getLocalInfo(); |
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{ |
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if (!done.contains(local)) { |
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if (instr instanceof ComplexExpression |
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/* Special case: This is a variable assignment, and |
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&& instr.getOperator() instanceof LocalStoreOperator |
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* the variable has not been declared before. We can |
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&& ((LocalStoreOperator) instr.getOperator()).getLocalInfo() |
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* change this to a initializing variable declaration. |
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== local.getLocalInfo()) { |
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*/ |
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isDeclaration = true; |
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isDeclaration = true; |
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} else |
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if (instr instanceof ComplexExpression) |
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super.dumpDeclaration(writer, local); |
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((ComplexExpression) instr) |
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} |
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.getSubExpressions()[0].makeInitializer(); |
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done.addElement(local); |
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public void dumpSource(TabbedPrintWriter writer) |
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super.makeDeclaration(done); |
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throws java.io.IOException |
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done.removeElement(local); |
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{ |
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return; |
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isDeclaration = false; |
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} |
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super.dumpSource(writer); |
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} |
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super.makeDeclaration(done); |
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} |
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} |
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public void dumpInstruction(TabbedPrintWriter writer) |
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public void dumpInstruction(TabbedPrintWriter writer) |
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@ -120,16 +130,11 @@ public class InstructionBlock extends InstructionContainer { |
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if (isDeclaration) { |
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if (isDeclaration) { |
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LocalInfo local = ((LocalStoreOperator) instr.getOperator()) |
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LocalInfo local = ((LocalStoreOperator) instr.getOperator()) |
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.getLocalInfo(); |
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.getLocalInfo(); |
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Expression expr = |
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writer.println(local.getType().getHint() + " " + instr); |
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((ComplexExpression) instr).getSubExpressions()[0]; |
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expr.makeInitializer(); |
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writer.println(local.getType().getHint() + " " |
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+ local.getName() + " = " |
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+ expr.simplify().toString() + ";"); |
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} else { |
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} else { |
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if (instr.getType() != Type.tVoid) |
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if (instr.getType() != Type.tVoid) |
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writer.print("PUSH "); |
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writer.print("PUSH "); |
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writer.println(instr.simplify().toString()+";"); |
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writer.println(instr.toString()+";"); |
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} |
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} |
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} |
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} |
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} |
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} |
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