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Using ProgramValueIterator instead of custom loop.

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This commit is contained in:
Jesper Gravgaard 2018-07-22 16:41:19 +09:00
parent 81e214cee3
commit 4b4c6f5364
3 changed files with 23 additions and 68 deletions
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7
src/main/java/dk/camelot64/kickc/model/VariableReferenceInfos.java
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@ -11,7 +11,12 @@ import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Map;
/** Cached information about which variables are defined/referenced/used in statements / blocks. */
/** Cached information about which variables/constants are defined/referenced/used in which statements / blocks / symbols .
* <ul>
* <li><i>Defined</i> means the variable/constant receives its value in a specific statement (or symbol for named constants) </li>
* <li><i>Used</i> means the value of the variable/constant is used in a specific statement (or symbol for named constants) </li>
* <li><i>Referenced</i> means the variable/constant is either defined or referenced in a specific statement (or symbol for named constants) </li>
* </ul>*/
public class VariableReferenceInfos {
/** Variables referenced in each block. */

10
src/main/java/dk/camelot64/kickc/model/iterator/ProgramValue.java
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@ -532,20 +532,20 @@ public abstract class ProgramValue {
/** A generic Value. */
public static class GenericValue extends ProgramValue {
private ConstantValue constantValue;
private RValue rValue;
public GenericValue(ConstantValue constantValue) {
this.constantValue = constantValue;
public GenericValue(RValue rValue) {
this.rValue = rValue;
}
@Override
public RValue get() {
return constantValue;
return rValue;
}
@Override
public void set(RValue value) {
this.constantValue = (ConstantValue) value;
this.rValue = (ConstantValue) value;
}
}
}

74
src/main/java/dk/camelot64/kickc/passes/PassNVariableReferenceInfos.java
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@ -1,10 +1,13 @@
package dk.camelot64.kickc.passes;
import dk.camelot64.kickc.model.*;
import dk.camelot64.kickc.model.symbols.SymbolVariable;
import dk.camelot64.kickc.model.values.*;
import dk.camelot64.kickc.model.ControlFlowBlock;
import dk.camelot64.kickc.model.Program;
import dk.camelot64.kickc.model.VariableReferenceInfos;
import dk.camelot64.kickc.model.iterator.ProgramValue;
import dk.camelot64.kickc.model.iterator.ProgramValueIterator;
import dk.camelot64.kickc.model.statements.*;
import dk.camelot64.kickc.model.symbols.ConstantVar;
import dk.camelot64.kickc.model.values.*;
import java.util.*;
@ -56,66 +59,13 @@ public class PassNVariableReferenceInfos extends Pass2Base {
* @return All referenced variables / constants
*/
private static Collection<SymbolVariableRef> getReferenced(RValue rValue) {
if(rValue == null) {
return new ArrayList<>();
} else if(rValue instanceof ConstantBinary) {
Collection<SymbolVariableRef> used = new LinkedHashSet<>();
used.addAll(getReferenced(((ConstantBinary) rValue).getLeft()));
used.addAll(getReferenced(((ConstantBinary) rValue).getRight()));
return used;
} else if(rValue instanceof ConstantArrayList) {
Collection<SymbolVariableRef> used = new LinkedHashSet<>();
for(ConstantValue elem : ((ConstantArrayList) rValue).getElements()) {
used.addAll(getReferenced(elem));
Collection<SymbolVariableRef> referenced = new LinkedHashSet<>();
ProgramValueIterator.execute(new ProgramValue.GenericValue(rValue), (programValue, currentStmt, stmtIt, currentBlock) -> {
if(programValue.get() instanceof SymbolVariableRef) {
referenced.add((SymbolVariableRef) programValue.get());
}
return used;
} else if(rValue instanceof ArrayFilled) {
return getReferenced(((ArrayFilled) rValue).getSize());
} else if(rValue instanceof ConstantArrayFilled) {
return getReferenced(((ConstantArrayFilled) rValue).getSize());
} else if(rValue instanceof ConstantUnary) {
return getReferenced(((ConstantUnary) rValue).getOperand());
} else if(rValue instanceof ConstantRef) {
return Arrays.asList((SymbolVariableRef) rValue);
} else if(rValue instanceof ConstantString) {
return new ArrayList<>();
} else if(rValue instanceof ConstantInteger) {
return new ArrayList<>();
} else if(rValue instanceof ConstantBool) {
return new ArrayList<>();
} else if(rValue instanceof ConstantChar) {
return new ArrayList<>();
} else if(rValue instanceof ConstantPointer) {
return new ArrayList<>();
} else if(rValue instanceof PointerDereferenceSimple) {
return getReferenced(((PointerDereferenceSimple) rValue).getPointer());
} else if(rValue instanceof PointerDereferenceIndexed) {
Collection<SymbolVariableRef> used = new LinkedHashSet<>();
used.addAll(getReferenced(((PointerDereferenceIndexed) rValue).getPointer()));
used.addAll(getReferenced(((PointerDereferenceIndexed) rValue).getIndex()));
return used;
} else if(rValue instanceof VariableRef) {
return Arrays.asList((SymbolVariableRef) rValue);
} else if(rValue instanceof ValueList) {
LinkedHashSet<SymbolVariableRef> used = new LinkedHashSet<>();
for(RValue value : ((ValueList) rValue).getList()) {
used.addAll(getReferenced(value));
}
return used;
} else if(rValue instanceof CastValue) {
return getReferenced(((CastValue) rValue).getValue());
} else if(rValue instanceof ConstantCastValue) {
return getReferenced(((ConstantCastValue) rValue).getValue());
} else if(rValue instanceof ConstantVarPointer) {
return getReferenced(((ConstantVarPointer) rValue).getToVar());
} else if(rValue instanceof RangeValue) {
Collection<SymbolVariableRef> used = new LinkedHashSet<>();
used.addAll(getReferenced(((RangeValue) rValue).getRangeFirst()));
used.addAll(getReferenced(((RangeValue) rValue).getRangeLast()));
return used;
} else {
throw new RuntimeException("Unhandled RValue type " + rValue);
}
}, null, null, null);
return referenced;
}
/** Create defined/referenced maps */