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Clean up

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master
Apoorva Ranade 5 years ago
parent 1944e1dad5
commit 2db4a635f8
1 changed files with 10 additions and 72 deletions
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src/main/java/chocopy/pa3/CodeGenImpl.java
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@ -349,7 +349,8 @@ public class CodeGenImpl extends CodeGenBase
} else if (expr.getInferredType().equals(Type.BOOL_TYPE)) { } else if (expr.getInferredType().equals(Type.BOOL_TYPE)) {
if ((functionId.name.equals("print"))&&(formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) || formalParamInfo.getVarType().equals(Type.BOOL_TYPE))) { if ((functionId.name.equals("print"))&&(formalParamInfo.getVarType().equals(Type.OBJECT_TYPE) || formalParamInfo.getVarType().equals(Type.BOOL_TYPE))) {
backend.emitJAL(makeboolLabel, "Box boolean"); backend.emitJAL(makeboolLabel, "Box boolean");
} else { }
else {
// FIXME: passed argument does not match formal parameter // FIXME: passed argument does not match formal parameter
} }
} }
@ -434,7 +435,7 @@ public class CodeGenImpl extends CodeGenBase
@Override @Override
public Register analyze(StringLiteral node) public Register analyze(StringLiteral node)
{ {
System.out.println("Inside StringLiteral: "); System.out.println("Inside StringLiteral: ");
//backend.emitLW(T6, FP, 0, "Inside StringLiteral: "); //backend.emitLW(T6, FP, 0, "Inside StringLiteral: ");
Label l = constants.getStrConstant(node.value); Label l = constants.getStrConstant(node.value);
backend.emitLA(Register.A0, l, "Load string literal"); backend.emitLA(Register.A0, l, "Load string literal");
@ -605,70 +606,7 @@ public class CodeGenImpl extends CodeGenBase
backend.emitLocalLabel(ln, "End of if statement"); backend.emitLocalLabel(ln, "End of if statement");
return null; return null;
} }
public void copyList(Register dest, Register src, Register size) {
Label begin = generateLocalLabel();
Label exit = generateLocalLabel();
backend.emitLocalLabel(begin, "Start loop for copying");
backend.emitBEQ(size, Register.ZERO, exit, "Exit when copy completes");
backend.emitLW(Register.A2, src, 0, "Load Word from Source");
backend.emitSW(Register.A2, dest, 0, "Store Word in Destination");
backend.emitADDI(src, src, wordSize, "Increment Source Address");
backend.emitADDI(dest, dest, wordSize, "Increment Destination Address");
backend.emitADDI(size, size, -1, "Decrement size left to copy");
backend.emitJ(begin, "Jump to beginning of loop");
backend.emitLocalLabel(exit,"Exit loop for copying");
}
private Register addLists() {
// Check for Null operands
Label label = generateLocalLabel();
backend.emitBNEZ(Register.A0, label, "Left operand is NULL");
backend.emitBNEZ(Register.T0, label, "Right operand is NULL");
backend.emitJAL(errorNone, "Operand is Null");
backend.emitLocalLabel(label, "List Addition");
//Get lengths of the two lists
backend.emitLW(Register.T1, Register.A0,0,"Load length of first list");
backend.emitLW(Register.T2, Register.T0,0,"Load length of second list");
backend.emitADD(Register.A1, Register.T2,Register.T1,"Add lengths of lists");
backend.emitMV(Register.T3,Register.A1,"Store total length combined list");
backend.emitADDI(Register.A1, Register.A1,1,"Add 1 to store length of new list");
//Store address and length of lists on stack
backend.emitSW(Register.A0, Register.FP, -sp_off*wordSize, "Store address of first list");
incSp(1);
backend.emitSW(Register.T0, Register.FP, -sp_off*wordSize, "Store address of second list");
incSp(1);
backend.emitSW(Register.T3, Register.FP, -sp_off*wordSize, "Store length of combined list");
incSp(1);
//Allocate space on heap
backend.emitLA(Register.A0, listClass.getPrototypeLabel(), "Load empty list");
backend.emitJAL(objectAllocResizeLabel, "Allocate list");
backend.emitMV(Register.A1, Register.A0, "Store address of allocated space");
backend.emitMV(Register.T5, Register.A1, "Make a copy of address of allocated space");
//Pop length and address from stack
sp_off--;
backend.emitLW(Register.T3, Register.FP, -sp_off*wordSize, "Load length of combined list");
sp_off--;
backend.emitLW(Register.T0, Register.FP, -sp_off*wordSize, "Load address of second list");
sp_off--;
backend.emitLW(Register.A0, Register.FP, -sp_off*wordSize, "Load address of first list");
backend.emitLW(Register.T1, Register.A0,0,"Load length of first list");
backend.emitLW(Register.T2, Register.T0,0,"Load length of second list");
//Copy each list in newly allocated space
backend.emitSW(Register.T3,Register.T5,0,"Store length of combined list ");
backend.emitADDI(Register.T5,Register.T5,wordSize,"Increment address");
backend.emitADDI(Register.A0,Register.A0,wordSize,"Increment address");
copyList(Register.T5, Register.A0, Register.T1);
backend.emitADDI(Register.T0,Register.T0,wordSize,"Increment address");
copyList(Register.T5, Register.T0, Register.T2);
backend.emitMV(Register.A0,Register.A1,"Load address of combined list");
return Register.A0;
}
@Override @Override
public Register analyze(BinaryExpr node) public Register analyze(BinaryExpr node)
{ {
@ -751,7 +689,6 @@ public class CodeGenImpl extends CodeGenBase
{ {
// Comparison operators // Comparison operators
String comment="Operator: "+operator;
if(operator.equals("==")) if(operator.equals("=="))
{ {
node.right.dispatch(this); node.right.dispatch(this);
@ -907,7 +844,7 @@ public class CodeGenImpl extends CodeGenBase
public Register analyze(Identifier node) public Register analyze(Identifier node)
{ {
//backend.emitLW(T6, FP, 0, "Inside Identifier: "); //backend.emitLW(T6, FP, 0, "Inside Identifier: ");
System.out.println(node.getInferredType());
Identifier targetID = (Identifier)node; Identifier targetID = (Identifier)node;
Object var = getVar(targetID); Object var = getVar(targetID);
if(var instanceof StackVarRuntimeInfo){ if(var instanceof StackVarRuntimeInfo){
@ -1076,12 +1013,13 @@ public class CodeGenImpl extends CodeGenBase
backend.emitSW(iter, Register.FP, -sp_off*wordSize, "Store index on stack"); backend.emitSW(iter, Register.FP, -sp_off*wordSize, "Store index on stack");
incSp(1); incSp(1);
backend.emitLocalLabel(startLoop, "Start for loop"); backend.emitLocalLabel(startLoop, "Start for loop");
backend.emitLW(iter, Register.FP, -(sp_off-1)*wordSize, "Load index from stack"); sp_off--;
backend.emitLW(l, Register.FP, -(sp_off-2)*wordSize, "Store string location from stack"); backend.emitLW(iter, Register.FP, -(sp_off)*wordSize, "Load index from stack");
backend.emitLW(l, Register.FP, -(sp_off-1)*wordSize, "Store string location from stack");
backend.emitLW(ln, l, getAttrOffset(strClass, "__len__"), "Get attribute __len__"); backend.emitLW(ln, l, getAttrOffset(strClass, "__len__"), "Get attribute __len__");
backend.emitBGEU(iter, ln, endLoop, "Jump to end loop if counter exceeds length"); backend.emitBGEU(iter, ln, endLoop, "Jump to end loop if counter exceeds length");
backend.emitADDI(iter, iter, 1, "Increment counter"); backend.emitADDI(iden, iter, 1, "Increment counter");
backend.emitSW(iter, Register.FP, -sp_off*wordSize, "Store index on stack"); backend.emitSW(iden, Register.FP, -sp_off*wordSize, "Store index on stack");
incSp(1); incSp(1);
backend.emitADDI(iden, iter, 4 * wordSize, "Convert index to offset to char in bytes"); backend.emitADDI(iden, iter, 4 * wordSize, "Convert index to offset to char in bytes");
backend.emitADD(iden, l, iden, "Get pointer to char"); backend.emitADD(iden, l, iden, "Get pointer to char");

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