bill/ChocoPy
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update CodeGenImpl.java

Browse Source
This commit is contained in:
sunyinqi0508
2021-05-03 17:33:40 +08:00
committed by GitHub
parent 443b61a29f
commit 6890230252
1 changed files with 2 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/main/java/chocopy/pa3/CodeGenImpl.java
+2 -24
View File
@@ -792,30 +792,8 @@ public class CodeGenImpl extends CodeGenBase
@Override
public Register analyze(IndexExpr node)
{
incSp(1);
Register listObj = node.list.dispatch(this);
backend.emitSW(listObj, FP, -sp_off * wordSize, String.format("Push on stack slot %d", sp_off));
Register index = node.index.dispatch(this);
Register vacantReg = (index != A0) ? A0 : A1;
if (node.list.getInferredType().isListType()) {
backend.emitLW(vacantReg, FP, -sp_off * wordSize, String.format("Pop stack slot %d", sp_off));
this.d(vacantReg);
return this.a(vacantReg, index, A0, false);
}else{
this.a(0, vacantReg);
Register a = a(index);
Label ch = generateLocalLabel();
backend.emitLW(a, vacantReg, getAttrOffset(strClass, "__len__"), "Load attribute: __len__");
backend.emitBLTU(index, a, ch, "Ensure 0 <= idx < len");
backend.emitJ(f, "Go to error handler");
backend.emitLocalLabel(ch, "Index within bounds");
this.c(index);
Register a2 = this.a(false);
this.a(1);
return a2;
}
//TODO: Not Implemented
return A0;
}
public Register analyze(MemberExpr node)