// Ast0.Block ---
// Ast0.Stmt[] stmts;
//
// AG:
// code: {stmt.c}
//
static List<IR0.Inst> gen(Ast0.Block n) throws Exception {
List<IR0.Inst> code = new ArrayList<IR0.Inst>();
// ... need code ...
for (Ast0.Stmt s : n.stmts) code.addAll(gen(s));
return code;
}
// Ast0.Assign ---
// Ast0.Id lhs;
// Ast0.Exp rhs;
//
// AG:
// code: rhs.c + "lhs.s = rhs.v"
//
static List<IR0.Inst> gen(Ast0.Assign n) throws Exception {
List<IR0.Inst> code = new ArrayList<IR0.Inst>();
// ... need code ...
CodePack rhs = gen(n.rhs);
code.addAll(rhs.code);
code.add(new IR0.Move(new IR0.Id(n.lhs.nm), rhs.src));
return code;
}
// Ast0.Print ---
// Ast0.Exp arg;
//
// AG:
// code: arg.c + "print (arg.v)"
//
static List<IR0.Inst> gen(Ast0.Print n) throws Exception {
List<IR0.Inst> code = new ArrayList<IR0.Inst>();
// ... need code ...
CodePack arg = gen(n.arg);
code.addAll(arg.code);
code.add(new IR0.Print(arg.src));
return code;
}
// Ast0.Unop ---
// Ast0.UOP op;
// Ast0.Exp e;
//
// AG:
// newTemp: t
// code: e.c + "t = op e.v"
//
static CodePack gen(Ast0.Unop n) throws Exception {
List<IR0.Inst> code = new ArrayList<IR0.Inst>();
// ... need code ...
IR0.Temp temp = new IR0.Temp();
CodePack e = gen(n.e);
code.addAll(e.code);
IR0.UOP op = gen(n.op);
code.add(new IR0.Unop(op, temp, e.src));
return new CodePack(temp, code);
}
// This is a helper used by both the Function and Script cases
private void instrumentStmtList(List<Stmt> stmts) {
// insert the counter initialization statement as the first statement,
// and the counter display as the last statement
stmts.insertChild(init(), 0);
stmts.addChild(display());
// recurse on children
caseASTNode(stmts);
skip.clear();
}
// Ast0.Binop ---
// Ast0.BOP op;
// Ast0.Exp e1,e2;
//
// AG:
// newTemp: t
// code: e1.c + e2.c
// + "t = e1.v op e2.v"
//
static CodePack gen(Ast0.Binop n) throws Exception {
List<IR0.Inst> code = new ArrayList<IR0.Inst>();
// ... need code ...
IR0.Temp temp = new IR0.Temp();
CodePack e1 = gen(n.e1);
CodePack e2 = gen(n.e2);
code.addAll(e1.code);
code.addAll(e2.code);
IR0.BOP op = gen(n.op);
code.add(new IR0.Binop(op, temp, e1.src, e2.src));
return new CodePack(temp, code);
}
// Ast0.If ---
// Ast0.Exp cond;
// Ast0.Stmt s1, s2;
//
// AG:
// newLabel: L1[,L2]
// code: cond.c
// + "if cond.v == false goto L1"
// + s1.c
// [+ "goto L2"]
// + "L1:"
// [+ s2.c]
// [+ "L2:"]
//
static List<IR0.Inst> gen(Ast0.If n) throws Exception {
List<IR0.Inst> code = new ArrayList<IR0.Inst>();
// ... need code ...
IR0.Label L1 = new IR0.Label();
IR0.Label L2 = new IR0.Label();
CodePack cond = gen(n.cond);
code.add(new IR0.LabelDec(L1));
code.addAll(cond.code);
code.add(new IR0.CJump(IR0.ROP.EQ, cond.src, IR0.FALSE, L1));
for (IR0.Inst s : gen(n.s1)) code.add(s);
if (n.s2 != null) code.add(new IR0.Jump(L2));
code.add(new IR0.LabelDec(L1));
if (n.s2 != null) {
for (IR0.Inst s : gen(n.s2)) code.add(s);
code.add(new IR0.LabelDec(L2));
}
return code;
}
public List<Expr> genList(Expr... elements) {
List<Expr> list = new List<Expr>();
for (Expr element : elements) list.add(element);
return list;
}
public <T extends ASTNode> List<T> genList(T... elements) {
List<T> list = new List<T>();
for (T element : elements) list.add(element);
return list;
}
/**
* generate list of {@link Expr} for params
*
* @param params
* @return
*/
public List<Expr> generateArgs(List<ParameterDeclaration> params) {
List<Expr> args = new List<Expr>();
for (int y = 0; y < params.getNumChild(); y++)
args.add(new VarAccess(params.getChild(y).getID()));
return args;
}
// Ast0.Program ---
// Ast0.Stmt[] stmts;
//
// AG:
// code: stmts.c -- append all individual stmt.c
//
public static IR0.Program gen(Ast0.Program n) throws Exception {
List<IR0.Inst> code = new ArrayList<IR0.Inst>();
for (Ast0.Stmt s : n.stmts) code.addAll(gen(s));
return new IR0.Program(code);
}
private java.util.List<ParseName> getSubjects(List<Access> subjectTypes) {
java.util.List<ParseName> types = new ArrayList();
for (int i = 0; i < subjectTypes.getNumChildNoTransform(); i++)
types.add((ParseName) subjectTypes.getChildNoTransform(i));
return types;
}