Skip to content

Commit ed21d35

Browse files
mrhappyasthmamrhappyasthma
committed
Added skeleton file for IRVisitor
1 parent c0196ac commit ed21d35

2 files changed

Lines changed: 313 additions & 1 deletion

File tree

‎MiniJavaCompiler.java‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -59,7 +59,8 @@ public static void main(String[] args)
5959
}
6060

6161
//Generate IR
62-
//...TODO
62+
IRVisitor intermediateVisitor = new IRVisitor(symbolTable);
63+
intermediateVisitor.visit(program);
6364
}
6465
}
6566
}

‎visitor/IRVisitor.java‎

Lines changed: 311 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,311 @@
1+
//Mark Klara
2+
//mak241@pitt.edu
3+
//CS 1622 - Project 3
4+
//IRVisitor.java
5+
6+
package visitor;
7+
8+
import syntaxtree.*;
9+
import symboltable.*;
10+
import IR.*;
11+
12+
public class IRVisitor implements Visitor
13+
{
14+
private Scope currentScope;
15+
private int blockNumber;
16+
17+
public IRVisitor(Scope symbolTable)
18+
{
19+
currentScope = symbolTable;
20+
blockNumber = 0;
21+
}
22+
23+
//Helper function to create unique numbers (as strings) for the blocks
24+
public String nextBlockNumber()
25+
{
26+
blockNumber++;
27+
return ("" + blockNumber);
28+
}
29+
30+
// MainClass m;
31+
// ClassDeclList cl;
32+
public void visit(Program n)
33+
{
34+
n.m.accept(this);
35+
36+
for ( int i = 0; i < n.cl.size(); i++ )
37+
{
38+
n.cl.elementAt(i).accept(this);
39+
}
40+
}
41+
42+
// Identifier i1,i2;
43+
// Statement s;
44+
public void visit(MainClass n)
45+
{
46+
currentScope = currentScope.enterScope(n.i1.toString()); //Enter class
47+
currentScope = currentScope.enterScope("main");
48+
49+
n.i1.accept(this);
50+
n.i2.accept(this);
51+
n.s.accept(this);
52+
53+
currentScope = currentScope.exitScope(); //Exit "main" method
54+
currentScope = currentScope.exitScope(); //Exit class
55+
}
56+
57+
// Identifier i;
58+
// VarDeclList vl;
59+
// MethodDeclList ml;
60+
public void visit(ClassDeclSimple n)
61+
{
62+
currentScope = currentScope.enterScope(n.i.toString()); //Enter class
63+
64+
n.i.accept(this);
65+
for ( int i = 0; i < n.vl.size(); i++ )
66+
{
67+
n.vl.elementAt(i).accept(this);
68+
}
69+
for ( int i = 0; i < n.ml.size(); i++ )
70+
{
71+
n.ml.elementAt(i).accept(this);
72+
}
73+
74+
currentScope = currentScope.exitScope(); //Exit class
75+
}
76+
77+
// Identifier i;
78+
// Identifier j;
79+
// VarDeclList vl;
80+
// MethodDeclList ml;
81+
public void visit(ClassDeclExtends n)
82+
{
83+
currentScope = currentScope.enterScope(n.i.toString()); //Enter class
84+
85+
n.i.accept(this);
86+
n.j.accept(this);
87+
88+
for ( int i = 0; i < n.vl.size(); i++ )
89+
{
90+
n.vl.elementAt(i).accept(this);
91+
}
92+
for ( int i = 0; i < n.ml.size(); i++ )
93+
{
94+
n.ml.elementAt(i).accept(this);
95+
}
96+
97+
currentScope = currentScope.exitScope(); //Exit class
98+
}
99+
100+
// Type t;
101+
// Identifier i;
102+
public void visit(VarDecl n)
103+
{
104+
n.t.accept(this);
105+
n.i.accept(this);
106+
}
107+
108+
// Type t;
109+
// Identifier i;
110+
// FormalList fl;
111+
// VarDeclList vl;
112+
// StatementList sl;
113+
// Exp e;
114+
public void visit(MethodDecl n)
115+
{
116+
currentScope = currentScope.enterScope(n.i.toString()); //Enter method
117+
118+
n.t.accept(this);
119+
n.i.accept(this);
120+
121+
for ( int i = 0; i < n.fl.size(); i++ )
122+
{
123+
n.fl.elementAt(i).accept(this);
124+
}
125+
for ( int i = 0; i < n.vl.size(); i++ )
126+
{
127+
n.vl.elementAt(i).accept(this);
128+
}
129+
for ( int i = 0; i < n.sl.size(); i++ )
130+
{
131+
n.sl.elementAt(i).accept(this);
132+
}
133+
n.e.accept(this);
134+
135+
currentScope = currentScope.exitScope(); //Exit method
136+
}
137+
138+
// Type t;
139+
// Identifier i;
140+
public void visit(Formal n)
141+
{
142+
n.t.accept(this);
143+
n.i.accept(this);
144+
}
145+
146+
public void visit(IntArrayType n)
147+
{}
148+
149+
public void visit(BooleanType n)
150+
{}
151+
152+
public void visit(IntegerType n)
153+
{}
154+
155+
// String s;
156+
public void visit(IdentifierType n)
157+
{}
158+
159+
// StatementList sl;
160+
public void visit(Block n)
161+
{
162+
String blockNum = nextBlockNumber();
163+
currentScope = currentScope.enterScope(blockNum); //Enter block
164+
165+
for ( int i = 0; i < n.sl.size(); i++ )
166+
{
167+
n.sl.elementAt(i).accept(this);
168+
}
169+
170+
currentScope = currentScope.exitScope(); //Exit block
171+
}
172+
173+
// Exp e;
174+
// Statement s1,s2;
175+
public void visit(If n)
176+
{
177+
n.e.accept(this);
178+
n.s1.accept(this);
179+
n.s2.accept(this);
180+
}
181+
182+
// Exp e;
183+
// Statement s;
184+
public void visit(While n)
185+
{
186+
n.e.accept(this);
187+
n.s.accept(this);
188+
}
189+
190+
// Exp e;
191+
public void visit(Print n)
192+
{
193+
n.e.accept(this);
194+
}
195+
196+
// Identifier i;
197+
// Exp e;
198+
public void visit(Assign n)
199+
{
200+
n.i.accept(this);
201+
n.e.accept(this);
202+
}
203+
204+
// Identifier i;
205+
// Exp e1,e2;
206+
public void visit(ArrayAssign n)
207+
{
208+
n.i.accept(this);
209+
n.e1.accept(this);
210+
n.e2.accept(this);
211+
}
212+
213+
// Exp e1,e2;
214+
public void visit(And n)
215+
{
216+
n.e1.accept(this);
217+
n.e2.accept(this);
218+
}
219+
220+
// Exp e1,e2;
221+
public void visit(LessThan n)
222+
{
223+
n.e1.accept(this);
224+
n.e2.accept(this);
225+
}
226+
227+
// Exp e1,e2;
228+
public void visit(Plus n)
229+
{
230+
n.e1.accept(this);
231+
n.e2.accept(this);
232+
}
233+
234+
// Exp e1,e2;
235+
public void visit(Minus n)
236+
{
237+
n.e1.accept(this);
238+
n.e2.accept(this);
239+
}
240+
241+
// Exp e1,e2;
242+
public void visit(Times n)
243+
{
244+
n.e1.accept(this);
245+
n.e2.accept(this);
246+
}
247+
248+
// Exp e1,e2;
249+
public void visit(ArrayLookup n)
250+
{
251+
n.e1.accept(this);
252+
n.e2.accept(this);
253+
}
254+
255+
// Exp e;
256+
public void visit(ArrayLength n)
257+
{
258+
n.e.accept(this);
259+
}
260+
261+
// Exp e;
262+
// Identifier i;
263+
// ExpList el;
264+
public void visit(Call n)
265+
{
266+
n.e.accept(this);
267+
n.i.accept(this);
268+
269+
for ( int i = 0; i < n.el.size(); i++ )
270+
{
271+
n.el.elementAt(i).accept(this);
272+
}
273+
}
274+
275+
// int i;
276+
public void visit(IntegerLiteral n)
277+
{}
278+
279+
public void visit(True n)
280+
{}
281+
282+
public void visit(False n)
283+
{}
284+
285+
// String s;
286+
public void visit(IdentifierExp n)
287+
{}
288+
289+
public void visit(This n)
290+
{}
291+
292+
// Exp e;
293+
public void visit(NewArray n)
294+
{
295+
n.e.accept(this);
296+
}
297+
298+
// Identifier i;
299+
public void visit(NewObject n)
300+
{}
301+
302+
// Exp e;
303+
public void visit(Not n)
304+
{
305+
n.e.accept(this);
306+
}
307+
308+
// String s;
309+
public void visit(Identifier n)
310+
{}
311+
}

0 commit comments

Comments
 (0)