3 import java.util.Vector;
7 public BuildIR(State state) {
10 public void buildtree() {
11 ParseNode pn=state.parsetree;
15 /** Parse the classes in this file */
16 public void parseFile(ParseNode pn) {
17 ParseNode tpn=pn.getChild("type_declaration_list");
19 ParseNodeVector pnv=tpn.getChildren();
20 for(int i=0;i<pnv.size();i++) {
21 ParseNode type_pn=pnv.elementAt(i);
22 if (isEmpty(type_pn)) /* Skip the semicolon */
24 ClassDescriptor cn=parseTypeDecl(type_pn);
30 public ClassDescriptor parseTypeDecl(ParseNode pn) {
31 if (isNode(pn, "class_declaration")) {
32 ClassDescriptor cn=new ClassDescriptor(pn.getChild("name").getTerminal());
33 if (!isEmpty(pn.getChild("super").getTerminal())) {
34 /* parse superclass name */
35 ParseNode snn=pn.getChild("super").getChild("type").getChild("class").getChild("name");
36 NameDescriptor nd=parseName(snn);
37 cn.setSuper(nd.toString());
39 cn.setModifiers(parseModifiersList(pn.getChild("modifiers")));
40 parseClassBody(cn, pn.getChild("classbody"));
42 } else throw new Error();
45 private void parseClassBody(ClassDescriptor cn, ParseNode pn) {
46 ParseNode decls=pn.getChild("class_body_declaration_list");
48 ParseNodeVector pnv=decls.getChildren();
49 for(int i=0;i<pnv.size();i++) {
50 ParseNode decl=pnv.elementAt(i);
51 if (isNode(decl,"member")) {
52 parseClassMember(cn,decl);
53 } else if (isNode(decl,"constructor")) {
54 } else if (isNode(decl,"block")) {
55 } else throw new Error();
60 private void parseClassMember(ClassDescriptor cn, ParseNode pn) {
61 ParseNode fieldnode=pn.getChild("field");
63 if (fieldnode!=null) {
64 parseFieldDecl(cn,fieldnode.getChild("field_declaration"));
67 ParseNode methodnode=pn.getChild("method");
68 if (methodnode!=null) {
69 parseMethodDecl(cn,methodnode.getChild("method_declaration"));
75 private TypeDescriptor parseTypeDescriptor(ParseNode pn) {
76 ParseNode tn=pn.getChild("type");
77 String type_st=tn.getTerminal();
78 if(type_st.equals("byte")) {
79 return state.getTypeDescriptor(TypeDescriptor.BYTE);
80 } else if(type_st.equals("short")) {
81 return state.getTypeDescriptor(TypeDescriptor.SHORT);
82 } else if(type_st.equals("boolean")) {
83 return state.getTypeDescriptor(TypeDescriptor.BOOLEAN);
84 } else if(type_st.equals("int")) {
85 return state.getTypeDescriptor(TypeDescriptor.INT);
86 } else if(type_st.equals("long")) {
87 return state.getTypeDescriptor(TypeDescriptor.LONG);
88 } else if(type_st.equals("char")) {
89 return state.getTypeDescriptor(TypeDescriptor.CHAR);
90 } else if(type_st.equals("float")) {
91 return state.getTypeDescriptor(TypeDescriptor.FLOAT);
92 } else if(type_st.equals("double")) {
93 return state.getTypeDescriptor(TypeDescriptor.DOUBLE);
94 } else if(type_st.equals("class")) {
95 ParseNode nn=tn.getChild("class");
96 return state.getTypeDescriptor(parseName(nn.getChild("name")));
102 private NameDescriptor parseName(ParseNode nn) {
103 ParseNode base=nn.getChild("base");
104 ParseNode id=nn.getChild("identifier");
106 return new NameDescriptor(id.getTerminal());
107 return new NameDescriptor(parseName(base.getChild("name")),id.getTerminal());
111 private void parseFieldDecl(ClassDescriptor cn,ParseNode pn) {
112 ParseNode mn=pn.getChild("modifier");
113 Modifiers m=parseModifiersList(mn);
115 ParseNode tn=pn.getChild("type");
116 TypeDescriptor t=parseTypeDescriptor(tn);
117 ParseNode vn=pn.getChild("variables").getChild("variable_declarators_list");
118 ParseNodeVector pnv=vn.getChildren();
119 for(int i=0;i<pnv.size();i++) {
120 ParseNode vardecl=pnv.elementAt(i);
121 String identifier=vardecl.getChild("single").getTerminal();
122 ParseNode epn=vardecl.getChild("initializer");
124 ExpressionNode en=null;
126 en=parseExpression(epn.getFirstChild());
128 cn.addField(new FieldDescriptor(m,t,identifier, en));
133 private ExpressionNode parseExpression(ParseNode pn) {
134 if (isNode(pn,"assignment"))
135 return parseAssignmentExpression(pn);
136 else if (isNode(pn,"logical_or")||isNode(pn,"logical_and")||
137 isNode(pn,"bitwise_or")||isNode(pn,"bitwise_xor")||
138 isNode(pn,"bitwise_and")||isNode(pn,"equal")||
139 isNode(pn,"not_equal")||isNode(pn,"comp_lt")||
140 isNode(pn,"comp_lte")||isNode(pn,"comp_gt")||
141 isNode(pn,"comp_gte")||isNode(pn,"leftshift")||
142 isNode(pn,"rightshift")||isNode(pn,"sub")||
143 isNode(pn,"add")||isNode(pn,"mult")||
144 isNode(pn,"div")||isNode(pn,"mod")) {
145 ParseNodeVector pnv=pn.getChildren();
146 ParseNode left=pnv.elementAt(0);
147 ParseNode right=pnv.elementAt(1);
148 Operation op=new Operation(pn.getLabel());
149 return new OpNode(parseExpression(left),parseExpression(right),op);
150 } else if (isNode(pn,"unaryplus")||
151 isNode(pn,"unaryminus")||
152 isNode(pn,"postinc")||
153 isNode(pn,"postdec")||
154 isNode(pn,"preinc")||
155 isNode(pn,"predec")) {
156 ParseNode left=pn.getFirstChild();
157 Operation op=new Operation(pn.getLabel());
158 return new OpNode(parseExpression(left),op);
159 } else if (isNode(pn,"literal")) {
160 String literaltype=pn.getTerminal();
161 ParseNode literalnode=pn.getChild(literaltype);
162 Object literal_obj=literalnode.getLiteral();
163 return new LiteralNode(literaltype, literal_obj);
164 } else if (isNode(pn,"createobject")) {
165 TypeDescriptor td=parseTypeDescriptor(pn);
166 Vector args=parseArgumentList(pn);
167 CreateObjectNode con=new CreateObjectNode(td);
168 for(int i=0;i<args.size();i++) {
169 con.addArgument((ExpressionNode)args.get(i));
172 } else if (isNode(pn,"name")) {
173 NameDescriptor nd=parseName(pn);
174 return new NameNode(nd);
175 } else if (isNode(pn,"this")) {
176 NameDescriptor nd=new NameDescriptor("this");
177 return new NameNode(nd);
178 } else if (isNode(pn,"methodinvoke1")) {
179 NameDescriptor nd=parseName(pn.getChild("name"));
180 Vector args=parseArgumentList(pn);
181 MethodInvokeNode min=new MethodInvokeNode(nd);
182 for(int i=0;i<args.size();i++) {
183 min.addArgument((ExpressionNode)args.get(i));
186 } else if (isNode(pn,"methodinvoke2")) {
187 String methodid=pn.getChild("id").getTerminal();
188 ExpressionNode exp=parseExpression(pn.getChild("base").getFirstChild());
189 Vector args=parseArgumentList(pn);
190 MethodInvokeNode min=new MethodInvokeNode(methodid,exp);
191 for(int i=0;i<args.size();i++) {
192 min.addArgument((ExpressionNode)args.get(i));
195 } else if (isNode(pn,"fieldaccess")) {
196 ExpressionNode en=parseExpression(pn.getChild("base").getFirstChild());
197 String fieldname=pn.getChild("field").getTerminal();
198 return new FieldAccessNode(en,fieldname);
199 } else if (isNode(pn,"cast1")) {
200 return new CastNode(parseTypeDescriptor(pn.getChild("type")),parseExpression(pn.getChild("exp").getFirstChild()));
201 } else if (isNode(pn,"cast2")) {
202 return new CastNode(parseExpression(pn.getChild("type").getFirstChild()),parseExpression(pn.getChild("exp").getFirstChild()));
204 System.out.println("---------------------");
205 System.out.println(pn.PPrint(3,true));
210 private Vector parseArgumentList(ParseNode pn) {
211 Vector arglist=new Vector();
212 ParseNode an=pn.getChild("argument_list");
213 if (an==null) /* No argument list */
215 ParseNodeVector anv=an.getChildren();
216 for(int i=0;i<anv.size();i++) {
217 arglist.add(parseExpression(anv.elementAt(i)));
222 private ExpressionNode parseAssignmentExpression(ParseNode pn) {
223 AssignOperation ao=new AssignOperation(pn.getChild("op").getTerminal());
224 ParseNodeVector pnv=pn.getChild("args").getChildren();
226 AssignmentNode an=new AssignmentNode(parseExpression(pnv.elementAt(0)),parseExpression(pnv.elementAt(1)),ao);
231 private void parseMethodDecl(ClassDescriptor cn, ParseNode pn) {
232 ParseNode headern=pn.getChild("method_header");
233 ParseNode bodyn=pn.getChild("body");
234 MethodDescriptor md=parseMethodHeader(headern);
235 BlockNode bn=parseBlock(bodyn);
237 state.addTreeCode(md,bn);
240 public BlockNode parseBlock(ParseNode pn) {
241 if (isEmpty(pn.getTerminal()))
242 return new BlockNode();
243 ParseNode bsn=pn.getChild("block_statement_list");
244 return parseBlockHelper(bsn);
247 private BlockNode parseBlockHelper(ParseNode pn) {
248 ParseNodeVector pnv=pn.getChildren();
249 BlockNode bn=new BlockNode();
250 for(int i=0;i<pnv.size();i++) {
251 Vector bsv=parseBlockStatement(pnv.elementAt(i));
252 for(int j=0;j<bsv.size();j++) {
253 bn.addBlockStatement((BlockStatementNode)bsv.get(j));
259 public BlockNode parseSingleBlock(ParseNode pn) {
260 BlockNode bn=new BlockNode();
261 Vector bsv=parseBlockStatement(pn);
262 for(int j=0;j<bsv.size();j++) {
263 bn.addBlockStatement((BlockStatementNode)bsv.get(j));
265 bn.setStyle(BlockNode.NOBRACES);
269 public Vector parseBlockStatement(ParseNode pn) {
270 Vector blockstatements=new Vector();
271 if (isNode(pn,"local_variable_declaration")) {
272 TypeDescriptor t=parseTypeDescriptor(pn);
273 ParseNode vn=pn.getChild("variable_declarators_list");
274 ParseNodeVector pnv=vn.getChildren();
275 for(int i=0;i<pnv.size();i++) {
276 ParseNode vardecl=pnv.elementAt(i);
277 String identifier=vardecl.getChild("single").getTerminal();
278 ParseNode epn=vardecl.getChild("initializer");
280 ExpressionNode en=null;
282 en=parseExpression(epn.getFirstChild());
284 blockstatements.add(new DeclarationNode(new VarDescriptor(t,identifier),en));
286 } else if (isNode(pn,"nop")) {
288 } else if (isNode(pn,"expression")) {
289 blockstatements.add(new BlockExpressionNode(parseExpression(pn.getFirstChild())));
290 } else if (isNode(pn,"ifstatement")) {
291 blockstatements.add(new IfStatementNode(parseExpression(pn.getChild("condition").getFirstChild()),
292 parseSingleBlock(pn.getChild("statement").getFirstChild()),
293 pn.getChild("else_statement")!=null?parseSingleBlock(pn.getChild("else_statement").getFirstChild()):null));
294 } else if (isNode(pn,"return")) {
295 if (isEmpty(pn.getTerminal()))
296 blockstatements.add(new ReturnNode());
298 ExpressionNode en=parseExpression(pn.getFirstChild());
299 blockstatements.add(new ReturnNode(en));
301 } else if (isNode(pn,"block_statement_list")) {
302 BlockNode bn=parseBlockHelper(pn);
303 blockstatements.add(new SubBlockNode(bn));
304 } else if (isNode(pn,"empty")) {
306 } else if (isNode(pn,"statement_expression_list")) {
307 ParseNodeVector pnv=pn.getChildren();
308 BlockNode bn=new BlockNode();
309 for(int i=0;i<pnv.size();i++) {
310 ExpressionNode en=parseExpression(pnv.elementAt(i));
311 blockstatements.add(new BlockExpressionNode(en));
313 bn.setStyle(BlockNode.EXPRLIST);
314 } else if (isNode(pn,"forstatement")) {
315 BlockNode init=parseSingleBlock(pn.getChild("initializer").getFirstChild());
316 BlockNode update=parseSingleBlock(pn.getChild("update").getFirstChild());
317 ExpressionNode condition=parseExpression(pn.getChild("condition").getFirstChild());
318 BlockNode body=parseSingleBlock(pn.getChild("statement").getFirstChild());
319 blockstatements.add(new LoopNode(init,condition,update,body));
320 } else if (isNode(pn,"whilestatement")) {
321 ExpressionNode condition=parseExpression(pn.getChild("condition").getFirstChild());
322 BlockNode body=parseSingleBlock(pn.getChild("statement").getFirstChild());
323 blockstatements.add(new LoopNode(condition,body,LoopNode.WHILELOOP));
324 } else if (isNode(pn,"dowhilestatement")) {
325 ExpressionNode condition=parseExpression(pn.getChild("condition").getFirstChild());
326 BlockNode body=parseSingleBlock(pn.getChild("statement").getFirstChild());
327 blockstatements.add(new LoopNode(condition,body,LoopNode.DOWHILELOOP));
329 System.out.println("---------------");
330 System.out.println(pn.PPrint(3,true));
333 return blockstatements;
336 public MethodDescriptor parseMethodHeader(ParseNode pn) {
337 ParseNode mn=pn.getChild("modifiers");
338 Modifiers m=parseModifiersList(mn);
340 ParseNode tn=pn.getChild("returntype");
341 TypeDescriptor returntype;
343 returntype=parseTypeDescriptor(tn);
345 returntype=new TypeDescriptor(TypeDescriptor.VOID);
347 ParseNode pmd=pn.getChild("method_declarator");
348 String name=pmd.getChild("name").getTerminal();
349 MethodDescriptor md=new MethodDescriptor(m, returntype, name);
351 ParseNode paramnode=pmd.getChild("parameters");
352 parseParameterList(md,paramnode);
356 public void parseParameterList(MethodDescriptor md, ParseNode pn) {
357 ParseNode paramlist=pn.getChild("formal_parameter_list");
360 ParseNodeVector pnv=paramlist.getChildren();
361 for(int i=0;i<pnv.size();i++) {
362 ParseNode paramn=pnv.elementAt(i);
363 TypeDescriptor type=parseTypeDescriptor(paramn);
364 String paramname=paramn.getChild("single").getTerminal();
365 md.addParameter(type,paramname);
369 public Modifiers parseModifiersList(ParseNode pn) {
370 Modifiers m=new Modifiers();
371 ParseNode modlist=pn.getChild("modifier_list");
373 ParseNodeVector pnv=modlist.getChildren();
374 for(int i=0;i<pnv.size();i++) {
375 ParseNode modn=pnv.elementAt(i);
376 if (isNode(modn,"public"))
377 m.addModifier(Modifiers.PUBLIC);
378 if (isNode(modn,"protected"))
379 m.addModifier(Modifiers.PROTECTED);
380 if (isNode(modn,"private"))
381 m.addModifier(Modifiers.PRIVATE);
382 if (isNode(modn,"static"))
383 m.addModifier(Modifiers.STATIC);
384 if (isNode(modn,"final"))
385 m.addModifier(Modifiers.FINAL);
386 if (isNode(modn,"native"))
387 m.addModifier(Modifiers.NATIVE);
393 private boolean isNode(ParseNode pn, String label) {
394 if (pn.getLabel().equals(label))
399 private static boolean isEmpty(ParseNode pn) {
400 if (pn.getLabel().equals("empty"))
406 private static boolean isEmpty(String s) {
407 if (s.equals("empty"))
413 /** Throw an exception if something is unexpected */
414 private void check(ParseNode pn, String label) {
416 throw new Error(pn+ "IE: Expected '" + label + "', got null");
418 if (! pn.getLabel().equals(label)) {
419 throw new Error(pn+ "IE: Expected '" + label + "', got '"+pn.getLabel()+"'");