8 public BuildIR(State state) {
11 public void buildtree() {
12 for(Iterator it=state.parsetrees.iterator();it.hasNext();) {
13 ParseNode pn=(ParseNode)it.next();
18 /** Parse the classes in this file */
19 public void parseFile(ParseNode pn) {
20 ParseNode tpn=pn.getChild("type_declaration_list");
22 ParseNodeVector pnv=tpn.getChildren();
23 for(int i=0;i<pnv.size();i++) {
24 ParseNode type_pn=pnv.elementAt(i);
25 if (isEmpty(type_pn)) /* Skip the semicolon */
27 ClassDescriptor cn=parseTypeDecl(type_pn);
33 public ClassDescriptor parseTypeDecl(ParseNode pn) {
34 if (isNode(pn, "class_declaration")) {
35 ClassDescriptor cn=new ClassDescriptor(pn.getChild("name").getTerminal());
36 if (!isEmpty(pn.getChild("super").getTerminal())) {
37 /* parse superclass name */
38 ParseNode snn=pn.getChild("super").getChild("type").getChild("class").getChild("name");
39 NameDescriptor nd=parseName(snn);
40 cn.setSuper(nd.toString());
42 if (!cn.getSymbol().equals(TypeUtil.ObjectClass))
43 cn.setSuper(TypeUtil.ObjectClass);
45 cn.setModifiers(parseModifiersList(pn.getChild("modifiers")));
46 parseClassBody(cn, pn.getChild("classbody"));
48 } else throw new Error();
51 private void parseClassBody(ClassDescriptor cn, ParseNode pn) {
52 ParseNode decls=pn.getChild("class_body_declaration_list");
54 ParseNodeVector pnv=decls.getChildren();
55 for(int i=0;i<pnv.size();i++) {
56 ParseNode decl=pnv.elementAt(i);
57 if (isNode(decl,"member")) {
58 parseClassMember(cn,decl);
59 } else if (isNode(decl,"constructor")) {
60 parseConstructorDecl(cn,decl.getChild("constructor_declaration"));
61 } else if (isNode(decl,"block")) {
62 } else throw new Error();
67 private void parseClassMember(ClassDescriptor cn, ParseNode pn) {
68 ParseNode fieldnode=pn.getChild("field");
70 if (fieldnode!=null) {
71 parseFieldDecl(cn,fieldnode.getChild("field_declaration"));
74 ParseNode methodnode=pn.getChild("method");
75 if (methodnode!=null) {
76 parseMethodDecl(cn,methodnode.getChild("method_declaration"));
82 private TypeDescriptor parseTypeDescriptor(ParseNode pn) {
83 ParseNode tn=pn.getChild("type");
84 String type_st=tn.getTerminal();
85 if(type_st.equals("byte")) {
86 return state.getTypeDescriptor(TypeDescriptor.BYTE);
87 } else if(type_st.equals("short")) {
88 return state.getTypeDescriptor(TypeDescriptor.SHORT);
89 } else if(type_st.equals("boolean")) {
90 return state.getTypeDescriptor(TypeDescriptor.BOOLEAN);
91 } else if(type_st.equals("int")) {
92 return state.getTypeDescriptor(TypeDescriptor.INT);
93 } else if(type_st.equals("long")) {
94 return state.getTypeDescriptor(TypeDescriptor.LONG);
95 } else if(type_st.equals("char")) {
96 return state.getTypeDescriptor(TypeDescriptor.CHAR);
97 } else if(type_st.equals("float")) {
98 return state.getTypeDescriptor(TypeDescriptor.FLOAT);
99 } else if(type_st.equals("double")) {
100 return state.getTypeDescriptor(TypeDescriptor.DOUBLE);
101 } else if(type_st.equals("class")) {
102 ParseNode nn=tn.getChild("class");
103 return state.getTypeDescriptor(parseName(nn.getChild("name")));
109 private NameDescriptor parseName(ParseNode nn) {
110 ParseNode base=nn.getChild("base");
111 ParseNode id=nn.getChild("identifier");
113 return new NameDescriptor(id.getTerminal());
114 return new NameDescriptor(parseName(base.getChild("name")),id.getTerminal());
118 private void parseFieldDecl(ClassDescriptor cn,ParseNode pn) {
119 ParseNode mn=pn.getChild("modifier");
120 Modifiers m=parseModifiersList(mn);
122 ParseNode tn=pn.getChild("type");
123 TypeDescriptor t=parseTypeDescriptor(tn);
124 ParseNode vn=pn.getChild("variables").getChild("variable_declarators_list");
125 ParseNodeVector pnv=vn.getChildren();
126 for(int i=0;i<pnv.size();i++) {
127 ParseNode vardecl=pnv.elementAt(i);
128 String identifier=vardecl.getChild("single").getTerminal();
129 ParseNode epn=vardecl.getChild("initializer");
131 ExpressionNode en=null;
133 en=parseExpression(epn.getFirstChild());
135 cn.addField(new FieldDescriptor(m,t,identifier, en));
140 private ExpressionNode parseExpression(ParseNode pn) {
141 if (isNode(pn,"assignment"))
142 return parseAssignmentExpression(pn);
143 else if (isNode(pn,"logical_or")||isNode(pn,"logical_and")||
144 isNode(pn,"bitwise_or")||isNode(pn,"bitwise_xor")||
145 isNode(pn,"bitwise_and")||isNode(pn,"equal")||
146 isNode(pn,"not_equal")||isNode(pn,"comp_lt")||
147 isNode(pn,"comp_lte")||isNode(pn,"comp_gt")||
148 isNode(pn,"comp_gte")||isNode(pn,"leftshift")||
149 isNode(pn,"rightshift")||isNode(pn,"sub")||
150 isNode(pn,"add")||isNode(pn,"mult")||
151 isNode(pn,"div")||isNode(pn,"mod")) {
152 ParseNodeVector pnv=pn.getChildren();
153 ParseNode left=pnv.elementAt(0);
154 ParseNode right=pnv.elementAt(1);
155 Operation op=new Operation(pn.getLabel());
156 return new OpNode(parseExpression(left),parseExpression(right),op);
157 } else if (isNode(pn,"unaryplus")||
158 isNode(pn,"unaryminus")||
159 isNode(pn,"postinc")||
160 isNode(pn,"postdec")||
161 isNode(pn,"preinc")||
162 isNode(pn,"predec")) {
163 ParseNode left=pn.getFirstChild();
164 Operation op=new Operation(pn.getLabel());
165 return new OpNode(parseExpression(left),op);
166 } else if (isNode(pn,"literal")) {
167 String literaltype=pn.getTerminal();
168 ParseNode literalnode=pn.getChild(literaltype);
169 Object literal_obj=literalnode.getLiteral();
170 return new LiteralNode(literaltype, literal_obj);
171 } else if (isNode(pn,"createobject")) {
172 TypeDescriptor td=parseTypeDescriptor(pn);
173 Vector args=parseArgumentList(pn);
174 CreateObjectNode con=new CreateObjectNode(td);
175 for(int i=0;i<args.size();i++) {
176 con.addArgument((ExpressionNode)args.get(i));
179 } else if (isNode(pn,"name")) {
180 NameDescriptor nd=parseName(pn);
181 return new NameNode(nd);
182 } else if (isNode(pn,"this")) {
183 NameDescriptor nd=new NameDescriptor("this");
184 return new NameNode(nd);
185 } else if (isNode(pn,"methodinvoke1")) {
186 NameDescriptor nd=parseName(pn.getChild("name"));
187 Vector args=parseArgumentList(pn);
188 MethodInvokeNode min=new MethodInvokeNode(nd);
189 for(int i=0;i<args.size();i++) {
190 min.addArgument((ExpressionNode)args.get(i));
193 } else if (isNode(pn,"methodinvoke2")) {
194 String methodid=pn.getChild("id").getTerminal();
195 ExpressionNode exp=parseExpression(pn.getChild("base").getFirstChild());
196 Vector args=parseArgumentList(pn);
197 MethodInvokeNode min=new MethodInvokeNode(methodid,exp);
198 for(int i=0;i<args.size();i++) {
199 min.addArgument((ExpressionNode)args.get(i));
202 } else if (isNode(pn,"fieldaccess")) {
203 ExpressionNode en=parseExpression(pn.getChild("base").getFirstChild());
204 String fieldname=pn.getChild("field").getTerminal();
205 return new FieldAccessNode(en,fieldname);
206 } else if (isNode(pn,"cast1")) {
207 return new CastNode(parseTypeDescriptor(pn.getChild("type")),parseExpression(pn.getChild("exp").getFirstChild()));
208 } else if (isNode(pn,"cast2")) {
209 return new CastNode(parseExpression(pn.getChild("type").getFirstChild()),parseExpression(pn.getChild("exp").getFirstChild()));
211 System.out.println("---------------------");
212 System.out.println(pn.PPrint(3,true));
217 private Vector parseArgumentList(ParseNode pn) {
218 Vector arglist=new Vector();
219 ParseNode an=pn.getChild("argument_list");
220 if (an==null) /* No argument list */
222 ParseNodeVector anv=an.getChildren();
223 for(int i=0;i<anv.size();i++) {
224 arglist.add(parseExpression(anv.elementAt(i)));
229 private ExpressionNode parseAssignmentExpression(ParseNode pn) {
230 AssignOperation ao=new AssignOperation(pn.getChild("op").getTerminal());
231 ParseNodeVector pnv=pn.getChild("args").getChildren();
233 AssignmentNode an=new AssignmentNode(parseExpression(pnv.elementAt(0)),parseExpression(pnv.elementAt(1)),ao);
238 private void parseMethodDecl(ClassDescriptor cn, ParseNode pn) {
239 ParseNode headern=pn.getChild("method_header");
240 ParseNode bodyn=pn.getChild("body");
241 MethodDescriptor md=parseMethodHeader(headern);
242 BlockNode bn=parseBlock(bodyn);
244 state.addTreeCode(md,bn);
247 private void parseConstructorDecl(ClassDescriptor cn, ParseNode pn) {
248 ParseNode mn=pn.getChild("modifiers");
249 Modifiers m=parseModifiersList(mn);
250 ParseNode cdecl=pn.getChild("constructor_declarator");
251 String name=cdecl.getChild("name").getChild("identifier").getTerminal();
252 MethodDescriptor md=new MethodDescriptor(m, name);
253 ParseNode paramnode=cdecl.getChild("parameters");
254 parseParameterList(md,paramnode);
255 ParseNode bodyn0=pn.getChild("body");
256 ParseNode bodyn=bodyn0.getChild("constructor_body");
259 BlockNode bn=parseBlock(bodyn);
260 state.addTreeCode(md,bn);
264 public BlockNode parseBlock(ParseNode pn) {
265 if (isEmpty(pn.getTerminal()))
266 return new BlockNode();
267 ParseNode bsn=pn.getChild("block_statement_list");
268 return parseBlockHelper(bsn);
271 private BlockNode parseBlockHelper(ParseNode pn) {
272 ParseNodeVector pnv=pn.getChildren();
273 BlockNode bn=new BlockNode();
274 for(int i=0;i<pnv.size();i++) {
275 Vector bsv=parseBlockStatement(pnv.elementAt(i));
276 for(int j=0;j<bsv.size();j++) {
277 bn.addBlockStatement((BlockStatementNode)bsv.get(j));
283 public BlockNode parseSingleBlock(ParseNode pn) {
284 BlockNode bn=new BlockNode();
285 Vector bsv=parseBlockStatement(pn);
286 for(int j=0;j<bsv.size();j++) {
287 bn.addBlockStatement((BlockStatementNode)bsv.get(j));
289 bn.setStyle(BlockNode.NOBRACES);
293 public Vector parseBlockStatement(ParseNode pn) {
294 Vector blockstatements=new Vector();
295 if (isNode(pn,"local_variable_declaration")) {
296 TypeDescriptor t=parseTypeDescriptor(pn);
297 ParseNode vn=pn.getChild("variable_declarators_list");
298 ParseNodeVector pnv=vn.getChildren();
299 for(int i=0;i<pnv.size();i++) {
300 ParseNode vardecl=pnv.elementAt(i);
301 String identifier=vardecl.getChild("single").getTerminal();
302 ParseNode epn=vardecl.getChild("initializer");
304 ExpressionNode en=null;
306 en=parseExpression(epn.getFirstChild());
308 blockstatements.add(new DeclarationNode(new VarDescriptor(t,identifier),en));
310 } else if (isNode(pn,"nop")) {
312 } else if (isNode(pn,"expression")) {
313 blockstatements.add(new BlockExpressionNode(parseExpression(pn.getFirstChild())));
314 } else if (isNode(pn,"ifstatement")) {
315 blockstatements.add(new IfStatementNode(parseExpression(pn.getChild("condition").getFirstChild()),
316 parseSingleBlock(pn.getChild("statement").getFirstChild()),
317 pn.getChild("else_statement")!=null?parseSingleBlock(pn.getChild("else_statement").getFirstChild()):null));
318 } else if (isNode(pn,"return")) {
319 if (isEmpty(pn.getTerminal()))
320 blockstatements.add(new ReturnNode());
322 ExpressionNode en=parseExpression(pn.getFirstChild());
323 blockstatements.add(new ReturnNode(en));
325 } else if (isNode(pn,"block_statement_list")) {
326 BlockNode bn=parseBlockHelper(pn);
327 blockstatements.add(new SubBlockNode(bn));
328 } else if (isNode(pn,"empty")) {
330 } else if (isNode(pn,"statement_expression_list")) {
331 ParseNodeVector pnv=pn.getChildren();
332 BlockNode bn=new BlockNode();
333 for(int i=0;i<pnv.size();i++) {
334 ExpressionNode en=parseExpression(pnv.elementAt(i));
335 blockstatements.add(new BlockExpressionNode(en));
337 bn.setStyle(BlockNode.EXPRLIST);
338 } else if (isNode(pn,"forstatement")) {
339 BlockNode init=parseSingleBlock(pn.getChild("initializer").getFirstChild());
340 BlockNode update=parseSingleBlock(pn.getChild("update").getFirstChild());
341 ExpressionNode condition=parseExpression(pn.getChild("condition").getFirstChild());
342 BlockNode body=parseSingleBlock(pn.getChild("statement").getFirstChild());
343 blockstatements.add(new LoopNode(init,condition,update,body));
344 } else if (isNode(pn,"whilestatement")) {
345 ExpressionNode condition=parseExpression(pn.getChild("condition").getFirstChild());
346 BlockNode body=parseSingleBlock(pn.getChild("statement").getFirstChild());
347 blockstatements.add(new LoopNode(condition,body,LoopNode.WHILELOOP));
348 } else if (isNode(pn,"dowhilestatement")) {
349 ExpressionNode condition=parseExpression(pn.getChild("condition").getFirstChild());
350 BlockNode body=parseSingleBlock(pn.getChild("statement").getFirstChild());
351 blockstatements.add(new LoopNode(condition,body,LoopNode.DOWHILELOOP));
353 System.out.println("---------------");
354 System.out.println(pn.PPrint(3,true));
357 return blockstatements;
360 public MethodDescriptor parseMethodHeader(ParseNode pn) {
361 ParseNode mn=pn.getChild("modifiers");
362 Modifiers m=parseModifiersList(mn);
364 ParseNode tn=pn.getChild("returntype");
365 TypeDescriptor returntype;
367 returntype=parseTypeDescriptor(tn);
369 returntype=new TypeDescriptor(TypeDescriptor.VOID);
371 ParseNode pmd=pn.getChild("method_declarator");
372 String name=pmd.getChild("name").getTerminal();
373 MethodDescriptor md=new MethodDescriptor(m, returntype, name);
375 ParseNode paramnode=pmd.getChild("parameters");
376 parseParameterList(md,paramnode);
380 public void parseParameterList(MethodDescriptor md, ParseNode pn) {
381 ParseNode paramlist=pn.getChild("formal_parameter_list");
384 ParseNodeVector pnv=paramlist.getChildren();
385 for(int i=0;i<pnv.size();i++) {
386 ParseNode paramn=pnv.elementAt(i);
387 TypeDescriptor type=parseTypeDescriptor(paramn);
388 String paramname=paramn.getChild("single").getTerminal();
389 md.addParameter(type,paramname);
393 public Modifiers parseModifiersList(ParseNode pn) {
394 Modifiers m=new Modifiers();
395 ParseNode modlist=pn.getChild("modifier_list");
397 ParseNodeVector pnv=modlist.getChildren();
398 for(int i=0;i<pnv.size();i++) {
399 ParseNode modn=pnv.elementAt(i);
400 if (isNode(modn,"public"))
401 m.addModifier(Modifiers.PUBLIC);
402 if (isNode(modn,"protected"))
403 m.addModifier(Modifiers.PROTECTED);
404 if (isNode(modn,"private"))
405 m.addModifier(Modifiers.PRIVATE);
406 if (isNode(modn,"static"))
407 m.addModifier(Modifiers.STATIC);
408 if (isNode(modn,"final"))
409 m.addModifier(Modifiers.FINAL);
410 if (isNode(modn,"native"))
411 m.addModifier(Modifiers.NATIVE);
417 private boolean isNode(ParseNode pn, String label) {
418 if (pn.getLabel().equals(label))
423 private static boolean isEmpty(ParseNode pn) {
424 if (pn.getLabel().equals("empty"))
430 private static boolean isEmpty(String s) {
431 if (s.equals("empty"))
437 /** Throw an exception if something is unexpected */
438 private void check(ParseNode pn, String label) {
440 throw new Error(pn+ "IE: Expected '" + label + "', got null");
442 if (! pn.getLabel().equals(label)) {
443 throw new Error(pn+ "IE: Expected '" + label + "', got '"+pn.getLabel()+"'");