+++ /dev/null
-package IR.Tree;
-import IR.*;
-
-public class BuildIR {
- State state;
- public BuildIR(State state) {
- this.state=state;
- }
- public void buildtree() {
- ParseNode pn=state.parsetree;
- FileNode fn=parseFile(pn);
- System.out.println(fn.printNode());
- }
-
- /** Parse the classes in this file */
- public FileNode parseFile(ParseNode pn) {
- FileNode fn=new FileNode();
- ParseNode tpn=pn.getChild("type_declaration_list");
- if (tpn!=null) {
- ParseNodeVector pnv=tpn.getChildren();
- for(int i=0;i<pnv.size();i++) {
- ParseNode type_pn=pnv.elementAt(i);
- if (isEmpty(type_pn)) /* Skip the semicolon */
- continue;
- ClassNode cn=parseTypeDecl(type_pn);
- fn.addClass(cn);
- }
- }
- return fn;
- }
-
- public ClassNode parseTypeDecl(ParseNode pn) {
- if (isNode(pn, "class_declaration")) {
- ClassNode cn=new ClassNode();
- cn.setName(pn.getChild("name").getTerminal());
- if (!isEmpty(pn.getChild("super").getTerminal())) {
- /* parse superclass name */
- }
- cn.setModifiers(parseModifiersList(pn.getChild("modifiers")));
- parseClassBody(cn, pn.getChild("classbody"));
- return cn;
- } else throw new Error();
- }
-
- private void parseClassBody(ClassNode cn, ParseNode pn) {
- ParseNode decls=pn.getChild("class_body_declaration_list");
- if (decls!=null) {
- ParseNodeVector pnv=decls.getChildren();
- for(int i=0;i<pnv.size();i++) {
- ParseNode decl=pnv.elementAt(i);
- if (isNode(decl,"member")) {
- parseClassMember(cn,decl);
- } else if (isNode(decl,"constructor")) {
- } else if (isNode(decl,"block")) {
- } else throw new Error();
- }
- }
- }
-
- private void parseClassMember(ClassNode cn, ParseNode pn) {
- ParseNode fieldnode=pn.getChild("field");
-
- if (fieldnode!=null) {
- parseFieldDecl(cn,fieldnode.getChild("field_declaration"));
- return;
- }
- ParseNode methodnode=pn.getChild("method");
- if (methodnode!=null) {
- parseMethodDecl(cn,methodnode);
- return;
- }
- throw new Error();
- }
-
- private TypeDescriptor parseTypeDescriptor(ParseNode pn) {
- ParseNode tn=pn.getChild("type");
- String type_st=tn.getTerminal();
- if(type_st.equals("byte")) {
- return state.getTypeDescriptor(TypeDescriptor.BYTE);
- } else if(type_st.equals("short")) {
- return state.getTypeDescriptor(TypeDescriptor.SHORT);
- } else if(type_st.equals("int")) {
- return state.getTypeDescriptor(TypeDescriptor.INT);
- } else if(type_st.equals("long")) {
- return state.getTypeDescriptor(TypeDescriptor.LONG);
- } else if(type_st.equals("char")) {
- return state.getTypeDescriptor(TypeDescriptor.CHAR);
- } else if(type_st.equals("float")) {
- return state.getTypeDescriptor(TypeDescriptor.FLOAT);
- } else if(type_st.equals("double")) {
- return state.getTypeDescriptor(TypeDescriptor.DOUBLE);
- } else if(type_st.equals("class")) {
- ParseNode nn=tn.getChild("class");
- return state.getTypeDescriptor(parseName(nn));
- } else
- throw new Error();
- }
-
- private NameDescriptor parseName(ParseNode pn) {
- ParseNode nn=pn.getChild("name");
- ParseNode base=nn.getChild("base");
- ParseNode id=nn.getChild("identifier");
-
- if (base==null)
- return new NameDescriptor(id.getTerminal());
-
- return new NameDescriptor(parseName(base),id.getTerminal());
-
- }
-
- private void parseFieldDecl(ClassNode cn,ParseNode pn) {
- ParseNode mn=pn.getChild("modifier");
- Modifiers m=parseModifiersList(mn);
- ParseNode tn=pn.getChild("type");
- TypeDescriptor t=parseTypeDescriptor(tn);
- ParseNode vn=pn.getChild("variables").getChild("variable_declarators_list");
- ParseNodeVector pnv=vn.getChildren();
- for(int i=0;i<pnv.size();i++) {
- ParseNode vardecl=pnv.elementAt(i);
- String identifier=vardecl.getChild("identifier").getChild("single").getTerminal();
- ParseNode epn=vardecl.getChild("initializer");
-
- ExpressionNode en=null;
- if (epn!=null)
- en=parseExpression(epn.getFirstChild());
-
- cn.addField(new FieldDescriptor(m,t,identifier, en));
- }
-
- }
-
- private ExpressionNode parseExpression(ParseNode pn) {
- if (isNode(pn,"assignment"))
- return parseAssignmentExpression(pn);
- else if (isNode(pn,"logical_or")||isNode(pn,"logical_and")||
- isNode(pn,"bitwise_or")||isNode(pn,"bitwise_xor")||
- isNode(pn,"bitwise_and")||isNode(pn,"equal")||
- isNode(pn,"not_equal")||isNode(pn,"comp_lt")||
- isNode(pn,"comp_lte")||isNode(pn,"comp_gt")||
- isNode(pn,"comp_gte")||isNode(pn,"leftshift")||
- isNode(pn,"rightshift")||isNode(pn,"sub")||
- isNode(pn,"add")||isNode(pn,"mult")||
- isNode(pn,"div")||isNode(pn,"mod")) {
- ParseNodeVector pnv=pn.getChildren();
- ParseNode left=pnv.elementAt(0);
- ParseNode right=pnv.elementAt(1);
- Operation op=new Operation(pn.getLabel());
- return new OpNode(parseExpression(left),parseExpression(right),op);
- } else if (isNode(pn,"unaryplus")||
- isNode(pn,"unaryminus")||
- isNode(pn,"postinc")||
- isNode(pn,"postdec")||
- isNode(pn,"preinc")||
- isNode(pn,"predec")) {
- ParseNode left=pn.getFirstChild();
- Operation op=new Operation(pn.getLabel());
- return new OpNode(parseExpression(left),op);
- } else if (isNode(pn,"literal")) {
- String literaltype=pn.getTerminal();
- ParseNode literalnode=pn.getChild(literaltype);
- Object literal_obj=literalnode.getLiteral();
- return new LiteralNode(literaltype, literal_obj);
- }
- throw new Error();
- }
-
- private ExpressionNode parseAssignmentExpression(ParseNode pn) {
- return null;
- }
-
-
- private void parseMethodDecl(ClassNode cn, ParseNode pn) {
- ParseNode headern=pn.getChild("header");
- ParseNode bodyn=pn.getChild("body");
- MethodDescriptor md=parseMethodHeader(headern);
- }
-
- public MethodDescriptor parseMethodHeader(ParseNode pn) {
- ParseNode mn=pn.getChild("modifier");
- Modifiers m=parseModifiersList(mn);
-
- ParseNode tn=pn.getChild("returntype");
- TypeDescriptor returntype=parseTypeDescriptor(tn);
- MethodDescriptor md=new MethodDescriptor(m, returntype, null);
- return md;
- }
-
- public Modifiers parseModifiersList(ParseNode pn) {
- Modifiers m=new Modifiers();
- ParseNode modlist=pn.getChild("modifier_list");
- if (modlist!=null) {
- ParseNodeVector pnv=modlist.getChildren();
- for(int i=0;i<pnv.size();i++) {
- ParseNode modn=pnv.elementAt(i);
- if (isNode(modn,"public"))
- m.addModifier(Modifiers.PUBLIC);
- if (isNode(modn,"protected"))
- m.addModifier(Modifiers.PROTECTED);
- if (isNode(modn,"private"))
- m.addModifier(Modifiers.PRIVATE);
- if (isNode(modn,"static"))
- m.addModifier(Modifiers.STATIC);
- if (isNode(modn,"final"))
- m.addModifier(Modifiers.FINAL);
- if (isNode(modn,"native"))
- m.addModifier(Modifiers.NATIVE);
- }
- }
- return m;
- }
-
- private boolean isNode(ParseNode pn, String label) {
- if (pn.getLabel().equals(label))
- return true;
- else return false;
- }
-
- private static boolean isEmpty(ParseNode pn) {
- if (pn.getLabel().equals("empty"))
- return true;
- else
- return false;
- }
-
- private static boolean isEmpty(String s) {
- if (s.equals("empty"))
- return true;
- else
- return false;
- }
-
- /** Throw an exception if something is unexpected */
- private void check(ParseNode pn, String label) {
- if (pn == null) {
- throw new Error(pn+ "IE: Expected '" + label + "', got null");
- }
- if (! pn.getLabel().equals(label)) {
- throw new Error(pn+ "IE: Expected '" + label + "', got '"+pn.getLabel()+"'");
- }
- }
-}
projects / IRC.git / blobdiff