This commit was manufactured by cvs2svn to create tag 'buildscript'.

[IRC.git] / Robust / src / IR / Tree / SemanticCheck.java

diff --git a/Robust/src/IR/Tree/SemanticCheck.java b/Robust/src/IR/Tree/SemanticCheck.java
deleted file mode 100644 (file)
index fcec66a..0000000
--- a/Robust/src/IR/Tree/SemanticCheck.java
+++ /dev/null
@@ -1,193 +0,0 @@
-package IR.Tree;
-
-import java.util.*;
-import IR.*;
-
-public class SemanticCheck {
-    State state;
-    TypeUtil typeutil;
-
-    public SemanticCheck(State state, TypeUtil tu) {
-       this.state=state;
-       this.typeutil=tu;
-    }
-
-    public void semanticCheck() {
-       SymbolTable classtable=state.getClassSymbolTable();
-       Iterator it=classtable.getDescriptorsIterator();
-       while(it.hasNext()) {
-           ClassDescriptor cd=(ClassDescriptor)it.next();
-           System.out.println("Checking class: "+cd);
-           for(Iterator field_it=cd.getFields();field_it.hasNext();) {
-               FieldDescriptor fd=(FieldDescriptor)field_it.next();
-               System.out.println("Checking field: "+fd);
-               checkField(cd,fd);
-           }
-
-           for(Iterator method_it=cd.getMethods();method_it.hasNext();) {
-               MethodDescriptor md=(MethodDescriptor)method_it.next();
-               checkMethod(cd,md);
-           }
-       }
-    }
-
-    public void checkTypeDescriptor(TypeDescriptor td) {
-       if (td.isPrimitive())
-           return; /* Done */
-       if (td.isClass()) {
-           String name=td.toString();
-           ClassDescriptor field_cd=(ClassDescriptor)state.getClassSymbolTable().get(name);
-           if (field_cd==null)
-               throw new Error("Undefined class "+name);
-           td.setClassDescriptor(field_cd);
-           return;
-       }
-       throw new Error();
-    }
-
-    public void checkField(ClassDescriptor cd, FieldDescriptor fd) {
-       checkTypeDescriptor(fd.getType());
-    }
-
-    public void checkMethod(ClassDescriptor cd, MethodDescriptor md) {
-       /* Check return type */
-       if (!md.getReturnType().isVoid())
-           checkTypeDescriptor(md.getReturnType());
-       for(int i=0;i<md.numParameters();i++) {
-           TypeDescriptor param_type=md.getParamType(i);
-           checkTypeDescriptor(param_type);
-       }
-       BlockNode bn=state.getMethodBody(md);
-       /* Link the naming environments */
-       md.getParameterTable().setParent(cd.getFieldTable());
-       checkBlockNode(md, md.getParameterTable(),bn);
-    }
-    
-    public void checkBlockNode(MethodDescriptor md, SymbolTable nametable, BlockNode bn) {
-       /* Link in the naming environment */
-       bn.getVarTable().setParent(nametable);
-       for(int i=0;i<bn.size();i++) {
-           BlockStatementNode bsn=bn.get(i);
-           checkBlockStatementNode(md, bn.getVarTable(),bsn);
-       }
-    }
-    
-    public void checkBlockStatementNode(MethodDescriptor md, SymbolTable nametable, BlockStatementNode bsn) {
-       switch(bsn.kind()) {
-       case Kind.BlockExpressionNode:
-           checkBlockExpressionNode(md, nametable,(BlockExpressionNode)bsn);
-           return;
-
-       case Kind.DeclarationNode:
-           checkDeclarationNode(md, nametable, (DeclarationNode)bsn);
-           return;
-           
-       case Kind.IfStatementNode:
-           checkIfStatementNode(md, nametable, (IfStatementNode)bsn);
-           return;
-           
-       case Kind.LoopNode:
-           checkLoopNode(md, nametable, (LoopNode)bsn);
-           return;
-           
-       case Kind.ReturnNode:
-           checkReturnNode(md, nametable, (ReturnNode)bsn);
-           return;
-
-       case Kind.SubBlockNode:
-           checkSubBlockNode(md, nametable, (SubBlockNode)bsn);
-           return;
-       }
-       throw new Error();
-    }
-
-    void checkBlockExpressionNode(MethodDescriptor md, SymbolTable nametable, BlockExpressionNode ben) {
-       checkExpressionNode(md, nametable, ben.getExpression(), null);
-    }
-
-    void checkDeclarationNode(MethodDescriptor md, SymbolTable nametable,  DeclarationNode dn) {
-       VarDescriptor vd=dn.getVarDescriptor();
-       checkTypeDescriptor(vd.getType());
-       Descriptor d=nametable.get(vd.getSymbol());
-       if ((d==null)||
-           (d instanceof FieldDescriptor)) {
-           nametable.add(vd);
-       } else
-           throw new Error(vd.getSymbol()+" defined a second time");
-       if (dn.getExpression()!=null)
-           checkExpressionNode(md, nametable, dn.getExpression(), vd.getType());
-    }
-    
-    void checkSubBlockNode(MethodDescriptor md, SymbolTable nametable, SubBlockNode sbn) {
-       checkBlockNode(md, nametable, sbn.getBlockNode());
-    }
-
-    void checkReturnNode(MethodDescriptor md, SymbolTable nametable, ReturnNode rn) {
-       checkExpressionNode(md, nametable, rn.getReturnExpression(), md.getReturnType());
-    }
-
-    void checkIfStatementNode(MethodDescriptor md, SymbolTable nametable, IfStatementNode isn) {
-       checkExpressionNode(md, nametable, isn.getCondition(), new TypeDescriptor(TypeDescriptor.BOOLEAN));
-       checkBlockNode(md, nametable, isn.getTrueBlock());
-       checkBlockNode(md, nametable, isn.getFalseBlock());
-    }
-    
-    void checkExpressionNode(MethodDescriptor md, SymbolTable nametable, ExpressionNode en, TypeDescriptor td) {
-       switch(en.kind()) {
-        case Kind.AssignmentNode:
-            checkAssignmentNode(md,nametable,(AssignmentNode)en,td);
-           return;
-        case Kind.CastNode:
-           checkCastNode(md,nametable,(CastNode)en,td);
-           return;
-        case Kind.CreateObjectNode:
-           checkCreateObjectNode(md,nametable,(CreateObjectNode)en,td);
-           return;
-        case Kind.FieldAccessNode:
-           checkFieldAccessNode(md,nametable,(FieldAccessNode)en,td);
-           return;
-        case Kind.LiteralNode:
-           checkLiteralNode(md,nametable,(LiteralNode)en,td);
-           return;
-        case Kind.MethodInvokeNode:
-           checkMethodInvokeNode(md,nametable,(MethodInvokeNode)en,td);
-           return;
-        case Kind.NameNode:
-           checkNameNode(md,nametable,(NameNode)en,td);
-           return;
-        case Kind.OpNode:
-            checkOpNode(md,nametable,(OpNode)en,td);
-           return;
-        }
-       throw new Error();
-    }
-
-    void checkAssignmentNode(MethodDescriptor md, SymbolTable nametable, AssignmentNode an, TypeDescriptor td) {
-       
-    }
-
-    void checkCastNode(MethodDescriptor md, SymbolTable nametable, CastNode cn, TypeDescriptor td) {
-    }
-
-    void checkCreateObjectNode(MethodDescriptor md, SymbolTable nametable, CreateObjectNode con, TypeDescriptor td) {
-    }
-
-    void checkFieldAccessNode(MethodDescriptor md, SymbolTable nametable, FieldAccessNode fan, TypeDescriptor td) {
-    }
-
-    void checkLiteralNode(MethodDescriptor md, SymbolTable nametable, LiteralNode ln, TypeDescriptor td) {
-       
-    }
-
-    void checkMethodInvokeNode(MethodDescriptor md, SymbolTable nametable, MethodInvokeNode min, TypeDescriptor td) {
-    }
-
-    void checkNameNode(MethodDescriptor md, SymbolTable nametable, NameNode nn, TypeDescriptor td) {
-    }
-
-    void checkOpNode(MethodDescriptor md, SymbolTable nametable, OpNode on,TypeDescriptor td) {
-    }
-
-    void checkLoopNode(MethodDescriptor md, SymbolTable nametable, LoopNode ln) {
-    }
-}