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PrintVisitor.java
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PrintVisitor.java
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class PrintVisitor implements CCALParserVisitor {
public Object visit(SimpleNode node, Object data) {
throw new RuntimeException("Visit SimpleNode");
}
public Object visit(ASTPROG node, Object data) {
node.childrenAccept(this, data);
return data;
}
public Object visit(ASTvarDecl node, Object data) {
System.out.print("var ");
node.jjtGetChild(0).jjtAccept(this, data); // identifier
System.out.print(':');
node.jjtGetChild(1).jjtAccept(this, data); // type
System.out.println(';');
return data;
}
public Object visit(ASTconstDecl node, Object data) {
System.out.print("const ");
node.jjtGetChild(0).jjtAccept(this, data); // identifier
System.out.print(':');
node.jjtGetChild(1).jjtAccept(this, data); // type
System.out.print(" = ");
node.jjtGetChild(2).jjtAccept(this, data); // value
System.out.println(';');
return data;
}
public Object visit(ASTbinOpExp node, Object data) {
node.childrenAccept(this, data);
return data;
}
public Object visit(ASTfunc node, Object data) {
for (int i = 0; i < node.jjtGetNumChildren(); i++) {
node.jjtGetChild(i).jjtAccept(this, data);
System.out.print(" ");
}
System.out.println();
return data;
}
public Object visit(ASTfuncBlock node, Object data) {
System.out.println("{");
for (int i = 0; i < node.jjtGetNumChildren(); i++) {
node.jjtGetChild(i).jjtAccept(this, data);
}
System.out.println("}");
return data;
}
public Object visit(ASTfuncReturn node, Object data) {
System.out.print("return (");
node.jjtGetChild(0).jjtAccept(this, data);
System.out.println(");");
return data;
}
public Object visit(ASTtype node, Object data) {
System.out.print(node.value);
return data;
}
public Object visit(ASTparamList node, Object data) {
System.out.print("(");
node.jjtGetChild(0).jjtAccept(this, data);
for (int i = 1; i < node.jjtGetNumChildren(); i++) {
System.out.print(", ");
node.jjtGetChild(i).jjtAccept(this, data);
}
System.out.println(")");
return data;
}
public Object visit(ASTparam node, Object data) {
node.jjtGetChild(0).jjtAccept(this, data);
System.out.print(":");
node.jjtGetChild(1).jjtAccept(this, data);
return data;
}
public Object visit(ASTmain node, Object data) {
System.out.println("main");
System.out.println('{');
node.childrenAccept(this, data);
System.out.println('}');
return data;
}
public Object visit(ASTassign node, Object data) {
node.jjtGetChild(0).jjtAccept(this, data);
System.out.print(" = ");
node.jjtGetChild(1).jjtAccept(this, data);
System.out.println(";");
return data;
}
public Object visit(ASTfuncCall node, Object data) {
System.out.println("funcCall");
return data;
}
public Object visit(ASTargList node, Object data) {
System.out.print('(');
node.jjtGetChild(0).jjtAccept(this, data);
for (int i = 1; i < node.jjtGetNumChildren(); i++) {
System.out.print(", ");
node.jjtGetChild(i).jjtAccept(this, data);
}
System.out.print(')');
return data;
}
public Object visit(ASTstmSkip node, Object data) {
System.out.println("skip;");
return data;
}
public Object visit(ASTifBlock node, Object data) {
System.out.print("if ");
node.jjtGetChild(0).jjtAccept(this, data);
System.out.println('{');
for (int i = 1; i < node.jjtGetNumChildren(); i++)
node.jjtGetChild(i).jjtAccept(this, data);
System.out.println('}');
return data;
}
public Object visit(ASTelseBlock node, Object data) {
System.out.println("else");
System.out.println('{');
node.childrenAccept(this, data);
System.out.println('}');
return data;
}
public Object visit(ASTwhileBlock node, Object data) {
System.out.print("while ");
node.jjtGetChild(0).jjtAccept(this, data);
System.out.println('{');
for (int i = 1; i < node.jjtGetNumChildren(); i++)
node.jjtGetChild(i).jjtAccept(this, data);
System.out.println('}');
return data;
}
public Object visit(ASTparenExp node, Object data) {
System.out.println("parenExp");
return data;
}
public Object visit(ASTnegIdentifier node, Object data) {
System.out.print("-");
node.jjtGetChild(0).jjtAccept(this, data);
return data;
}
public Object visit(ASTnum node, Object data) {
System.out.print(node.value);
return data;
}
public Object visit(ASTbool node, Object data) {
System.out.print(node.value);
return data;
}
public Object visit(ASTbinOp node, Object data) {
System.out.print(node.value);
return data;
}
public Object visit(ASTnotCond node, Object data) {
System.out.print("~" + node.value);
return data;
}
public Object visit(ASTparenCond node, Object data) {
System.out.println("parenCond");
return data;
}
public Object visit(ASToperatorCond node, Object data) {
node.childrenAccept(this, data);
return data;
}
public Object visit(ASTandOrOp node, Object data) {
System.out.print(" " + node.value + " ");
return data;
}
public Object visit(ASTandOrCond node, Object data) {
node.childrenAccept(this, data);
System.out.println();
return data;
}
public Object visit(ASTcompOp node, Object data) {
System.out.print(" " + node.value + " ");
return data;
}
public Object visit(ASTidentifier node, Object data) {
System.out.print(node.value);
return data;
}
}