import iotpolicy.tree.ParseNodeVector;
import iotpolicy.tree.ParseNode;
+import java.util.List;
+import java.util.ArrayList;
+
/** Class ParseTreeHandler handles the parse tree generated by the
* parser (and lexer) from the policy file.
- * This class accepts the AST in the form of XMLElement class object.
- * It gives interfaces to extract the 3 sections of a policy file:
- * 1) Interface
- * 2) Capability list
- * 3) Generated interface list
+ * This class accepts the AST in the form of ParseNode and
+ * ParseNodeVector class objects.
+ * It gives interfaces to extract the 2 types of policy file:
+ * 1) Interface and capabilities definition
+ * 2) Generated interface list ("requires" statements)
*
* @author Rahmadi Trimananda <rahmadi.trimananda @ uci.edu>
* @version 1.0
/**
* Class properties
*/
- private ParseNode pn;
+ private ParseNode pnPol; // Policy: interface and capabilities
+ private ParseNode pnReq; // Policy: "requires" statements
private InterfaceDecl intDecl;
private CapabilityDecl capDecl;
private RequiresDecl reqDecl;
*/
public ParseTreeHandler() {
- pn = null;
+ pnPol = null;
+ pnReq = null;
intDecl = new InterfaceDecl();
capDecl = new CapabilityDecl();
reqDecl = new RequiresDecl();
}
- public ParseTreeHandler(String _intFace, ParseNode _pn) {
+ public ParseTreeHandler(String _intFace, ParseNode _pnPol, ParseNode _pnReq) {
- pn = _pn;
+ pnPol = _pnPol;
+ pnReq = _pnReq;
intDecl = new InterfaceDecl(_intFace);
capDecl = new CapabilityDecl(_intFace);
reqDecl = new RequiresDecl(_intFace);
*/
public void processInterfaceDecl() {
- // Get the root - interface list (element 0)
- ParseNodeVector pnv = pn.getChildren();
+ ParseNodeVector pnv = pnPol.getChildren();
ParseNode pnRoot = pnv.elementAt(0);
- // Get the second child of root for "method_list"
ParseNodeVector pnvGen2 = pnRoot.getChildren();
if (pnvGen2.size() == 0) {
throw new Error("ParseTreeHandler: Interface declaration is missing! Please check your policy file...");
}
ParseNode pnGen2 = pnvGen2.elementAt(1);
- // Get the next level child for methods
ParseNodeVector pnvGen3 = pnGen2.getChildren();
- // Loop and extract methods
- for(int i = 0; i < pnvGen3.size(); i++) {
+ for(int i = 0; i < pnvGen3.size(); i++) { // Loop on methods
- // Get the level where label is "method"
ParseNode pnGen3 = pnvGen3.elementAt(i);
- // Get the next level child - method info
ParseNodeVector pnvGen4 = pnGen3.getChildren();
- // Method type
+ // Method type, identifier, and param node
ParseNode pnGen4_type = pnvGen4.elementAt(0);
- // Method identifier
ParseNode pnGen4_ident = pnvGen4.elementAt(1);
- // Add a new method (type and identifier)
- intDecl.addNewMethod(pnGen4_ident.getLiteral().toString(),
- pnGen4_type.getLiteral().toString());
- // Get the next level child - method params
ParseNode pnGen4_params = pnvGen4.elementAt(2);
ParseNodeVector pnvGen5 = pnGen4_params.getChildren();
- for(int j = 0; j < pnvGen5.size(); j++) {
+ // First loop - create a key without spaces, e.g. MethodA(intA,SpeakerB)
+ String methodKey = pnGen4_ident.getLiteral().toString() + "(";
+ List<String> paramTypes = new ArrayList<String>();
+ List<String> params = new ArrayList<String>();
+ for(int j = 0; j < pnvGen5.size(); j++) { // Loop on params
ParseNode pnGen5 = pnvGen5.elementAt(j);
ParseNodeVector pnvGen6 = pnGen5.getChildren();
- // Param type
+ // Param type and identifier
ParseNode pnGen6_type = pnvGen6.elementAt(0);
- // Param identifier
ParseNode pnGen6_ident = pnvGen6.elementAt(1);
- // Add a new method param (type and identifier)
- intDecl.addMethodParam(pnGen4_ident.getLiteral().toString(),
- pnGen6_ident.getLiteral().toString(), pnGen6_type.getLiteral().toString());
+ methodKey = methodKey + pnGen6_type.getLiteral().toString();
+ methodKey = methodKey + pnGen6_ident.getLiteral().toString();
+ // Keep the parameters temporarily
+ paramTypes.add(pnGen6_type.getLiteral().toString());
+ params.add(pnGen6_ident.getLiteral().toString());
+ // Don't add comma for the last parameter
+ if (j != pnvGen5.size() - 1) {
+ methodKey = methodKey + ",";
+ }
+ }
+ methodKey = methodKey + ")";
+ // Add a new method (signature key, identifier, and type)
+ intDecl.addNewMethod(methodKey, pnGen4_ident.getLiteral().toString(),
+ pnGen4_type.getLiteral().toString());
+ // Second loop - add the method parameters
+ for(int j = 0; j < params.size(); j++) {
+ intDecl.addMethodParam(methodKey, params.get(j), paramTypes.get(j));
}
- //System.out.println();
}
}
public void processCapabilityDecl() {
// Get the root - capability list (element 1)
- ParseNodeVector pnv = pn.getChildren();
- ParseNode pnRoot = pnv.elementAt(1);
- // Get the second child of root for "capab_list"
+ ParseNodeVector pnv = pnPol.getChildren();
+ ParseNode pnRoot = pnv.elementAt(0);
ParseNodeVector pnvGen2 = pnRoot.getChildren();
- if (pnvGen2.size() == 0) {
+ // Get the third child of root for "capab_list"
+ ParseNode pnGen2 = pnvGen2.elementAt(2);
+ ParseNodeVector pnvGen3 = pnGen2.getChildren();
+ if (pnvGen3.size() == 0) {
throw new Error("ParseTreeHandler: Capability declaration is missing! Please check your policy file...");
}
// Iterate over the list of capabilities
- for(int i = 0; i < pnvGen2.size(); i++) {
+ for(int i = 0; i < pnvGen3.size(); i++) {
- ParseNode pnGen2 = pnvGen2.elementAt(i);
+ ParseNode pnGen3 = pnvGen3.elementAt(i);
// Get the next level child for capabilities
- ParseNodeVector pnvGen3 = pnGen2.getChildren();
+ ParseNodeVector pnvGen4 = pnGen3.getChildren();
// Get the capability name, e.g. ImageCapture for Camera.ImageCapture
- ParseNode pnGen3_capab = pnvGen3.elementAt(1);
+ ParseNode pnGen4_capab = pnvGen4.elementAt(0);
// Add new capability
- capDecl.addNewCapability(pnGen3_capab.getLiteral().toString());
+ capDecl.addNewCapability(pnGen4_capab.getLiteral().toString());
// Get the capability contents, i.e. descriptions and methods
- ParseNode pnGen3_capab_cont = pnvGen3.elementAt(2);
- ParseNodeVector pnvGen4 = pnGen3_capab_cont.getChildren();
+ ParseNode pnGen4_capab_cont = pnvGen4.elementAt(1);
+ ParseNodeVector pnvGen5 = pnGen4_capab_cont.getChildren();
// Iterate over the list of capability contents
- for(int j = 0; j < pnvGen4.size(); j++) {
+ for(int j = 0; j < pnvGen5.size(); j++) {
- ParseNode pnGen4 = pnvGen4.elementAt(j);
- ParseNodeVector pnvGen5 = pnGen4.getChildren();
- ParseNode pnGen5 = pnvGen5.elementAt(0);
+ ParseNode pnGen5 = pnvGen5.elementAt(j);
+ ParseNodeVector pnvGen6 = pnGen5.getChildren();
+ ParseNode pnGen6 = pnvGen6.elementAt(0);
// Check the label and separate between description (capab_desc)
// and method name (capab_ident)
- String label = pnGen5.getLabel().toString();
+ String label = pnGen6.getLabel().toString();
if (label.equals("capab_desc")) {
- capDecl.addNewDescription(pnGen3_capab.getLiteral().toString(),
- pnGen5.getLiteral().toString());
- } else if (label.equals("capab_ident")) {
- capDecl.addNewMethod(pnGen3_capab.getLiteral().toString(),
- pnGen5.getLiteral().toString());
+ capDecl.addNewDescription(pnGen4_capab.getLiteral().toString(),
+ pnGen6.getLiteral().toString());
+ } else if (label.equals("capab_meth")) {
+ capDecl.addNewMethod(pnGen4_capab.getLiteral().toString(),
+ pnGen6.getLiteral().toString().replaceAll("\\s+",""));
} else
throw new Error("ParseTreeHandler: Unknown label '" + label + "' while operating on parse tree!");
public void processRequiresDecl() {
// Get the root - requires list (element 2)
- ParseNodeVector pnv = pn.getChildren();
- ParseNode pnRoot = pnv.elementAt(2);
- // Get the second child of root for "capab_list"
+ ParseNodeVector pnv = pnReq.getChildren();
+ ParseNode pnRoot = pnv.elementAt(0);
+ // Get the second child of root for "reqlist"
ParseNodeVector pnvGen2 = pnRoot.getChildren();
if (pnvGen2.size() == 0) {
throw new Error("ParseTreeHandler: 'Requires' declaration is missing! Please check your policy file...");
if (pnvGen2.size() == 0) {
throw new Error("ParseTreeHandler: Interface declaration is missing! Please check your policy file...");
}
+ // Get "intface_def"
ParseNode pnGen2 = pnvGen2.elementAt(0);
// Confirm that this is "intface_ident"
if (pnGen2.getLabel().equals("intface_ident")) {
} else
throw new Error("ParseTreeHandler: Label 'intface_ident' is not found! Instead, '" + pnGen2.getLabel() + "' was found...");
}
-
-
-/* public static void main(String[] args) throws Exception {
-
- // initialize the symbol factory
- ComplexSymbolFactory csf = new ComplexSymbolFactory();
- // create a buffering scanner wrapper
- ScannerBuffer lexer = new ScannerBuffer(new Lexer(new BufferedReader(new FileReader(args[0])),csf));
- // start parsing
- Parser p = new Parser(lexer,csf);
- ParseNode pn = (ParseNode) p.parse().value;
-
- String intFace = ParseTreeHandler.getOrigIntface(pn);
- System.out.println("Original interface name: " + intFace);
- ParseTreeHandler pth = new ParseTreeHandler(intFace, pn);
- pth.processInterfaceDecl();
- pth.processCapabilityDecl();
- pth.processRequiresDecl();
- }*/
}
projects / iot2.git / blobdiff