private void ParseAst(JS.AST ast, string sp)
{
if (ast == null)
{
return;
}
if (CheckWorker())
{
return;
}
//_logView.LogStr("JSM->" + sp + ast.ToString() + "\t\t" + ast.GetType().Name);
if (ast is JS.FunctionDeclaration)
{
JS.Function func = ast as JS.Function;
ParseAstList(func.func_obj.body.elems, sp + " ");
}
else if (ast is JS.Assign)
{
JS.Assign ass = ast as JS.Assign;
ParseAst(ass.left, sp + "l ");
ParseAst(ass.right, sp + "r ");
}
else if (ast is JS.Binary)
{
JS.Binary bin = ast as JS.Binary;
string[] parts = bin.ToString().Split('.');
if (parts.Length > 1)
{
if (parts[parts.Length - 2] == "This")
{
string calledId = parts[parts.Length - 1] + "()";
//dup
// If we have a method of this name in this file/class
if (_addedNodes.ContainsKey(calledId))
{
// Create an edge.
// A definite functional assignment link.
AddEdge(_methodNodeId, calledId, EdgeStyle.NormalArrow, Color.Aqua);
}
else
{
// It's a call to a method outside this class/file.
//
//_logView.LogStr("skipped assign ref -->" + _methodNodeId + " --------> " + calledId);
//
}
}
else if (parts[parts.Length - 2] == "self")
{
string calledId = parts[parts.Length - 1] + "()";
//dup
// If we have a method of this name in this file/class
if (_addedNodes.ContainsKey(calledId))
{
// Get the graph node that we're linking to.
//Node calledNode = _addedNodes[calledId];
// Create an edge.
// A definite functional assignment link.
AddEdge(_methodNodeId, calledId, EdgeStyle.NormalArrow, Color.Aqua);
}
else
{
// It's a call to a method outside this class/file.
_logView.LogStr("skipped assign ref -->" + _methodNodeId + " --------> " + calledId);
}
}
}
}
else if (ast is JS.Expression)
{
JS.Expression expr = ast as JS.Expression;
ParseAstList(expr.exprs, sp + " ");
}
else if (ast is JS.FunctionExpression)
{
JS.FunctionExpression expr = ast as JS.FunctionExpression;
ParseAstList(expr.func_obj.body.elems, sp + " ");
}
else if (ast is JS.For)
{
JS.For fr = ast as JS.For;
ParseAst(fr.stms, sp + " ");
}
else if (ast is JS.If)
{
JS.If iff = ast as JS.If;
ParseAst(iff.false_stm, sp + "f ");
ParseAst(iff.true_stm, sp + "t ");
}
else if (ast is JS.Block)
{
JS.Block block = ast as JS.Block;
ParseAstList(block.elems, sp + " ");
}
else if (ast is JS.VariableStatement)
{
JS.VariableStatement var = ast as JS.VariableStatement;
//var.
ParseAstList(var.var_decls, sp + " ");
}
else if (ast is JS.Return)
{
JS.Return ret = ast as JS.Return;
ParseAst(ret.expression, sp + " ");
}
else if (ast is JS.VariableDeclaration)
{
JS.VariableDeclaration var = ast as JS.VariableDeclaration;
Microsoft.JScript.New newval = var.val as Microsoft.JScript.New;
if (newval != null && newval.exp != null)
{
//_logView.LogStr("new:" + newval.exp.ToString());
string[] parts = newval.exp.ToString().Split('.');
if (parts.Length > 0)
{
string calledId = parts[parts.Length - 1] + "()";
// If we have a method of this name in this file/class, then
// we have a possible constructor link.
if (_addedNodes.ContainsKey(calledId))
{
// Create an edge.
AddEdge(_methodNodeId, calledId, EdgeStyle.NormalArrow, Color.Green);
}
}
}
else
{
if (var.val != null)
{
string valStr = var.val.ToString();
string[] parts = valStr.Split('.');
if (parts.Length > 1 && parts[0] == "self")
{
// dup..
string calledId = parts[parts.Length - 1] + "()";
// If we have a method of this name in this file/class, then
// we have a possible constructor link.
if (_addedNodes.ContainsKey(calledId))
{
// Create an edge.
AddEdge(_methodNodeId, calledId, EdgeStyle.NormalArrow, Color.Green);
}
}
}
}
//ParseAstList(var.var_decls, sp + " ");
}
else if (ast is JS.Call)
{
JS.Call call = ast as JS.Call;
string[] parts = call.ToString().Split(' ');
string[] bits = parts[0].Split('.');
string calledId = bits[bits.Length - 1] + "()";
bool methodInThisClass = true;
if (bits.Length > 1)
{
if ((bits[bits.Length - 2] != "This") &&
(bits[bits.Length - 2] != "self"))
{
methodInThisClass = false;
}
}
// If we have a method of this name in this file/class
if (_addedNodes.ContainsKey(calledId))
{
// Create an edge.
if (methodInThisClass)
{
// A definite link.
AddEdge(_methodNodeId, calledId, EdgeStyle.NormalArrow, Color.Black);
}
else
{
// A tentative link.
AddEdge(_methodNodeId, calledId, EdgeStyle.NormalArrow, Color.Gray);
}
}
else
{
// It's a call to a method outside this class/file.
//
//_logView.LogStr("skipped -------->" + _methodNodeId + " --------> " + parts[0]);
//
}
}
}
/**
* Whether the "catch (e: e instanceof Exception) { ... }" syntax
* is implemented.
*/
AST StatementHelper(AST parent)
{
AST pn = null;
// If skipsemi == true, don't add SEMI + EOL to source at the
// end of this statment. For compound statements, IF/FOR etc.
bool skip_semi = false;
int tt;
tt = ts.GetToken ();
if (tt == Token.IF) {
skip_semi = true;
decompiler.AddToken (Token.IF);
AST cond = Condition (parent);
decompiler.AddEOL (Token.LC);
AST if_true = Statement (parent);
AST if_false = null;
if (ts.MatchToken (Token.ELSE)) {
decompiler.AddToken (Token.RC);
decompiler.AddToken (Token.ELSE);
decompiler.AddEOL (Token.LC);
if_false = Statement (parent);
}
decompiler.AddEOL (Token.RC);
pn = new If (parent, cond, if_true, if_false, new Location (ts.SourceName, ts.LineNumber));
} else if (tt == Token.SWITCH) {
skip_semi = true;
decompiler.AddToken (Token.SWITCH);
pn = new Switch (parent, new Location (ts.SourceName, ts.LineNumber));
Clause cur_case;
MustMatchToken (Token.LP, "msg.no.paren.switch");
decompiler.AddToken (Token.LP);
((Switch) pn).exp = Expr (parent, false);
MustMatchToken (Token.RP, "msg.no.paren.after.switch");
decompiler.AddToken (Token.RP);
MustMatchToken (Token.LC, "msg.no.brace.switch");
decompiler.AddEOL (Token.LC);
ClauseType clause_type = ClauseType.Case;
while ((tt = ts.GetToken ()) != Token.RC && tt != Token.EOF) {
if (tt == Token.CASE) {
decompiler.AddToken (Token.CASE);
cur_case = new Clause (pn, new Location (ts.SourceName, ts.LineNumber));
cur_case.exp = Expr (pn, false);
decompiler.AddEOL (Token.COLON);
if (clause_type == ClauseType.Default)
clause_type = ClauseType.CaseAfterDefault;
} else if (tt == Token.DEFAULT) {
cur_case = null;
clause_type = ClauseType.Default;
decompiler.AddToken (Token.DEFAULT);
decompiler.AddEOL (Token.COLON);
} else {
cur_case = null;
ReportError ("msg.bad.switch");
}
MustMatchToken (Token.COLON, "msg.no.colon.case");
while ((tt = ts.PeekToken ()) != Token.RC && tt != Token.CASE && tt != Token.DEFAULT && tt != Token.EOF) {
if (clause_type == ClauseType.Case || clause_type == ClauseType.CaseAfterDefault)
cur_case.AddStm (Statement (pn));
else if (clause_type == ClauseType.Default)
((Switch) pn).default_clauses.Add (Statement (pn));
}
((Switch) pn).AddClause (cur_case, clause_type);
}
decompiler.AddEOL (Token.RC);
} else if (tt == Token.WHILE) {
skip_semi = true;
decompiler.AddToken (Token.WHILE);
While w = new While (new Location (ts.SourceName, ts.LineNumber));
AST cond = Condition (w);
decompiler.AddEOL (Token.LC);
AST body = Statement (w);
decompiler.AddEOL (Token.RC);
w.Init (parent, cond, body);
pn = w;
} else if (tt == Token.DO) {
decompiler.AddToken (Token.DO);
decompiler.AddEOL (Token.LC);
int line_number = ts.LineNumber;
DoWhile do_while = new DoWhile (new Location (ts.SourceName, line_number));
AST body = Statement (do_while);
decompiler.AddToken (Token.RC);
MustMatchToken (Token.WHILE, "msg.no.while.do");
decompiler.AddToken (Token.WHILE);
AST cond = Condition (do_while);
do_while.Init (parent, body, cond);
pn = do_while;
} else if (tt == Token.FOR) {
skip_semi = true;
decompiler.AddToken (Token.FOR);
AST init, cond, incr = null, body;
MustMatchToken (Token.LP, "msg.no.paren.for");
decompiler.AddToken (Token.LP);
tt = ts.PeekToken ();
if (tt == Token.SEMI)
init = new EmptyAST ();
else {
if (tt == Token.VAR) {
// set init to a var list or initial
ts.GetToken (); // throw away the 'var' token
init = Variables (parent, true);
} else
init = Expr (parent, true);
}
if (ts.MatchToken (Token.IN)) {
decompiler.AddToken (Token.IN);
cond = Expr (parent, false); // 'cond' is the object over which we're iterating
} else {
// ordinary for loop
MustMatchToken (Token.SEMI, "msg.no.semi.for");
decompiler.AddToken (Token.SEMI);
if (ts.PeekToken () == Token.SEMI)
cond = new EmptyAST (); // no loop condition
else
cond = Expr (parent, false);
MustMatchToken (Token.SEMI, "msg.no.semi.for.cond");
decompiler.AddToken (Token.SEMI);
if (ts.PeekToken () == Token.RP)
incr = new EmptyAST ();
else
incr = Expr (parent, false);
}
MustMatchToken (Token.RP, "msg.no.paren.for.ctrl");
decompiler.AddToken (Token.RP);
decompiler.AddEOL (Token.LC);
body = Statement (pn);
decompiler.AddEOL (Token.RC);
if (incr == null) // cond could be null if 'in obj' got eaten by the init node.
pn = new ForIn (parent, init, cond, body, new Location (ts.SourceName, ts.LineNumber));
else
pn = new For (parent, init, cond, incr, body, new Location (ts.SourceName, ts.LineNumber));
body.PropagateParent (pn);
} else if (tt == Token.TRY) {
int line_number = ts.LineNumber;
AST try_block;
ArrayList catch_blocks = null;
AST finally_block = null;
skip_semi = true;
decompiler.AddToken (Token.TRY);
decompiler.AddEOL (Token.LC);
try_block = Statement (parent);
decompiler.AddEOL (Token.RC);
catch_blocks = new ArrayList ();
bool saw_default_catch = false;
int peek = ts.PeekToken ();
if (peek == Token.CATCH) {
while (ts.MatchToken (Token.CATCH)) {
if (saw_default_catch)
ReportError ("msg.catch.unreachable");
decompiler.AddToken (Token.CATCH);
MustMatchToken (Token.LP, "msg.no.paren.catch");
decompiler.AddToken (Token.LP);
MustMatchToken (Token.NAME, "msg.bad.catchcond");
string var_name = ts.GetString;
decompiler.AddName (var_name);
AST catch_cond = null;
if (ts.MatchToken (Token.IF)) {
decompiler.AddToken (Token.IF);
catch_cond = Expr (parent, false);
} else
saw_default_catch = true;
MustMatchToken (Token.RP, "msg.bad.catchcond");
decompiler.AddToken (Token.RP);
MustMatchToken (Token.LC, "msg.no.brace.catchblock");
decompiler.AddEOL (Token.LC);
catch_blocks.Add (new Catch (var_name, catch_cond,
Statements (null), parent, new Location (ts.SourceName, line_number)));
MustMatchToken (Token.RC, "msg.no.brace.after.body");
decompiler.AddEOL (Token.RC);
}
} else if (peek != Token.FINALLY)
MustMatchToken (Token.FINALLY, "msg.try.no.catchfinally");
if (ts.MatchToken (Token.FINALLY)) {
decompiler.AddToken (Token.FINALLY);
decompiler.AddEOL (Token.LC);
finally_block = Statement (parent);
decompiler.AddEOL (Token.RC);
}
pn = new Try (try_block, catch_blocks, finally_block, parent, new Location (ts.SourceName, ts.LineNumber));
} else if (tt == Token.THROW) {
int line_number = ts.LineNumber;
decompiler.AddToken (Token.THROW);
pn = new Throw (Expr (parent, false), new Location (ts.SourceName, ts.LineNumber));
if (line_number == ts.LineNumber)
CheckWellTerminated ();
} else if (tt == Token.BREAK) {
decompiler.AddToken (Token.BREAK);
// MatchLabel only matches if there is one
string label = MatchLabel ();
if (label != null)
decompiler.AddName (label);
pn = new Break (parent, label, new Location (ts.SourceName, ts.LineNumber));
} else if (tt == Token.CONTINUE) {
decompiler.AddToken (Token.CONTINUE);
// MatchLabel only matches if there is one
string label = MatchLabel ();
if (label != null)
decompiler.AddName (label);
pn = new Continue (parent, label, new Location (ts.SourceName, ts.LineNumber));
} else if (tt == Token.WITH) {
skip_semi = true;
decompiler.AddToken (Token.WITH);
MustMatchToken (Token.LP, "msg.no.paren.with");
decompiler.AddToken (Token.LP);
AST obj = Expr (parent, false);
MustMatchToken (Token.RP, "msg.no.paren.after.with");
decompiler.AddToken (Token.RP);
decompiler.AddToken (Token.LC);
++nesting_of_with;
AST body;
try {
body = Statement (parent);
} finally {
--nesting_of_with;
}
decompiler.AddEOL (Token.RC);
pn = new With (parent, obj, body, new Location (ts.SourceName, ts.LineNumber));
} else if (tt == Token.VAR) {
int line_number = ts.LineNumber;
pn = Variables (parent, false);
if (ts.LineNumber == line_number)
CheckWellTerminated ();
} else if (tt == Token.RETURN) {
AST ret_expr = null;
decompiler.AddToken (Token.RETURN);
pn = new Return (new Location (ts.SourceName, ts.LineNumber));
if (!InsideFunction)
ReportError ("msg.bad.return");
/* This is ugly, but we don't want to require a semicolon. */
ts.allow_reg_exp = true;
tt = ts.PeekTokenSameLine ();
ts.allow_reg_exp = false;
int line_number = ts.LineNumber;
if (tt != Token.EOF && tt != Token.EOL && tt != Token.SEMI && tt != Token.RC) {
ret_expr = Expr (pn, false);
if (ts.LineNumber == line_number)
CheckWellTerminated ();
}
((Return) pn).Init (parent, ret_expr);
} else if (tt == Token.LC) {
skip_semi = true;
pn = Statements (parent);
MustMatchToken (Token.RC, "msg.no.brace.block");
} else if (tt == Token.ERROR || tt == Token.EOL || tt == Token.SEMI) {
pn = new EmptyAST ();
skip_semi = true;
} else if (tt == Token.FUNCTION) {
pn = Function (parent, FunctionType.ExpressionStatement);
} else if (tt == Token.IMPORT) {
decompiler.AddToken (Token.IMPORT);
pn = Import (parent);
} else {
int last_expr_type = tt;
int token_number = ts.TokenNumber;
ts.UnGetToken (tt);
int line_number = ts.LineNumber;
pn = Expr (parent, false);
if (ts.PeekToken () == Token.COLON) {
/* check that the last thing the tokenizer returned was a
* NAME and that only one token was consumed.
*/
if (last_expr_type != Token.NAME || (ts.TokenNumber != token_number))
ReportError ("msg.bad.label");
ts.GetToken (); // eat the colon
string name = ts.GetString;
// bind 'Statement (pn)' to the label
Labelled labelled = new Labelled (parent, new Location (ts.SourceName, ts.LineNumber));
labelled.Init (parent, name, Statement (labelled), new Location (ts.SourceName, ts.LineNumber));
pn = labelled;
// depend on decompiling lookahead to guess that that
// last name was a label.
decompiler.AddEOL (Token.COLON);
return pn;
}
// FIXME:
// pn = nf.createExprStatement(pn, lineno);
if (ts.LineNumber == line_number)
CheckWellTerminated ();
}
ts.MatchToken (Token.SEMI);
if (!skip_semi)
decompiler.AddEOL (Token.SEMI);
return pn;
}
