private Node transform(JsExpression x) {
assert x != null;
switch (x.getKind()) {
case ARRAY:
return transform((JsArrayLiteral) x);
case ARRAY_ACCESS:
return transform((JsArrayAccess) x);
case BINARY_OP:
return transform((JsBinaryOperation) x);
case CONDITIONAL:
return transform((JsConditional) x);
case INVOKE:
return transform((JsInvocation) x);
case FUNCTION:
return transform((JsFunction) x);
case OBJECT:
return transform((JsObjectLiteral) x);
case BOOLEAN:
return transform((JsBooleanLiteral) x);
case NULL:
return transform((JsNullLiteral) x);
case NUMBER:
if (x instanceof JsNumericEntry) {
return transform((JsNumericEntry) x);
}
return transform((JsNumberLiteral) x);
case REGEXP:
return transform((JsRegExp) x);
case STRING:
return transform((JsStringLiteral) x);
case THIS:
return transform((JsThisRef) x);
case NAME_OF:
return transform((JsNameOf) x);
case NAME_REF:
return transform((JsNameRef) x);
case NEW:
return transform((JsNew) x);
case POSTFIX_OP:
return transform((JsPostfixOperation) x);
case PREFIX_OP:
return transform((JsPrefixOperation) x);
default:
throw new IllegalStateException(
"Unexpected expression type: " + x.getClass().getSimpleName());
}
}
private void visitExpression(JsExpression x, JsContext ctx) {
if (ctx.isLvalue()) {
// Assignments to comma expressions aren't legal
return;
} else if (nodesInRefContext.contains(x)) {
// Don't modify references into non-references
return;
} else if (!instrumentedFiles.contains(x.getSourceInfo().getFileName())) {
return;
} else if (x.getSourceInfo().getStartLine() == lastLine
&& (x.getSourceInfo().getFileName().equals(lastFile))) {
return;
}
lastLine = x.getSourceInfo().getStartLine();
lastFile = x.getSourceInfo().getFileName();
endVisit(x, ctx);
}