servo: make it possible for content to (successfully) invoke JS

Source-Repo: https://github.com/servo/servo
Source-Revision: b7315ad9d010257d19995f00a9457f3d0e8d9e75

servo/src/servo/content.rs

@@ -63,7 +63,10 @@ fn content(to_layout: chan<layout::msg>) -> chan<msg> {
                   }
                   result::ok(bytes) {
                     let cx = rt.cx();
+                    cx.set_default_options_and_version();
+                    cx.set_logging_error_reporter();
                     cx.new_compartment(jsglobal::global_class).chain { |comp|
+                        comp.define_functions(jsglobal::global_fns);
                         cx.evaluate_script(comp.global_obj, bytes, filename, 1u)
                     };
                   }

servo/src/servo/content/js.rs

@@ -74,6 +74,10 @@ impl methods for cx {
         JS_SetVersion(self.ptr, v);
     }
 
+    fn set_logging_error_reporter() {
+        JS_SetErrorReporter(self.ptr, reportError);
+    }
+
     fn set_error_reporter(reportfn: *u8) {
         JS_SetErrorReporter(self.ptr, reportfn);
     }
@@ -119,6 +123,18 @@ impl methods for cx {
     }
 }
 
+crust fn reportError(_cx: *JSContext,
+                     msg: *c_char,
+                     report: *JSErrorReport) {
+    unsafe {
+        let fnptr = (*report).filename;
+        let fname = if fnptr.is_not_null() {from_c_str(fnptr)} else {"none"};
+        let lineno = (*report).lineno;
+        let msg = from_c_str(msg);
+        #error["Error at %s:%?: %s\n", fname, lineno, msg];
+    }
+}
+
 // ___________________________________________________________________________
 // compartment
 
@@ -152,24 +168,12 @@ resource jsobj_rsrc(self: {cx: cx, cxptr: *JSContext, ptr: *JSObject}) {
 #[cfg(test)]
 mod test {
 
-    crust fn reportError(_cx: *JSContext,
-                         msg: *c_char,
-                         report: *JSErrorReport) {
-        unsafe {
-            let fnptr = (*report).filename;
-            let fname = if fnptr.is_not_null() {from_c_str(fnptr)} else {"none"};
-            let lineno = (*report).lineno;
-            let msg = from_c_str(msg);
-            #error["Error at %s:%?: %s\n", fname, lineno, msg];
-        }
-    }
-
     #[test]
     fn dummy() {
         let rt = rt();
         let cx = rt.cx();
         cx.set_default_options_and_version();
-        cx.set_error_reporter(reportError);
+        cx.set_logging_error_reporter();
         cx.new_compartment(jsglobal::global_class).chain { |comp|
             comp.define_functions(jsglobal::global_fns);
 

servo/src/servo/content/jsglobal.rs

@@ -63,7 +63,7 @@ fn global_class(np: name_pool) -> JSClass {
                 null(), null(), null(), null(), null())} // 40
 }
 
-crust fn debug(cx: *JSContext, argc: uintN, vp: *jsval) {
+crust fn debug(cx: *JSContext, argc: uintN, vp: *jsval) -> JSBool {
     import io::writer_util;
 
     #debug["debug() called with %? arguments", argc];
@@ -78,6 +78,7 @@ crust fn debug(cx: *JSContext, argc: uintN, vp: *jsval) {
             #debug["%s", str];
         }
         JS_SET_RVAL(cx, vp, JSVAL_NULL);
+        ret 1_i32;
     }
 }
 

servo/src/test/test.js

@@ -1 +1 @@
-print("Hello, world!");
+debug("Hello, world!");