// Compile this item.
internal override bool Compile()
{
if (parsed == null && sourceText != null)
{
Context context = new Context(sourceText);
context.codebase = new CodeBase(codebaseOption, this);
context.codebase.site = engine.Site;
JSParser parser = new JSParser(context);
parser.printSupported = engine.printSupported;
try
{
parsed = parser.ParseSource(false);
}
catch (JScriptException e)
{
#if !CONFIG_SMALL_CONSOLE
ScriptStream.Error.WriteLine(e.Message);
#else
ScriptStream.WriteLine(e.Message);
#endif
return(false);
}
if (parser.numErrors > 0)
{
// There were errors that were partially recovered.
parsed = null;
return(false);
}
}
return(true);
}
// Compile this item.
internal override bool Compile()
{
if(parsed == null && sourceText != null)
{
Context context = new Context(sourceText);
context.codebase = new CodeBase(codebaseOption, this);
context.codebase.site = engine.Site;
JSParser parser = new JSParser(context);
parser.printSupported = engine.printSupported;
try
{
parsed = parser.ParseSource(false);
}
catch(JScriptException e)
{
#if !CONFIG_SMALL_CONSOLE
ScriptStream.Error.WriteLine(e.Message);
#else
ScriptStream.WriteLine(e.Message);
#endif
return false;
}
if(parser.numErrors > 0)
{
// There were errors that were partially recovered.
parsed = null;
return false;
}
}
return true;
}
// Evaluate a JScript expression in the context of a specific engine.
public static Object JScriptEvaluate(Object source, VsaEngine engine)
{
Object value = null;
// Bail out if we weren't supplied a string.
if (!(source is String))
{
return(source);
}
// Parse the "eval" statement.
Context context = new Context((String)source);
context.codebase = new CodeBase("eval code", null);
JSParser parser = new JSParser(context);
JNode node = parser.ParseSource(true);
// Push a scope for use during evaluation.
engine.PushScriptObject
(new BlockScope(engine.ScriptObjectStackTop(),
new JSObject(null, engine)));
// Evaluate the statement.
try
{
value = node.Eval(engine);
if (value == Empty.Value)
{
value = null;
}
}
catch (JScriptException e)
{
// Attach the context information to low-level exceptions.
if (e.context == null)
{
e.context = context;
}
throw;
}
catch (BreakJumpOut brk)
{
// "break" used incorrectly.
throw new JScriptException(JSError.BadBreak, brk.context);
}
catch (ContinueJumpOut cont)
{
// "continue" used incorrectly.
throw new JScriptException(JSError.BadContinue,
cont.context);
}
catch (ReturnJumpOut ret)
{
// "return" used incorrectly.
throw new JScriptException(JSError.BadReturn, ret.context);
}
finally
{
// Pop the script scope.
engine.PopScriptObject();
}
// Return the result of the evaluation to the caller.
return(value);
}
// Evaluate a JScript expression in the context of a specific engine.
public static Object JScriptEvaluate(Object source, VsaEngine engine)
{
Object value = null;
// Bail out if we weren't supplied a string.
if(!(source is String))
{
return source;
}
// Parse the "eval" statement.
Context context = new Context((String)source);
context.codebase = new CodeBase("eval code", null);
JSParser parser = new JSParser(context);
JNode node = parser.ParseSource(true);
// Push a scope for use during evaluation.
engine.PushScriptObject
(new BlockScope(engine.ScriptObjectStackTop(),
new JSObject (null, engine)));
// Evaluate the statement.
try
{
value = node.Eval(engine);
if(value == Empty.Value)
{
value = null;
}
}
catch(JScriptException e)
{
// Attach the context information to low-level exceptions.
if(e.context == null)
{
e.context = context;
}
throw;
}
catch(BreakJumpOut brk)
{
// "break" used incorrectly.
throw new JScriptException(JSError.BadBreak, brk.context);
}
catch(ContinueJumpOut cont)
{
// "continue" used incorrectly.
throw new JScriptException(JSError.BadContinue,
cont.context);
}
catch(ReturnJumpOut ret)
{
// "return" used incorrectly.
throw new JScriptException(JSError.BadReturn, ret.context);
}
finally
{
// Pop the script scope.
engine.PopScriptObject();
}
// Return the result of the evaluation to the caller.
return value;
}
