public static decimal?Compile(string sourceCode)
{
// create a compiler from the grammar
FlGrammar grammar = new FlGrammar();
LanguageCompiler compiler = new LanguageCompiler(grammar);
// Attempt to compile into an Abstract Syntax Tree. Because FLGrammar
// defines the root node as ProgramNode, that is what will be returned.
// This happens to implement IJavaScriptGenerator, which is what we need.
IExpressionGenerator program = (IExpressionGenerator)compiler.Parse(sourceCode);
if (program == null || compiler.Context.Errors.Count > 0)
{
// Didn't compile. Generate an error message.
SyntaxError error = compiler.Context.Errors[0];
string location = string.Empty;
if (error.Location.Line > 0 && error.Location.Column > 0)
{
location = "Line " + (error.Location.Line + 1) + ", column " + (error.Location.Column + 1);
}
string message = location + ": " + error.Message + ":" + Environment.NewLine;
message += sourceCode.Split('\n')[error.Location.Line];
throw new CompilationException(message);
}
// now just instruct the compilation of to javascript
//StringBuilder js = new StringBuilder();
var expression = program.GenerateExpression(null);
return(((Expression <Func <decimal?> >)expression).Compile()());
}
public static decimal? Compile(string sourceCode)
{
// create a compiler from the grammar
FlGrammar grammar = new FlGrammar();
LanguageCompiler compiler = new LanguageCompiler(grammar);
// Attempt to compile into an Abstract Syntax Tree. Because FLGrammar
// defines the root node as ProgramNode, that is what will be returned.
// This happens to implement IJavaScriptGenerator, which is what we need.
IExpressionGenerator program = (IExpressionGenerator)compiler.Parse(sourceCode);
if (program == null || compiler.Context.Errors.Count > 0)
{
// Didn't compile. Generate an error message.
SyntaxError error = compiler.Context.Errors[0];
string location = string.Empty;
if (error.Location.Line > 0 && error.Location.Column > 0)
{
location = "Line " + (error.Location.Line + 1) + ", column " + (error.Location.Column + 1);
}
string message = location + ": " + error.Message + ":" + Environment.NewLine;
message += sourceCode.Split('\n')[error.Location.Line];
throw new CompilationException(message);
}
// now just instruct the compilation of to javascript
//StringBuilder js = new StringBuilder();
var expression = program.GenerateExpression(null);
return ((Expression<Func<decimal?>>)expression).Compile()();
}
