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()();
}
//Used in unit tests
public static LanguageCompiler CreateDummy()
{
GrammarData data = new GrammarData();
data.Grammar = new Grammar();
LanguageCompiler compiler = new LanguageCompiler(data);
return(compiler);
}
public SearchHelper(IClientDocumentRepository clientDocumentRepository)
{
this.clientDocumentRepository = clientDocumentRepository;
_grammar = new SearchGrammar();
_compiler = new LanguageCompiler(_grammar);
Irony.StringSet errors = _compiler.Parser.GetErrors();
if (errors.Count > 0)
{
throw new ApplicationException("SearchGrammar contains errors. Investigate using GrammarExplorer." + errors.ToString());
}
}
//Used in unit tests
public static CompilerContext CreateDummy()
{
CompilerContext ctx = new CompilerContext(LanguageCompiler.CreateDummy());
return(ctx);
}
public CompilerContext(LanguageCompiler compiler)
{
this.Compiler = compiler;
}
public CompilerContext(LanguageCompiler compiler)
{
this.Compiler = compiler;
}
//Used in unit tests
public static LanguageCompiler CreateDummy()
{
GrammarData data = new GrammarData();
data.Grammar = new Grammar();
LanguageCompiler compiler = new LanguageCompiler(data);
return compiler;
}
/// <summary>
/// Generates JavaScript based on BASIC source code, and returns a
/// CopmileResult object containing the compiled source code if
/// successful, or otherwise error messages.
/// </summary>
public static CompileResult Generate(string sourceCode)
{
// Create a BASIC compiler
BasicGrammar basicGrammer = new BasicGrammar();
LanguageCompiler compiler = new LanguageCompiler(basicGrammer);
// Compile the source code into an Abstract Syntax Tree.
ProgramNode rootNode;
try
{
rootNode = (ProgramNode)compiler.Parse(sourceCode + Environment.NewLine);
}
catch (BasicSyntaxErrorException bsee)
{
rootNode = null;
compiler.Context.Errors.Add(new SyntaxError(new SourceLocation(), bsee.Message, null));
}
if (rootNode == 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];
// Return failure.
return new CompileResult()
{
IsSuccessful = false,
ResultMessage = message
};
}
// Set up the types of lines (e.g. whether a given line is the first,
// last, or internal line of a function) and get the starting function
// to call.
string firstFunctionName = SetLineTypes(rootNode);
// Now generate JavaScript from an abstract syntax tree.
string code;
StringBuilder sb = new StringBuilder();
using (TextWriter tw = new StringWriter(sb, CultureInfo.InvariantCulture))
{
rootNode.GenerateJavaScript(new JSContext(), tw);
code = sb.ToString();
}
// Return the JavaScript code.
return new CompileResult()
{
IsSuccessful = true,
ResultMessage = "Successfully compiled in " + compiler.CompileTime + "ms",
JavaScript = code,
StartFunction = firstFunctionName
};
}
