public void Run()
{
ASTVisualizer visualizer = SheInfo.Visualize ? new ASTVisualizer() : null;
using (var reader = new StreamReader(filePath))
{
Lexer l = new Lexer(reader);
SheParser sp = new SheParser();
NestedEnvironment env = new NestedEnvironment();
Natives.AppendNatives(env);
while (l.Peek(0) != Token.EOF)
{
ASTree ast = sp.Parse(l);
// Console.WriteLine(ast);
Console.WriteLine(ast.Eval(env));
if (SheInfo.Visualize)
{
visualizer.Push(ast);
}
}
}
if (SheInfo.Visualize)
{
visualizer.Visualize($"INTPRT_{SheInfo.StartTime:yyyy-MM-dd-HH-mm-ss}");
}
}
public void Start()
{
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine(startMessage);
ASTVisualizer visualizer = SheInfo.Visualize ? new ASTVisualizer() : null;
while (true)
{
WriteSystemMessage(prompt);
string input = ReadSource();
if (input == null)
{
break;
}
Lexer lexer = new Lexer(new StringReader(input));
/*while (lexer.Peek(0) != Token.EOF)
* {
* Console.WriteLine($"{lexer.Peek(0).GetType()}:{lexer.Read()}");
* }*/
SheParser parser = new SheParser();
ASTree ast = parser.Parse(lexer);
if (SheInfo.Visualize)
{
visualizer.Push(ast);
}
//Console.WriteLine(ast);
Console.WriteLine(ast.Eval(replEnvironment));
Console.WriteLine();
}
if (SheInfo.Visualize)
{
visualizer.Visualize($"REPL_{SheInfo.StartTime:yyyy-MM-dd-HH-mm-ss}");
}
}
public static void AssertTemplate(string expected, string input, ScriptLang lang = ScriptLang.Default, bool isRoundtripTest = false, bool supportExactRoundtrip = true, object model = null, bool specialLiquid = false, bool expectParsingErrorForRountrip = false, bool supportRoundTrip = true, bool testASTInstead = false)
{
bool isLiquid = lang == ScriptLang.Liquid;
var parserOptions = new ParserOptions()
{
LiquidFunctionsToScriban = isLiquid,
};
var lexerOptions = new LexerOptions()
{
Lang = lang
};
if (isRoundtripTest)
{
lexerOptions.KeepTrivia = true;
}
if (specialLiquid)
{
parserOptions.ExpressionDepthLimit = 500;
}
#if EnableTokensOutput
{
Console.WriteLine("Tokens");
Console.WriteLine("======================================");
var lexer = new Lexer(input, options: lexerOptions);
foreach (var token in lexer)
{
Console.WriteLine($"{token.Type}: {token.GetText(input)}");
}
Console.WriteLine();
}
#endif
string roundtripText = null;
// We loop first on input text, then on roundtrip
while (true)
{
bool isRoundtrip = roundtripText != null;
bool hasErrors = false;
bool hasException = false;
if (isRoundtrip)
{
Console.WriteLine("Roundtrip");
Console.WriteLine("======================================");
Console.WriteLine(roundtripText);
lexerOptions.Lang = lang == ScriptLang.Scientific ? lang : ScriptLang.Default;
if (!isLiquid && supportExactRoundtrip)
{
Console.WriteLine("Checking Exact Roundtrip - Input");
Console.WriteLine("======================================");
TextAssert.AreEqual(input, roundtripText);
}
input = roundtripText;
}
else
{
Console.WriteLine("Input");
Console.WriteLine("======================================");
Console.WriteLine(input);
}
var template = Template.Parse(input, "text", parserOptions, lexerOptions);
var result = string.Empty;
var resultAsync = string.Empty;
if (template.HasErrors)
{
hasErrors = true;
for (int i = 0; i < template.Messages.Count; i++)
{
var message = template.Messages[i];
if (i > 0)
{
result += "\n";
}
result += message;
}
if (specialLiquid && !isRoundtrip)
{
throw new InvalidOperationException("Parser errors: " + result);
}
}
else
{
if (isRoundtripTest)
{
result = template.ToText();
}
else
{
Assert.NotNull(template.Page);
if (!isRoundtrip)
{
// Dumps the roundtrip version
var lexerOptionsForTrivia = lexerOptions;
lexerOptionsForTrivia.KeepTrivia = true;
var templateWithTrivia = Template.Parse(input, "input", parserOptions, lexerOptionsForTrivia);
roundtripText = templateWithTrivia.ToText();
}
try
{
// Setup a default model context for the tests
if (model == null)
{
var scriptObj = new ScriptObject
{
["page"] = new ScriptObject {
["title"] = "This is a title"
},
["user"] = new ScriptObject {
["name"] = "John"
},
["product"] = new ScriptObject {
["title"] = "Orange", ["type"] = "fruit"
},
["products"] = new ScriptArray()
{
new ScriptObject {
["title"] = "Orange", ["type"] = "fruit"
},
new ScriptObject {
["title"] = "Banana", ["type"] = "fruit"
},
new ScriptObject {
["title"] = "Apple", ["type"] = "fruit"
},
new ScriptObject {
["title"] = "Computer", ["type"] = "electronics"
},
new ScriptObject {
["title"] = "Mobile Phone", ["type"] = "electronics"
},
new ScriptObject {
["title"] = "Table", ["type"] = "furniture"
},
new ScriptObject {
["title"] = "Sofa", ["type"] = "furniture"
},
}
};
scriptObj.Import(typeof(SpecialFunctionProvider));
model = scriptObj;
}
// Render sync
{
var context = NewTemplateContext(lang);
context.PushOutput(new TextWriterOutput(new StringWriter()
{
NewLine = "\n"
}));
var contextObj = new ScriptObject();
contextObj.Import(model);
context.PushGlobal(contextObj);
result = template.Render(context);
}
// Render async
{
var asyncContext = NewTemplateContext(lang);
asyncContext.PushOutput(new TextWriterOutput(new StringWriter()
{
NewLine = "\n"
}));
var contextObj = new ScriptObject();
contextObj.Import(model);
asyncContext.PushGlobal(contextObj);
resultAsync = template.RenderAsync(asyncContext).Result;
}
}
catch (Exception exception)
{
hasException = true;
if (specialLiquid)
{
throw;
}
else
{
result = GetReason(exception);
}
}
}
if (testASTInstead)
{
var astVisualizer = new ASTVisualizer();
template.Page.Accept(astVisualizer);
result = astVisualizer.output.ToString();
resultAsync = result;
}
}
var testContext = isRoundtrip ? "Roundtrip - " : String.Empty;
Console.WriteLine($"{testContext}Result");
Console.WriteLine("======================================");
Console.WriteLine(result);
Console.WriteLine($"{testContext}Expected");
Console.WriteLine("======================================");
Console.WriteLine(expected);
if (isRoundtrip && expectParsingErrorForRountrip)
{
Assert.True(hasErrors, "The roundtrip test is expecting an error");
Assert.AreNotEqual(expected, result);
}
else
{
TextAssert.AreEqual(expected, result);
}
if (!isRoundtrip && !isRoundtripTest && !hasErrors && !hasException)
{
Console.WriteLine("Checking async");
Console.WriteLine("======================================");
TextAssert.AreEqual(expected, resultAsync);
}
if (!supportRoundTrip || isRoundtripTest || isRoundtrip || hasErrors)
{
break;
}
}
}