Exemplo n.º 1
0
        public override Token Build(Token lastToken, ScriptEngine engine, Script script, ref SourceCode sourceCode)
        {
            // while (condition) { /* Code */ }
            sourceCode += 4; // The +1 comes from below.

            while ((++sourceCode).SpecialChar)
            {
            }

            if (sourceCode.CurrentCode != '(')
            {
                sourceCode.Throw("Error parsing a 'while' statement, was epexting a '(' after 'while'.");
            }

            List<List<Token>> exitCondition = engine.BuildTokensAdvanced(ref sourceCode, ref script, new[] {')'});

            if (!sourceCode.SeekToNext('{'))
            {
                sourceCode.Throw(String.Format("Unexpected char: '{0}'", sourceCode.CurrentCode));
            }

            List<List<List<Token>>> code = engine.BuildLongTokens(ref sourceCode, ref script, new[] {'}'});

            return new WhileLoopToken(exitCondition, code);
        }
Exemplo n.º 2
0
        public override Token Build(Token lastToken, ScriptEngine engine, Script script, ref SourceCode sourceCode)
        {
            while ((++sourceCode).SpecialChar)
            {
            }
            if (sourceCode.Peek() != '{')
            {
                sourceCode.Throw(String.Format("Error parsing a 'do' statement, expected a '{' but got '{0}' instead.",
                                               sourceCode.Peek()));
            }
            List<List<List<Token>>> code = engine.BuildLongTokens(ref sourceCode, ref script, new[] {'}'});

            if (!sourceCode.SeekToNext("while"))
            {
                sourceCode.Throw("Error parsing a 'do' statement, was expecting a 'while' after the { } block.");
            }

            if (!sourceCode.SeekToNext('('))
            {
                sourceCode.Throw("Error parsing a 'do' statement, was expecting a '(' after 'while'.");
            }

            List<List<Token>> exitCondition = engine.BuildTokensAdvanced(ref sourceCode, ref script, new[] {')'});

            return new DoWhileToken(code, exitCondition);
        }
Exemplo n.º 3
0
        public override Token Build(Token lastToken, ScriptEngine engine, Script script, ref SourceCode sourceCode)
        {
            // using (arg1, arg2, arg3) { }

            sourceCode += 5;

            if (!sourceCode.SeekToNext('('))
            {
                sourceCode.Throw("Expected (");
            }

            // Build up the arguments.
            Dictionary<string, List<Token>> items = new Dictionary<string, List<Token>>();

            while (sourceCode.CurrentCode != ')')
            {

                string name = sourceCode.NextWord();

                if (sourceCode.CurrentCode != '=')
                {
                    sourceCode.Throw(String.Format("Unexpected character, {0}.", sourceCode.CurrentCode));
                }

                // Otherwise...
                List<Token> code = engine.BuildTokens(ref sourceCode, ref script, new char[] {',', ')'});

                items.Add(name, code);

            }

            if (!sourceCode.SeekToNext('{'))
            {
                sourceCode.Throw(String.Format("Unexpected character, {0}", sourceCode.NextCode));
            }

            List<List<List<Token>>> codeBlock = engine.BuildLongTokens(ref sourceCode, ref script, new char[] {'}'});

            return new UsingToken(items, codeBlock);
        }
Exemplo n.º 4
0
        public override Token Build(Token lastToken, ScriptEngine engine, Script script, ref SourceCode sourceCode)
        {
            sourceCode += 5;

            if (!sourceCode.SeekToNext('('))
            {
                sourceCode.Throw(String.Format("Expected '(', got '{0}' instead", sourceCode.NextCode));
            }

            List<Token> tokens = engine.BuildTokens(ref sourceCode, ref script, new[] {')'});

            sourceCode.SeekToNext(';'); // Go to the ;

            return new FixedToken(tokens);
        }
Exemplo n.º 5
0
        public override Token Build(Token lastToken, ScriptEngine engine, Script script, ref SourceCode sourceCode)
        {
            sourceCode += 6;

            string code = "";
            bool space = false;

            while ((++sourceCode).CurrentCode != ')')
            {
                if (sourceCode.CurrentCode == ' ' && !string.IsNullOrEmpty(code))
                {
                    space = true;
                }
                else
                {
                    if (sourceCode.CurrentCode == ' ' && string.IsNullOrEmpty(code))
                    {
                        // Do nothing...
                    }
                    else if (sourceCode.CurrentCode == ' ')
                    {
                        space = true;
                    }
                    else
                    {
                        if (space)
                        {
                            sourceCode.Throw("Unexpected whitespace");
                        }
                        else
                        {
                            code += sourceCode.CurrentCode;
                        }
                    }
                }
            }

            return new TypeOfToken(code);
        }
Exemplo n.º 6
0
        public override Token Build(Token lastToken, ScriptEngine engine, Script script, ref SourceCode sourceCode)
        {
            sourceCode += 8; // Skip past function

            // Pattern
            // function functionName(args) { code }

            string functionName = "";
            var argumentNames = new List<string>();

            // Build the name first.
            while (sourceCode.SpecialChar)
            {
                sourceCode++;
            }

            bool space = false;
            while (sourceCode.CurrentCode != '(')
            {
                if (sourceCode.CurrentCode == ' ')
                {
                    space = true;
                }
                else
                {
                    if (space)
                    {
                        sourceCode.Throw("Unexpected Whitespace");
                    }
                    functionName += sourceCode.CurrentCode;
                }
                sourceCode++;
            }

            // Build up arguments now.
            sourceCode++;
            space = false;
            string arg = "";
            while (sourceCode.CurrentCode != ')')
            {
                char c = sourceCode.CurrentCode;
                if (c == ',')
                {
                    if (string.IsNullOrEmpty(arg))
                    {
                        sourceCode.Throw("Expected an argument.");
                    }
                    else
                    {
                        argumentNames.Add(arg);
                        space = false;
                        arg = "";
                    }
                }
                else
                {
                    if (char.IsWhiteSpace(c) && !string.IsNullOrEmpty(arg))
                    {
                        space = true;
                    }
                    else
                    {
                        if (space)
                        {
                            sourceCode.Throw("Unexpected whitespace");
                        }
                        else if (char.IsWhiteSpace(c))
                        {
                            // Do nothing...
                        }
                        else
                        {
                            arg += sourceCode.CurrentCode;
                        }
                    }
                }
                sourceCode++;
            }

            if (string.IsNullOrEmpty(arg))
            {
                sourceCode.Throw("Expected an argument.");
            }
            argumentNames.Add(arg);

            bool result = sourceCode.SeekToNext('{');

            List<List<List<Token>>> code = engine.BuildLongTokens(ref sourceCode, ref script, new[] {'}'});

            return new FunctionToken(functionName, argumentNames, code);
        }
Exemplo n.º 7
0
 public override void Build(ref SourceCode code, ref Script script, ScriptEngine engine, ConfigBuilder config)
 {
     string id = "";
     code += _identifier.Length;
     if (code.Peek() == '{' && _requiresID)
     {
         throw new Exception("Script block requires an ID.");
     }
     if (code.Peek() != '{')
     {
         code.SeekToNext('"');
         while (!(++code).EOF && code.CurrentCode != '"')
         {
             id += code.CurrentCode;
         }
         if (code.EOF)
         {
             code.Throw("Unexpected EOF");
         }
     }
     code.SeekToNext('{');
     var c = new Code(engine.BuildLongTokens(ref code, ref script, new[] {'}'}),
                      new Script(engine) {UseEngineGlobals = false});
     config.AddReturnElement(_identifier, new ScriptBlock {Code = c, Identifier = id});
 }
Exemplo n.º 8
0
            public override void Build(ref SourceCode code, ref Script script, ScriptEngine engine, ConfigBuilder config)
            {
                var items = new Dictionary<string, List<Token>>();

                code += _identifier.Length;
                if (code.Peek() != '{')
                {
                    throw new Exception("Syntax Error: Expected a {");
                }

                code.SeekToNext('{');

                while (!(++code).EOF && code.Peek() != '}')
                {
                    // We are expecting: identifier = (code);
                    while (code.SpecialChar)
                    {
                        code++;
                    }
                    string id = "";
                    bool space = false;
                    while (!code.EOF && code.CurrentCode != '=')
                    {
                        if (code.CurrentCode == ' ')
                        {
                            space = true;
                        }
                        else
                        {
                            if (space)
                            {
                                code--; // Rewind, so the error is where the space is.
                                code.Throw("Unexpected whitespace...");
                            }
                            id += code.CurrentCode;
                        }
                        code++;
                    }
                    if (code.EOF)
                    {
                        code.Throw("Unexpected EOF");
                    }
                    // Otherwise
                    code++;

                    List<Token> tokens = engine.BuildTokens(ref code, ref script, new[] {';'});

                    items.Add(id, tokens);
                }

                code.SeekToNext('}');

                config.AddReturnElement(_identifier, items);
            }