public override Statement Parse(Parser parser, Lexer.Token current)
{
string name = parser.Current.Lexeme;
parser.Consume("IDENTIFIER");
parser.Consume("LEFTBRACE");
var functions = new List <FunctionExpr>();
var members = new List <VarDefinitionStmt>();
do
{
var statement = parser.ParseNext();
if (statement is FunctionExpr)
{
functions.Add(statement as FunctionExpr);
}
else if (statement is VarDefinitionStmt)
{
members.Add(statement as VarDefinitionStmt);
}
else
{
throw new Exception("Unexpected statement type");
}
} while (parser.Peek().Type != "RIGHTBRACE");
parser.Consume("RIGHTBRACE");
return(new ClassDefinitionStmt(new IdentifierExpr(name), members, functions));
}
public override Statement Parse(Parser parser, Lexer.Token current)
{
var expr = parser.ParseExpression(0);
parser.Consume("SEMICOLON");
return(new ReturnStmt(expr));
}
public override Statement Parse(Parser parser, Lexer.Token current)
{
var name = parser.Current.Lexeme;
parser.Consume("IDENTIFIER");
string type = null;
if (parser.Peek().Type == "COLON")
{
type = ParseTypeSpecified(parser);
}
Expression initialValue = null;
if (parser.ConsumeOptional("ASSIGNMENT"))
{
initialValue = parser.ParseExpression(0);
}
else if (_constVariables)
{
throw new ParseException("Const variable declarations must have an initialiser.");
}
else if (type == null)
{
throw new ParseException("Type must be specified if not assigned at point of definition.");
}
parser.Consume("SEMICOLON");
return(new VarDefinitionStmt(new IdentifierExpr(name), new IdentifierExpr(type), _constVariables, initialValue));
}
public override Statement Parse(Parser parser, Lexer.Token current)
{
string name = null;
if (parser.Peek().Type == "IDENTIFIER")
{
name = parser.Current.Lexeme;
parser.Consume("IDENTIFIER");
}
parser.Consume("LEFTPAREN");
var parameters = ParseParameterList(parser).ToArray();
parser.Consume("RIGHTPAREN");
var token = parser.Peek();
if (token.Type == "LEFTBRACE")
{
var body = parser.ParseNext();
return(new FunctionDefinitionExpr(new IdentifierExpr(name), parameters, (Statement)body,
new IdentifierExpr("UNKNOWN")));
}
else if (token.Type == "RIGHTARROW")
{
parser.Consume("RIGHTARROW");
var body = parser.ParseExpression(0);
parser.Consume("SEMICOLON");
return(new LambdaDefinitionExpr(new IdentifierExpr(name), parameters, body,
new IdentifierExpr("UNKNOWN")));
}
throw new ParseException("Malformed function defintion");
}
public static Stmt.Member Member(this Parser parser)
{
Lexer.Token name = parser.Consume("Expected identifier after 'member'", Lexer.Token.TokenType.IDENTIFIER);
Expr initialiser = null;
if (parser.Match(Lexer.Token.TokenType.EQUAL))
{
initialiser = parser.Comparison();
return(new Stmt.Member(name, initialiser));
}
Stmt.Comma args = null;
if (parser.Match(Lexer.Token.TokenType.WITH))
{
args = parser.Comma();
}
Stmt.Block block = null;
if (parser.Match(Lexer.Token.TokenType.DO))
{
block = parser.Block();
}
return(new Stmt.Member(name, block, args));
}
public TrashObject Get(Lexer.Token name)
{
if (_elements.ContainsKey(name.Literal))
{
return(_elements[name.Literal]);
}
throw new Interpreter.RuntimeError($"Attempting to access non-existent element {name.Literal} of class {Name}");
}
private IDictionary <string, object> ParseObject()
{
Dictionary <string, object> dictionary = new Dictionary <string, object>();
this.lexer.NextToken();
for (;;)
{
Lexer.Token token = this.lexer.LookAhead();
if (token == Lexer.Token.None)
{
break;
}
if (token != Lexer.Token.Comma)
{
if (token == Lexer.Token.CurlyClose)
{
goto IL_56;
}
string key = this.EvalLexer(this.lexer.ParseString());
if (this.errorMessage != null)
{
goto Block_4;
}
token = this.lexer.NextToken();
if (token != Lexer.Token.Colon)
{
goto Block_5;
}
object value = this.ParseValue();
if (this.errorMessage != null)
{
goto Block_6;
}
dictionary[key] = value;
}
else
{
this.lexer.NextToken();
}
}
this.TriggerError("Invalid token");
return(null);
IL_56:
this.lexer.NextToken();
return(dictionary);
Block_4:
return(null);
Block_5:
this.TriggerError("Invalid token; expected ':'");
return(null);
Block_6:
return(null);
}
/// <summary>
/// 匹配一个Token
/// </summary>
/// <param name="Lex">词法分析器</param>
/// <param name="TokenToMatch">需要匹配的Token</param>
private static void MatchToken(Lexer Lex, Lexer.Token TokenToMatch)
{
if (Lex.CurrentToken != TokenToMatch)
{
throw new SyntaxException(Lex.Position, Lex.Line, Lex.Row,
String.Format("expect {0}, but found {1}.", Lexer.FormatToken(TokenToMatch), Lex.FormatCurrentToken()));
}
Lex.Next();
}
/// <summary>
/// 尝试匹配一个Token，若成功则向后推进
/// </summary>
/// <param name="Lex">词法分析器</param>
/// <param name="TokenToMatch">需要匹配的Token</param>
/// <returns>是否成功匹配</returns>
private static bool TryMatchToken(Lexer Lex, Lexer.Token TokenToMatch)
{
if (Lex.CurrentToken != TokenToMatch)
{
return(false);
}
Lex.Next();
return(true);
}
public void Define(Lexer.Token name, Class value)
{
if (_classes.ContainsKey(name.Literal))
{
_classes.Add(name.Literal, value);
}
else
{
_classes[name.Literal] = value;
}
}
public void Define(Lexer.Token name, TrashObject value)
{
if (!_values.ContainsKey(name.Literal))
{
_values.Add(name.Literal, value);
}
else
{
_values[name.Literal] = value;
}
}
public static Expr New(this Parser parser)
{
Lexer.Token name = parser.Consume("Expected identifier after 'new'", Lexer.Token.TokenType.IDENTIFIER);
Expr.Arg args = null;
if (parser.Match(Lexer.Token.TokenType.WITH))
{
args = parser.Arg();
}
return(new Expr.New(name, args));
}
/// <summary>
/// 解析二元表达式
///
/// 当优先级为0时退化到一元表达式
/// </summary>
/// <param name="Lex">词法分析器</param>
/// <param name="Priority">优先级</param>
/// <returns>解析结果</returns>
private static ASTNode_Expression ParseBinaryExpression(Lexer Lex, int Priority)
{
// 退化
if (Priority == 0)
{
return(ParseUnaryExpression(Lex));
}
// 递归解析左侧的表达式
ASTNode_Expression tRet = ParseBinaryExpression(Lex, Priority - 1);
// 检查是否为二元运算符
if (Lex.CurrentToken >= Lexer.Token.Plus && (int)Lex.CurrentToken < (int)Lexer.Token.Plus + BinaryOperatorPriorityTable.Length)
{
int tPriority = BinaryOperatorPriorityTable[Lex.CurrentToken - Lexer.Token.Plus];
if (tPriority > Priority) // 优先级不符，返回
{
return(tRet);
}
else
{
Priority = tPriority;
}
}
else
{
return(tRet);
}
// 循环解析右侧的表达式
while (true)
{
// 检查下一个算符的优先级
Lexer.Token tOpt = Lex.CurrentToken;
if (!(tOpt >= Lexer.Token.Plus && (int)tOpt < (int)Lexer.Token.Plus + BinaryOperatorPriorityTable.Length &&
BinaryOperatorPriorityTable[Lex.CurrentToken - Lexer.Token.Plus] == Priority))
{
break;
}
// 吃掉运算符
Lex.Next();
// 获取算符右侧
ASTNode_Expression tRight = ParseBinaryExpression(Lex, Priority - 1);
// 组合成二元AST树
tRet = new ASTNode_BinaryExpression(Lex.Line, BinaryOp.Plus + (tOpt - Lexer.Token.Plus), tRet, tRight);
}
return(tRet);
}
public static Expr Addition(this Parser parser)
{
Expr left = parser.Multiplication();
while (parser.Match(Lexer.Token.TokenType.PLUS, Lexer.Token.TokenType.MINUS))
{
Lexer.Token op = parser.Previous();
Expr right = parser.Multiplication();
left = new Expr.Binary(left, op, right);
}
return(left);
}
public static Expr Multiplication(this Parser parser)
{
Expr expr = parser.Unary();
while (parser.Match(Lexer.Token.TokenType.MULTIPLY, Lexer.Token.TokenType.DIVIDE))
{
Lexer.Token op = parser.Previous();
Expr right = parser.Unary();
expr = new Expr.Binary(expr, op, right);
}
return(expr);
}
public static Expr Dotted(this Parser parser)
{
Expr expr = parser.Grouping();
while (parser.Match(Lexer.Token.TokenType.DOT))
{
Lexer.Token op = parser.Previous();
Expr right = parser.Grouping();
expr = new Expr.Binary(expr, op, right);
}
return(expr);
}
public override Statement Parse(Parser parser, Lexer.Token current)
{
parser.Consume("LEFTPAREN");
var condition = parser.ParseExpression(0);
parser.Consume("RIGHTPAREN");
var trueBlock = ParseStatement(parser);
var falseBlock = parser.ConsumeOptional("ELSE") ? ParseStatement(parser) : null;
return(new IfStmt(condition, trueBlock, falseBlock));
}
Expr multiplication()
{
Expr expr = unary();
while (match(Lexer.Token.TokenType.MULTIPLY, Lexer.Token.TokenType.DIVIDE))
{
Lexer.Token op = previous();
Expr right = unary();
expr = new Expr.Binary(expr, op, right);
}
return(expr);
}
Expr addition()
{
Expr expr = multiplication();
while (match(Lexer.Token.TokenType.PLUS, Lexer.Token.TokenType.MINUS))
{
Lexer.Token op = previous();
Expr right = multiplication();
expr = new Expr.Binary(expr, op, right);
}
return(expr);
}
public Class GetClass(Lexer.Token name)
{
if (_classes.ContainsKey(name.Literal))
{
return(_classes[name.Literal]);
}
if (Enclosing != null)
{
return(Enclosing.GetClass(name));
}
throw new Interpreter.RuntimeError($"Attempting to access undefined class {name.Literal}");
}
Stmt assignment()
{
Lexer.Token name = consume("Expected identifier after 'let'", Lexer.Token.TokenType.IDENTIFIER);
Expr initialiser = null;
if (match(Lexer.Token.TokenType.EQUAL))
{
initialiser = condition();
}
consume("Expected new line after variable declaration", Lexer.Token.TokenType.NEWLINE, Lexer.Token.TokenType.EOF);
return(new Stmt.Assign(name, initialiser));
}
// currently returns null if not a value
// should probably make it throw an error?
public object Access(Lexer.Token name = null)
{
if (_type == ObjectType.CLASS && name != null)
{
if (_elements.Contains(name))
{
return(_elements.Get(name));
}
throw new Interpreter.RuntimeError($"Trying to access non-existing element {name.Literal} of class {(_value as Class).Name}");
}
return(_value);
}
public object Get(Lexer.Token name)
{
if (values.ContainsKey(name.Literal))
{
return(values[name.Literal]);
}
if (Enclosing != null)
{
return(Enclosing.Get(name));
}
throw new Interpreter.RuntimeError("Attempting to access undefined variable " + name.Literal);
}
public static TrashObject RunOverride(this Interpreter interpreter, Lexer.Token op, TrashObject one, TrashObject two = null)
{
if (two != null)
{
var key = new Tuple <Lexer.Token.TokenType, TrashObject.ObjectType, TrashObject.ObjectType>(op.Type, one.GetType(), two.GetType());
// TrashML overrides to be considered first
if (_binary_overrides_t.ContainsKey(key))
{
// op1 and op2 are specifically defined variables for overrides
var env = new Environment(op.Literal, interpreter.IntEnvironment);
env.Define(new Lexer.Token {
Literal = "op1"
}, two);
env.Define(new Lexer.Token {
Literal = "op2"
}, two);
return(interpreter.ExecuteBlock(_binary_overrides_t[key], env));
}
if (_binary_overrides_c.ContainsKey(key))
{
return(_binary_overrides_c[key](one, two));
}
throw new Interpreter.RuntimeError($"Unable to find suitable override for {op.Literal} with types {one.GetType()}, {two.GetType()}");
}
var ukey = new Tuple <Lexer.Token.TokenType, TrashObject.ObjectType>(op.Type, one.GetType());
if (_unary_overrides_t.ContainsKey(ukey))
{
var env = new Environment(op.Literal, interpreter.IntEnvironment);
env.Define(new Lexer.Token {
Literal = "op1"
}, one);
return(interpreter.ExecuteBlock(_unary_overrides_t[ukey],
new Environment(op.Literal, interpreter.IntEnvironment)));
}
if (_unary_overrides_c.ContainsKey(ukey))
{
return(_unary_overrides_c[ukey](one));
}
throw new Interpreter.RuntimeError($"Unable to find suitable override for {op.Literal} with type {one.GetType()}");
}
public Class Add(Lexer.Token name, TrashObject body)
{
if (!Exists(name))
{
_keys.Add(name);
_elements.Add(name.Literal, body);
}
else
{
_elements[name.Literal] = body;
}
return(this);
}
Expr condition()
{
Expr left = addition();
if (match(Lexer.Token.TokenType.EQUAL, Lexer.Token.TokenType.BANG_EQUAL,
Lexer.Token.TokenType.LESS, Lexer.Token.TokenType.LESS_EQUAL,
Lexer.Token.TokenType.GREATER, Lexer.Token.TokenType.GREATER_EQUAL))
{
Lexer.Token op = previous();
Expr right = addition();
return(new Expr.Binary(left, op, right));
}
return(left);
}
public static Expr Condition(this Parser parser)
{
Expr left = parser.Addition();
while (parser.Match(Lexer.Token.TokenType.EQUAL_EQUAL, Lexer.Token.TokenType.BANG_EQUAL,
Lexer.Token.TokenType.LESS, Lexer.Token.TokenType.LESS_EQUAL,
Lexer.Token.TokenType.GREATER, Lexer.Token.TokenType.GREATER_EQUAL))
{
Lexer.Token op = parser.Previous();
Expr right = parser.Addition();
left = new Expr.Binary(left, op, right);
}
return(left);
}
public override Statement Parse(Parser parser, Lexer.Token current)
{
var statements = new List <Statement>();
do
{
var expression = ParseStatement(parser);
if (expression != null)
{
statements.Add(expression);
}
} while (parser.Current.Type != _endToken);
return(new ScopeBlockStmt(statements));
}
public List Parse()
{
Token = Lexer.GetNextToken();
if(Token != Lexer.Token.OPEN_PAREN)
ParseError("file does not start with '('");
List Result = InternParse();
if(Token != Lexer.Token.EOF) {
if(Token == Lexer.Token.CLOSE_PAREN)
ParseError("too many ')'");
else
ParseError("extra tokens at end of file");
}
return Result;
}
public static Stmt.Assign Assign(this Parser parser)
{
Lexer.Token name = parser.Consume("Expected identifier after 'let'", Lexer.Token.TokenType.IDENTIFIER);
Expr initialiser = null;
if (parser.Match(Lexer.Token.TokenType.EQUAL))
{
initialiser = parser.Comparison();
}
// this f***s up when doing with statements
// shouldn't be needed, but that's a testing thing
// parser.Consume("Expected new line after variable declaration", Lexer.Token.TokenType.NEWLINE, Lexer.Token.TokenType.EOF);
return(new Stmt.Assign(name, initialiser));
}
public static Expr Comparison(this Parser parser)
{
if (parser.Match(Lexer.Token.TokenType.NEW))
{
return(parser.New());
}
Expr left = parser.Condition();
if (parser.Match(Lexer.Token.TokenType.AND, Lexer.Token.TokenType.OR))
{
Lexer.Token op = parser.Previous();
Expr right = parser.Condition();
return(new Expr.Binary(left, op, right));
}
return(left);
}
protected override ResultOfProcess ProcessToken(Lexer.Token token)
{
mLastToken = token;
if (IsTerminateCondition(token))
{
mIsSuccessfulFinished = true;
return ResultOfProcess.Stop;
}
this.Context.Recovery(token);
var tmpOperatorLeaf = new Syntaxer.OperatorLeafs.OperatorLeaf(this.Context, this);
var tmpRez = tmpOperatorLeaf.Run();
mResult.Expression = tmpOperatorLeaf.Result;
return tmpRez;
}
public Token2yyToken(Lexer.Token token)
{
this.token = token;
}
private List InternParse()
{
ArrayList Entries = new ArrayList();
while(Token != Lexer.Token.CLOSE_PAREN && Token != Lexer.Token.EOF) {
switch(Token) {
case Lexer.Token.OPEN_PAREN:
Token = Lexer.GetNextToken();
if(Token == Lexer.Token.SYMBOL
&& Lexer.TokenString == "_") {
Token = Lexer.GetNextToken();
if(Token != Lexer.Token.STRING)
ParseError("Expected string after '(_ ' sequence");
// TODO translate
Entries.Add(Lexer.TokenString);
Token = Lexer.GetNextToken();
if(Token != Lexer.Token.CLOSE_PAREN)
ParseError("Expected ')' after '(_ \"\"' squence");
break;
}
Entries.Add(InternParse());
if(Token != Lexer.Token.CLOSE_PAREN)
ParseError("Expected ')' token, got " + Token);
break;
case Lexer.Token.SYMBOL:
Entries.Add(new Symbol(Lexer.TokenString));
break;
case Lexer.Token.STRING:
Entries.Add(Lexer.TokenString);
break;
case Lexer.Token.INTEGER:
int ival = Int32.Parse(Lexer.TokenString, NumberStyles.Integer, NumberFormatInfo.InvariantInfo);
Entries.Add(ival);
break;
case Lexer.Token.REAL:
float fval = Single.Parse(Lexer.TokenString, NumberStyles.Float, NumberFormatInfo.InvariantInfo);
Entries.Add(fval);
break;
case Lexer.Token.TRUE:
Entries.Add(true);
break;
case Lexer.Token.FALSE:
Entries.Add(false);
break;
default:
ParseError("Unexpected Token " + Token);
break;
}
Token = Lexer.GetNextToken();
}
return new List(Entries.ToArray());
}
public Lexer.Token NextToken()
{
Lexer.Token token = new Lexer.Token();
token.Value = 0d;
token.IntValue = 0;
this.skip();
if(this._currentIndex >= this._sourceLength)
{
token.String = Lexer.Token.BASIC_END_OF_FILE;
token.Type = Lexer.Token.I_BASIC_END_OF_FILE;
}
else
{
//Tokenization takes place here
if(char.IsDigit(this.getCurrentCharacter()) || this.getCurrentCharacter() == '-')
{
token.Type = Lexer.Token.I_BASIC_NUMBER;
string numberString;
token.Value = this.number(out numberString);
token.String = numberString;
}
else if(char.IsLetter(this.getCurrentCharacter()))
{
token.Type = Lexer.Token.I_BASIC_STRING;
token.String = this.identifier();
switch (token.String)
{
#region Data Tokens...
case Lexer.Token.DATA_VERTEX:
token.Type = Lexer.Token.I_DATA_VERTEX;
break;
case Lexer.Token.DATA_VERTEX_NORMAL:
token.Type = Lexer.Token.I_DATA_VERTEX_NORMAL;
break;
case Lexer.Token.DATA_TEXTURE_VERTEX:
token.Type = Lexer.Token.I_DATA_TEXTURE_VERTEX;
break;
case Lexer.Token.DATA_PARAMETER_SPACE_VERTEX:
token.Type = Lexer.Token.I_DATA_PARAMETER_SPACE_VERTEX;
break;
case Lexer.Token.DATA_BASIS_MATRIX:
token.Type = Lexer.Token.I_DATA_BASIS_MATRIX;
break;
case Lexer.Token.DATA_DEGREE:
token.Type = Lexer.Token.I_DATA_DEGREE;
break;
case Lexer.Token.DATA_RATIONAL_NON_RATIONAL_CURVE_OR_SURFACE_DATA:
token.Type = Lexer.Token.I_DATA_RATIONAL_NON_RATIONAL_CURVE_OR_SURFACE_DATA;
break;
case Lexer.Token.DATA_STEP_SIZE:
token.Type = Lexer.Token.I_DATA_STEP_SIZE;
break;
#endregion
#region Element Tokens...
case Lexer.Token.ELEMENT_POINT:
token.Type = Lexer.Token.I_ELEMENT_POINT;
break;
case Lexer.Token.ELEMENT_LINE:
token.Type = Lexer.Token.I_ELEMENT_LINE;
break;
case Lexer.Token.ELEMENT_FACE:
token.Type = Lexer.Token.I_ELEMENT_FACE;
break;
case Lexer.Token.ELEMENT_CURVE:
token.Type = Lexer.Token.I_ELEMENT_CURVE;
break;
case Lexer.Token.ELEMENT_2D_CURVE:
token.Type = Lexer.Token.I_ELEMENT_2D_CURVE;
break;
case Lexer.Token.ELEMENT_SURFACE:
token.Type = Lexer.Token.I_ELEMENT_SURFACE;
break;
#endregion
#region Freeform Tokens...
case Lexer.Token.FREEFORM_PARAMETER_VALUE:
token.Type = Lexer.Token.I_FREEFORM_PARAMETER_VALUE;
break;
case Lexer.Token.FREEFORM_SPECIAL_POINT:
token.Type = Lexer.Token.I_FREEFORM_SPECIAL_POINT;
break;
case Lexer.Token.FREEFORM_SPECIAL_CURVE:
token.Type = Lexer.Token.I_FREEFORM_SPECIAL_CURVE;
break;
case Lexer.Token.FREEFORM_OUTER_TRIMMING_LOOP:
token.Type = Lexer.Token.I_FREEFORM_OUTER_TRIMMING_LOOP;
break;
case Lexer.Token.FREEFORM_INNER_TRIMMING_LOOP:
token.Type = Lexer.Token.I_FREEFORM_INNER_TRIMMING_LOOP;
break;
case Lexer.Token.FREEFORM_END_STATEMENT:
token.Type = Lexer.Token.I_FREEFORM_END_STATEMENT;
break;
case Lexer.Token.FREEFORM_SURFACE_CONNECT:
token.Type = Lexer.Token.I_FREEFORM_SURFACE_CONNECT;
break;
#endregion
#region Grouping Tokens...
case Lexer.Token.GROUPING_GROUP_NAME:
token.Type = Lexer.Token.I_GROUPING_GROUP_NAME;
break;
case Lexer.Token.GROUPING_MERGING_GROUP:
token.Type = Lexer.Token.I_GROUPING_MERGING_GROUP;
break;
case Lexer.Token.GROUPING_OBJECT_NAME:
token.Type = Lexer.Token.I_GROUPING_OBJECT_NAME;
break;
case Lexer.Token.GROUPING_SMOOTHING_GROUP:
token.Type = Lexer.Token.I_GROUPING_SMOOTHING_GROUP;
break;
#endregion
#region Render Tokens...
case Lexer.Token.RENDER_BEVEL_INTERPOLATION:
token.Type = Lexer.Token.I_RENDER_BEVEL_INTERPOLATION;
break;
case Lexer.Token.RENDER_COLOR_INTERPOLATION:
token.Type = Lexer.Token.I_RENDER_COLOR_INTERPOLATION;
break;
case Lexer.Token.RENDER_CURVE_APPROXIMATION_TECHNIQUE:
token.Type = Lexer.Token.I_RENDER_CURVE_APPROXIMATION_TECHNIQUE;
break;
case Lexer.Token.RENDER_DISSOLVE_INTERPOLATION:
token.Type = Lexer.Token.I_RENDER_DISSOLVE_INTERPOLATION;
break;
case Lexer.Token.RENDER_LEVEL_OF_DETAIL:
token.Type = Lexer.Token.I_RENDER_LEVEL_OF_DETAIL;
break;
case Lexer.Token.RENDER_MATERIAL_LIBRARY:
token.Type = Lexer.Token.I_RENDER_MATERIAL_LIBRARY;
StringBuilder pathBuilder = new StringBuilder();
this.nextCharacter();
while (this.getCurrentCharacter() != '\n')
{
pathBuilder.Append(this.getCurrentCharacter());
this.nextCharacter();
}
token.String = pathBuilder.ToString().Trim();
this._currentIndex--;
break;
case Lexer.Token.RENDER_MATERIAL_NAME:
token.Type = Lexer.Token.I_RENDER_MATERIAL_NAME;
break;
case Lexer.Token.RENDER_RAY_TRACING:
token.Type = Lexer.Token.I_RENDER_RAY_TRACING;
break;
case Lexer.Token.RENDER_SHADOW_CASTING:
token.Type = Lexer.Token.I_RENDER_SHADOW_CASTING;
break;
case Lexer.Token.RENDER_SURFACE_APPROXIMATION_TECHNIQUE:
token.Type = Lexer.Token.I_RENDER_SURFACE_APPROXIMATION_TECHNIQUE;
break;
#endregion
}
}
else
{
token.String = this.getCurrentCharacter().ToString();
switch(token.String)
{
case "/":
token.Type = Lexer.Token.I_BASIC_SEPERATOR;
break;
case ".":
token.Type = Lexer.Token.I_BASIC_SEPERATOR;
break;
case "\\":
token.Type = Lexer.Token.I_BASIC_SEPERATOR;
break;
case "#":
token.Type = Lexer.Token.I_BASIC_COMMENT;
StringBuilder commentBuilder = new StringBuilder();
do
{
commentBuilder.Append(this.nextCharacter());
}
while (this.getCurrentCharacter() != '\n');
token.String = commentBuilder.ToString().Trim();
break;
}
}
}
this.nextCharacter();
return token;
}
private void NextToken()
{
this._currentToken = this._lexer.NextToken();
}
