コード例 #1
0
	// Parse a left hand side expression.
	private JNode LeftHandSideExpression()
			{
				JNode expr = MemberExpression();
				JNode expr2;
				while(token == JSToken.LeftParen ||
				      token == JSToken.LeftBracket ||
					  token == JSToken.AccessField)
				{
					if(token == JSToken.LeftParen)
					{
						// Parse a function call expression.
						NextToken();
						expr2 = ArgumentList();
						if(token == JSToken.RightParen)
						{
							if(IsBuiltinCall(expr, "eval"))
							{
								expr = new JEval
										(Context.BuildRange
											(expr.context, tokenInfo),
										 expr2);
							}
							else if(IsBuiltinCall(expr, "print") &&
									printSupported)
							{
								expr = new JPrint
										(Context.BuildRange
											(expr.context, tokenInfo),
										 expr2);
							}
							else
							{
								expr = new JCall
										(Context.BuildRange(expr.context,
															tokenInfo),
										 expr, expr2);
							}
							NextToken();
						}
						else
						{
							SyntaxError("`)' expected");
						}
					}
					else if(token == JSToken.LeftBracket)
					{
						// Parse an array access expression.
						NextToken();
						expr2 = Expression();
						if(token == JSToken.RightBracket)
						{
							expr = new JArrayAccess
									(Context.BuildRange(expr.context,
														tokenInfo),
									 expr, expr2);
							NextToken();
						}
						else
						{
							SyntaxError("`]' expected");
						}
					}
					else
					{
						// Parse a field access expression.
						NextToken();
						if(token == JSToken.Identifier)
						{
							expr = new JFieldAccess
									(Context.BuildRange(expr.context,
														tokenInfo),
									 expr, scanner.GetIdentifierName());
							NextToken();
						}
						else
						{
							SyntaxError("identifier expected");
						}
					}
				}
				return expr;
			}
コード例 #2
0
	// Parse a member expression.
	private JNode MemberExpression()
			{
				JNode expr = null;
				JNode expr2;
				Context save;
				switch(token)
				{
					case JSToken.Function:
					{
						// Inline function definition.
						expr = FunctionExpression();
					}
					break;

					case JSToken.New:
					{
						// Object construction, with arguments.
						save = tokenInfo.MakeCopy();
						NextToken();
						expr = MemberExpression();
						if(token == JSToken.LeftParen)
						{
							NextToken();
							expr2 = Arguments();
							if(token == JSToken.RightParen)
							{
								expr = new JNew(Context.BuildRange
													(save, tokenInfo),
												expr, expr2);
								NextToken();
							}
							else
							{
								SyntaxError("`)' expected");
							}
						}
						else
						{
							expr = new JNew(Context.BuildRange
												(save, expr.context),
											expr, null);
						}
					}
					break;

					default:
					{
						// Parse a primary expression.
						expr = PrimaryExpression();
					}
					break;
				}
				while(token == JSToken.LeftBracket ||
				      token == JSToken.AccessField)
				{
					if(token == JSToken.LeftBracket)
					{
						// Parse an array access expression.
						NextToken();
						expr2 = Expression();
						if(token == JSToken.RightBracket)
						{
							expr = new JArrayAccess
									(Context.BuildRange(expr.context,
														tokenInfo),
									 expr, expr2);
							NextToken();
						}
						else
						{
							SyntaxError("`]' expected");
						}
					}
					else
					{
						// Parse a field access expression.
						NextToken();
						if(token == JSToken.Identifier)
						{
							expr = new JFieldAccess
									(Context.BuildRange(expr.context,
														tokenInfo),
									 expr, scanner.GetIdentifierName());
							NextToken();
						}
						else
						{
							SyntaxError("identifier expected");
						}
					}
				}
				return expr;
			}