//解析区域代码内容 ({} 之间的内容)
private void ParseStatement()
{
Token token = ReadToken();
switch (token.Type)
{
case TokenType.Var:
ParseVar();
break;
case TokenType.LeftBrace:
ParseBlock();
break;
case TokenType.If:
ParseIf();
break;
case TokenType.For:
ParseFor();
break;
case TokenType.Foreach:
ParseForeach();
break;
case TokenType.While:
ParseWhile();
break;
case TokenType.Switch:
ParseSwtich();
break;
case TokenType.Try:
ParseTry();
break;
case TokenType.Throw:
ParseThrow();
break;
case TokenType.Return:
ParseReturn();
break;
case TokenType.Sharp:
ParseSharp();
break;
case TokenType.Identifier:
case TokenType.Increment:
case TokenType.Decrement:
case TokenType.Eval:
ParseExpression();
break;
case TokenType.Break:
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.BREAK, new CodeObject(m_strBreviary, token.SourceLine)));
break;
case TokenType.Continue:
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.CONTINUE, new CodeObject(m_strBreviary, token.SourceLine)));
break;
case TokenType.Function:
ParseFunction();
break;
case TokenType.SemiColon:
break;
default:
throw new ParserException("不支持的语法 ", token);
}
}
//解析区域代码内容 ({} 之间的内容)
private void ParseStatement()
{
Token token = ReadToken();
switch (token.Type)
{
case TokenType.Var:
{
string str = ReadIdentifier();
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.VAR, str));
Token peek = PeekToken();
if (peek.Type == TokenType.Assign)
{
UndoToken();
ParseStatement();
}
else if (peek.Type == TokenType.Comma)
{
while (PeekToken().Type == TokenType.Comma)
{
ReadToken();
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.VAR, ReadIdentifier()));
}
}
}
break;
case TokenType.LeftBrace:
ParseBlock();
break;
case TokenType.If:
ParseIf();
break;
case TokenType.For:
ParseFor();
break;
case TokenType.Foreach:
ParseForeach();
break;
case TokenType.While:
ParseWhile();
break;
case TokenType.Switch:
ParseSwtich();
break;
case TokenType.Try:
ParseTry();
break;
case TokenType.Throw:
ParseThrow();
break;
case TokenType.Return:
{
Token peek = PeekToken();
if (peek.Type == TokenType.RightBrace ||
peek.Type == TokenType.SemiColon ||
peek.Type == TokenType.Finished)
{
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.RET, new CodeScriptObject(m_script, null)));
}
else
{
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.RET, GetObject()));
}
}
break;
case TokenType.Identifier:
case TokenType.Increment:
case TokenType.Decrement:
case TokenType.Eval:
UndoToken();
ParseExpression();
break;
case TokenType.Break:
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.BREAK, new CodeObject(m_strBreviary, token.SourceLine)));
break;
case TokenType.Continue:
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.CONTINUE, new CodeObject(m_strBreviary, token.SourceLine)));
break;
case TokenType.Function:
ParseFunction();
break;
case TokenType.SemiColon:
break;
default:
throw new ParserException("不支持的语法 ", token);
}
}
