public List <object> Allow; //判断条件
public TempCase(Script script, List <object> allow, ScriptExecutable executable, Executable_Block block)
{
m_Script = script;
this.Allow = allow;
this.Executable = executable;
this.Block = block;
}
public CodeObject Allow; //判断条件
public TempCondition(Script script, CodeObject allow, ScriptExecutable executable, Executable_Block block)
{
m_Script = script;
this.Allow = allow;
this.Executable = executable;
this.Block = block;
}
private ScriptExecutable ParseStatementBlock(Executable_Block block, bool readLeftBrace, Scorpio.Compiler.TokenType finished)
{
this.BeginExecutable(block);
if (readLeftBrace && (this.PeekToken().Type != Scorpio.Compiler.TokenType.LeftBrace))
{
this.ParseStatement();
if (this.PeekToken().Type == Scorpio.Compiler.TokenType.SemiColon)
{
this.ReadToken();
}
}
else
{
if (readLeftBrace)
{
this.ReadLeftBrace();
}
while (this.HasMoreTokens())
{
if (this.ReadToken().Type == finished)
{
break;
}
this.UndoToken();
this.ParseStatement();
}
}
ScriptExecutable scriptExecutable = this.m_scriptExecutable;
scriptExecutable.EndScriptInstruction();
this.EndExecutable();
return(scriptExecutable);
}
/// <summary>
/// Conscructs a script associated with the given ScriptManager
/// and using the given resource name.
/// </summary>
/// <param name="scriptManager">ScriptManager associated with
/// the script.</param>
/// <param name="strScriptName">Resource name for loading the
/// script.</param>
public Script(ScriptManager scriptManager, String strScriptName)
{
m_scriptManager = scriptManager;
m_strName = strScriptName;
try
{
LoadScript(strScriptName);
ScriptLexer scriptLexer = new ScriptLexer(m_listSourceLines);
List <Token> listTokens = scriptLexer.GetTokens();
// parse/compile script
ScriptParser scriptParser = new ScriptParser(this, listTokens);
scriptParser.DebugMode = m_scriptManager.DebugMode;
m_scriptExecutable = scriptParser.Parse();
// optimise
if (m_scriptManager.OptimiseCode)
{
ExecutionOptimiser executionOptimiser
= new ExecutionOptimiser(m_scriptExecutable);
executionOptimiser.OptimiserInfo = false;
executionOptimiser.Optimise();
}
}
catch (Exception exception)
{
throw new UbikException(
"Error while loading or compiling script '" + strScriptName
+ "'.", exception);
}
}
//解析区域代码内容( {} 之间的内容)
private ScriptExecutable ParseStatementBlock(Executable_Block block, bool readLeftBrace, TokenType finished)
{
BeginExecutable(block);
if (readLeftBrace && PeekToken().Type != TokenType.LeftBrace)
{
ParseStatement();
if (PeekToken().Type == TokenType.SemiColon)
{
ReadToken();
}
}
else
{
if (readLeftBrace)
{
ReadLeftBrace();
}
TokenType tokenType;
while (HasMoreTokens())
{
tokenType = ReadToken().Type;
if (tokenType == finished)
{
break;
}
UndoToken();
ParseStatement();
}
}
ScriptExecutable ret = m_scriptExecutable;
ret.EndScriptInstruction();
EndExecutable();
return(ret);
}
public ScorpioScriptFunction(Script script, List <String> listParameters, ScriptExecutable scriptExecutable, bool bParams)
{
this.m_Script = script;
this.m_ListParameters = listParameters.ToArray();
this.m_ScriptExecutable = scriptExecutable;
this.m_ParameterCount = listParameters.Count;
this.m_Params = bParams;
}
private ScriptScriptFunction ParseFunctionDeclaration(bool needName)
{
Token token = this.ReadToken();
if (token.Type != Scorpio.Compiler.TokenType.Function)
{
throw new ParserException("Function declaration must start with the 'function' keyword.", token);
}
string name = needName ? this.ReadIdentifier() : ((this.PeekToken().Type == Scorpio.Compiler.TokenType.Identifier) ? this.ReadIdentifier() : "");
List <string> listParameters = new List <string>();
bool bParams = false;
Token token2 = this.ReadToken();
if (token2.Type != Scorpio.Compiler.TokenType.LeftPar)
{
goto Label_0107;
}
if (this.PeekToken().Type == Scorpio.Compiler.TokenType.RightPar)
{
goto Label_00F9;
}
Label_0073:
token = this.ReadToken();
if (token.Type == Scorpio.Compiler.TokenType.Params)
{
token = this.ReadToken();
bParams = true;
}
if (token.Type != Scorpio.Compiler.TokenType.Identifier)
{
throw new ParserException("Unexpected token '" + token.Lexeme + "' in function declaration.", token);
}
string item = token.Lexeme.ToString();
listParameters.Add(item);
token = this.PeekToken();
if ((token.Type == Scorpio.Compiler.TokenType.Comma) && !bParams)
{
this.ReadComma();
goto Label_0073;
}
if (token.Type != Scorpio.Compiler.TokenType.RightPar)
{
throw new ParserException("Comma ',' or right parenthesis ')' expected in function declararion.", token);
}
Label_00F9:
this.ReadRightParenthesis();
token2 = this.ReadToken();
Label_0107:
if (token2.Type == Scorpio.Compiler.TokenType.LeftBrace)
{
this.UndoToken();
}
ScriptExecutable scriptExecutable = this.ParseStatementBlock(Executable_Block.Function);
return(new ScriptScriptFunction(this.m_script, name, new ScorpioScriptFunction(this.m_script, listParameters, scriptExecutable, bParams)));
}
//解析函数（返回一个函数）
private ScriptScriptFunction ParseFunctionDeclaration(bool needName)
{
Token token = ReadToken();
if (token.Type != TokenType.Function)
{
throw new ParserException("Function declaration must start with the 'function' keyword.", token);
}
String strFunctionName = needName ? ReadIdentifier() : (PeekToken().Type == TokenType.Identifier ? ReadIdentifier() : "");
List <String> listParameters = new List <String>();
bool bParams = false;
Token peek = ReadToken();
if (peek.Type == TokenType.LeftPar)
{
if (PeekToken().Type != TokenType.RightPar)
{
while (true)
{
token = ReadToken();
if (token.Type == TokenType.Params)
{
token = ReadToken();
bParams = true;
}
if (token.Type != TokenType.Identifier)
{
throw new ParserException("Unexpected token '" + token.Lexeme + "' in function declaration.", token);
}
String strParameterName = token.Lexeme.ToString();
listParameters.Add(strParameterName);
token = PeekToken();
if (token.Type == TokenType.Comma && !bParams)
{
ReadComma();
}
else if (token.Type == TokenType.RightPar)
{
break;
}
else
{
throw new ParserException("Comma ',' or right parenthesis ')' expected in function declararion.", token);
}
}
}
ReadRightParenthesis();
peek = ReadToken();
}
if (peek.Type == TokenType.LeftBrace)
{
UndoToken();
}
ScriptExecutable executable = ParseStatementBlock(Executable_Block.Function);
return(new ScriptScriptFunction(m_script, strFunctionName, new ScorpioScriptFunction(m_script, listParameters, executable, bParams)));
}
/// <summary>
/// Constructs a script function for the given
/// <see cref="ScriptExecutable"/>, with the given name, parameter
/// count and entry point into the executable.
/// </summary>
/// <param name="scriptExecutable">Executable form of the
/// <see cref="Script"/>.</param>
/// <param name="strName">Script function name.</param>
/// <param name="listParameters">List of parameter names.</param>
/// <param name="scriptInstructionEntryPoint">Entry point
/// <see cref="ScriptInstruction"/> in the executable.</param>
public ScriptFunction(ScriptExecutable scriptExecutable,
String strName, List <String> listParameters,
ScriptInstruction scriptInstructionEntryPoint)
{
m_scriptExecutable = scriptExecutable;
m_strName = strName;
m_listParameters = new List <string>(listParameters);
m_scriptInstructionEntryPoint = scriptInstructionEntryPoint;
}
public ScorpioScriptFunction(Script script, List <String> listParameters, ScriptExecutable scriptExecutable, bool bParams)
{
this.m_Script = script;
this.m_ListParameters = new List <string>(listParameters);
this.m_ScriptExecutable = scriptExecutable;
this.m_ParameterCount = listParameters.Count;
this.m_Params = bParams;
this.m_ParamsArray = bParams ? script.CreateArray() : null;
this.m_Context = new ScriptContext(m_Script, m_ScriptExecutable, null, Executable_Block.Function);
}
public ScriptObject LoadTokens(String strBreviary, List <Token> tokens)
{
try {
m_StackInfoStack.Clear();
ScriptParser scriptParser = new ScriptParser(this, tokens, strBreviary);
ScriptExecutable scriptExecutable = scriptParser.Parse();
return(new ScriptContext(this, scriptExecutable, null, Executable_Block.Context).Execute());
} catch (System.Exception e) {
throw new ScriptException("load tokens [" + strBreviary + "] is error : " + e.ToString());
}
}
private ScriptObject Load(String strBreviary, List <Token> tokens, ScriptContext context)
{
if (tokens.Count == 0)
{
return(m_Null);
}
ScriptParser scriptParser = new ScriptParser(this, tokens, strBreviary);
ScriptExecutable scriptExecutable = scriptParser.Parse();
return(new ScriptContext(this, scriptExecutable, context, Executable_Block.Context).Execute());
}
internal ScriptObject LoadString(String strBreviary, String strBuffer, ScriptContext context)
{
try {
m_StackInfoStack.Clear();
ScriptLexer scriptLexer = new ScriptLexer(strBuffer);
strBreviary = Util.IsNullOrEmpty(strBreviary) ? scriptLexer.GetBreviary() : strBreviary;
ScriptParser scriptParser = new ScriptParser(this, scriptLexer.GetTokens(), strBreviary);
ScriptExecutable scriptExecutable = scriptParser.Parse();
return(new ScriptContext(this, scriptExecutable, context, Executable_Block.Context).Execute());
} catch (System.Exception e) {
throw new ScriptException("load buffer [" + strBreviary + "] is error : " + e.ToString());
}
}
/**
* Evaluate script
*
* @param stream The stream that contains the script
* @return The exit status
* @throws IOException
*/
public JavaScriptObject Execute(Stream stream)
{
foreach (Function customFunction in CustomFunctions)
{
this.scope.SetFunction(customFunction);
}
Lexer lexer = new Lexer(stream);
Parser parser = new Parser(lexer);
ScriptExecutable executable = parser.Parse();
return(executable.Run(scope));
}
/// <summary>
/// Calls the executable operation and runs the script
/// </summary>
public void Run()
{
Running = true;
CurrentRunningScript = ScriptPath;
Debug.Assert(ScriptExecutable != null, "Call Compile on this script before you run it");
ScriptExecutable.PerformOperation();
// Reset the current scope to the global scope
CelesteStack.Scopes.Remove(ScriptScope);
CelesteStack.CurrentScope = CelesteStack.GlobalScope;
// Clear the stack - there should be no objects on the stack over different scripts
CelesteStack.Clear();
Running = false;
}
//解析try catch
private void ParseTry()
{
CodeTry ret = new CodeTry();
{
ScriptExecutable exec = ParseStatementBlock(Executable_Block.Context);
ret.TryContext = new ScriptContext(m_script, exec);
}
{
ReadCatch();
ReadLeftParenthesis();
ret.Identifier = ReadIdentifier();
ReadRightParenthesis();
ScriptExecutable exec = ParseStatementBlock(Executable_Block.Context);
ret.CatchContext = new ScriptContext(m_script, exec);
}
m_scriptExecutable.AddScriptInstruction(new ScriptInstruction(Opcode.CALL_TRY, ret));
}
public ScriptContext Context; //指令执行
public TempCondition(Script script, CodeObject allow, ScriptExecutable executable, Executable_Block block)
{
this.Allow = allow;
this.Executable = executable;
this.Context = new ScriptContext(script, executable, null, block);
}
public CodeObject[] Allow; //判断条件
public TempCase(Script script, List <CodeObject> allow, ScriptExecutable executable)
{
this.Allow = allow != null?allow.ToArray() : new CodeObject[0];
this.Executable = executable;
}
public ScriptScriptFunction Parse()
{
ScriptExecutable executable = ParseStatementBlock(Executable_Block.Function, false, TokenType.Finished);
return(new ScriptScriptFunction(m_script, "", new ScorpioScriptFunction(m_script, new List <String>(), executable, false)));
}
public void EndExecutable()
{
this.m_Executables.Pop();
this.m_scriptExecutable = (this.m_Executables.Count > 0) ? this.m_Executables.Peek() : null;
}
public void BeginExecutable(Executable_Block block)
{
this.m_scriptExecutable = new ScriptExecutable(block);
this.m_Executables.Push(this.m_scriptExecutable);
}
public ScriptContext Context; //指令执行
public TempCase(Script script, List <object> allow, ScriptExecutable executable, Executable_Block block)
{
this.Allow = allow;
this.Executable = executable;
this.Context = new ScriptContext(script, executable, null, block);
}
public void SetContextExecutable(ScriptExecutable blockExecutable)
{
BlockExecutable = blockExecutable;
BlockContext = new ScriptContext(m_Script, blockExecutable, null, Executable_Block.For);
}
public void EndExecutable()
{
m_Executables.Pop();
m_scriptExecutable = (m_Executables.Count > 0) ? m_Executables.Peek() : null;
}
public void BeginExecutable(Executable_Block block)
{
m_scriptExecutable = new ScriptExecutable(block);
m_Executables.Push(m_scriptExecutable);
}
public ExecutionOptimiser(ScriptExecutable scriptExecutable)
{
m_bOptimiserInfo = false;
m_scriptExecutable = scriptExecutable;
}
public CodeCallBlock(ScriptExecutable executable)
{
this.Executable = executable;
}