Êóðñîâàÿ ðàáîòà: Èíòåðàêòèâíûé èíòåðïðåòàòîð
(m_operators[j] as WhileOperator).LoopPos = i;
break;
}
case OperatorKind.Next:
{
if (stk.Count == 0)
throw new SyntaxErrorException("Ëèøíåå next");
int j = (int) stk.Pop();
if ((m_operators[j] as IOperator).GetKind() != OperatorKind.For)
throw new SyntaxErrorException("Ëèøíåå next");
(m_operators[i] as NextOperator).ForPos = j;
(m_operators[i] as NextOperator).ForOp = (m_operators[j] as ForOperator);
(m_operators[j] as ForOperator).NextPos = i;
break;
}
}
}
if (stk.Count != 0)
throw new SyntaxErrorException("Íå çàêðûòûé áëîê");
}
catch (SyntaxErrorException ex) {
throw new LineSyntaxException(ex.Message, m_name, i + 1);
}
m_count = m_operators.Count;
}
private string m_name;
private ArrayList m_args = new ArrayList();
private ArrayList m_operators = new ArrayList();
private int m_count;
public int ReqCount {
get { return m_args.Count; }
}
public VarBase Perform(ArgList al) {
Namespace ns = new Namespace(InterprEnvironment.Instance.CurrentNamespace);
ns["result"] = new IntVar(0);
int argc = m_args.Count;
if (al.Count != argc)
throw new CalcException("Íåâåðíîå ÷èñëî ïàðàìåòðîâ");
al.Reset();
for (int i = 0; i < argc; i++) {
ns[m_args[i] as System.String] = al.Get();
}
InterprEnvironment.Instance.CurrentNamespace = ns;
Moment moment = new Moment(this);
if (m_count > 1) {
try {
moment.Run();
}
catch (SyntaxErrorException ex) {
throw ex;
}
catch (CalcException ex) {
throw new CalcException("Îøèáêà â ôóíêöèè " + m_name + "[] â ñòðîêå " + (moment.Pos + 1) + " : " + ex.Message);
}
}
VarBase res = ns["result"];
InterprEnvironment.Instance.CurrentNamespace = ns.PreviousNamespace;
if (res == null)
throw new CalcException("Îøèáêà â ôóíêöèè " + m_name + "[] : ïåðåìåííàÿ result íå îïðåäåëåíà íà ìîìåíò âûõîäà");
return res;
}
public class Moment {
private Subroutine m_sub;
private int m_pos;
private static int s_break = 0;
public static void Break() {
Interlocked.Exchange(ref s_break, 1);
}
public int Pos {
get { return m_pos; }
}
public Moment(Subroutine sub) {
m_sub = sub;
m_pos = 1;
s_break = 0;
}
public void GoTo(int to) {
m_pos = to;
}
public void Next() {
m_pos++;
}
public void Run() {
while (m_pos < m_sub.m_count) {
if (s_break == 1)
throw new CalcException("Ïðåðâàíî ïîëüçîâàòåëåì");
(m_sub.m_operators[m_pos] as IOperator).Execute(this);
}
}
public void Return() {
m_pos = m_sub.m_count;
}
public IOperator Current {
get { return m_sub.m_operators[m_pos] as IOperator; }
}
}
}
}
17. Êëàññ Facade.
using System.Threading;
using interpr.logic;
using interpr.logic.operators;
namespace interpr {
public class Facade {
private static Facade s_instance = null;
public static void Create(IConsole console) {
if (s_instance == null)
s_instance = new Facade(console);
}
public static Facade Instance {
get { return s_instance; }
}
private IConsole m_console;
private InterprEnvironment m_env;
private string m_cmd;
private bool m_doing = false;
private Facade(IConsole console) {
m_console = console;
m_env = InterprEnvironment.Instance;
m_env.CurrentConsole = m_console;
}
public delegate void CommandDoneHandler();
public event CommandDoneHandler Done;
private void ThrStart() {
m_doing = true;
Command cmd;
do {
try {
cmd = LineCompiler.CompileCommand(m_cmd);
}
catch (SyntaxErrorException ex) {
m_env.CurrentConsole.PrintLn("Îøèáêà : " + ex.Message);
break;
}
try {
cmd.Execute();
}
catch (CalcException ex) {
m_env.CurrentConsole.PrintLn("Îøèáêà : " + ex.Message);
m_env.CurrentNamespace = m_env.ConsoleNamespace;
break;
}
} while (false);
Done();
m_doing = false;
}
public void ExecuteCommand(string cmd) {
if (m_doing)
throw new OtherException("Error in Bridge.ExecuteCommand()");
m_cmd = cmd;
new Thread(new ThreadStart(ThrStart)).Start();
}
private void DoRestart() {
if (m_doing)
Subroutine.Moment.Break();
while (m_doing) {}
InterprEnvironment.Reset();
m_env = InterprEnvironment.Instance;
m_env.CurrentConsole = m_console;
m_env.LoadSubs();
}
public void Restart() {
new Thread(new ThreadStart(DoRestart)).Start();
}
public bool Busy {
get { return m_doing; }
}
public void SaveVariables() {
m_env.SaveVars();
}
public void LoadSubs() {
m_env.LoadSubs();
}
public ConsoleNamespace.VariableReport[] GetVariables() {
return m_env.GetGlobalVarsList();
}
public string[] GetSubs() {
return m_env.LoadedSubs;
}
public void DeleteVariable(string name) {
m_env.ConsoleNamespace.Remove(name);
}
public bool LoadSub(string name) {
return m_env.LoadSub(name);
}
public void UnloadSub(string name) {
m_env.UnloadSub(name);
}
public bool NotRestored {
get {
return m_env.NotRestored;
}
}
}
}
18. Êëàññ SourceBox.
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
namespace interpr {
public class SourceBox : UserControl {
private RichTextBox m_tb;
private TextBox m_tb_2;
....................................................................
private int m_curline = 0;//òåêóùàÿ ñòðîêà
private int m_lincount = 0;//îáùåå ÷èñëî ñòðîê
private HighlightParser m_hp = new HighlightParser();
private static Font s_nfont =
new Font("Lucida Console", 10, FontStyle.Regular);
private static Font s_cfont =
new Font("Lucida Console", 12, FontStyle.Bold);
private int GetCurrentLine() {
return m_tb.GetLineFromCharIndex(m_tb.SelectionStart);
}
private int GetLinesCount() {
return m_tb.Lines.Length;
}
private String GetLine(int index) {
return m_tb.Lines[index];
}
private void m_tb_KeyPress(object sender, KeyPressEventArgs e) {
if (e.KeyChar == '\r') {
string txt = m_tb.Text;
int i = m_tb.SelectionStart - 2;
int j;
while (i >= 0) {
if (txt[i] == '\n')
return;
else if (txt[i] == '\t') {
j = 0;
while ((i >= 0) && (txt[i] == '\t')) {
j++;
i--;
}
if ((i < 0) || (txt[i] == '\n')) {
m_tb.SelectedText = new String('\t', j);
return;
}
}
i--;
}
}
}
private bool GetLinePos(int index, out int beg, out int len) {
if ((index < 0) || (index >= GetLinesCount())) {
beg = len = 0;
return false;
}
int i;
string[] ls = m_tb.Lines;
beg = 0;
for (i = 0; i < index; i++)
beg += ls[i].Length + 1;
len = ls[index].Length;
return true;
}
private void SelectLine(int index) {
int beg, len;
if (!GetLinePos(index, out beg, out len))
throw new IndexOutOfRangeException();
m_tb.SelectionStart = beg;
m_tb.SelectionLength = len;
}
private void HighlightLine(int index) {
int beg, len;
int curbeg = m_tb.SelectionStart;
int curlen = m_tb.SelectionLength;
GetLinePos(index, out beg, out len);
string str = m_tb.Lines[index];
m_hp.Reset(str);
while (m_hp.HasMore()) {
int tbeg, tlen;
HighlightParser.TokenType type;
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