static List <CompletionItem> DoStatement(Statement s)
{
List <CompletionItem> ret = new List <CompletionItem>();
if (s is AssignmentStatement && !(s is AugmentedAssignmentStatement))
{
AssignmentStatement a = s as AssignmentStatement;
foreach (Expression e in a.Lhs)
{
ret.AddRange(DoExpr(e));
}
foreach (Expression e in a.Rhs)
{
ret.AddRange(DoExpr(e));
}
}
else if (s is AugmentedAssignmentStatement)
{
AugmentedAssignmentStatement a = s as AugmentedAssignmentStatement;
foreach (Expression e in a.Lhs)
{
ret.AddRange(DoExpr(e));
}
foreach (Expression e in a.Rhs)
{
ret.AddRange(DoExpr(e));
}
}
else if (s is BreakStatement)
{
}
else if (s is CallStatement)
{
// Also incredibly simple...
CallStatement c = s as CallStatement;
return(DoExpr(c.Expression));
}
else if (s is DoStatement)
{
DoStatement d = s as DoStatement;
return(DoChunk(d.Body));
}
else if (s is GenericForStatement)
{
GenericForStatement g = s as GenericForStatement;
foreach (Variable v in g.VariableList)
{
ret.Add(new CompletionItem(v.Name));
}
ret.AddRange(DoChunk(g.Body));
}
else if (s is NumericForStatement)
{
NumericForStatement n = s as NumericForStatement;
ret.Add(new CompletionItem(n.Variable.Name));
ret.AddRange(DoChunk(n.Body));
}
else if (s is FunctionStatement)
{
FunctionStatement f = s as FunctionStatement;
ret.AddRange(DoExpr(f.Name));
foreach (Variable v in f.Arguments)
{
ret.Add(new CompletionItem(v.Name));
}
ret.AddRange(DoChunk(f.Body));
}
else if (s is GotoStatement)
{
}
else if (s is IfStmt)
{
IfStmt i = s as IfStmt;
for (int x = 0; x < i.Clauses.Count; x++)
{
ret.AddRange(DoStatement(i.Clauses[x]));
}
}
else if (s is LabelStatement)
{
}
else if (s is RepeatStatement)
{
RepeatStatement r = s as RepeatStatement;
ret.AddRange(DoChunk(r.Body));
ret.AddRange(DoExpr(r.Condition));
}
else if (s is ReturnStatement)
{
// no variable defined here. hopefully.
}
else if (s is UsingStatement)
{
UsingStatement u = s as UsingStatement;
ret.AddRange(DoStatement(u.Vars));
ret.AddRange(DoChunk(u.Body));
}
else if (s is WhileStatement)
{
WhileStatement w = s as WhileStatement;
ret.AddRange(DoExpr(w.Condition));
ret.AddRange(DoChunk(w.Body));
}
else if (s is ElseIfStmt)
{
ElseIfStmt e = s as ElseIfStmt;
return(DoChunk(e.Body));
}
else if (s is ElseStmt)
{
return(DoChunk(((ElseStmt)s).Body));
}
return(ret);
}
internal string DoStatement(Statement s)
{
if (s is AssignmentStatement && !(s is AugmentedAssignmentStatement))
{
AssignmentStatement a = s as AssignmentStatement;
StringBuilder sb = new StringBuilder();
if (a.IsLocal)
{
sb.Append("local ");
}
for (int i = 0; i < a.Lhs.Count; i++)
{
sb.Append(DoExpr(a.Lhs[i]));
if (i != a.Lhs.Count - 1)
{
sb.Append(",");
}
}
if (a.Rhs.Count > 0)
{
sb.Append("=");
for (int i = 0; i < a.Rhs.Count; i++)
{
sb.Append(DoExpr(a.Rhs[i]));
if (i != a.Rhs.Count - 1)
{
sb.Append(",");
}
}
}
return(sb.ToString());
}
else if (s is AugmentedAssignmentStatement)
{
AugmentedAssignmentStatement a = s as AugmentedAssignmentStatement;
StringBuilder sb = new StringBuilder();
//sb.Append(DoExpr(a.Lhs[0]));
if (a.IsLocal)
{
sb.Append("local ");
}
Expression assignment = ((BinOpExpr)a.Rhs[0]).Rhs;
sb.Append(DoExpr((((BinOpExpr)a.Rhs[0]).Lhs)));
sb.Append("" + ((BinOpExpr)a.Rhs[0]).Op + "=");
sb.Append(DoExpr(assignment));
return(sb.ToString());
}
else if (s is BreakStatement)
{
// HAHAHA this is incredibly simple...
return("break");
}
else if (s is CallStatement)
{
// Also incredibly simple...
CallStatement c = s as CallStatement;
return(DoExpr(c.Expression));
}
else if (s is DoStatement)
{
DoStatement d = s as DoStatement;
StringBuilder sb = new StringBuilder();
sb.Append("do ");
sb.Append(DoChunk(d.Body));
sb.Append(" end");
return(sb.ToString());
}
else if (s is GenericForStatement)
{
GenericForStatement g = s as GenericForStatement;
StringBuilder sb = new StringBuilder();
sb.Append("for ");
for (int i = 0; i < g.VariableList.Count; i++)
{
sb.Append(g.VariableList[i].Name);
if (i != g.VariableList.Count - 1)
{
sb.Append(",");
}
}
sb.Append(" in ");
for (int i = 0; i < g.Generators.Count; i++)
{
sb.Append(DoExpr(g.Generators[i]));
if (i != g.Generators.Count - 1)
{
sb.Append(",");
}
}
sb.Append(" do ");
sb.Append(DoChunk(g.Body));
sb.Append(" end");
return(sb.ToString());
}
else if (s is NumericForStatement)
{
NumericForStatement n = s as NumericForStatement;
StringBuilder sb = new StringBuilder();
sb.Append("for ");
sb.Append(n.Variable.Name);
sb.Append("=");
sb.Append(DoExpr(n.Start));
sb.Append(",");
sb.Append(DoExpr(n.End));
if (n.Step != null)
{
sb.Append(",");
sb.Append(DoExpr(n.Step));
}
sb.Append(" do ");
sb.Append(DoChunk(n.Body));
sb.Append(" end");
return(sb.ToString());
}
else if (s is FunctionStatement)
{
FunctionStatement f = s as FunctionStatement;
StringBuilder sb = new StringBuilder();
sb.Append("function " + DoExpr(f.Name) + "(");
for (int i = 0; i < f.Arguments.Count; i++)
{
sb.Append(f.Arguments[i].Name);
if (i != f.Arguments.Count - 1 || f.IsVararg)
{
sb.Append(",");
}
}
if (f.IsVararg)
{
sb.Append("...");
}
sb.Append(")");
sb.Append(" " + DoStatement(f.Body[0]));
sb.Append(" end");
return(sb.ToString());
}
else if (s is GotoStatement)
{
GotoStatement g = s as GotoStatement;
return("goto " + g.Label);
}
else if (s is IfStmt)
{
IfStmt i = s as IfStmt;
StringBuilder sb = new StringBuilder();
for (int x = 0; x < i.Clauses.Count; x++)
{
string ss = DoStatement(i.Clauses[x]);
if (x == 0)
{
sb.Append("if ");
sb.Append(ss);
}
else if (i.Clauses[x] is ElseStmt)
{
sb.Append(" else ");
sb.Append(ss);
}
else
{
sb.Append("elseif " + ss);
}
}
sb.Append(" end");
return(sb.ToString());
}
else if (s is LabelStatement)
{
LabelStatement l = s as LabelStatement;
return("::" + l.Label + "::");
}
else if (s is RepeatStatement)
{
RepeatStatement r = s as RepeatStatement;
StringBuilder sb = new StringBuilder();
sb.Append("repeat ");
sb.Append(DoChunk(r.Body));
sb.Append(" until " + DoExpr(r.Condition));
return(sb.ToString());
}
else if (s is ReturnStatement)
{
ReturnStatement r = s as ReturnStatement;
StringBuilder sb = new StringBuilder();
sb.Append("return ");
for (int i = 0; i < r.Arguments.Count; i++)
{
sb.Append(DoExpr(r.Arguments[i]));
if (i != r.Arguments.Count - 1)
{
sb.Append(",");
}
}
return(sb.ToString());
}
else if (s is UsingStatement)
{
UsingStatement u = s as UsingStatement;
StringBuilder sb = new StringBuilder();
sb.Append("using ");
sb.Append(DoStatement(u.Vars));
sb.Append(" do ");
sb.Append(DoChunk(u.Body));
sb.Append(" end");
return(sb.ToString());
}
else if (s is WhileStatement)
{
WhileStatement w = s as WhileStatement;
StringBuilder sb = new StringBuilder();
sb.Append("while ");
sb.Append(DoExpr(w.Condition));
sb.Append(" do ");
sb.Append(DoChunk(w.Body));
sb.Append(" end");
return(sb.ToString());
}
else if (s is ElseIfStmt)
{
ElseIfStmt e = s as ElseIfStmt;
string s2 = DoExpr(e.Condition) + " then ";
s2 += DoChunk(e.Body);
return(s2);
}
else if (s is ElseStmt)
{
return(DoChunk(((ElseStmt)s).Body));
}
throw new NotImplementedException(s.GetType().Name + " is not implemented");
}
internal string DoStatement(Statement s, ref int i)
{
// If the statement contains a body, we cant just fromTokens it, as it's body might not be
// fully tokenized input. Therefore, we run DoChunk on Body's
if (s.ScannedTokens != null && s.ScannedTokens.Count > 0)
{
if (s is AssignmentStatement && !(s is AugmentedAssignmentStatement))
{
AssignmentStatement a = s as AssignmentStatement;
StringBuilder sb = new StringBuilder();
if (a.IsLocal)
{
sb.Append(fromToken(a.ScannedTokens[i++], a.Scope));
sb.Append(" ");
}
for (int i2 = 0; i2 < a.Lhs.Count; i2++)
{
sb.Append(DoExpr(a.Lhs[i2], s.ScannedTokens, ref i, s.Scope));
if (i2 != a.Lhs.Count - 1)
{
sb.Append(fromToken(a.ScannedTokens[i++], a.Scope));
sb.Append(" ");
}
}
if (a.Rhs.Count > 0)
{
sb.Append(" ");
sb.Append(fromToken(a.ScannedTokens[i++], a.Scope));
sb.Append(" ");
for (int i2 = 0; i2 < a.Rhs.Count; i2++)
{
sb.Append(DoExpr(a.Rhs[i2], s.ScannedTokens, ref i, s.Scope));
if (i2 != a.Rhs.Count - 1)
{
sb.Append(fromToken(a.ScannedTokens[i++], s.Scope));
sb.Append(" ");
}
}
}
return(sb.ToString());
}
else if (s is AugmentedAssignmentStatement)
{
AugmentedAssignmentStatement a = s as AugmentedAssignmentStatement;
StringBuilder sb = new StringBuilder();
//sb.Append(DoExpr(a.Lhs[0]));
if (a.IsLocal)
{
sb.Append(fromToken(a.ScannedTokens[i++], a.Scope));
sb.Append(" ");
}
Expression assignment = ((BinOpExpr)a.Rhs[0]).Rhs;
Expression tmp = ((BinOpExpr)a.Rhs[0]).Lhs;
sb.Append(DoExpr(tmp, s.ScannedTokens, ref i, s.Scope));
sb.Append(" ");
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope));
sb.Append(" ");
sb.Append(DoExpr(assignment, s.ScannedTokens, ref i, s.Scope));
return(sb.ToString());
}
else if (s is BreakStatement)
{
// HAHAHA this is incredibly simple...
return(fromTokens(s.ScannedTokens, s.Scope));
}
else if (s is ContinueStatement)
{
return(fromTokens(s.ScannedTokens, s.Scope));
}
else if (s is CallStatement)
{
// Also incredibly simple...
return(DoExpr(((CallStatement)s).Expression, s.ScannedTokens, ref i, s.Scope));
}
else if (s is DoStatement)
{
DoStatement d = s as DoStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(d.ScannedTokens[0], s.Scope)); // 'do'
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(d.Body, ref i));
sb.Append(nldedent());
sb.Append(fromToken(d.ScannedTokens[d.ScannedTokens.Count - 1], s.Scope)); // end
return(sb.ToString());
}
else if (s is GenericForStatement)
{
GenericForStatement g = s as GenericForStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(g.ScannedTokens[i++], s.Scope)); // 'for'
sb.Append(" ");
for (int x = 0; x < g.VariableList.Count; x++)
{
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope));
if (x != g.VariableList.Count - 1)
{
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // ','
sb.Append(" ");
}
}
sb.Append(" ");
sb.Append(fromToken(g.ScannedTokens[i++], s.Scope)); // 'in'
sb.Append(" ");
for (int x = 0; x < g.Generators.Count; x++)
{
//sb.Append(fromToken(s.ScannedTokens[i++], s.Scope));
DoExpr(g.Generators[x], g.ScannedTokens, ref i, s.Scope);
if (x != g.VariableList.Count - 1)
{
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // ','
sb.Append(" ");
}
}
sb.Append(" ");
sb.Append(fromToken(g.ScannedTokens[i++], s.Scope)); // 'do'
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(g.Body));
sb.Append(nldedent());
sb.Append(fromToken(s.ScannedTokens[s.ScannedTokens.Count - 1], s.Scope)); // <end>
return(sb.ToString());
}
else if (s is NumericForStatement)
{
NumericForStatement n = s as NumericForStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(n.ScannedTokens[i++], s.Scope)); // 'for'
sb.Append(" ");
sb.Append(fromToken(n.ScannedTokens[i++], s.Scope)); // <var>
sb.Append(" ");
sb.Append(fromToken(n.ScannedTokens[i++], s.Scope)); // '='
sb.Append(" ");
sb.Append(DoExpr(n.Start, n.ScannedTokens, ref i, s.Scope)); // <start>
//sb.Append(" ");
sb.Append(fromToken(n.ScannedTokens[i++], s.Scope)); // ','
sb.Append(" ");
sb.Append(DoExpr(n.End, n.ScannedTokens, ref i, s.Scope)); // <end>
if (n.Step != null)
{
sb.Append(fromToken(n.ScannedTokens[i++], s.Scope)); // ','
sb.Append(" ");
sb.Append(DoExpr(n.Step, n.ScannedTokens, ref i, s.Scope)); // <step>
sb.Append(" ");
}
else
{
sb.Append(" ");
}
sb.Append(fromToken(n.ScannedTokens[i++], s.Scope)); // 'do'
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(n.Body));
sb.Append(nldedent());
sb.Append(fromToken(s.ScannedTokens[s.ScannedTokens.Count - 1], s.Scope)); // <end>
return(sb.ToString());
}
else if (s is FunctionStatement)
{
FunctionStatement f = s as FunctionStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // 'function'
sb.Append(" ");
sb.Append(DoExpr(f.Name, s.ScannedTokens, ref i, s.Scope));
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // '('
for (int i2 = 0; i2 < f.Arguments.Count; i2++)
{
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope));
if (i2 != f.Arguments.Count - 1)// || f.IsVararg)
{
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope));
sb.Append(" ");
}
}
if (f.IsVararg)
{
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope));
sb.Append(" ");
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope));
}
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // ')'
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(f.Body));
indent--;
sb.Append(options.EOL);
sb.Append(writeIndent());
sb.Append(fromToken(s.ScannedTokens[s.ScannedTokens.Count - 1], s.Scope)); // <end>
sb.Append(options.EOL);
return(sb.ToString());
}
else if (s is GotoStatement)
{
// goto <string label>, so no expr
//GotoStatement g = s as GotoStatement;
return(fromTokens(s.ScannedTokens, s.Scope));
}
else if (s is IfStmt)
{
IfStmt ifs = s as IfStmt;
StringBuilder sb = new StringBuilder();
foreach (SubIfStmt clause in ifs.Clauses)
{
int i3 = 0;
if (clause is ElseIfStmt)
{
ElseIfStmt c = clause as ElseIfStmt;
sb.Append(fromToken(c.ScannedTokens[i3++], s.Scope)); // if/elseif
sb.Append(" ");
sb.Append(DoExpr(c.Condition, c.ScannedTokens, ref i3, c.Scope));
sb.Append(" ");
sb.Append(fromToken(c.ScannedTokens[i3++], s.Scope)); // 'then'
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(clause.Body));
sb.Append(nldedent());
}
else if (clause is ElseStmt)
{
sb.Append(fromToken(clause.ScannedTokens[i3++], s.Scope)); // if/elseif
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(clause.Body));
sb.Append(nldedent());
}
else
{
throw new NotImplementedException(clause.GetType().Name);
}
}
sb.Append(fromToken(s.ScannedTokens[s.ScannedTokens.Count - 1], s.Scope)); // 'end'
return(sb.ToString());
}
else if (s is LabelStatement)
{
// ::<string label>::, so no expr
return(fromTokens(s.ScannedTokens, s.Scope));
}
else if (s is RepeatStatement)
{
RepeatStatement r = s as RepeatStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(r.ScannedTokens[0], s.Scope));
i = 1;
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(r.Body, ref i));
sb.Append(nldedent());
sb.Append(fromToken(r.ScannedTokens[i++], r.Scope));
sb.Append(" ");
sb.Append(DoExpr(r.Condition, r.ScannedTokens, ref i, r.Scope));
return(sb.ToString());
}
else if (s is ReturnStatement)
{
ReturnStatement rs = s as ReturnStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // 'return'
sb.Append(" ");
for (int x = 0; x < rs.Arguments.Count; x++)
{
sb.Append(DoExpr(rs.Arguments[x], rs.ScannedTokens, ref i, s.Scope));
if (x != rs.Arguments.Count - 1)
{
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // ','
sb.Append(" ");
}
}
return(sb.ToString());
}
else if (s is UsingStatement)
{
UsingStatement u = s as UsingStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // 'using'
sb.Append(" ");
AssignmentStatement a = u.Vars;
for (int i2 = 0; i2 < a.Lhs.Count; i2++)
{
sb.Append(DoExpr(a.Lhs[i2], u.ScannedTokens, ref i, s.Scope));
if (i2 != a.Lhs.Count - 1)
{
sb.Append(fromToken(u.ScannedTokens[i++], a.Scope));
sb.Append(" ");
}
}
if (a.Rhs.Count > 0)
{
sb.Append(" ");
sb.Append(fromToken(u.ScannedTokens[i++], a.Scope)); // '='
sb.Append(" ");
for (int i2 = 0; i2 < a.Rhs.Count; i2++)
{
sb.Append(DoExpr(a.Rhs[i2], u.ScannedTokens, ref i, s.Scope));
if (i2 != a.Rhs.Count - 1)
{
sb.Append(fromToken(u.ScannedTokens[i++], s.Scope));
sb.Append(" ");
}
}
}
sb.Append(" ");
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // 'do'
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(u.Body));
sb.Append(nldedent());
sb.Append(fromToken(s.ScannedTokens[s.ScannedTokens.Count - 1], s.Scope)); // 'end'
return(sb.ToString());
}
else if (s is WhileStatement)
{
WhileStatement w = s as WhileStatement;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // 'while'
sb.Append(" ");
sb.Append(DoExpr(w.Condition, w.ScannedTokens, ref i, s.Scope));
sb.Append(" ");
sb.Append(fromToken(s.ScannedTokens[i++], s.Scope)); // 'do'
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(w.Body));
sb.Append(nldedent());
sb.Append(fromToken(s.ScannedTokens[s.ScannedTokens.Count - 1], s.Scope));
return(sb.ToString());
}
}
else // No token stream, beautify
{
return(beautifier.DoStatement(s));
}
throw new NotImplementedException(s.GetType().Name + " is not implemented");
}
Statement ParseStatement(Scope scope)
{
int startP = reader.p;
int startLine = reader.Peek().Line;
Statement stat = null;
// print(tok.Peek().Print())
if (reader.ConsumeKeyword("if"))
{
//setup
IfStmt _if = new IfStmt();
//clauses
do
{
int sP = reader.p;
Expression nodeCond = ParseExpr(scope);
if (!reader.ConsumeKeyword("then"))
{
error("'then' expected");
}
List <Statement> nodeBody = ParseStatementList(scope);
List <Token> range = new List <Token>();
range.Add(reader.tokens[sP - 1]);
range.AddRange(reader.Range(sP, reader.p));
_if.Clauses.Add(new ElseIfStmt(scope)
{
Condition = nodeCond,
Body = nodeBody,
ScannedTokens = range
});
}while (reader.ConsumeKeyword("elseif"));
// else clause
if (reader.ConsumeKeyword("else"))
{
int sP = reader.p;
List <Statement> nodeBody = ParseStatementList(scope);
List <Token> range = new List <Token>();
range.Add(reader.tokens[sP - 1]);
range.AddRange(reader.Range(sP, reader.p));
_if.Clauses.Add(new ElseStmt(scope)
{
Body = nodeBody,
ScannedTokens = range
});
}
// end
if (!reader.ConsumeKeyword("end"))
{
error("'end' expected");
}
stat = _if;
}
else if (reader.ConsumeKeyword("while"))
{
WhileStatement w = new WhileStatement(scope);
// condition
Expression nodeCond = ParseExpr(scope);
// do
if (!reader.ConsumeKeyword("do"))
{
error("'do' expected");
}
// body
List <Statement> body = ParseStatementList(scope);
//end
if (!reader.ConsumeKeyword("end"))
{
error("'end' expected");
}
// return
w.Condition = nodeCond;
w.Body = body;
stat = w;
}
else if (reader.ConsumeKeyword("do"))
{
// do block
List <Statement> b = ParseStatementList(scope);
if (!reader.ConsumeKeyword("end"))
{
error("'end' expected");
}
stat = new DoStatement(scope)
{
Body = b
};
}
else if (reader.ConsumeKeyword("for"))
{
//for block
if (!reader.Is(TokenType.Ident))
{
error("<ident> expected");
}
Token baseVarName = reader.Get();
if (reader.ConsumeSymbol('='))
{
//numeric for
NumericForStatement forL = new NumericForStatement(scope);
Variable forVar = new Variable()
{
Name = baseVarName.Data
};
forL.Scope.AddLocal(forVar);
Expression startEx = ParseExpr(scope);
if (!reader.ConsumeSymbol(','))
{
error("',' expected");
}
Expression endEx = ParseExpr(scope);
Expression stepEx = null;
if (reader.ConsumeSymbol(','))
{
stepEx = ParseExpr(scope);
}
if (!reader.ConsumeKeyword("do"))
{
error("'do' expected");
}
List <Statement> body = ParseStatementList(forL.Scope);
if (!reader.ConsumeKeyword("end"))
{
error("'end' expected");
}
forL.Variable = forVar;
forL.Start = startEx;
forL.End = endEx;
forL.Step = stepEx;
forL.Body = body;
stat = forL;
}
else
{
// generic for
GenericForStatement forL = new GenericForStatement(scope);
List <Variable> varList = new List <Variable> {
forL.Scope.CreateLocal(baseVarName.Data)
};
while (reader.ConsumeSymbol(','))
{
if (!reader.Is(TokenType.Ident))
{
error("for variable expected");
}
varList.Add(forL.Scope.CreateLocal(reader.Get().Data));
}
if (!reader.ConsumeKeyword("in"))
{
error("'in' expected");
}
List <Expression> generators = new List <Expression>();
Expression first = ParseExpr(scope);
generators.Add(first);
while (reader.ConsumeSymbol(','))
{
Expression gen = ParseExpr(scope);
generators.Add(gen);
}
if (!reader.ConsumeKeyword("do"))
{
error("'do' expected");
}
List <Statement> body = ParseStatementList(forL.Scope);
if (!reader.ConsumeKeyword("end"))
{
error("'end' expected");
}
forL.VariableList = varList;
forL.Generators = generators;
forL.Body = body;
stat = forL;
}
}
else if (reader.ConsumeKeyword("repeat"))
{
List <Statement> body = ParseStatementList(scope);
if (!reader.ConsumeKeyword("until"))
{
error("'until' expected");
}
Expression cond = ParseExpr(scope);
RepeatStatement r = new RepeatStatement(scope);
r.Condition = cond;
r.Body = body;
stat = r;
}
else if (reader.ConsumeKeyword("function"))
{
if (!reader.Is(TokenType.Ident))
{
error("function name expected");
}
Expression name = ParseSuffixedExpr(scope, true);
// true: only dots and colons
FunctionStatement func = ParseFunctionArgsAndBody(scope);
func.IsLocal = false;
func.Name = name;
stat = func;
}
else if (reader.ConsumeKeyword("local"))
{
if (reader.Is(TokenType.Ident))
{
List <string> varList = new List <string> {
reader.Get().Data
};
while (reader.ConsumeSymbol(','))
{
if (!reader.Is(TokenType.Ident))
{
error("local variable name expected");
}
varList.Add(reader.Get().Data);
}
List <Expression> initList = new List <Expression>();
if (reader.ConsumeSymbol('='))
{
do
{
Expression ex = ParseExpr(scope);
initList.Add(ex);
} while (reader.ConsumeSymbol(','));
}
//now patch var list
//we can't do this before getting the init list, because the init list does not
//have the locals themselves in scope.
List <Expression> newVarList = new List <Expression>();
for (int i = 0; i < varList.Count; i++)
{
Variable x = scope.CreateLocal(varList[i]);
newVarList.Add(new VariableExpression {
Var = x
});
}
AssignmentStatement l = new AssignmentStatement();
l.Lhs = newVarList;
l.Rhs = initList;
l.IsLocal = true;
stat = l;
}
else if (reader.ConsumeKeyword("function"))
{
if (!reader.Is(TokenType.Ident))
{
error("Function name expected");
}
string name = reader.Get().Data;
Variable localVar = scope.CreateLocal(name);
FunctionStatement func = ParseFunctionArgsAndBody(scope);
func.Name = new VariableExpression {
Var = localVar
};
func.IsLocal = true;
stat = func;
}
else
{
error("local variable or function definition expected");
}
}
#if !VANILLA_LUA
else if (reader.ConsumeSymbol("::"))
{
if (!reader.Is(TokenType.Ident))
{
error("label name expected");
}
string label = reader.Get().Data;
if (!reader.ConsumeSymbol("::"))
{
error("'::' expected");
}
LabelStatement l = new LabelStatement();
l.Label = label;
stat = l;
}
#endif
else if (reader.ConsumeKeyword("return"))
{
List <Expression> exprList = new List <Expression>();
if (!reader.IsKeyword("end") && !reader.IsEof())
{
Expression firstEx = ParseExpr(scope);
exprList.Add(firstEx);
while (reader.ConsumeSymbol(','))
{
Expression ex = ParseExpr(scope);
exprList.Add(ex);
}
}
ReturnStatement r = new ReturnStatement();
r.Arguments = exprList;
stat = r;
}
else if (reader.ConsumeKeyword("break"))
{
stat = new BreakStatement();
}
else if (reader.ConsumeKeyword("continue"))
{
stat = new ContinueStatement();
}
#if !VANILLA_LUA
else if (reader.ConsumeKeyword("goto"))
{
if (!reader.Is(TokenType.Ident))
{
error("label expected");
}
string label = reader.Get().Data;
GotoStatement g = new GotoStatement();
g.Label = label;
stat = g;
}
else if (reader.ConsumeKeyword("using"))
{
// using <a, b = 1, x()> do <statements> end
UsingStatement us = new UsingStatement(scope);
us.Scope = new Scope(scope);
List <Expression> lhs = new List <Expression> {
ParseExpr(us.Scope)
};
while (reader.ConsumeSymbol(','))
{
lhs.Add(ParseSuffixedExpr(us.Scope, true));
}
// equals
if (!reader.ConsumeSymbol('='))
{
error("'=' expected");
}
//rhs
List <Expression> rhs = new List <Expression>();
rhs.Add(ParseExpr(us.Scope));
while (reader.ConsumeSymbol(','))
{
rhs.Add(ParseExpr(scope));
}
AssignmentStatement a = new AssignmentStatement();
a.Lhs = lhs;
a.Rhs = rhs;
a.IsLocal = true;
if (!reader.ConsumeKeyword("do"))
{
error("'do' expected");
}
List <Statement> block = ParseStatementList(us.Scope);
if (!reader.ConsumeKeyword("end"))
{
error("'end' expected");
}
us.Vars = a;
us.Body = block;
stat = us;
}
#endif
else
{
// statementParseExpr
Expression suffixed = ParseSuffixedExpr(scope);
// assignment or call?
if (reader.IsSymbol(',') || reader.IsSymbol('='))
{
// check that it was not parenthesized, making it not an lvalue
if (suffixed.ParenCount > 0)
{
error("Can not assign to parenthesized expression, it is not an lvalue");
}
// more processing needed
List <Expression> lhs = new List <Expression> {
suffixed
};
while (reader.ConsumeSymbol(','))
{
lhs.Add(ParseSuffixedExpr(scope));
}
// equals
if (!reader.ConsumeSymbol('='))
{
error("'=' expected");
}
//rhs
List <Expression> rhs = new List <Expression>();
rhs.Add(ParseExpr(scope));
while (reader.ConsumeSymbol(','))
{
rhs.Add(ParseExpr(scope));
}
AssignmentStatement a = new AssignmentStatement();
a.Lhs = lhs;
a.Rhs = rhs;
stat = a;
}
#if !VANILLA_LUA
else if (isAugmentedAssignment(reader.Peek()))
{
AugmentedAssignmentStatement aas = new AugmentedAssignmentStatement();
Expression left = suffixed;
Expression right = null;
string augmentedOp = reader.Get().Data;
right = ParseExpr(scope);
BinOpExpr nRight = new BinOpExpr();
nRight.Lhs = left;
nRight.Op = augmentedOp.Substring(0, augmentedOp.Length - 1); // strip the '='
nRight.Rhs = right;
aas.Lhs = new List <Expression> {
left
};
aas.Rhs = new List <Expression> {
nRight
};
stat = aas;
}
#endif
else if (suffixed is CallExpr ||
suffixed is TableCallExpr ||
suffixed is StringCallExpr)
{
//it's a call statement
CallStatement c = new CallStatement();
c.Expression = suffixed;
stat = c;
}
else
{
error("assignment statement expected");
}
}
stat.ScannedTokens = reader.Range(startP, reader.p);
if (reader.Peek().Data == ";" && reader.Peek().Type == TokenType.Symbol)
{
stat.HasSemicolon = true;
stat.SemicolonToken = reader.Get();
}
if (stat.Scope == null)
{
stat.Scope = scope;
}
stat.LineNumber = startLine;
return(stat);
}
void DoStatement(Statement s)
{
line = s.LineNumber;
if (s is AssignmentStatement && !(s is AugmentedAssignmentStatement))
{
AssignmentStatement a = s as AssignmentStatement;
if (a.IsLocal == false)
{
for (int i = a.Rhs.Count; i > 0; i--)
{
DoExpr(a.Rhs[i - 1], false, a.Lhs.Count);
}
for (int i = a.Lhs.Count; i > 0; i--)
{
DoExpr(a.Lhs[i - 1], true);
}
return;
}
else
{
for (int i = a.Rhs.Count; i > 0; i--)
{
DoExpr(a.Rhs[i - 1], false, a.Lhs.Count);
}
for (int i = a.Lhs.Count; i > 0; i--)
{
DoExpr(a.Lhs[i - 1], true);
}
return;
}
}
else if (s is AugmentedAssignmentStatement)
{
AugmentedAssignmentStatement aas = s as AugmentedAssignmentStatement;
StringBuilder sb = new StringBuilder();
//sb.Append(DoExpr(a.Lhs[0]));
if (aas.IsLocal)
{
throw new LuaSourceException(s.LineNumber, 0, "Local assignment cannot have augmented operators");
}
DoExpr(aas.Rhs[0], true, 1);
DoExpr(aas.Lhs[0], true, 1);
return;
}
else if (s is BreakStatement)
{
bool hadLoop = false;
while (block != null)
{
if (block.IsLoop)
{
hadLoop = true;
break;
}
block = block.PreviousBlock;
}
if (!hadLoop)
{
throw new LuaSourceException(s.LineNumber, 0, "No loop to break");
}
Instruction i = new Instruction("JMP");
i.A = 0;
i.sBx = -1; // Infinite loop ;)
emit(i);
patchSbx.Push(i);
return;
}
else if (s is ContinueStatement)
{
}
else if (s is CallStatement)
{
CallStatement cs = s as CallStatement;
DoExpr(cs.Expression);
return;
}
else if (s is DoStatement)
{
}
else if (s is GenericForStatement)
{
}
else if (s is NumericForStatement)
{
}
else if (s is FunctionStatement)
{
}
else if (s is GotoStatement)
{
;
}
else if (s is IfStmt)
{
}
else if (s is LabelStatement)
{
;
}
else if (s is RepeatStatement)
{
}
else if (s is ReturnStatement)
{
}
else if (s is UsingStatement)
{
}
else if (s is WhileStatement)
{
WhileStatement ws = s as WhileStatement;
int start = block.Chunk.Instructions.Count;
DoExpr(ws.Condition);
Instruction t = new Instruction("TEST");
t.A = block.regnum;
t.C = 0;
emit(t);
DoChunk(ws.Body, true);
Instruction i = new Instruction("JMP");
i.A = 0;
i.sBx = -(block.Chunk.Instructions.Count - start) - 1;
emit(i);
while (patchSbx.Count > 0)
{
patchSbx.Pop().sBx = Math.Abs(block.Chunk.Instructions.Count + i.sBx - 1);
}
//return;
}
throw new NotImplementedException(s.GetType().Name + " is not implemented");
}
Statement ParseStatement(Scope scope)
{
int startP = reader.p;
int startLine = reader.Peek().Line;
Statement stat = null;
// print(tok.Peek().Print())
if (reader.ConsumeKeyword("if"))
{
//setup
IfStmt _if = new IfStmt();
//clauses
do
{
int sP = reader.p;
Expression nodeCond = ParseExpr(scope);
if (!reader.ConsumeKeyword("then"))
error("'then' expected");
List<Statement> nodeBody = ParseStatementList(scope);
List<Token> range = new List<Token>();
range.Add(reader.tokens[sP - 1]);
range.AddRange(reader.Range(sP, reader.p));
_if.Clauses.Add(new ElseIfStmt(scope)
{
Condition = nodeCond,
Body = nodeBody,
ScannedTokens = range
});
}
while (reader.ConsumeKeyword("elseif"));
// else clause
if (reader.ConsumeKeyword("else"))
{
int sP = reader.p;
List<Statement> nodeBody = ParseStatementList(scope);
List<Token> range = new List<Token>();
range.Add(reader.tokens[sP - 1]);
range.AddRange(reader.Range(sP, reader.p));
_if.Clauses.Add(new ElseStmt(scope)
{
Body = nodeBody,
ScannedTokens = range
});
}
// end
if (!reader.ConsumeKeyword("end"))
error("'end' expected");
stat = _if;
}
else if (reader.ConsumeKeyword("while"))
{
WhileStatement w = new WhileStatement(scope);
// condition
Expression nodeCond = ParseExpr(scope);
// do
if (!reader.ConsumeKeyword("do"))
error("'do' expected");
// body
List<Statement> body = ParseStatementList(scope);
//end
if (!reader.ConsumeKeyword("end"))
error("'end' expected");
// return
w.Condition = nodeCond;
w.Body = body;
stat = w;
}
else if (reader.ConsumeKeyword("do"))
{
// do block
List<Statement> b = ParseStatementList(scope);
if (!reader.ConsumeKeyword("end"))
error("'end' expected");
stat = new DoStatement(scope) { Body = b };
}
else if (reader.ConsumeKeyword("for"))
{
//for block
if (!reader.Is(TokenType.Ident))
error("<ident> expected");
Token baseVarName = reader.Get();
if (reader.ConsumeSymbol('='))
{
//numeric for
NumericForStatement forL = new NumericForStatement(scope);
Variable forVar = new Variable() { Name = baseVarName.Data };
forL.Scope.AddLocal(forVar);
Expression startEx = ParseExpr(scope);
if (!reader.ConsumeSymbol(','))
error("',' expected");
Expression endEx = ParseExpr(scope);
Expression stepEx = null;
if (reader.ConsumeSymbol(','))
{
stepEx = ParseExpr(scope);
}
if (!reader.ConsumeKeyword("do"))
error("'do' expected");
List<Statement> body = ParseStatementList(forL.Scope);
if (!reader.ConsumeKeyword("end"))
error("'end' expected");
forL.Variable = forVar;
forL.Start = startEx;
forL.End = endEx;
forL.Step = stepEx;
forL.Body = body;
stat = forL;
}
else
{
// generic for
GenericForStatement forL = new GenericForStatement(scope);
List<Variable> varList = new List<Variable> { forL.Scope.CreateLocal(baseVarName.Data) };
while (reader.ConsumeSymbol(','))
{
if (!reader.Is(TokenType.Ident))
error("for variable expected");
varList.Add(forL.Scope.CreateLocal(reader.Get().Data));
}
if (!reader.ConsumeKeyword("in"))
error("'in' expected");
List<Expression> generators = new List<Expression>();
Expression first = ParseExpr(scope);
generators.Add(first);
while (reader.ConsumeSymbol(','))
{
Expression gen = ParseExpr(scope);
generators.Add(gen);
}
if (!reader.ConsumeKeyword("do"))
error("'do' expected");
List<Statement> body = ParseStatementList(forL.Scope);
if (!reader.ConsumeKeyword("end"))
error("'end' expected");
forL.VariableList = varList;
forL.Generators = generators;
forL.Body = body;
stat = forL;
}
}
else if (reader.ConsumeKeyword("repeat"))
{
List<Statement> body = ParseStatementList(scope);
if (!reader.ConsumeKeyword("until"))
error("'until' expected");
Expression cond = ParseExpr(scope);
RepeatStatement r = new RepeatStatement(scope);
r.Condition = cond;
r.Body = body;
stat = r;
}
else if (reader.ConsumeKeyword("function"))
{
if (!reader.Is(TokenType.Ident))
error("function name expected");
Expression name = ParseSuffixedExpr(scope, true);
// true: only dots and colons
FunctionStatement func = ParseFunctionArgsAndBody(scope);
func.IsLocal = false;
func.Name = name;
stat = func;
}
else if (reader.ConsumeKeyword("local"))
{
if (reader.Is(TokenType.Ident))
{
List<string> varList = new List<string> { reader.Get().Data };
while (reader.ConsumeSymbol(','))
{
if (!reader.Is(TokenType.Ident))
error("local variable name expected");
varList.Add(reader.Get().Data);
}
List<Expression> initList = new List<Expression>();
if (reader.ConsumeSymbol('='))
{
do
{
Expression ex = ParseExpr(scope);
initList.Add(ex);
} while (reader.ConsumeSymbol(','));
}
//now patch var list
//we can't do this before getting the init list, because the init list does not
//have the locals themselves in scope.
List<Expression> newVarList = new List<Expression>();
for (int i = 0; i < varList.Count; i++)
{
Variable x = scope.CreateLocal(varList[i]);
newVarList.Add(new VariableExpression { Var = x });
}
AssignmentStatement l = new AssignmentStatement();
l.Lhs = newVarList;
l.Rhs = initList;
l.IsLocal = true;
stat = l;
}
else if (reader.ConsumeKeyword("function"))
{
if (!reader.Is(TokenType.Ident))
error("Function name expected");
string name = reader.Get().Data;
Variable localVar = scope.CreateLocal(name);
FunctionStatement func = ParseFunctionArgsAndBody(scope);
func.Name = new VariableExpression { Var = localVar };
func.IsLocal = true;
stat = func;
}
else
error("local variable or function definition expected");
}
#if !VANILLA_LUA
else if (reader.ConsumeSymbol("::"))
{
if (!reader.Is(TokenType.Ident))
error("label name expected");
string label = reader.Get().Data;
if (!reader.ConsumeSymbol("::"))
error("'::' expected");
LabelStatement l = new LabelStatement();
l.Label = label;
stat = l;
}
#endif
else if (reader.ConsumeKeyword("return"))
{
List<Expression> exprList = new List<Expression>();
if (!reader.IsKeyword("end") && !reader.IsEof())
{
Expression firstEx = ParseExpr(scope);
exprList.Add(firstEx);
while (reader.ConsumeSymbol(','))
{
Expression ex = ParseExpr(scope);
exprList.Add(ex);
}
}
ReturnStatement r = new ReturnStatement();
r.Arguments = exprList;
stat = r;
}
else if (reader.ConsumeKeyword("break"))
{
stat = new BreakStatement();
}
else if (reader.ConsumeKeyword("continue"))
{
stat = new ContinueStatement();
}
#if !VANILLA_LUA
else if (reader.ConsumeKeyword("goto"))
{
if (!reader.Is(TokenType.Ident))
error("label expected");
string label = reader.Get().Data;
GotoStatement g = new GotoStatement();
g.Label = label;
stat = g;
}
else if (reader.ConsumeKeyword("using"))
{
// using <a, b = 1, x()> do <statements> end
UsingStatement us = new UsingStatement(scope);
us.Scope = new Scope(scope);
List<Expression> lhs = new List<Expression> { ParseExpr(us.Scope) };
while (reader.ConsumeSymbol(','))
{
lhs.Add(ParseSuffixedExpr(us.Scope, true));
}
// equals
if (!reader.ConsumeSymbol('='))
error("'=' expected");
//rhs
List<Expression> rhs = new List<Expression>();
rhs.Add(ParseExpr(us.Scope));
while (reader.ConsumeSymbol(','))
{
rhs.Add(ParseExpr(scope));
}
AssignmentStatement a = new AssignmentStatement();
a.Lhs = lhs;
a.Rhs = rhs;
a.IsLocal = true;
if (!reader.ConsumeKeyword("do"))
error("'do' expected");
List<Statement> block = ParseStatementList(us.Scope);
if (!reader.ConsumeKeyword("end"))
error("'end' expected");
us.Vars = a;
us.Body = block;
stat = us;
}
#endif
else
{
// statementParseExpr
Expression suffixed = ParseSuffixedExpr(scope);
// assignment or call?
if (reader.IsSymbol(',') || reader.IsSymbol('='))
{
// check that it was not parenthesized, making it not an lvalue
if (suffixed.ParenCount > 0)
error("Can not assign to parenthesized expression, it is not an lvalue");
// more processing needed
List<Expression> lhs = new List<Expression> { suffixed };
while (reader.ConsumeSymbol(','))
{
lhs.Add(ParseSuffixedExpr(scope));
}
// equals
if (!reader.ConsumeSymbol('='))
error("'=' expected");
//rhs
List<Expression> rhs = new List<Expression>();
rhs.Add(ParseExpr(scope));
while (reader.ConsumeSymbol(','))
{
rhs.Add(ParseExpr(scope));
}
AssignmentStatement a = new AssignmentStatement();
a.Lhs = lhs;
a.Rhs = rhs;
stat = a;
}
#if !VANILLA_LUA
else if (isAugmentedAssignment(reader.Peek()))
{
AugmentedAssignmentStatement aas = new AugmentedAssignmentStatement();
Expression left = suffixed;
Expression right = null;
string augmentedOp = reader.Get().Data;
right = ParseExpr(scope);
BinOpExpr nRight = new BinOpExpr();
nRight.Lhs = left;
nRight.Op = augmentedOp.Substring(0, augmentedOp.Length - 1); // strip the '='
nRight.Rhs = right;
aas.Lhs = new List<Expression> { left };
aas.Rhs = new List<Expression> { nRight };
stat = aas;
}
#endif
else if (suffixed is CallExpr ||
suffixed is TableCallExpr ||
suffixed is StringCallExpr)
{
//it's a call statement
CallStatement c = new CallStatement();
c.Expression = suffixed;
stat = c;
}
else
error("assignment statement expected");
}
stat.ScannedTokens = reader.Range(startP, reader.p);
if (reader.Peek().Data == ";" && reader.Peek().Type == TokenType.Symbol)
{
stat.HasSemicolon = true;
stat.SemicolonToken = reader.Get();
}
if (stat.Scope == null)
stat.Scope = scope;
stat.LineNumber = startLine;
return stat;
}
