/// <summary>
/// ExprStmt
/// ListExpr SEMICOLON
/// </summary>
/// <returns></returns>
private ExprStmt ParseExprStmt()
{
ExprStmt ret = new ExprStmt(ParseExprList());
Consume(TokenType.SEMICOLON);
return(ret);
}
Stmt ParseStmt()
{
Modifier modifier = ParseModifier();
IList <string> name1 = ParseName(); // Type of Variable
IList <string> name2 = ParseName(); // Variable
string symb = GetSymbol();
if (name1.Count > 0 && name2.Count > 0 && symb == "(")
{
FuncDefinition result = new FuncDefinition();
result.Modifier = modifier;
result.Type = new AType();
result.Type.Name = name1;
result.Name = name2[0];
result.Args = ParseArguments();
Skip(":");
result.Body = ParseCompoundStmt();
return(result);
}
else if (name1.Count > 0 && name2.Count > 0 && symb == "=")
{
VarDeclaration var = new VarDeclaration();
var.Type = new AType();
var.Type.Name = name1;
var.Name = name2[0];
var.Expr = ParseExpr();
Skip(";");
return(var);
}
else if (name1.Count > 0 && name2.Count == 0 && symb == "=")
{
VarDeclaration result = new VarDeclaration();
return(result);
}
else if (name1.Count > 0 && name2.Count == 0 && symb == "(")
{// Ex. hello.Print(str);
ExprStmt stmt = new ExprStmt();
stmt.Expr = ParseFuncCall(false, name1);
return(stmt);
}
else
{
ExprStmt stmt = new ExprStmt();
stmt.Expr = ParseExpr();
return(stmt);
}
}
public override Null Visit(ExprStmt node)
{
base.Visit(node);
if (node.value.computedType is MetaType) {
log.ErrorMetaTypeExpr(node.location);
}
return null;
}
public void visit_expression(ExprStmt expr_stmt)
{
evaluate(expr_stmt.expression);
}
public void visit_expression(ExprStmt expr_stmt)
{
resolve(expr_stmt.expression);
}
public static Int32 Parse(List<Token> src, Int32 begin, out Stmt stmt)
{
stmt = null;
Expr expr;
Int32 current = _expression.Parse(src, begin, out expr);
if (current == -1) {
expr = null;
current = begin;
}
if (!Parser.IsSEMICOLON(src[current])) {
return -1;
}
current++;
stmt = new ExprStmt(expr);
return current;
}
private void Resolve(ExprStmt expression)
{
Resolve(expression.Value);
}
Stmt ParseStmt()
{
Modifier modifier = ParseModifier();
IList<string> name1 = ParseName(); // Type of Variable
IList<string> name2 = ParseName(); // Variable
string symb = GetSymbol();
if (name1.Count > 0 && name2.Count > 0 && symb == "(")
{
FuncDefinition result = new FuncDefinition();
result.Modifier = modifier;
result.Type = new AType();
result.Type.Name = name1;
result.Name = name2[0];
result.Args = ParseArguments();
Skip(":");
result.Body = ParseCompoundStmt();
return result;
}
else if (name1.Count > 0 && name2.Count > 0 && symb == "=")
{
VarDeclaration var = new VarDeclaration();
var.Type = new AType();
var.Type.Name = name1;
var.Name = name2[0];
var.Expr = ParseExpr();
Skip(";");
return var;
}
else if (name1.Count > 0 && name2.Count == 0 && symb == "=")
{
VarDeclaration result = new VarDeclaration();
return result;
}
else if (name1.Count > 0 && name2.Count == 0 && symb == "(")
{// Ex. hello.Print(str);
ExprStmt stmt = new ExprStmt();
stmt.Expr = ParseFuncCall(false, name1);
return stmt;
}
else
{
ExprStmt stmt = new ExprStmt();
stmt.Expr = ParseExpr();
return stmt;
}
}
private void Execute(ExprStmt expression)
{
Evaluate(expression.Value);
}