private IStatement StatementFromContext(Scope scope, DeltinScriptParser.Documented_statementContext statementContext)
{
switch (statementContext.statement())
{
case DeltinScriptParser.S_defineContext define: {
var newVar = new ScopedVariable(scope, new DefineContextHandler(this, define.define()));
return(new DefineAction(newVar));
}
case DeltinScriptParser.S_methodContext method: return(new CallMethodAction(this, scope, method.method(), false, scope));
case DeltinScriptParser.S_varsetContext varset: return(new SetVariableAction(this, scope, varset.varset()));
case DeltinScriptParser.S_exprContext s_expr: {
var expr = GetExpression(scope, s_expr.expr(), true, false);
if (expr is ExpressionTree == false || ((ExpressionTree)expr)?.Result is IStatement == false)
{
if (expr != null)
{
Script.Diagnostics.Error("Expressions can't be used as statements.", DocRange.GetRange(statementContext));
}
return(null);
}
else
{
return((ExpressionTree)expr);
}
}
case DeltinScriptParser.S_ifContext s_if: return(new IfAction(this, scope, s_if.@if()));
case DeltinScriptParser.S_whileContext s_while: return(new WhileAction(this, scope, s_while.@while()));
case DeltinScriptParser.S_forContext s_for: return(new ForAction(this, scope, s_for.@for()));
case DeltinScriptParser.S_for_autoContext s_forAuto: return(new AutoForAction(this, scope, s_forAuto.for_auto()));
case DeltinScriptParser.S_foreachContext s_foreach: return(new ForeachAction(this, scope, s_foreach.@foreach()));
case DeltinScriptParser.S_returnContext s_return: return(new ReturnAction(this, scope, s_return.@return()));
case DeltinScriptParser.S_deleteContext s_delete: return(new DeleteAction(this, scope, s_delete.delete()));
case DeltinScriptParser.S_continueContext s_continue: return(new ContinueAction(this, DocRange.GetRange(s_continue)));
case DeltinScriptParser.S_breakContext s_break: return(new BreakAction(this, DocRange.GetRange(s_break)));
case DeltinScriptParser.S_switchContext s_switch: return(new SwitchAction(this, scope, s_switch.@switch()));
case DeltinScriptParser.S_blockContext s_block: return(new BlockAction(this, scope, s_block));
default: return(null);
}
}
/// <summary>Gets an IStatement from a StatementContext.</summary>
/// <param name="scope">The scope the statement was created in.</param>
/// <param name="statementContext">The context of the statement.</param>
public IStatement GetStatement(Scope scope, DeltinScriptParser.Documented_statementContext statementContext)
{
IStatement statement = StatementFromContext(scope, statementContext);
// Apply related output comment.
if (statementContext.DOCUMENTATION() != null)
{
string text = statementContext.DOCUMENTATION().GetText().Substring(1).Trim();
DocRange range = DocRange.GetRange(statementContext.DOCUMENTATION());
statement.OutputComment(Script.Diagnostics, range, text);
}
return(statement);
}
