public ForAction(ParseInfo parseInfo, Scope scope, DeltinScriptParser.ForContext forContext)
{
Scope varScope = scope.Child();
if (forContext.define() != null)
{
DefinedVariable = new ScopedVariable(varScope, new DefineContextHandler(parseInfo, forContext.define()));
}
else if (forContext.initialVarset != null)
{
InitialVarSet = new SetVariableAction(parseInfo, varScope, forContext.initialVarset);
}
if (forContext.expr() != null)
{
Condition = DeltinScript.GetExpression(parseInfo, varScope, forContext.expr());
}
if (forContext.endingVarset != null)
{
SetVariableAction = new SetVariableAction(parseInfo, varScope, forContext.endingVarset);
}
// Get the block.
if (forContext.block() != null)
{
Block = new BlockAction(parseInfo.SetLoop(this), varScope, forContext.block());
// Get the path info.
Path = new PathInfo(Block, DocRange.GetRange(forContext.FOR()), false);
}
else
{
parseInfo.Script.Diagnostics.Error("Expected a block.", DocRange.GetRange(forContext.RIGHT_PAREN()));
}
}
private IStatement StatementFromContext(Scope scope, IParseStatement statementContext)
{
switch (statementContext)
{
case VariableDeclaration declare: {
var newVar = new ScopedVariable(true, scope, new DefineContextHandler(this, declare)).GetVar();
return(new DefineAction(newVar));
}
case Assignment assignment: return(new SetVariableAction(this, scope, assignment));
case Increment increment: return(new IncrementAction(this, scope, increment));
case If @if: return(new IfAction(this, scope, @if));
case While @while: return(new WhileAction(this, scope, @while));
case For @for: return(new ForAction(this, scope, @for));
case Foreach @foreach: return(new ForeachAction(this, scope, @foreach));
case Return @return: return(new ReturnAction(this, scope, @return));
case Delete delete: return(new DeleteAction(this, scope, delete));
case Continue @continue: return(new ContinueAction(this, @continue.Range));
case Break @break: return(new BreakAction(this, @break.Range));
case Switch @switch: return(new SwitchAction(this, scope, @switch));
case Block @block: return(new BlockAction(this, scope, @block));
case FunctionExpression func: return(new CallMethodAction(this, scope, func, false, scope));
// Expression statements (functions)
case ExpressionStatement exprStatement:
// Parse the expression
var expr = GetExpression(scope, exprStatement.Expression, false);
if (!expr.IsStatement())
{
Script.Diagnostics.Error("Expressions can't be used as statements.", statementContext.Range);
return(new MissingElementAction(TranslateInfo));
}
if (expr is IStatement == false)
{
return(new MissingElementAction(TranslateInfo));
}
return((IStatement)expr);
// New
case NewExpression newExpression: return(new CreateObjectAction(this, scope, newExpression));
default: return(new MissingElementAction(TranslateInfo));
}
}
public static IStatement GetStatement(ParseInfo parseInfo, Scope scope, DeltinScriptParser.StatementContext statementContext)
{
switch (statementContext)
{
case DeltinScriptParser.S_defineContext define: {
var newVar = new ScopedVariable(scope, new DefineContextHandler(parseInfo, define.define()));
return(new DefineAction(newVar));
}
case DeltinScriptParser.S_methodContext method: return(new CallMethodAction(parseInfo, scope, method.method(), false, scope));
case DeltinScriptParser.S_varsetContext varset: return(new SetVariableAction(parseInfo, scope, varset.varset()));
case DeltinScriptParser.S_exprContext s_expr: {
var expr = GetExpression(parseInfo, scope, s_expr.expr(), true, false);
if (expr is ExpressionTree == false || ((ExpressionTree)expr)?.Result is IStatement == false)
{
if (expr != null)
{
parseInfo.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(parseInfo, scope, s_if.@if()));
case DeltinScriptParser.S_whileContext s_while: return(new WhileAction(parseInfo, scope, s_while.@while()));
case DeltinScriptParser.S_forContext s_for: return(new ForAction(parseInfo, scope, s_for.@for()));
case DeltinScriptParser.S_for_autoContext s_forAuto: return(new AutoForAction(parseInfo, scope, s_forAuto.for_auto()));
case DeltinScriptParser.S_foreachContext s_foreach: return(new ForeachAction(parseInfo, scope, s_foreach.@foreach()));
case DeltinScriptParser.S_returnContext s_return: return(new ReturnAction(parseInfo, scope, s_return.@return()));
case DeltinScriptParser.S_deleteContext s_delete: return(new DeleteAction(parseInfo, scope, s_delete.delete()));
case DeltinScriptParser.S_continueContext s_continue: return(new ContinueAction(parseInfo, DocRange.GetRange(s_continue)));
case DeltinScriptParser.S_breakContext s_break: return(new BreakAction(parseInfo, DocRange.GetRange(s_break)));
case DeltinScriptParser.S_switchContext s_switch: return(new SwitchAction(parseInfo, scope, s_switch.@switch()));
case DeltinScriptParser.S_blockContext s_block: return(new BlockAction(parseInfo, scope, s_block));
default: return(null);
}
}
