public ScriptFunctionDefinition(AstNodeArgs args)
: base(args)
{
Token funcName = ChildNodes[1] as Token;
int index = 0;
if (funcName != null)
{
Name = funcName.Text;
}
else
//Function expression
{
Name = null;
index = 1;
}
if (ChildNodes.Count == 5-index)
{
Contract = ChildNodes[3 - index] as ScriptFuncContract;
Parameters = ChildNodes[3 - index] as ScriptFuncParameters;
}
if (ChildNodes.Count == 6 - index)
{
Parameters = ChildNodes[2 - index] as ScriptFuncParameters;
GlobalList = ChildNodes[3 - index] as ScriptGlobalList;
Contract = ChildNodes[4 - index] as ScriptFuncContract;
}
Body = (ScriptAst)ChildNodes[ChildNodes.Count - 1];
}
public ScriptFunctionDefinition(AstNodeArgs args)
: base(args)
{
Token funcName = ChildNodes[1] as Token;
int index = 0;
if (funcName != null)
{
Name = funcName.Text;
}
else
//Function expression
{
Name = null;
index = 1;
}
if (ChildNodes.Count == 5 - index)
{
Contract = ChildNodes[3 - index] as ScriptFuncContract;
Parameters = ChildNodes[3 - index] as ScriptFuncParameters;
}
if (ChildNodes.Count == 6 - index)
{
Parameters = ChildNodes[2 - index] as ScriptFuncParameters;
GlobalList = ChildNodes[3 - index] as ScriptGlobalList;
Contract = ChildNodes[4 - index] as ScriptFuncContract;
}
Body = (ScriptAst)ChildNodes[ChildNodes.Count - 1];
}
public ScriptForStatement(AstNodeArgs args)
: base(args)
{
init = (ScriptAst)args.ChildNodes[1];
cond = (ScriptAst)args.ChildNodes[2];
next = (ScriptAst)args.ChildNodes[3];
statement = (ScriptStatement)args.ChildNodes[4];
}
public ScriptForStatement(AstNodeArgs args)
: base(args)
{
init = (ScriptAst)args.ChildNodes[1];
cond = (ScriptAst)args.ChildNodes[2];
next = (ScriptAst)args.ChildNodes[3];
statement = (ScriptStatement)args.ChildNodes[4];
}
public ScriptFlowControlStatement(AstNodeArgs args)
: base(args)
{
Token oper = ChildNodes[0] as Token;
operation = oper.Text;
Debug.Assert(oper.Text == "return" || oper.Text == "break" || oper.Text == "continue" || oper.Text == "throw");
if (operation == "return" || operation == "throw")
expression = (ScriptExpr)ChildNodes[1];
}
public ScriptMetaExpr(AstNodeArgs args)
: base(args)
{
AstNodeArgs progArgs = new AstNodeArgs();
progArgs.ChildNodes = new AstNodeList();
progArgs.ChildNodes.Add(ChildNodes[1]);
progArgs.Span = args.Span;
progArgs.Term = args.Term;
metaProg = new ScriptProg(progArgs);
metaProg.Parent = this;
}
public ScriptMetaExpr(AstNodeArgs args)
: base(args)
{
AstNodeArgs progArgs = new AstNodeArgs();
progArgs.ChildNodes = new AstNodeList();
progArgs.ChildNodes.Add(ChildNodes[1]);
progArgs.Span = args.Span;
progArgs.Term = args.Term;
metaProg = new ScriptProg(progArgs);
metaProg.Parent = this;
}
public ScriptFlowControlStatement(AstNodeArgs args)
: base(args)
{
Token oper = ChildNodes[0] as Token;
operation = oper.Text;
Debug.Assert(oper.Text == "return" || oper.Text == "break" || oper.Text == "continue" || oper.Text == "throw");
if (operation == "return" || operation == "throw")
{
expression = (ScriptExpr)ChildNodes[1];
}
}
/// <summary>
/// Evaluates script
/// </summary>
/// <param name="Context">ScriptContext</param>
public virtual void Evaluate(IScriptContext context)
{
if (ChildNodes.Count > 0)
{
int index = 0;
while (index < ChildNodes.Count)
{
ScriptAst node = ChildNodes[index] as ScriptAst;
if (node != null)
{
node.Evaluate(context);
}
index++;
}
}
}
private string ConcreteSyntaxTree(string inted)
{
string tree = Term.Name + "\r\n";
inted += " ";
foreach (AstNode node in ChildNodes)
{
ScriptAst scriptNode = node as ScriptAst;
if (scriptNode != null)
{
tree += inted + scriptNode.ConcreteSyntaxTree(inted);
}
else
{
if (!string.IsNullOrEmpty(node.Term.DisplayName))
{
tree += inted + node.ToString() + "\r\n";
}
}
}
return(tree);
}
//TODO: Implement Breaking, Returning, etc. here
public override void Evaluate(IScriptContext context)
{
if (ChildNodes.Count == 0)
{
return;
}
int index = 0;
while (index < ChildNodes.Count)
{
ScriptAst node = (ScriptAst)ChildNodes[index];
node.Evaluate(context);
if (context.IsBreak() || context.IsReturn() || context.IsContinue())
{
break;
}
index++;
}
}
/// <summary>
/// Returns source code for given node
/// </summary>
/// <param name="node">Node</param>
/// <returns>source code</returns>
public string Code(ScriptAst node)
{
return SourceCode.Substring(node.Span.Start.Position, node.Span.Length);
}
protected static bool CheckCondition(ScriptAst cond, IScriptContext context)
{
cond.Evaluate(context);
return((bool)context.Result);
}
public ScriptUsingStatement(AstNodeArgs args)
: base(args)
{
name = args.ChildNodes[1] as ScriptQualifiedName;
statement = args.ChildNodes[2] as ScriptAst;
}
public ScriptUsingStatement(AstNodeArgs args)
: base(args)
{
name = args.ChildNodes[1] as ScriptQualifiedName;
statement = args.ChildNodes[2] as ScriptAst;
}
protected static bool CheckCondition(ScriptAst cond, IScriptContext context)
{
cond.Evaluate(context);
return (bool)context.Result;
}