public ExtractedMethodCreator(JAst ast, ScopeStatement[] scopes, HashSet<JVariable> inputVariables, HashSet<JVariable> outputVariables, SelectionTarget target, int indentSize, bool insertTabs)
{
_ast = ast;
_scopes = scopes;
_inputVars = new List<JVariable>(inputVariables);
_outputVars = new List<JVariable>(outputVariables);
_inputVars.Sort(CompareVariables);
_outputVars.Sort(CompareVariables);
_target = target;
_indentSize = indentSize;
_insertTabs = insertTabs;
}
public ExtractMethodRequest(ScopeStatement targetScope, string name, string[] parameters)
{
_name = name;
_parameters = parameters;
_targetScope = targetScope;
}
public NodeTarget(Dictionary<ScopeStatement, int> insertLocations, ScopeStatement[] parents, Node node)
: base(insertLocations, parents)
{
_node = node;
}
public SuiteTarget(Dictionary<ScopeStatement, int> insertLocations, ScopeStatement[] parents, SuiteStatement suite, SuiteStatement[] followingSuites, Span selectedSpan, int startIndex, int endIndex)
: base(insertLocations, parents)
{
_suite = suite;
_start = startIndex;
_end = endIndex;
_followingSuites = followingSuites;
_selectedSpan = selectedSpan;
}
public SelectionTarget(Dictionary<ScopeStatement, int> insertLocations, ScopeStatement[] parents)
{
_parents = parents;
_insertLocations = insertLocations;
}
internal override bool TryBindOuter(ScopeStatement from, string name, bool allowGlobals, out JVariable variable)
{
// Functions expose their locals to direct access
ContainsNestedFreeVariables = true;
if (TryGetVariable(name, out variable)) {
variable.AccessedInNestedScope = true;
if (variable.Kind == VariableKind.Local || variable.Kind == VariableKind.Parameter) {
from.AddFreeVariable(variable, true);
for (ScopeStatement scope = from.Parent; scope != this; scope = scope.Parent) {
scope.AddFreeVariable(variable, false);
}
AddCellVariable(variable);
} else if(allowGlobals) {
from.AddReferencedGlobal(name);
}
return true;
}
return false;
}
public static void Check(ScopeStatement scope)
{
if (scope.ScopeVariables != null) {
FlowChecker fc = new FlowChecker(scope);
scope.Walk(fc);
}
}
public FlowChecker(ScopeStatement scope)
{
var scopeVars = scope.ScopeVariables;
_variables = new Dictionary<string, JVariable>(scopeVars.Count);
foreach (var scopeVar in scopeVars) {
_variables[scopeVar.Name] = scopeVar;
}
_bits = new BitArray(_variables.Count * 2);
int index = 0;
_variableIndices = new Dictionary<JVariable, int>(_variables.Count);
foreach (var binding in _variables) {
_variableIndices[binding.Value] = index++;
}
_scope = scope;
_fdef = new FlowDefiner(this);
_fdel = new FlowDeleter(this);
}
internal virtual bool TryBindOuter(ScopeStatement from, string name, bool allowGlobals, out JVariable variable)
{
// Hide scope contents by default (only functions expose their locals)
variable = null;
return false;
}
public ImportWalker(ScopeStatement targetStmt)
{
_targetStmt = targetStmt;
}
internal override bool TryBindOuter(ScopeStatement from, string name, bool allowGlobals, out JVariable variable)
{
if (allowGlobals) {
// Unbound variable
from.AddReferencedGlobal(name);
if (from.HasLateBoundVariableSets) {
// If the context contains unqualified exec, new locals can be introduced
// Therefore we need to turn this into a fully late-bound lookup which
// happens when we don't have a JVariable.
variable = null;
return false;
} else {
// Create a global variable to bind to.
variable = EnsureGlobalVariable(name);
return true;
}
}
variable = null;
return false;
}