// This method looks up the depth of the $CONTENT identifier.
// We use it to determine where to cut relative paths.
// TODO: Parse wrapper only once, not one time per pattern. Well, it hardly matters for performance I think, so leave it.
public void SetCutDepthAndCutPath()
{
var wrapperCompileResult = VB6Compiler.Compile("Test.bas", vbWrapperCode, false);
var translator = new Translator(wrapperCompileResult);
DebugClass.LogError("SetCutDepthAndCutPath: " + vbWrapperCode);
var visitorCallback = new VisitorCallback()
{
Callback = (node, parent) =>
{
var identifier = node.getText().Trim('"').Trim();
//if (identifier == Content)
var path = translator.GetExtendedPathList(node);
DebugClass.LogError("SetCutDepthAndCutPath: " + VbCode + ": " + PrintPath(path));
if (identifier == Content)
{
// Exact match
if (path[path.Count - 1].NodeTypeName == "VsICSContext")
{
cutDepthOfContent = path.Count - 1;
DebugClass.LogError("SetCutDepth: MATCH");
}
// Bounded
if (!PathContains(path, "VsICSContext"))
{
cutDepthOfContent = path.Count;
DebugClass.LogError("SetCutDepth: BOUND MATCH");
}
cutPath = path.Take(cutDepthOfContent).ToList();
}
}
};
// First time is to set cutDepthOfContent
VB6Compiler.Visit(wrapperCompileResult, visitorCallback);
// Second time is to set cutPath
VB6Compiler.Visit(wrapperCompileResult, visitorCallback);
if (cutDepthOfContent == -1)
{
throw new InvalidOperationException(nameof(cutDepthOfContent) + " not initialized");
}
}
private void frmVB6ASTBrowser_Load(object sender, EventArgs e)
{
var compileResult = VB6Compiler.Compile(FileName, null, false);
nodeMap = new Dictionary <ParseTree, TreeNode>();
translator = new Translator(compileResult);
var visitorCallback = new VisitorCallback()
{
Callback = (node, parent) =>
{
var name = VbToCsharpPattern.LookupNodeType(node);
var lines = node.getText().Split('\n');
string firstLine = (lines.Length > 0) ? lines[0] : "";
if (parent != null && nodeMap.ContainsKey(parent))
{
var tvNode = nodeMap[parent].Nodes.Add(nodeMap.Count.ToString(new NumberFormatInfo()), name + ": " + firstLine);
tvNode.Tag = node;
nodeMap[node] = tvNode;
}
else
{
var tvNode = treVB6AST.Nodes.Add(nodeMap.Count.ToString(new NumberFormatInfo()), name + ": " + firstLine);
tvNode.Tag = node;
nodeMap[node] = tvNode;
}
//nodes.Add(node);
}
};
txtDebug.ScrollBars = ScrollBars.Both;
VB6Compiler.Visit(compileResult, visitorCallback);
//treVB6AST.ExpandAll();
}
public VB6NodeTree(CompileResult compileResult)
{
var visitorCallback = Init();
VB6Compiler.Visit(compileResult, visitorCallback);
}
public void VbParsePattern(string pattern)
{
SetCutDepthAndCutPath();
var code = vbWrapperCode.Replace(Content, pattern);
var compileResult = VB6Compiler.Compile("Test.bas", code, false);
var translator = new Translator(compileResult);
PatternIdentifiers = GetIdentifiersAndSetTokens(translator, compileResult);
var paths = new List <IndexedPath> [PatternIdentifiers.Length];
ParseTree root = null;
DebugClass.LogError("PATTERN: " + VbCode);
var visitorCallback = new VisitorCallback()
{
Callback = (node, parent) =>
{
DebugClass.LogError("Node: " + PrintPath(translator.GetExtendedPathList(node)) + ": " + node.getText());
if (root == null)
{
root = node;
}
var i = 0;
foreach (var identifier in PatternIdentifiers)
{
if (node.getText().Trim('"') == identifier &&
IsInsideSubOrFunction(translator.GetExtendedPathList(node)))
{
var path = translator.GetExtendedPathList(node);
if (paths[i] == null)
{
paths[i] = path;
}
}
i++;
}
}
};
VB6Compiler.Visit(compileResult, visitorCallback);
var lowestCommonDepth = -1;
var cutDepth = -1;
var comparePath = paths.Length > 0 ? paths[0] : tokenPath;
if (comparePath == null)
{
DebugClass.LogError("VB Code: " + VbCode);
throw new InvalidOperationException(nameof(comparePath) + " is null");
}
int commonDepth = Math.Min(cutPath.Count, comparePath.Count);
for (int i = 0; i < commonDepth; i++)
{
DebugClass.LogError("COMPARE PATHS: " + PrintPath(cutPath));
foreach (var path in paths)
{
DebugClass.LogError("COMPARE PATHS: " + PrintPath(path));
}
DebugClass.LogError("");
if (cutPath[i].NodeTypeName != comparePath[i].NodeTypeName)
{
break;
}
else
{
lowestCommonDepth = Math.Min(comparePath.Count - 1, i + 1);
}
}
if (lowestCommonDepth >= comparePath.Count)
{
DebugClass.LogError("VB Code: " + VbCode + ", Identifier: " + PatternIdentifiers[0]);
}
VbTreeNodeType = comparePath[lowestCommonDepth].NodeTypeName;
// Skip uninteresting wrapper nodes
while (VbTreeNodeType == "VsICSContext" ||
VbTreeNodeType == "ImplicitCallStmt_InStmtContext")
{
lowestCommonDepth++;
VbTreeNodeType = comparePath[lowestCommonDepth].NodeTypeName;
}
// VbTreeNodeType == "ICS_B_ProcedureCallContext")
while (VbTreeNodeType == "ArgsCallContext" ||
VbTreeNodeType == "AmbiguousIdentifierContext")
{
lowestCommonDepth--;
VbTreeNodeType = comparePath[lowestCommonDepth].NodeTypeName;
}
cutDepth = lowestCommonDepth + 1;
finalCutDepthOfContent = cutDepth;
var cutPaths = new List <IndexedPath> [PatternIdentifiers.Length];
var k = 0;
foreach (var path in paths)
{
var cutPath = new List <IndexedPath>();
for (var i = cutDepth; i < path.Count; i++)
{
cutPath.Add(path[i]);
}
cutPaths[k] = cutPath;
k++;
}
VbPaths = cutPaths;
}
public string[] GetIdentifiersAndSetTokens(Translator translator, CompileResult compileResult)
{
var identifiers = new List <string>();
var tokensPerNode = new List <TokenInfo>();
//var tokens = new List<Tuple<int, string>>();
var seen = new Dictionary <string, bool>();
var visitorCallback = new VisitorCallback()
{
Callback = (node, parent) =>
{
//if (node.GetType().Name == "AmbiguousIdentifierContext")
var identifier = node.getText().Trim('"').Trim();
//DebugClass.Log("GetIdentifier: " + identifier);
var path = translator.GetExtendedPathList(node);
if (IsInsideSubOrFunction(path))
{
if (identifier.Length == 1 &&
identifier.All(char.IsUpper))
{
if (!seen.ContainsKey(identifier))
{
seen[identifier] = true;
if (identifier != ReservedLetterForDiscardedResults)
{
identifiers.Add(identifier);
}
}
}
else
{
// A general method will for each token add the parent node, and its path,
// then extract this path for each token, extract all tokens from path and
// check that the token exists in the extracted tokens.
// Does this account for the order? Partly, it accounts for the order
// within different nodes, but not multiple tokens within the same node.
// So to handle that we need to group tokens by node.
var tokens = GetTokens(node);
if (tokens.Count > 0)
{
tokenPath = tokenPath ?? path;
tokensPerNode.Add(new TokenInfo(path, tokens.Select(x => x.Item2).ToList()));
DebugClass.LogError("TOKENS" + string.Join("@", tokens));
}
}
}
}
};
VB6Compiler.Visit(compileResult, visitorCallback);
_patternTokens = tokensPerNode;
if (cutDepthOfContent == -1)
{
throw new InvalidOperationException(nameof(cutDepthOfContent) + " not initialized");
}
return(identifiers.ToArray());
}