public string GetFunctionAtPoint(int column, int line, out int argumentIndex)
{
// Translate global line index to local index.
line = line - lineOffsetIntoContent;
argumentIndex = -1; // No argument.
if (null == topMostFunctionPart)
{
return(null);
}
FunctionCallPart intersection = topMostFunctionPart.GetIntersectionPart(column, line);
if (null == intersection)
{
return(null);
}
FunctionCallPart parentPart = intersection.ParentPart as FunctionCallPart;
if (null != parentPart)
{
argumentIndex = parentPart.GetArgumentIndex(intersection);
return(parentPart.Identifier);
}
System.Diagnostics.Debug.Assert(intersection == topMostFunctionPart);
if (intersection == topMostFunctionPart)
{
argumentIndex = 0;
return(topMostFunctionPart.Identifier);
}
return(null);
}
public FunctionCallPart GetIntersectionPart(System.Drawing.Point point)
{
if (null != argumentParts)
{
foreach (FunctionCallPart part in argumentParts)
{
FunctionCallPart intersection = part.GetIntersectionPart(point);
if (null != intersection)
{
return(intersection);
}
}
}
// If there was no child argument parts, or none of them is intersecting
// with the input point, then test the parent (this) function call part.
if (point.Y < startPoint.Y || (point.Y > endPoint.Y))
{
return(null); // The point lies outside of the range.
}
if (point.Y == startPoint.Y && (point.X < startPoint.X))
{
return(null); // On the first line, but outside of range.
}
if (point.Y == endPoint.Y && (point.X > endPoint.X))
{
return(null); // On the last line, but outside of range.
}
return(this);
}
public int GetArgumentIndex(FunctionCallPart argumentPart)
{
if (null == argumentParts)
{
return(-1);
}
return(argumentParts.IndexOf(argumentPart));
}
public void AddArgumentPart(FunctionCallPart argumentPart)
{
if (null == argumentParts)
{
argumentParts = new List <FunctionCallPart>();
}
argumentPart.ParentPart = this;
argumentParts.Add(argumentPart);
UpdateStartPointInternal(argumentPart.StartPoint);
UpdateEndPointInternal(argumentPart.EndPoint);
}
private FunctionCallContext(List <string> content,
System.Drawing.Point startPoint, System.Drawing.Point endPoint)
{
lineOffsetIntoContent = startPoint.Y;
StringBuilder contentBuilder = new StringBuilder();
for (int index = startPoint.Y; index <= endPoint.Y; ++index)
{
string line = content[index];
if (index == startPoint.Y)
{
// We're looking at the first line to copy, replace
// everything before the start point with blank space.
if (startPoint.X > 0)
{
contentBuilder.Append(new string(' ', startPoint.X));
}
contentBuilder.Append(line.Substring(startPoint.X));
continue;
}
// We have come into region of another statement
if (line.IndexOf('=') != -1)
{
break; // Get outta here!
}
contentBuilder.Append(line);
}
string intermediate = contentBuilder.ToString();
intermediate = PatchContent(intermediate);
MemoryStream inputStream = new MemoryStream(
Encoding.Default.GetBytes(intermediate));
FunctionCallParser.Scanner scanner = new FunctionCallParser.Scanner(inputStream);
FunctionCallParser.Parser parser = new FunctionCallParser.Parser(scanner);
parser.Parse();
topMostFunctionPart = parser.RootFunctionCallPart;
}
public void AddDefaultArgument(System.Drawing.Point start, System.Drawing.Point end)
{
// This "default argument" is not the same as a term used in regular
// context. It is an argument for function call that does not specify
// any argument. This is inserted so that when queried, the argument
// index at the cursor location returns "0" instead of "-1" (which
// means there's no argument found in cursor location). AutoComplete
// tooltip should always highlight the first argument even before the
// first argument is typed in. This should only be done when there is
// no argument specified yet (as user types).
//
System.Diagnostics.Debug.Assert(this.HasArgument == false);
FunctionCallPart defaultArgument = new FunctionCallPart();
defaultArgument.SetStartPoint(start);
defaultArgument.SetEndPoint(end);
this.AddArgumentPart(defaultArgument);
}
private FunctionCallContext(List<string> content,
System.Drawing.Point startPoint, System.Drawing.Point endPoint)
{
lineOffsetIntoContent = startPoint.Y;
StringBuilder contentBuilder = new StringBuilder();
for (int index = startPoint.Y; index <= endPoint.Y; ++index)
{
string line = content[index];
if (index == startPoint.Y)
{
// We're looking at the first line to copy, replace
// everything before the start point with blank space.
if (startPoint.X > 0)
contentBuilder.Append(new string(' ', startPoint.X));
contentBuilder.Append(line.Substring(startPoint.X));
continue;
}
// We have come into region of another statement
if (line.IndexOf('=') != -1)
break; // Get outta here!
contentBuilder.Append(line);
}
string intermediate = contentBuilder.ToString();
intermediate = PatchContent(intermediate);
MemoryStream inputStream = new MemoryStream(
Encoding.Default.GetBytes(intermediate));
FunctionCallParser.Scanner scanner = new FunctionCallParser.Scanner(inputStream);
FunctionCallParser.Parser parser = new FunctionCallParser.Parser(scanner);
parser.Parse();
topMostFunctionPart = parser.RootFunctionCallPart;
}
void CommonFunctionCall(FunctionCallPart part) {
CommonIdentifier(part);
while (la.kind == 9) {
CommonArguments(part);
}
}
void CommonArrayExpression(FunctionCallPart part) {
Expect(53);
part.SetStartPoint(t, false);
if (StartOf(4)) {
FunctionCallPart elementPart = new FunctionCallPart();
CommonExpression(elementPart);
part.AddArgumentPart(elementPart);
while (la.kind == 54) {
Get();
elementPart = new FunctionCallPart();
CommonExpression(elementPart);
part.AddArgumentPart(elementPart);
}
}
Expect(55);
part.SetEndPoint(t, true);
}
void CommonComparisonExpression(FunctionCallPart part) {
CommonRangeExpression(part);
while (StartOf(2)) {
CommonComparisonOperator(part);
CommonRangeExpression(part);
}
}
void CommonNameReference(FunctionCallPart part) {
if (la.kind == 1) {
CommonFunctionCall(part);
} else if (la.kind == 53) {
CommonArrayExpression(part);
} else SynErr(63);
if (la.kind == 7) {
Get();
part.AppendIdentifier(t); part.SetEndPoint(t, false);
if (StartOf(4)) {
CommonExpression(part);
part.SetEndPoint(t, false);
}
Expect(8);
part.AppendIdentifier(t); part.SetEndPoint(t, false);
while (la.kind == 7) {
Get();
part.AppendIdentifier(t); part.SetEndPoint(t, false);
if (StartOf(4)) {
CommonExpression(part);
part.SetEndPoint(t, false);
}
Expect(8);
part.AppendIdentifier(t); part.SetEndPoint(t, false);
}
}
}
void FunctionCallParser() {
rootFunctionCallPart = new FunctionCallPart();
CommonExpression(rootFunctionCallPart);
}
public void AddDefaultArgument(System.Drawing.Point start, System.Drawing.Point end)
{
// This "default argument" is not the same as a term used in regular
// context. It is an argument for function call that does not specify
// any argument. This is inserted so that when queried, the argument
// index at the cursor location returns "0" instead of "-1" (which
// means there's no argument found in cursor location). AutoComplete
// tooltip should always highlight the first argument even before the
// first argument is typed in. This should only be done when there is
// no argument specified yet (as user types).
//
System.Diagnostics.Debug.Assert(this.HasArgument == false);
FunctionCallPart defaultArgument = new FunctionCallPart();
defaultArgument.SetStartPoint(start);
defaultArgument.SetEndPoint(end);
this.AddArgumentPart(defaultArgument);
}
void CommonMathOperator(FunctionCallPart part) {
if (la.kind == 45) {
Get();
} else if (la.kind == 12) {
Get();
} else if (la.kind == 46) {
Get();
} else if (la.kind == 47) {
Get();
} else if (la.kind == 48) {
Get();
} else SynErr(61);
}
void CommonLogicalExpression(FunctionCallPart part) {
CommonComparisonExpression(part);
while (la.kind == 49 || la.kind == 50) {
CommonLogicalOperator(part);
CommonComparisonExpression(part);
}
}
void CommonArithmeticExpression(FunctionCallPart part) {
CommonTerm(part);
while (StartOf(3)) {
CommonMathOperator(part);
CommonTerm(part);
}
}
void CommonTerm(FunctionCallPart part) {
switch (la.kind) {
case 40: {
Get();
break;
}
case 41: {
Get();
break;
}
case 42: {
Get();
break;
}
case 5: {
CommonCharacter(part);
break;
}
case 4: {
CommonString(part);
break;
}
case 1: case 2: case 3: case 12: case 53: {
CommonNegativeExpression(part);
break;
}
case 11: {
Get();
CommonTerm(part);
break;
}
default: SynErr(60); break;
}
}
void CommonComparisonOperator(FunctionCallPart part) {
switch (la.kind) {
case 15: {
Get();
break;
}
case 17: {
Get();
break;
}
case 14: {
Get();
break;
}
case 16: {
Get();
break;
}
case 18: {
Get();
break;
}
case 19: {
Get();
break;
}
default: SynErr(59); break;
}
}
void CommonRangeExpression(FunctionCallPart part) {
CommonArithmeticExpression(part);
if (la.kind == 21) {
Get();
CommonArithmeticExpression(part);
if (la.kind == 21) {
Get();
if (la.kind == 43 || la.kind == 44) {
if (la.kind == 43) {
Get();
} else {
Get();
}
}
CommonArithmeticExpression(part);
}
}
}
void CommonLogicalOperator(FunctionCallPart part) {
if (la.kind == 49) {
Get();
} else if (la.kind == 50) {
Get();
} else SynErr(58);
}
void CommonIdentifier(FunctionCallPart part) {
Expect(1);
part.Identifier = t.val;
}
public void AddArgumentPart(FunctionCallPart argumentPart)
{
if (null == argumentParts)
argumentParts = new List<FunctionCallPart>();
argumentPart.ParentPart = this;
argumentParts.Add(argumentPart);
UpdateStartPointInternal(argumentPart.StartPoint);
UpdateEndPointInternal(argumentPart.EndPoint);
}
void CommonArguments(FunctionCallPart part) {
Expect(9);
part.SetStartPoint(t, false);
part.SetEndPoint(la, true);
System.Drawing.Point openBracket = PointFromToken(t, false);
if (StartOf(4)) {
FunctionCallPart parentCallPart = part;
part = new FunctionCallPart();
part.SetStartPoint(t, false);
CommonExpression(part);
part.SetEndPoint(t, false);
parentCallPart.AddArgumentPart(part);
part = parentCallPart;
while (WeakSeparator(54,4,5) ) {
parentCallPart = part;
part = new FunctionCallPart();
part.SetStartPoint(t, false);
CommonExpression(part);
part.SetEndPoint(la, true);
parentCallPart.AddArgumentPart(part);
part = parentCallPart;
}
}
if (part.HasArgument == false) {
// See "AddDefaultArgument" for details.
System.Drawing.Point closeBracket = PointFromToken(la, true);
part.AddDefaultArgument(openBracket, closeBracket);
}
Expect(10);
part.SetEndPoint(t, true);
}
void CommonString(FunctionCallPart part) {
Expect(4);
}
void CommonExpression(FunctionCallPart part) {
if (StartOf(1)) {
CommonLogicalExpression(part);
} else if (la.kind == 51) {
CommonTernaryOperation(part);
} else SynErr(57);
}
void CommonNegativeExpression(FunctionCallPart part) {
if (la.kind == 12) {
Get();
part.AppendIdentifier(t);
}
if (la.kind == 2 || la.kind == 3) {
if (la.kind == 2) {
Get();
} else {
Get();
}
part.AppendIdentifier(t);
} else if (la.kind == 1 || la.kind == 53) {
CommonIdentifierList(part);
} else SynErr(62);
}
public int GetArgumentIndex(FunctionCallPart argumentPart)
{
if (null == argumentParts)
return -1;
return argumentParts.IndexOf(argumentPart);
}
void CommonIdentifierList(FunctionCallPart part) {
string partName = string.Empty;
CommonNameReference(part);
partName = part.Identifier;
while (la.kind == 6) {
Get();
CommonNameReference(part);
string newPartName = part.Identifier;
part.Identifier = partName + "." + newPartName;
partName = part.Identifier;
}
}
void CommonCharacter(FunctionCallPart part) {
Expect(5);
}
void CommonTernaryOperation(FunctionCallPart part) {
Expect(51);
CommonExpression(part);
Expect(52);
CommonExpression(part);
}
