/*
* Returns the extended end position of the given node.
*/
public int getExtendedEnd(ASTNode node) {
int end = node.getEnd();
if (this.trailingPtr >= 0) {
long range = -1;
for (int i = 0; range < 0 && i <= this.trailingPtr; i++) {
if (this.trailingNodes[i] == node) range = this.trailingIndexes[i];
}
if (range >= 0) {
Comment lastComment = this.comments[(int) range];
end = lastComment.getEnd();
}
}
return end - 1;
}
public void endVisitNode(ASTNode node) {
// Look if a child node is waiting for trailing comments computing
ASTNode sibling =
this.topSiblingParent == node ? (ASTNode) this.siblings[this.siblingPtr] : null;
if (sibling != null) {
try {
storeTrailingComments(
sibling, node.getEnd() - 1, true, this.parentLineRange[this.siblingPtr]);
} catch (Exception ex) {
// Give up extended ranges at this level if unexpected
// exception happens...
}
}
// Remove sibling if needed
if (this.topSiblingParent != null /* not a CompilationUnit */
&& this.topSiblingParent == node) {
this.siblingPtr--;
this.topSiblingParent = node.getParent();
}
}
protected void addError(String msg, ASTNode expr) {
int line = expr.getLineNumber();
int col = expr.getColumnNumber();
// GRECLIPSE
int start = expr.getStart();
int end = expr.getEnd() - 1;
if (expr instanceof ClassNode) {
// assume we have a class declaration
ClassNode cn = (ClassNode) expr;
if (cn.getNameEnd() > 0) {
start = cn.getNameStart();
end = cn.getNameEnd();
} else if (cn.getComponentType() != null) {
// avoid extra whitespace after closing ]
end--;
}
} else if (expr instanceof DeclarationExpression) {
// assume that we just want to underline the variable declaration
DeclarationExpression decl = (DeclarationExpression) expr;
Expression lhs = decl.getLeftExpression();
start = lhs.getStart();
// avoid extra space before = if a variable
end =
lhs instanceof VariableExpression ? start + lhs.getText().length() - 1 : lhs.getEnd() - 1;
}
// end
SourceUnit source = getSourceUnit();
source
.getErrorCollector()
.addErrorAndContinue(
// GRECLIPSE: start
new SyntaxErrorMessage(
new PreciseSyntaxException(msg + '\n', line, col, start, end), source)
// end
);
}
/**
* Search and store node trailing comments. Comments are searched in position range from node end
* position to specified next start. If one or several comment are found, returns last comment end
* position, otherwise returns node end position.
*
* <p>Starts to search for first comment after node end position and return if none was found...
*
* <p>When first comment is found after node, goes down in comment list until one of following
* conditions becomes true:
*
* <ol>
* <li>comment start is after next start
* <li>there's other than white characters between current node and comment
* <li>TODO there's more than 1 line between current node and comment
* </ol>
*
* If at least potential comments have been found, then all of them has to be separated from
* following node. So, remove all comments which do not verify this assumption. Note that this
* verification is not applicable on last node.
*
* <p>If finally there's still trailing comments, then stores indexes of the first and last one in
* trailing comments table.
*/
int storeTrailingComments(ASTNode node, int nextStart, boolean lastChild, int[] parentLineRange) {
// Init extended position
int nodeEnd = node.getEnd() - 1;
if (nodeEnd == nextStart) {
// special case for last child of its parent
if (++this.trailingPtr == 0) {
this.trailingNodes = new ASTNode[STORAGE_INCREMENT];
this.trailingIndexes = new long[STORAGE_INCREMENT];
this.lastTrailingPtr = -1;
} else if (this.trailingPtr == this.trailingNodes.length) {
int newLength = (this.trailingPtr * 3 / 2) + STORAGE_INCREMENT;
System.arraycopy(
this.trailingNodes,
0,
this.trailingNodes = new ASTNode[newLength],
0,
this.trailingPtr);
System.arraycopy(
this.trailingIndexes,
0,
this.trailingIndexes = new long[newLength],
0,
this.trailingPtr);
}
this.trailingNodes[this.trailingPtr] = node;
this.trailingIndexes[this.trailingPtr] = -1;
return nodeEnd;
}
int extended = nodeEnd;
// Get line number
int nodeEndLine = getLineNumber(nodeEnd, parentLineRange);
// Find comments range index
int idx = getCommentIndex(0, nodeEnd, 1);
if (idx == -1) {
return nodeEnd;
}
// Look after potential comments
int startIdx = idx;
int endIdx = -1;
int length = this.comments.length;
int commentStart = extended + 1;
int previousEnd = nodeEnd + 1;
int sameLineIdx = -1;
while (idx < length && commentStart < nextStart) {
// get comment and leave if next starting position has been reached
Comment comment = this.comments[idx];
commentStart = comment.getStart();
// verify that there's nothing else than white spaces between
// node/comments
if (commentStart >= nextStart) {
// stop search on condition 1)
break;
} else if (previousEnd < commentStart) {
try {
resetTo(previousEnd, commentStart);
this.scanner.next_token();
String token = this.scanner.yytext();
if (token != null && token.trim().length() > 0) {
// stop search on condition 2)
// if first index fails, then there's no extended
// position in fact...
if (idx == startIdx) {
return nodeEnd;
}
// otherwise we get the last index of trailing comment
// => break
break;
}
} catch (Exception e) {
// Should not happen, but return no extended position...
assert false;
return nodeEnd;
}
}
// Store index if we're on the same line than node end
int commentLine = getLineNumber(commentStart, parentLineRange);
if (commentLine == nodeEndLine) {
sameLineIdx = idx;
}
// Store previous infos
previousEnd = commentStart + comment.getLength();
endIdx = idx++;
}
if (endIdx != -1) {
// Verify that following node start is separated
if (!lastChild) {
int nextLine = getLineNumber(nextStart, parentLineRange);
int previousLine = getLineNumber(previousEnd, parentLineRange);
if ((nextLine - previousLine) <= 1) {
if (sameLineIdx == -1) return nodeEnd;
endIdx = sameLineIdx;
}
}
// Store trailing comments indexes
if (++this.trailingPtr == 0) {
this.trailingNodes = new ASTNode[STORAGE_INCREMENT];
this.trailingIndexes = new long[STORAGE_INCREMENT];
this.lastTrailingPtr = -1;
} else if (this.trailingPtr == this.trailingNodes.length) {
int newLength = (this.trailingPtr * 3 / 2) + STORAGE_INCREMENT;
System.arraycopy(
this.trailingNodes,
0,
this.trailingNodes = new ASTNode[newLength],
0,
this.trailingPtr);
System.arraycopy(
this.trailingIndexes,
0,
this.trailingIndexes = new long[newLength],
0,
this.trailingPtr);
}
this.trailingNodes[this.trailingPtr] = node;
long nodeRange = (((long) startIdx) << 32) + endIdx;
this.trailingIndexes[this.trailingPtr] = nodeRange;
// Compute new extended end
extended = this.comments[endIdx].getEnd() - 1;
// Look for children unresolved extended end
ASTNode previousNode = node;
int ptr = this.trailingPtr - 1; // children extended end were stored
// before
while (ptr >= 0) {
long range = this.trailingIndexes[ptr];
if (range != -1) break; // there's no more unresolved nodes
ASTNode unresolved = this.trailingNodes[ptr];
if (previousNode != unresolved.getParent())
break; // we're no longer in node ancestor hierarchy
this.trailingIndexes[ptr] = nodeRange;
previousNode = unresolved;
ptr--; // get previous node
}
// Remove remaining unresolved nodes
if (ptr > this.lastTrailingPtr) {
int offset = ptr - this.lastTrailingPtr;
for (int i = ptr + 1; i <= this.trailingPtr; i++) {
this.trailingNodes[i - offset] = this.trailingNodes[i];
this.trailingIndexes[i - offset] = this.trailingIndexes[i];
}
this.trailingPtr -= offset;
}
this.lastTrailingPtr = this.trailingPtr;
}
return extended;
}
private static boolean checkGlobalIdentifier(ASTNode locateNode) {
// check if it is a GLOBALS['a'] direction
if (locateNode.getType() == ASTNode.SCALAR) {
Scalar scalar = (Scalar) locateNode;
return checkGLOBALS(scalar);
}
// check if it is an identifier
if (locateNode.getType() != ASTNode.IDENTIFIER) {
return false;
}
final Identifier targetIdentifier = ((Identifier) locateNode);
ASTNode parent = locateNode.getParent();
if (parent == null || parent.getType() != ASTNode.VARIABLE) {
return false;
}
final Variable variable = (Variable) parent;
// if it is not a dollared variable - it is not a global one
if (!variable.isDollared() || variable.getParent().getType() == ASTNode.FIELD_DECLARATION) {
return false;
}
// ignore static memeber call
if (parent.getParent().getType() == ASTNode.STATIC_FIELD_ACCESS) {
final StaticFieldAccess staticFieldAccess = (StaticFieldAccess) parent.getParent();
if (staticFieldAccess.getMember() == variable) {
return false;
}
}
if (parent.getParent().getLocationInParent() == FieldsDeclaration.FIELDS_PROPERTY) {
return false;
}
// check if declared global in function
while (parent != null) {
// if the variable was used inside a function
if (parent.getType() == ASTNode.FUNCTION_DECLARATION) {
// global declaration detection
final int end = parent.getEnd();
class GlobalSeacher extends ApplyAll {
public int offset = end;
public boolean apply(ASTNode node) {
if (offset != end) {
return false;
}
if (node.getType() == ASTNode.GLOBAL_STATEMENT) {
GlobalStatement globalStatement = (GlobalStatement) node;
if (checkGlobal(targetIdentifier, globalStatement)) {
offset = globalStatement.getStart();
}
}
return true;
}
}
GlobalSeacher searchGlobal = new GlobalSeacher();
parent.accept(searchGlobal);
return searchGlobal.offset <= targetIdentifier.getStart();
}
parent = parent.getParent();
}
return true;
}
