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C++: Merge the location tables #17581

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C++: Merge the location tables #17581

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157 changes: 157 additions & 0 deletions cpp/downgrades/42bbf4bb186082ba7a58a02b2b219d92ac902b58/downgrades.ql
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Original file line number Diff line number Diff line change
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class Accessible extends @accessible {
string toString() { none() }
}

class Container extends @container {
string toString() { none() }
}

class Expr extends @expr {
string toString() { none() }
}

class Initialiser extends @initialiser {
string toString() { none() }
}

class Location extends @location_default {
string toString() { none() }
}

class Stmt extends @stmt {
string toString() { none() }
}

predicate isLocationDefault(Location l) {
diagnostics(_, _, _, _, _, l)
or
macroinvocations(_, _, l, _)
or
fun_decls(_, _, _, _, l)
or
var_decls(_, _, _, _, l)
or
type_decls(_, _, l)
or
namespace_decls(_, _, l, _)
or
namespace_decls(_, _, _, l)
or
usings(_, _, l, _)
or
static_asserts(_, _, _, l, _)
or
enumconstants(_, _, _, _, _, l)
or
attributes(_, _, _, _, l)
or
attribute_args(_, _, _, _, l)
or
derivations(_, _, _, _, l)
or
frienddecls(_, _, _, l)
or
comments(_, _, l)
or
namequalifiers(_, _, _, l)
or
lambda_capture(_, _, _, _, _, _, l)
or
preprocdirects(_, _, l)
or
xmllocations(_, l)
}

predicate isLocationExpr(Location l) {
initialisers(_, _, _, l)
or
exprs(_, _, l)
}

predicate isLocationStmt(Location l) { stmts(_, _, l) }

newtype TExprOrStmtLocation =
TExprLocation(Location l, Container c, int startLine, int startColumn, int endLine, int endColumn) {
isLocationExpr(l) and
(isLocationDefault(l) or isLocationStmt(l)) and
locations_default(l, c, startLine, startColumn, endLine, endColumn)
} or
TStmtLocation(Location l, Container c, int startLine, int startColumn, int endLine, int endColumn) {
isLocationStmt(l) and
(isLocationDefault(l) or isLocationExpr(l)) and
locations_default(l, c, startLine, startColumn, endLine, endColumn)
}

module Fresh = QlBuiltins::NewEntity<TExprOrStmtLocation>;

class NewLocationBase = @location_default or Fresh::EntityId;

class NewLocation extends NewLocationBase {
string toString() { none() }
}

query predicate new_locations_default(
NewLocation l, Container c, int startLine, int startColumn, int endLine, int endColumn
) {
isLocationDefault(l) and
locations_default(l, c, startLine, startColumn, endLine, endColumn)
}

query predicate new_locations_expr(
NewLocation l, Container c, int startLine, int startColumn, int endLine, int endColumn
) {
exists(Location l_old |
isLocationExpr(l_old) and
locations_default(l_old, c, startLine, startColumn, endLine, endColumn)
|
if not isLocationDefault(l_old) and not isLocationStmt(l)
then l = l_old
else l = Fresh::map(TExprLocation(l_old, c, startLine, startColumn, endLine, endColumn))
)
}

query predicate new_locations_stmt(
NewLocation l, Container c, int startLine, int startColumn, int endLine, int endColumn
) {
exists(Location l_old |
isLocationStmt(l_old) and
locations_default(l_old, c, startLine, startColumn, endLine, endColumn)
|
if not isLocationDefault(l_old) and not isLocationExpr(l)
then l = l_old
else l = Fresh::map(TStmtLocation(l_old, c, startLine, startColumn, endLine, endColumn))
)
}

query predicate new_exprs(Expr e, int kind, NewLocation l) {
exists(Location l_old, Container c, int startLine, int startColumn, int endLine, int endColumn |
exprs(e, kind, l_old) and
locations_default(l_old, c, startLine, startColumn, endLine, endColumn)
|
if not isLocationDefault(l_old) and not isLocationStmt(l)
then l = l_old
else l = Fresh::map(TExprLocation(l_old, c, startLine, startColumn, endLine, endColumn))
)
}

query predicate new_initialisers(Initialiser i, Accessible v, Expr e, NewLocation l) {
exists(Location l_old, Container c, int startLine, int startColumn, int endLine, int endColumn |
initialisers(i, v, e, l_old) and
locations_default(l_old, c, startLine, startColumn, endLine, endColumn)
|
if not isLocationDefault(l_old) and not isLocationStmt(l)
then l = l_old
else l = Fresh::map(TExprLocation(l_old, c, startLine, startColumn, endLine, endColumn))
)
}

query predicate new_stmts(Stmt s, int kind, NewLocation l) {
exists(Location l_old, Container c, int startLine, int startColumn, int endLine, int endColumn |
stmts(s, kind, l_old) and
locations_default(l_old, c, startLine, startColumn, endLine, endColumn)
|
if not isLocationDefault(l_old) and not isLocationExpr(l)
then l = l_old
else l = Fresh::map(TStmtLocation(l_old, c, startLine, startColumn, endLine, endColumn))
)
}
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