[libclang] Introduce clang_getPresumedLocation which works like clang_getExpansionLocation
but takes into account #line directives coming from preprocessed files.
Patch by Vinay Sajip!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139647 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang-c/Index.h b/include/clang-c/Index.h
index f54bd08..07bcf9e 100644
--- a/include/clang-c/Index.h
+++ b/include/clang-c/Index.h
@@ -364,6 +364,49 @@
unsigned *offset);
/**
+ * \brief Retrieve the file, line, column, and offset represented by
+ * the given source location, as specified in a # line directive.
+ *
+ * Example: given the following source code in a file somefile.c
+ *
+ * #123 "dummy.c" 1
+ *
+ * static int func(void)
+ * {
+ * return 0;
+ * }
+ *
+ * the location information returned by this function would be
+ *
+ * File: dummy.c Line: 124 Column: 12
+ *
+ * whereas clang_getExpansionLocation would have returned
+ *
+ * File: somefile.c Line: 3 Column: 12
+ *
+ * \param location the location within a source file that will be decomposed
+ * into its parts.
+ *
+ * \param filename [out] if non-NULL, will be set to the filename of the
+ * source location. Note that filenames returned will be for "virtual" files,
+ * which don't necessarily exist on the machine running clang - e.g. when
+ * parsing preprocessed output obtained from a different environment. If
+ * a non-NULL value is passed in, remember to dispose of the returned value
+ * using \c clang_disposeString() once you've finished with it. For an invalid
+ * source location, an empty string is returned.
+ *
+ * \param line [out] if non-NULL, will be set to the line number of the
+ * source location. For an invalid source location, zero is returned.
+ *
+ * \param column [out] if non-NULL, will be set to the column number of the
+ * source location. For an invalid source location, zero is returned.
+ */
+CINDEX_LINKAGE void clang_getPresumedLocation(CXSourceLocation location,
+ CXString *filename,
+ unsigned *line,
+ unsigned *column);
+
+/**
* \brief Legacy API to retrieve the file, line, column, and offset represented
* by the given source location.
*
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 2f8db5d..51749d7 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -2861,6 +2861,34 @@
*offset = SM.getDecomposedLoc(ExpansionLoc).second;
}
+void clang_getPresumedLocation(CXSourceLocation location,
+ CXString *filename,
+ unsigned *line,
+ unsigned *column) {
+ SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
+
+ if (!location.ptr_data[0] || Loc.isInvalid()) {
+ if (filename)
+ *filename = createCXString("");
+ if (line)
+ *line = 0;
+ if (column)
+ *column = 0;
+ }
+ else {
+ const SourceManager &SM =
+ *static_cast<const SourceManager*>(location.ptr_data[0]);
+ PresumedLoc PreLoc = SM.getPresumedLoc(Loc);
+
+ if (filename)
+ *filename = createCXString(PreLoc.getFilename());
+ if (line)
+ *line = PreLoc.getLine();
+ if (column)
+ *column = PreLoc.getColumn();
+ }
+}
+
void clang_getInstantiationLocation(CXSourceLocation location,
CXFile *file,
unsigned *line,
diff --git a/tools/libclang/libclang.darwin.exports b/tools/libclang/libclang.darwin.exports
index a858f62..21ef35b 100644
--- a/tools/libclang/libclang.darwin.exports
+++ b/tools/libclang/libclang.darwin.exports
@@ -102,6 +102,7 @@
_clang_getOverloadedDecl
_clang_getOverriddenCursors
_clang_getPointeeType
+_clang_getPresumedLocation
_clang_getRange
_clang_getRangeEnd
_clang_getRangeStart
diff --git a/tools/libclang/libclang.exports b/tools/libclang/libclang.exports
index 85e9f02..ea7aaf0 100644
--- a/tools/libclang/libclang.exports
+++ b/tools/libclang/libclang.exports
@@ -102,6 +102,7 @@
clang_getOverloadedDecl
clang_getOverriddenCursors
clang_getPointeeType
+clang_getPresumedLocation
clang_getRange
clang_getRangeEnd
clang_getRangeStart