go.tools/go/loader: add Config.ParserMode configuration parameter.
Existing tools use the default value of zero; their behaviour is unchanged.
(*Config).ParseFile is used only from tests.
LGTM=crawshaw, rsc, gri
R=crawshaw, gri, rsc
CC=golang-codereviews
https://golang.org/cl/79290044
diff --git a/go/loader/util.go b/go/loader/util.go
index a772f02..df19b7d 100644
--- a/go/loader/util.go
+++ b/go/loader/util.go
@@ -21,7 +21,7 @@
// I/O is done via ctxt, which may specify a virtual file system.
// displayPath is used to transform the filenames attached to the ASTs.
//
-func parseFiles(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, files ...string) ([]*ast.File, error) {
+func parseFiles(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, files []string, mode parser.Mode) ([]*ast.File, error) {
if displayPath == nil {
displayPath = func(path string) string { return path }
}
@@ -56,7 +56,7 @@
errors[i] = err
return
}
- parsed[i], errors[i] = parser.ParseFile(fset, displayPath(file), rd, 0)
+ parsed[i], errors[i] = parser.ParseFile(fset, displayPath(file), rd, mode)
}(i, file)
}
wg.Wait()
