Add language support for sway (#6023)

1 files changed, 71 insertions, 0 deletions

diff --git a/runtime/queries/sway/indents.scm b/runtime/queries/sway/indents.scm
new file mode 100644
index 00000000..e6902b62
--- /dev/null
+++ b/runtime/queries/sway/indents.scm
@@ -0,0 +1,71 @@
+[
+  (use_list)
+  (block)
+  (match_block)
+  (arguments)
+  (parameters)
+  (declaration_list)
+  (field_declaration_list)
+  (field_initializer_list)
+  (struct_pattern)
+  (tuple_pattern)
+  (unit_expression)
+  (enum_variant_list)
+  (call_expression)
+  (binary_expression)
+  (field_expression)
+  (tuple_expression)
+  (array_expression)
+  (where_clause)
+
+  (token_tree)
+] @indent
+
+[
+  "}"
+  "]"
+  ")"
+] @outdent
+
+; Indent the right side of assignments.
+; The #not-same-line? predicate is required to prevent an extra indent for e.g.
+; an else-clause where the previous if-clause starts on the same line as the assignment.
+(assignment_expression
+  .
+  (_) @expr-start
+  right: (_) @indent
+  (#not-same-line? @indent @expr-start)
+  (#set! "scope" "all")
+)
+(compound_assignment_expr
+  .
+  (_) @expr-start
+  right: (_) @indent
+  (#not-same-line? @indent @expr-start)
+  (#set! "scope" "all")
+)
+(let_declaration
+  .
+  (_) @expr-start
+  value: (_) @indent
+  alternative: (_)? @indent
+  (#not-same-line? @indent @expr-start)
+  (#set! "scope" "all")
+)
+(if_expression
+  .
+  (_) @expr-start
+  condition: (_) @indent
+  (#not-same-line? @indent @expr-start)
+  (#set! "scope" "all")
+)
+
+; Some field expressions where the left part is a multiline expression are not
+; indented by cargo fmt.
+; Because this multiline expression might be nested in an arbitrary number of
+; field expressions, this can only be matched using a Regex.
+(field_expression
+  value: (_) @val
+  "." @outdent
+  (#match? @val "(\\A[^\\n\\r]+\\([\\t ]*(\\n|\\r).*)|(\\A[^\\n\\r]*\\{[\\t ]*(\\n|\\r))")
+)