Allow node-space after slashdash and add a bunch more slashdash tests (#427)

Fixes: https://github.com/kdl-org/kdl/issues/426

SPEC.md

@@ -905,7 +905,7 @@ unicode-space := See Table (All White_Space unicode characters which are not `ne
 single-line-comment := '//' ^newline* (newline | eof)
 multi-line-comment := '/*' commented-block
 commented-block := '*/' | (multi-line-comment | '*' | '/' | [^*/]+) commented-block
-slashdash := '/-' line-space*
+slashdash := '/-' (node-space | line-space)*
 
 // Whitespace
 ws := unicode-space | multi-line-comment

tests/test_cases/expected_kdl/slashdash_escline_before_arg_type.kdl

@@ -0,0 +1 @@
+node arg2

tests/test_cases/expected_kdl/slashdash_escline_before_children.kdl

@@ -0,0 +1 @@
+node arg1

tests/test_cases/expected_kdl/slashdash_escline_before_node.kdl

@@ -0,0 +1 @@
+node2

tests/test_cases/expected_kdl/slashdash_false_node.kdl

@@ -0,0 +1 @@
+node foo bar

tests/test_cases/input/slashdash_after_arg_type_fail.kdl

@@ -0,0 +1 @@
+node (ty)/-arg1 arg2

tests/test_cases/input/slashdash_after_node_type_fail.kdl

@@ -0,0 +1,2 @@
+(ty)/-node
+other-node

tests/test_cases/input/slashdash_after_prop_val_type_fail.kdl

@@ -0,0 +1 @@
+node key=(ty)/-val other-arg

tests/test_cases/input/slashdash_before_children_end_fail.kdl

@@ -0,0 +1,4 @@
+node {
+    child1
+    /-
+}

tests/test_cases/input/slashdash_before_eof_fail.kdl

@@ -0,0 +1 @@
+node foo /-

tests/test_cases/input/slashdash_before_prop_value_fail.kdl

@@ -0,0 +1 @@
+node key = /-val etc

tests/test_cases/input/slashdash_before_semicolon_fail.kdl

@@ -0,0 +1 @@
+node foo /-;

tests/test_cases/input/slashdash_escline_before_arg_type.kdl

@@ -0,0 +1,2 @@
+node /-\
+(ty)arg1 arg2

tests/test_cases/input/slashdash_escline_before_children.kdl

@@ -0,0 +1,3 @@
+node arg1 /-\
+{
+}

tests/test_cases/input/slashdash_escline_before_node.kdl

@@ -0,0 +1,3 @@
+/-\
+node1
+node2

tests/test_cases/input/slashdash_false_node.kdl

@@ -0,0 +1,2 @@
+node foo /-
+not-a-node bar

tests/test_cases/input/slashdash_inside_arg_type_fail.kdl

@@ -0,0 +1 @@
+node (/-bad)nope

tests/test_cases/input/slashdash_inside_node_type_fail.kdl

@@ -0,0 +1 @@
+(/-ty)node