Fix slice location

Author: harupy

parser/python.lalrpop

@@ -1018,7 +1018,7 @@ SubscriptList: ast::Expr = {
 
 Subscript: ast::Expr = {
     Test<"all">,
-    <e1:Test<"all">?> <location:@L> ":" <e2:Test<"all">?> <e3:SliceOp?> <end_location:@R> => {
+    <location:@L> <e1:Test<"all">?> ":" <e2:Test<"all">?> <e3:SliceOp?> <end_location:@R> => {
         let lower = e1.map(Box::new);
         let upper = e2.map(Box::new);
         let step = e3.flatten().map(Box::new);

parser/src/parser.rs

@@ -233,4 +233,11 @@ class Foo(A, B):
         let parse_ast = parse_expression(&source, "<test>").unwrap();
         insta::assert_debug_snapshot!(parse_ast);
     }
+
+    #[test]
+    fn test_slice() {
+        let source = String::from("x[1:2:3]");
+        let parse_ast = parse_expression(&source, "<test>").unwrap();
+        insta::assert_debug_snapshot!(parse_ast);
+    }
 }

parser/src/snapshots/rustpython_parser__parser__tests__slice.snap

@@ -0,0 +1,115 @@
+---
+source: compiler/parser/src/parser.rs
+expression: parse_ast
+---
+Located {
+    location: Location {
+        row: 1,
+        column: 0,
+    },
+    end_location: Some(
+        Location {
+            row: 1,
+            column: 8,
+        },
+    ),
+    custom: (),
+    node: Subscript {
+        value: Located {
+            location: Location {
+                row: 1,
+                column: 0,
+            },
+            end_location: Some(
+                Location {
+                    row: 1,
+                    column: 1,
+                },
+            ),
+            custom: (),
+            node: Name {
+                id: "x",
+                ctx: Load,
+            },
+        },
+        slice: Located {
+            location: Location {
+                row: 1,
+                column: 2,
+            },
+            end_location: Some(
+                Location {
+                    row: 1,
+                    column: 7,
+                },
+            ),
+            custom: (),
+            node: Slice {
+                lower: Some(
+                    Located {
+                        location: Location {
+                            row: 1,
+                            column: 2,
+                        },
+                        end_location: Some(
+                            Location {
+                                row: 1,
+                                column: 3,
+                            },
+                        ),
+                        custom: (),
+                        node: Constant {
+                            value: Int(
+                                1,
+                            ),
+                            kind: None,
+                        },
+                    },
+                ),
+                upper: Some(
+                    Located {
+                        location: Location {
+                            row: 1,
+                            column: 4,
+                        },
+                        end_location: Some(
+                            Location {
+                                row: 1,
+                                column: 5,
+                            },
+                        ),
+                        custom: (),
+                        node: Constant {
+                            value: Int(
+                                2,
+                            ),
+                            kind: None,
+                        },
+                    },
+                ),
+                step: Some(
+                    Located {
+                        location: Location {
+                            row: 1,
+                            column: 6,
+                        },
+                        end_location: Some(
+                            Location {
+                                row: 1,
+                                column: 7,
+                            },
+                        ),
+                        custom: (),
+                        node: Constant {
+                            value: Int(
+                                3,
+                            ),
+                            kind: None,
+                        },
+                    },
+                ),
+            },
+        },
+        ctx: Load,
+    },
+}