fix validation

parser/parser.go

@@ -481,7 +481,11 @@ func (p *parser) parseMappingValue(ctx *context) (ast.Node, error) {
 		ntk = p.nextNotCommentToken()
 		antk = p.afterNextNotCommentToken()
 	}
-	if tk := p.nextNotCommentToken(); tk != nil && tk.Position.Line > node.Start.Position.Line && tk.Position.Column > node.Start.Position.Column {
+	validationTk := node.Start
+	if len(node.Values) != 0 {
+		validationTk = node.Values[len(node.Values)-1].Key.GetToken()
+	}
+	if tk := p.nextNotCommentToken(); tk != nil && tk.Position.Line > validationTk.Position.Line && tk.Position.Column > validationTk.Position.Column {
 		// a: b
 		//   c <= this token is invalid.
 		return nil, errors.ErrSyntax("value is not allowed in this context", tk)

parser/parser_test.go

@@ -608,6 +608,20 @@ i: 'j'
 "e": "f"
 g: "h"
 i: 'j'
+`,
+		},
+		{
+			`
+a:
+  - |2
+        b
+    c: d
+`,
+			`
+a:
+  - |2
+        b
+    c: d
 `,
 		},
 	}
@@ -1165,6 +1179,39 @@ b: - 2
          ^
 `,
 		},
+		{
+			`
+a:
+  - |
+        b
+    c: d
+`,
+			`
+[5:5] value is not allowed in this context
+   2 | a:
+   3 |   - |
+   4 |         b
+>  5 |     c: d
+           ^
+`,
+		},
+		{
+			`
+a:
+  - |
+        b
+    c:
+      d: e
+`,
+			`
+[5:5] value is not allowed in this context
+   2 | a:
+   3 |   - |
+   4 |         b
+>  5 |     c:
+           ^
+   6 |       d: e`,
+		},
 	}
 	for _, test := range tests {
 		t.Run(test.source, func(t *testing.T) {

scanner/scanner.go

@@ -571,6 +571,9 @@ func (s *Scanner) scanDocument(ctx *Context, c rune) error {
 		s.progressColumn(ctx, 1)
 	} else {
 		ctx.updateDocumentLineIndentColumn(s.column)
+		if ctx.docFirstLineIndentColumn > 0 {
+			s.lastDelimColumn = ctx.docFirstLineIndentColumn - 1
+		}
 		if err := ctx.validateDocumentLineIndentColumn(); err != nil {
 			invalidTk := token.Invalid(string(ctx.obuf), s.pos())
 			s.progressColumn(ctx, 1)

testdata/validate_test.go

@@ -117,21 +117,21 @@ name: myDocument
 roles:
   name: myRole
   permissions:
-	- hello
-	- how
-	- are
-	- you
-	`,
+    - hello
+    - how
+    - are
+    - you
+`,
 			ExpectedErr: `[4:7] mapping was used where sequence is expected
    1 | ---
    2 | name: myDocument
    3 | roles:
 >  4 |   name: myRole
              ^
    5 |   permissions:
-   6 | 	- hello
-   7 | 	- how
-   8 | `,
+   6 |     - hello
+   7 |     - how
+   8 |     `,
 			Instance: &struct {
 				Name  string `yaml:"name"`
 				Roles []struct {