Merge pull request #78 from github/rasmuswl/syntax-error-query

ql/src/Debug/SyntaxError.ql

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+/**
+ * @name Syntax error
+ * @description A piece of code could not be parsed due to syntax errors.
+ * @kind problem
+ * @problem.severity recommendation
+ * @id actions/syntax-error
+ * @tags reliability
+ *       correctness
+ *       language-features
+ *       debug
+ * @precision very-high
+ */
+
+private import codeql.actions.ast.internal.Yaml
+
+from YamlParseError pe
+select pe, pe.getMessage()

ql/test/query-tests/SyntaxError/.github/workflows/malformed.yml

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+on: pull_request_target
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+   - run: echo ${{ github.event.pull_request.body}}

ql/test/query-tests/SyntaxError/SyntaxError.expected

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+| .github/workflows/malformed.yml:7:4:7:4 | expected <block end>, but found '<block sequence start>' | expected <block end>, but found '<block sequence start>' |

ql/test/query-tests/SyntaxError/SyntaxError.qlref

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+Debug/SyntaxError.ql

ql/test/query-tests/SyntaxError/options

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+semmle-extractor-options: --tolerate-parse-errors --experimental