Swift: create common error test directory

Author: redsun82

swift/ql/lib/codeql/swift/elements/ErrorElement.qll

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+// generated by codegen/codegen.py, remove this comment if you wish to edit this file
+private import codeql.swift.generated.ErrorElement
+
+class ErrorElement extends Generated::ErrorElement { }

swift/ql/lib/codeql/swift/generated/ErrorElement.qll

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+// generated by codegen/codegen.py
+private import codeql.swift.generated.Synth
+private import codeql.swift.generated.Raw
+import codeql.swift.elements.Locatable
+
+module Generated {
+  /**
+   * The superclass of all elements indicating some kind of error.
+   */
+  class ErrorElement extends Synth::TErrorElement, Locatable { }
+}

swift/ql/test/extractor-tests/errors/Errors.expected

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+| file://:0:0:0:0 | (no string representation) | ErrorType |
+| file://:0:0:0:0 | ... .combine(_:) | UnresolvedDotExpr |
+| overloaded.swift:6:5:6:5 | OverloadedDeclRefExpr | OverloadedDeclRefExpr |
+| unresolved.swift:5:1:5:14 | UnresolvedSpecializeExpr | UnresolvedSpecializeExpr |
+| unspecified.swift:3:1:3:23 | missing extended_type_decl from ExtensionDecl | UnspecifiedElement |
+| unspecified.swift:9:9:9:9 | missing fallthrough_dest from FallthroughStmt | UnspecifiedElement |
+| unspecified.swift:9:9:9:9 | missing fallthrough_source from FallthroughStmt | UnspecifiedElement |
+| unspecified.swift:12:18:12:21 | missing element from EnumElementPattern | UnspecifiedElement |
+| unspecified.swift:14:18:14:26 | missing element from EnumElementPattern | UnspecifiedElement |
+| unspecified.swift:19:18:19:19 | missing element from EnumElementPattern | UnspecifiedElement |
+| unspecified.swift:22:13:22:13 | missing fallthrough_dest from FallthroughStmt | UnspecifiedElement |
+| unspecified.swift:22:13:22:13 | missing fallthrough_source from FallthroughStmt | UnspecifiedElement |
+| unspecified.swift:25:16:25:16 | ErrorExpr | ErrorExpr |
+| unspecified.swift:26:18:26:19 | missing element from EnumElementPattern | UnspecifiedElement |

swift/ql/test/extractor-tests/errors/Errors.ql

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+import swift
+
+from Locatable e
+where e instanceof ErrorElement
+select e, e.getPrimaryQlClasses()

swift/ql/test/extractor-tests/errors/UnspecifiedElementParents.expected

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+| unspecified.swift:3:1:3:23 | extension | unspecified.swift:3:1:3:23 | missing extended_type_decl from ExtensionDecl |
+| unspecified.swift:9:9:9:9 | fallthrough | unspecified.swift:9:9:9:9 | missing fallthrough_dest from FallthroughStmt |
+| unspecified.swift:9:9:9:9 | fallthrough | unspecified.swift:9:9:9:9 | missing fallthrough_source from FallthroughStmt |
+| unspecified.swift:12:18:12:21 | (no string representation) | unspecified.swift:12:18:12:21 | missing element from EnumElementPattern |
+| unspecified.swift:14:18:14:26 | (no string representation) | unspecified.swift:14:18:14:26 | missing element from EnumElementPattern |
+| unspecified.swift:19:18:19:19 | (no string representation) | unspecified.swift:19:18:19:19 | missing element from EnumElementPattern |
+| unspecified.swift:22:13:22:13 | fallthrough | unspecified.swift:22:13:22:13 | missing fallthrough_dest from FallthroughStmt |
+| unspecified.swift:22:13:22:13 | fallthrough | unspecified.swift:22:13:22:13 | missing fallthrough_source from FallthroughStmt |
+| unspecified.swift:26:18:26:19 | (no string representation) | unspecified.swift:26:18:26:19 | missing element from EnumElementPattern |

swift/ql/test/extractor-tests/errors/UnspecifiedElementParents.ql

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+import swift
+
+from UnspecifiedElement e, Locatable parent
+where parent = e.getParent()
+select parent, e