Documentation

Lean.Parser.Do

@[inline]
Equations
Instances For
    Equations
    • One or more equations did not get rendered due to their size.
    Instances For
      Equations
      • One or more equations did not get rendered due to their size.
      Instances For
        Equations
        • One or more equations did not get rendered due to their size.
        Instances For
          Equations
          • One or more equations did not get rendered due to their size.
          Instances For

            A doSeq is a sequence of doElem, the main argument after the do keyword and other do elements that take blocks. It can either have the form "{" (doElem ";"?)* "}" or many1Indent (doElem ";"?), where many1Indent ensures that all the items are at the same or higher indentation level as the first line.

            Equations
            Instances For

              termBeforeDo is defined as withForbidden("do", term), which will parse a term but disallows do outside of a bracketing construct. This is used for parsers like for _ in t do ... or unless t do ..., where we do not want t do ... to be parsed as an application of t to a do block, which would otherwise be allowed.

              Equations
              Instances For
                Equations
                • One or more equations did not get rendered due to their size.
                Instances For
                  Equations
                  • One or more equations did not get rendered due to their size.
                  Instances For
                    Equations
                    • One or more equations did not get rendered due to their size.
                    Instances For
                      Equations
                      • One or more equations did not get rendered due to their size.
                      Instances For
                        Equations
                        • One or more equations did not get rendered due to their size.
                        Instances For
                          Equations
                          • One or more equations did not get rendered due to their size.
                          Instances For
                            Equations
                            • One or more equations did not get rendered due to their size.
                            Instances For
                              Equations
                              • One or more equations did not get rendered due to their size.
                              Instances For
                                Equations
                                • One or more equations did not get rendered due to their size.
                                Instances For
                                  Equations
                                  • One or more equations did not get rendered due to their size.
                                  Instances For
                                    Equations
                                    • One or more equations did not get rendered due to their size.
                                    Instances For
                                      Equations
                                      • One or more equations did not get rendered due to their size.
                                      Instances For
                                        Equations
                                        • One or more equations did not get rendered due to their size.
                                        Instances For
                                          Equations
                                          • One or more equations did not get rendered due to their size.
                                          Instances For
                                            Equations
                                            • One or more equations did not get rendered due to their size.
                                            Instances For
                                              Equations
                                              • One or more equations did not get rendered due to their size.
                                              Instances For
                                                Equations
                                                • One or more equations did not get rendered due to their size.
                                                Instances For
                                                  Equations
                                                  • One or more equations did not get rendered due to their size.
                                                  Instances For
                                                    Equations
                                                    • One or more equations did not get rendered due to their size.
                                                    Instances For
                                                      Equations
                                                      • One or more equations did not get rendered due to their size.
                                                      Instances For

                                                        for x in e do s iterates over e assuming e's type has an instance of the ForIn typeclass. break and continue are supported inside for loops. for x in e, x2 in e2, ... do s iterates of the given collections in parallel, until at least one of them is exhausted. The types of e2 etc. must implement the ToStream typeclass.

                                                        Equations
                                                        • One or more equations did not get rendered due to their size.
                                                        Instances For
                                                          Equations
                                                          • One or more equations did not get rendered due to their size.
                                                          Instances For
                                                            Equations
                                                            • One or more equations did not get rendered due to their size.
                                                            Instances For
                                                              Equations
                                                              • One or more equations did not get rendered due to their size.
                                                              Instances For
                                                                Equations
                                                                • One or more equations did not get rendered due to their size.
                                                                Instances For
                                                                  Equations
                                                                  • One or more equations did not get rendered due to their size.
                                                                  Instances For
                                                                    Equations
                                                                    • One or more equations did not get rendered due to their size.
                                                                    Instances For
                                                                      Equations
                                                                      • One or more equations did not get rendered due to their size.
                                                                      Instances For

                                                                        break exits the surrounding for loop.

                                                                        Equations
                                                                        • One or more equations did not get rendered due to their size.
                                                                        Instances For

                                                                          continue skips to the next iteration of the surrounding for loop.

                                                                          Equations
                                                                          • One or more equations did not get rendered due to their size.
                                                                          Instances For

                                                                            return e inside of a do block makes the surrounding block evaluate to pure e, skipping any further statements. Note that uses of the do keyword in other syntax like in for _ in _ do do not constitute a surrounding block in this sense; in supported editors, the corresponding do keyword of the surrounding block is highlighted when hovering over return.

                                                                            return not followed by a term starting on the same line is equivalent to return ().

                                                                            Equations
                                                                            • One or more equations did not get rendered due to their size.
                                                                            Instances For

                                                                              dbg_trace e prints e (which can be an interpolated string literal) to stderr. It should only be used for debugging.

                                                                              Equations
                                                                              • One or more equations did not get rendered due to their size.
                                                                              Instances For

                                                                                assert! cond panics if cond evaluates to false.

                                                                                Equations
                                                                                • One or more equations did not get rendered due to their size.
                                                                                Instances For
                                                                                  Equations
                                                                                  • One or more equations did not get rendered due to their size.
                                                                                  Instances For
                                                                                    Equations
                                                                                    • One or more equations did not get rendered due to their size.
                                                                                    Instances For
                                                                                      Equations
                                                                                      • One or more equations did not get rendered due to their size.
                                                                                      Instances For

                                                                                        unless e do s is a nicer way to write if !e do s.

                                                                                        Equations
                                                                                        • One or more equations did not get rendered due to their size.
                                                                                        Instances For
                                                                                          Equations
                                                                                          • One or more equations did not get rendered due to their size.
                                                                                          Instances For
                                                                                            Equations
                                                                                            • One or more equations did not get rendered due to their size.
                                                                                            Instances For

                                                                                              return used outside of do blocks creates an implicit block around it and thus is equivalent to pure e, but helps with avoiding parentheses.

                                                                                              Equations
                                                                                              • One or more equations did not get rendered due to their size.
                                                                                              Instances For