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//: Once all code is loaded, save operation ids of instructions and check that
//: nothing's undefined.

:(before "End Instruction Modifying Transforms")
Transform.push_back(update_instruction_operations);  // idempotent

:(code)
void update_instruction_operations(const recipe_ordinal r) {
  trace(9991, "transform") << "--- compute instruction operations for recipe " << get(Recipe, r).name << end();
  recipe& caller = get(Recipe, r);
//?   cerr << "--- compute instruction operations for recipe " << caller.name << '\n';
  for (int index = 0;  index < SIZE(caller.steps);  ++index) {
    instruction& inst = caller.steps.at(index);
    if (inst.is_label) continue;
    if (!contains_key(Recipe_ordinal, inst.name)) {
      raise << maybe(caller.name) << "instruction '" << inst.name << "' has no recipe in '" << to_original_string(inst) << "'\n" << end();
      continue;
    }
    inst.operation = get(Recipe_ordinal, inst.name);
    // End Instruction Operation Checks
  }
}

// hook to suppress inserting recipe name into errors
string maybe(string recipe_name) {
  // End maybe(recipe_name) Special-cases
  return recipe_name + ": ";
}

:(scenarios transform)
:(scenario missing_arrow)
% Hide_errors = true;
def main [
  1:number , copy 0  # typo: ',' instead of '<-'
]
+error: main: instruction '1:number' has no recipe in '1:number copy, 0'
Morrison <ben@gbmor.dev> 2019-05-12 04:06:35 -0400 committer Ben Morrison <ben@gbmor.dev> 2019-05-12 04:06:35 -0400 commented some' href='/gbmor/getwtxt/commit/main.go?h=v0.4.15&id=bd5e602dc1d7dcef03a2d0a01f3f03e1f27c06a0'>bd5e602 ^
c87acad ^
747f4fb ^
06cffd8 ^
c87acad ^


893123c ^
bd23ef0 ^
c87acad ^
6c1b09b ^
bd5e602 ^
d083ce6 ^
893123c ^
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package svc // import "github.com/getwtxt/getwtxt/svc"

import (
	"fmt"
	"log"
	"net/http"
	"time"

	"github.com/gorilla/handlers"
	"github.com/gorilla/mux"
)

// Start is the initialization function for getwtxt
func Start() {
	initSvc()

	// StrictSlash(true) allows /api and /api/
	// to serve the same content without duplicating
	// handlers/paths
	index := mux.NewRouter().StrictSlash(true)
	api := index.PathPrefix("/api").Subrouter()

	index.Path("/").
		Methods("GET", "HEAD").
		HandlerFunc(indexHandler)

	index.Path("/css").
		Methods("GET", "HEAD").
		HandlerFunc(cssHandler)

	index.Path("/api").
		Methods("GET", "HEAD").
		HandlerFunc(apiBaseHandler)

	// twtxt will add support for other formats later.
	// Maybe json? Making this future-proof.
	api.Path("/{format:(?:plain)}").
		Methods("GET", "HEAD").
		HandlerFunc(apiFormatHandler)

	// Non-standard API call to list *all* tweets
	// in a single request.
	api.Path("/{format:(?:plain)}/tweets/all").
		Methods("GET", "HEAD").
		HandlerFunc(apiAllTweetsHandler)

	// Specifying the endpoint with and without query information.
	// Will return 404 on empty queries otherwise.
	api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}").
		Methods("GET", "HEAD").
		HandlerFunc(apiEndpointHandler)

	api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}").
		Queries("url", "{url}", "q", "{query}", "page", "{[0-9]+}").
		Methods("GET", "HEAD").
		HandlerFunc(apiEndpointHandler)

	// This is for submitting new users. Both query variables must exist
	// in the request for this to match.
	api.Path("/{format:(?:plain)}/{endpoint:users}").
		Queries("url", "{url}", "nickname", "{nickname:[a-zA-Z0-9_-]+}").
		Methods("POST").
		HandlerFunc(apiEndpointPOSTHandler)

	// This is for submitting new users incorrectly
	// and letting the requester know about their error.
	api.Path("/{format:(?:plain)}/{endpoint:users}").
		Queries("url", "{url}").
		Methods("POST").
		HandlerFunc(apiEndpointPOSTHandler)

	// This is also for submitting new users incorrectly
	// and letting the requester know about their error.
	api.Path("/{format:(?:plain)}/{endpoint:users}").
		Queries("nickname", "{nickname:[a-zA-Z0-9_-]+}").
		Methods("POST").
		HandlerFunc(apiEndpointPOSTHandler)

	// Show all observed tags
	api.Path("/{format:(?:plain)}/tags").
		Methods("GET", "HEAD").
		HandlerFunc(apiTagsBaseHandler)

	// Show Nth page of all observed tags
	api.Path("/{format:(?:plain)}/tags").
		Queries("page", "{[0-9]+}").
		Methods("GET", "HEAD").
		HandlerFunc(apiTagsBaseHandler)

	// Requests statuses with a specific tag
	api.Path("/{format:(?:plain)}/tags/{tags:[a-zA-Z0-9_-]+}").
		Methods("GET", "HEAD").
		HandlerFunc(apiTagsHandler)

	// Requests Nth page of statuses with a specific tag
	api.Path("/{format:(?:plain)}/tags/{tags:[a-zA-Z0-9_-]+}").
		Queries("page", "{[0-9]+}").
		Methods("GET", "HEAD").
		HandlerFunc(apiTagsHandler)

	confObj.Mu.RLock()
	portnum := fmt.Sprintf(":%v", confObj.Port)
	confObj.Mu.RUnlock()

	// handlers.CompressHandler gzips all responses.
	// Write/Read timeouts are self explanatory.
	server := &http.Server{
		Handler:      handlers.CompressHandler(ipMiddleware(index)),
		Addr:         portnum,
		WriteTimeout: 15 * time.Second,
		ReadTimeout:  15 * time.Second,
	}

	log.Printf("Listening on %v\n", portnum)
	err := server.ListenAndServe()
	errLog("", err)

	closeLog <- true
}