Wasm: expose sqlite3_exec() and use it to simplify the db-reset logic in batch-runner.js a bit.

FossilOrigin-Name: 2e2821f782511b9d2274a89a5a922582aba18c7e9dc7ce01080e713942a56d7d

ext/wasm/api/sqlite3-api-prologue.js

@@ -611,9 +611,10 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
     ["sqlite3_errmsg", "string", "sqlite3*"],
     ["sqlite3_error_offset", "int", "sqlite3*"],
     ["sqlite3_errstr", "string", "int"],
-    //["sqlite3_exec", "int", "sqlite3*", "string", "*", "*", "**"],
+    ["sqlite3_exec", "int", "sqlite3*", "string", "*", "*", "**"],
-    // ^^^ TODO: we need a wrapper to support passing a function pointer or a function
+    // TODO?: ^^^ add a wrapper around sqlite3_exec() which accepts a
-    // for the callback.
+    // JS callback function and handles the (un)installation of that
+    // function before/after the exec call.
     ["sqlite3_expanded_sql", "string", "sqlite3_stmt*"],
     ["sqlite3_extended_errcode", "int", "sqlite3*"],
     ["sqlite3_extended_result_codes", "int", "sqlite3*", "int"],

ext/wasm/batch-runner.js

@@ -67,8 +67,9 @@
     const capi = sqlite3.capi, wasm = capi.wasm;
     const scope = wasm.scopedAllocPush();
     try {
-      const toDrop = [];
+      const toDrop = [/* type, name pairs */];
       const ppStmt = wasm.scopedAllocPtr();
+      // Collect list of tables/etc we can drop...
       let rc = capi.sqlite3_prepare_v2(db.handle, sqlToDrop, -1, ppStmt, null);
       checkSqliteRc(db.handle,rc);
       pStmt = wasm.getPtrValue(ppStmt);
@@ -78,34 +79,31 @@
       }
       capi.sqlite3_finalize(pStmt);
       pStmt = 0;
-      let doBreak = !toDrop.length;
+      // Build SQL to delete them...
-      while(!doBreak){
+      const sqlDrop = [];
+      const doDrop = 0!==toDrop.length;
+      while(doDrop){
         const name = toDrop.pop();
-        const type = toDrop.pop();
-        let sql2;
         if(name){
+          const type = toDrop.pop();
           switch(type){
               case 'table': case 'view': case 'trigger': case 'index':
-                sql2 = 'DROP '+type+' '+name;
+                sqlDrop.push('DROP '+type+' '+name);
                 break;
               default:
                 warn("Unhandled db entry type:",type,name);
                 continue;
           }
         }else{
-          sql2 = "VACUUM";
+          sqlDrop.push("VACUUM");
-          doBreak = true;
           break;
         }
-        wasm.setPtrValue(ppStmt, 0);
+      }
-        warn(db.id,':',sql2);
+      if(sqlDrop.length){
-        rc = capi.sqlite3_prepare_v2(db.handle, sql2, -1, ppStmt, null);
+        const sqlClean = sqlDrop.join(';\n');
-        checkSqliteRc(db.handle,rc);
+        console.log("Cleaning up",db.id,":",sqlClean);
-        pStmt = wasm.getPtrValue(ppStmt);
+        capi.sqlite3_exec(db.handle, sqlClean, 0, 0, 0);
-        capi.sqlite3_step(pStmt);
+      }
-        capi.sqlite3_finalize(pStmt);
-        pStmt = 0;
-      }        
     }finally{
       if(pStmt) capi.sqlite3_finalize(pStmt);
       wasm.scopedAllocPop(scope);

manifest

@@ -1,5 +1,5 @@
-C More\swork\son\sbatch-runner.html/js\sto\sfacilitate\sspeed\scomparisons\sbetween\svarious\sVFSes\sand\sWebSQL.
+C Wasm:\sexpose\ssqlite3_exec()\sand\suse\sit\sto\ssimplify\sthe\sdb-reset\slogic\sin\sbatch-runner.js\sa\sbit.
-D 2022-09-28T17:52:52.224
+D 2022-09-28T18:10:50.148
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -485,12 +485,12 @@ F ext/wasm/api/sqlite3-api-cleanup.js 4bd28e61216690b12d6f77bfce71b011995c294963
 F ext/wasm/api/sqlite3-api-glue.js 3b164f0ef690a838da8613a2aaec4fc49d29ad5e8fe39c8cdc0f5281f08f9d0b
 F ext/wasm/api/sqlite3-api-oo1.js 97a786b366fcac442e1557c3eedef3afa96877411bd6239094d4db5fd5b3c353
 F ext/wasm/api/sqlite3-api-opfs.js af65e056b9f5bc6182499f7e7767e3d01abc3772a62c8abbcc04e4c7bb0affc6
-F ext/wasm/api/sqlite3-api-prologue.js 2a0dedb8127e8983d3199edea55151a45186b462646cb1f2206587ac1ef4eddf
+F ext/wasm/api/sqlite3-api-prologue.js ed850804d5cd7a976717e524d719b1f9743405226a879a5170f259dbee31d13c
 F ext/wasm/api/sqlite3-api-worker1.js d5d5b7fac4c4731c38c7e03f4f404b2a95c388a2a1d8bcf361caada572f107e0
 F ext/wasm/api/sqlite3-wasi.h 25356084cfe0d40458a902afb465df8c21fc4152c1d0a59b563a3fba59a068f9
 F ext/wasm/api/sqlite3-wasm.c b756b9c1fee9d0598f715e6df6bf089b750da24aa91bb7ef9277a037d81e7612
 F ext/wasm/batch-runner.html c363032aba7a525920f61f8be112a29459f73f07e46f0ba3b7730081a617826e
-F ext/wasm/batch-runner.js 756528ff41c0a2d81607fe82d088f305c379279cc84661c9422a7993b3ac544d
+F ext/wasm/batch-runner.js 0d5517be51290098bf4a92754e25c552b7c1dc73bb3f2e2b18f16b1008df060f
 F ext/wasm/common/SqliteTestUtil.js c997c12188c97109f344701a58dd627b9c0f98f32cc6a88413f6171f2191531c
 F ext/wasm/common/emscripten.css 3d253a6fdb8983a2ac983855bfbdd4b6fa1ff267c28d69513dd6ef1f289ada3f
 F ext/wasm/common/testing.css 3a5143699c2b73a85b962271e1a9b3241b30d90e30d895e4f55665e648572962
@@ -2026,8 +2026,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P bbfcfba260f39a9c91e82d87e06b1c2cb297c03498b4530aa3e7e01ef9916012
+P 3bd1bc240676e56da87fc49f3c67a1edc4fafcf2a2416298d19ae4f80b676a72
-R 0e9f94b500e19b6ceb4224cc315ebb8b
+R d0708515df8e5293032059e504723b7d
 U stephan
-Z cfbdefed825643b9f5c5b839e4caa73f
+Z 774d17030f6b3ac9dea357109e6b49c9
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-3bd1bc240676e56da87fc49f3c67a1edc4fafcf2a2416298d19ae4f80b676a72
+2e2821f782511b9d2274a89a5a922582aba18c7e9dc7ce01080e713942a56d7d