ACCEPT: Implement in terms of KEY

src/standard-testsuite/core.f

@@ -971,17 +971,17 @@ T{ OUTPUT-TEST -> }T
 
 \ ------------------------------------------------------------------------
 \ TESTING INPUT: ACCEPT
-\ 
+
-\ CREATE ABUF 50 CHARS ALLOT
+CREATE ABUF 50 CHARS ALLOT
-\ 
+
-\ : ACCEPT-TEST
+: ACCEPT-TEST
-\    CR ." PLEASE TYPE UP TO 80 CHARACTERS:" CR
+   CR ." PLEASE TYPE UP TO 80 CHARACTERS:" CR
-\    ABUF 50 ACCEPT
+   ABUF 50 ACCEPT
-\    CR ." RECEIVED: " [CHAR] " EMIT
+   CR ." RECEIVED: " [CHAR] " EMIT
-\    ABUF SWAP TYPE [CHAR] " EMIT CR
+   ABUF SWAP TYPE [CHAR] " EMIT CR
-\ ;
+;
-\ 
+
-\ T{ ACCEPT-TEST -> }T
+T{ ACCEPT-TEST -> }T
 
 \ ------------------------------------------------------------------------
 TESTING DICTIONARY SEARCH RULES

src/waforth.wat

@@ -15,8 +15,6 @@
   (import "shell" "emit" (func $shell_emit (param i32)))
   (import "shell" "getc" (func $shell_getc (result i32)))
   (import "shell" "key" (func $shell_key (result i32)))
-  (import "shell" "accept" (func $shell_accept (param i32) (param i32) (result i32)))
-  ;; (import "shell" "debug" (func $shell_debug (param i32)))
 
   ;; Load a webassembly module.
   ;; Parameters: memory offset, size, table index where the new module will
@@ -712,9 +710,23 @@
   (func $ACCEPT (param $tos i32) (result i32)
     (local $btos i32)
     (local $bbtos i32)
-    (i32.store (local.tee $bbtos (i32.sub (local.get $tos) (i32.const 8)))
+    (local $addr i32)
-                (call $shell_accept (i32.load (local.get $bbtos))
+    (local $p i32)
-                                    (i32.load (local.tee $btos (i32.sub (local.get $tos) (i32.const 4))))))
+    (local $endp i32)
+    (local $c i32)
+    (local.set $endp 
+      (i32.add 
+        (local.tee $addr (i32.load (local.tee $bbtos (i32.sub (local.get $tos) (i32.const 8)))))
+        (i32.load (local.tee $btos (i32.sub (local.get $tos) (i32.const 4))))))
+    (local.set $p (local.get $addr))
+    (block $endLoop
+      (loop $loop
+        (br_if $endLoop (i32.eq (local.tee $c (call $shell_key)) (i32.const 0xa)))
+        (i32.store8 (local.get $p) (local.get $c))
+        (local.set $p (i32.add (local.get $p) (i32.const 1)))
+        (call $shell_emit (local.get $c))
+        (br_if $loop (i32.lt_u (local.get $p) (local.get $endp)))))
+    (i32.store (local.get $bbtos)  (i32.sub (local.get $p) (local.get $addr)))
     (local.get $btos))
   (data (i32.const 135744) "4\12\02\00" "\06" "ACCEPT\00" "<\00\00\00")
   (elem (i32.const 0x3c) $ACCEPT)

src/web/tests/suite.js

@@ -14,6 +14,14 @@ function loadTests() {
         output = output + c;
         // console.log(output);
       };
+      let k = 0;
+      const keyString =
+        "abcdefghijklmnopqrstuvwxyz1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+      forth.key = () => {
+        const c = keyString.charCodeAt(k);
+        k = (k + 1) % keyString.length;
+        return c;
+      };
       const x = forth.load().then(
         () => {
           core = forth.core.exports;
@@ -1576,6 +1584,9 @@ function loadTests() {
           "YOU SHOULD SEE THE NUMBER RANGES OF SIGNED AND UNSIGNED NUMBERS:\n  SIGNED: -80000000 7FFFFFFF \n"
         );
         expect(output).to.include("UNSIGNED: 0 FFFFFFFF \n");
+        expect(output).to.include(
+          `RECEIVED: "abcdefghijklmnopqrstuvwxyz1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqr"\n`
+        );
       });
     });
   });

src/web/waforth.ts

@@ -55,6 +55,7 @@ class WAForth {
    * `c` is the ASCII code of the character to be emitted.
    */
   onEmit?: (c: string) => void;
+  key: () => number;
 
   constructor() {
     this.#fns = {};
@@ -70,6 +71,21 @@ class WAForth {
         }
       };
     })();
+
+    const keyBuffer: string[] = [];
+    this.key = () => {
+      while (keyBuffer.length === 0) {
+        const c = window.prompt("Enter text");
+        if (c == null) {
+          continue;
+        }
+        keyBuffer.push(...c.split(""));
+        if (c.length === 0 || c.length > 1) {
+          keyBuffer.push("\n");
+        }
+      }
+      return keyBuffer.shift()!.charCodeAt(0);
+    };
   }
 
   /**
@@ -101,26 +117,8 @@ class WAForth {
           return buffer.pop();
         },
 
-        debug: (d: number) => {
-          console.log("DEBUG: ", d, String.fromCharCode(d));
-        },
-
         key: () => {
-          let c: string | null = null;
+          return this.key();
-          while (c == null || c == "") {
-            c = window.prompt("Enter character");
-          }
-          return c.charCodeAt(0);
-        },
-
-        accept: (p: number, n: number) => {
-          const input = (window.prompt("Enter text") || "").substring(0, n);
-          const target = new Uint8Array(memory.buffer, p, input.length);
-          for (let i = 0; i < input.length; ++i) {
-            target[i] = input.charCodeAt(i);
-          }
-          console.log("ACCEPT", p, n, input.length);
-          return input.length;
         },
 
         ////////////////////////////////////////