feat(parse): add ArrayReader, update pkg info

packages/parse/package.json

@@ -20,7 +20,7 @@
         "build:test": "rimraf build && tsc -p test/tsconfig.json",
         "test": "mocha test",
         "cover": "nyc mocha test && nyc report --reporter=lcov",
-        "clean": "rimraf *.js *.d.ts *.map .nyc_output build coverage doc lib combinators prims xform",
+        "clean": "rimraf *.js *.d.ts *.map .nyc_output build coverage doc lib combinators presets prims readers xform",
         "doc:readme": "ts-node -P ../../tools/tsconfig.json ../../tools/src/readme.ts",
         "doc:ae": "mkdir -p .ae/doc .ae/temp && node_modules/.bin/api-extractor run --local --verbose",
         "doc": "node_modules/.bin/typedoc --mode modules --out doc src",
@@ -47,7 +47,9 @@
         "*.d.ts",
         "lib",
         "combinators",
+        "presets",
         "prims",
+        "readers",
         "xform"
     ],
     "keywords": [

packages/parse/src/index.ts

@@ -1,7 +1,6 @@
 export * from "./api";
 export * from "./context";
 export * from "./error";
-export * from "./string-reader";
 
 export * from "./combinators/alt";
 export * from "./combinators/check";
@@ -16,6 +15,11 @@ export * from "./combinators/repeat";
 export * from "./combinators/seq";
 export * from "./combinators/xform";
 
+export * from "./presets/alpha";
+export * from "./presets/digits";
+export * from "./presets/numbers";
+export * from "./presets/whitespace";
+
 export * from "./prims/always";
 export * from "./prims/anchor";
 export * from "./prims/lift";
@@ -26,13 +30,11 @@ export * from "./prims/range";
 export * from "./prims/satisfy";
 export * from "./prims/string";
 
+export * from "./readers/array-reader";
+export * from "./readers/string-reader";
+
 export * from "./xform/collect";
 export * from "./xform/comp";
 export * from "./xform/number";
 export * from "./xform/merge";
 export * from "./xform/print";
-
-export * from "./presets/alpha";
-export * from "./presets/digits";
-export * from "./presets/numbers";
-export * from "./presets/whitespace";

packages/parse/src/readers/array-reader.ts

@@ -0,0 +1,26 @@
+import type { ParseState, IReader } from "../api";
+
+class ArrayReader<T> implements IReader<T> {
+    constructor(protected input: ArrayLike<T>) {}
+
+    read(state: ParseState<T>): T {
+        return this.input[state.p];
+    }
+
+    next(state: ParseState<T>): void {
+        if (state.done) return;
+        state.last = this.input[state.p];
+        state.done = ++state.p >= this.input.length;
+    }
+
+    isDone(state: ParseState<T>) {
+        return (state.done = state.p >= this.input.length);
+    }
+
+    format(state: ParseState<T>) {
+        return `offset ${state.p}`;
+    }
+}
+
+export const defArrayReader = <T>(input: ArrayLike<T>) =>
+    new ArrayReader(input);

packages/parse/src/string-reader.ts → packages/parse/src/readers/string-reader.ts

@@ -1,4 +1,4 @@
-import type { ParseState, IReader } from "./api";
+import type { ParseState, IReader } from "../api";
 
 class StringReader implements IReader<string> {
     constructor(protected input: string) {}