Initial commit

node_modules/fast-check/lib/esm/arbitrary/_internals/MixedCaseArbitrary.js

@@ -0,0 +1,91 @@
+import { bigUintN } from '../bigUintN.js';
+import { Arbitrary } from '../../check/arbitrary/definition/Arbitrary.js';
+import { Value } from '../../check/arbitrary/definition/Value.js';
+import { makeLazy } from '../../stream/LazyIterableIterator.js';
+import { applyFlagsOnChars, computeFlagsFromChars, computeNextFlags, computeTogglePositions, } from './helpers/ToggleFlags.js';
+import { safeJoin, safeSlice } from '../../utils/globals.js';
+import { BigInt } from '../../utils/globals.js';
+export class MixedCaseArbitrary extends Arbitrary {
+    constructor(stringArb, toggleCase, untoggleAll) {
+        super();
+        this.stringArb = stringArb;
+        this.toggleCase = toggleCase;
+        this.untoggleAll = untoggleAll;
+    }
+    buildContextFor(rawStringValue, flagsValue) {
+        return {
+            rawString: rawStringValue.value,
+            rawStringContext: rawStringValue.context,
+            flags: flagsValue.value,
+            flagsContext: flagsValue.context,
+        };
+    }
+    generate(mrng, biasFactor) {
+        const rawStringValue = this.stringArb.generate(mrng, biasFactor);
+        const chars = [...rawStringValue.value];
+        const togglePositions = computeTogglePositions(chars, this.toggleCase);
+        const flagsArb = bigUintN(togglePositions.length);
+        const flagsValue = flagsArb.generate(mrng, undefined);
+        applyFlagsOnChars(chars, flagsValue.value, togglePositions, this.toggleCase);
+        return new Value(safeJoin(chars, ''), this.buildContextFor(rawStringValue, flagsValue));
+    }
+    canShrinkWithoutContext(value) {
+        if (typeof value !== 'string') {
+            return false;
+        }
+        return this.untoggleAll !== undefined
+            ? this.stringArb.canShrinkWithoutContext(this.untoggleAll(value))
+            :
+                this.stringArb.canShrinkWithoutContext(value);
+    }
+    shrink(value, context) {
+        let contextSafe;
+        if (context !== undefined) {
+            contextSafe = context;
+        }
+        else {
+            if (this.untoggleAll !== undefined) {
+                const untoggledValue = this.untoggleAll(value);
+                const valueChars = [...value];
+                const untoggledValueChars = [...untoggledValue];
+                const togglePositions = computeTogglePositions(untoggledValueChars, this.toggleCase);
+                contextSafe = {
+                    rawString: untoggledValue,
+                    rawStringContext: undefined,
+                    flags: computeFlagsFromChars(untoggledValueChars, valueChars, togglePositions),
+                    flagsContext: undefined,
+                };
+            }
+            else {
+                contextSafe = {
+                    rawString: value,
+                    rawStringContext: undefined,
+                    flags: BigInt(0),
+                    flagsContext: undefined,
+                };
+            }
+        }
+        const rawString = contextSafe.rawString;
+        const flags = contextSafe.flags;
+        return this.stringArb
+            .shrink(rawString, contextSafe.rawStringContext)
+            .map((nRawStringValue) => {
+            const nChars = [...nRawStringValue.value];
+            const nTogglePositions = computeTogglePositions(nChars, this.toggleCase);
+            const nFlags = computeNextFlags(flags, nTogglePositions.length);
+            applyFlagsOnChars(nChars, nFlags, nTogglePositions, this.toggleCase);
+            return new Value(safeJoin(nChars, ''), this.buildContextFor(nRawStringValue, new Value(nFlags, undefined)));
+        })
+            .join(makeLazy(() => {
+            const chars = [...rawString];
+            const togglePositions = computeTogglePositions(chars, this.toggleCase);
+            return bigUintN(togglePositions.length)
+                .shrink(flags, contextSafe.flagsContext)
+                .map((nFlagsValue) => {
+                const nChars = safeSlice(chars);
+                applyFlagsOnChars(nChars, nFlagsValue.value, togglePositions, this.toggleCase);
+                return new Value(safeJoin(nChars, ''), this.buildContextFor(new Value(rawString, contextSafe.rawStringContext), nFlagsValue));
+            });
+        }));
+    }
+}