export const description = `
Validation tests for bitwise complement expressions.
`;

import { makeTestGroup } from '../../../../../common/framework/test_group.js';
import { keysOf, objectsToRecord } from '../../../../../common/util/data_tables.js';
import { kAllScalarsAndVectors, scalarTypeOf, Type } from '../../../../util/conversion.js';
import { ShaderValidationTest } from '../../shader_validation_test.js';

export const g = makeTestGroup(ShaderValidationTest);

// A list of scalar and vector types.
const kScalarAndVectorTypes = objectsToRecord(kAllScalarsAndVectors);

g.test('scalar_vector')
  .desc(
    `
  Validates that scalar and vector bitwise complement expressions are only accepted for integers.
  `
  )
  .params(u => u.combine('type', keysOf(kScalarAndVectorTypes)).beginSubcases())
  .fn(t => {
    const type = kScalarAndVectorTypes[t.params.type];
    const elementTy = scalarTypeOf(type);
    const hasF16 = elementTy === Type.f16;
    const code = `
${hasF16 ? 'enable f16;' : ''}
const rhs = ${type.create(0).wgsl()};
const foo = ~rhs;
`;

    t.expectCompileResult([Type.abstractInt, Type.i32, Type.u32].includes(elementTy), code);
  });

interface InvalidTypeConfig {
  // An expression that produces a value of the target type.
  expr: string;
  // A function that converts an expression of the target type into a valid complement operand.
  control: (x: string) => string;
}
const kInvalidTypes: Record<string, InvalidTypeConfig> = {
  mat2x2f: {
    expr: 'm',
    control: e => `i32(${e}[0][0])`,
  },

  array: {
    expr: 'arr',
    control: e => `${e}[0]`,
  },

  ptr: {
    expr: '(&u)',
    control: e => `*${e}`,
  },

  atomic: {
    expr: 'a',
    control: e => `atomicLoad(&${e})`,
  },

  texture: {
    expr: 't',
    control: e => `i32(textureLoad(${e}, vec2(), 0).x)`,
  },

  sampler: {
    expr: 's',
    control: e => `i32(textureSampleLevel(t, ${e}, vec2(), 0).x)`,
  },

  struct: {
    expr: 'str',
    control: e => `${e}.u`,
  },
};

g.test('invalid_types')
  .desc(
    `
  Validates that bitwise complement expressions are never accepted for non-scalar and non-vector types.
  `
  )
  .params(u =>
    u.combine('type', keysOf(kInvalidTypes)).combine('control', [true, false]).beginSubcases()
  )
  .fn(t => {
    const type = kInvalidTypes[t.params.type];
    const expr = t.params.control ? type.control(type.expr) : type.expr;
    const code = `
@group(0) @binding(0) var t : texture_2d<f32>;
@group(0) @binding(1) var s : sampler;
@group(0) @binding(2) var<storage, read_write> a : atomic<i32>;

struct S { u : u32 }

var<private> u : u32;
var<private> m : mat2x2f;
var<private> arr : array<u32, 4>;
var<private> str : S;

@compute @workgroup_size(1)
fn main() {
  let foo = ~${expr};
}
`;

    t.expectCompileResult(t.params.control, code);
  });
