add some stuffs
This commit is contained in:
commit
35ba1a129f
12 changed files with 520 additions and 0 deletions
2
.gitignore
vendored
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2
.gitignore
vendored
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node_modules/
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3
.gitmodules
vendored
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3
.gitmodules
vendored
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[submodule "vendor/kuebiko"]
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path = vendor/kuebiko
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url = git@git.kitsu.cafe:rowan/kuebiko.git
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22
package-lock.json
generated
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22
package-lock.json
generated
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{
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"name": "wgsl-reflect",
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"version": "1.0.0",
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"lockfileVersion": 3,
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"requires": true,
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"packages": {
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"": {
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"name": "wgsl-reflect",
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"version": "1.0.0",
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"license": "ISC",
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"devDependencies": {
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"folktest": "git+https://git.kitsu.cafe/rowan/folktest.git"
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}
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},
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"node_modules/folktest": {
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"version": "1.0.0",
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"resolved": "git+https://git.kitsu.cafe/rowan/folktest.git#708d44f1215be33fcceba426029f44b4f963dbe5",
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"dev": true,
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"license": "GPL-3.0-or-later"
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}
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}
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}
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16
package.json
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16
package.json
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{
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"name": "wgsl-reflect",
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"version": "1.0.0",
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"main": "index.js",
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"type": "module",
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"scripts": {
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"test": "./tests/index.js"
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},
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"keywords": [],
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"author": "",
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"license": "ISC",
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"description": "",
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"devDependencies": {
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"folktest": "git+https://git.kitsu.cafe/rowan/folktest.git"
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}
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}
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77
src/index.js
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77
src/index.js
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const shader = `// A fragment shader which lights textured geometry with point lights.
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// Lights from a storage buffer binding.
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struct PointLight {
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position : vec3f,
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color : vec3f,
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}
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struct LightStorage {
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pointCount : u32,
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point : array<PointLight>,
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}
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@group(0) @binding(0) var<storage> lights : LightStorage;
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// Texture and sampler.
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@group(1) @binding(0) var baseColorSampler : sampler;
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@group(1) @binding(1) var baseColorTexture : texture_2d<f32>;
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// Function arguments are values from the vertex shader.
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@fragment
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fn fragmentMain(@location(0) worldPos : vec3f,
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@location(1) normal : vec3f,
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@location(2) uv : vec2f) -> @location(0) vec4f {
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// Sample the base color of the surface from a texture.
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let baseColor = textureSample(baseColorTexture, baseColorSampler, uv);
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let N = normalize(normal);
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var surfaceColor = vec3f(0);
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// Loop over the scene point lights.
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for (var i = 0u; i < lights.pointCount; i++) {
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let worldToLight = lights.point[i].position - worldPos;
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let dist = length(worldToLight);
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let dir = normalize(worldToLight);
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// Determine the contribution of this light to the surface color.
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let radiance = lights.point[i].color * (1 / pow(dist, 2));
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let nDotL = max(dot(N, dir), 0);
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// Accumulate light contribution to the surface color.
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surfaceColor += baseColor.rgb * radiance * nDotL;
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}
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// Return the accumulated surface color.
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return vec4(surfaceColor, baseColor.a);
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}`
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/**
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*
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3.1 Parsing
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Remove comments:
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Replace the first comment with a space code point (U+0020).
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Repeat until no comments remain.
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Find template lists, using the algorithm in § 3.9 Template Lists.
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Parse the whole text, attempting to match the translation_unit grammar rule. Parsing uses a LALR(1) parser (one token of lookahead) [DeRemer1969], with the following customization:
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Tokenization is interleaved with parsing, and is context-aware. When the parser requests the next token:
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Consume and ignore an initial sequence of blankspace code points.
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If the next code point is the start of a template list, consume it and return _template_args_start.
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If the next code point is the end of a template list, consume it and return _template_args_end.
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Otherwise:
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A token candidate is any WGSL token formed from the non-empty prefix of the remaining unconsumed code points.
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The token returned is the longest token candidate that is also a valid lookahead token for the current parser state. [VanWyk2007]
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*/
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16
src/parser/comments.js
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16
src/parser/comments.js
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import { char, until } from '../../vendor/kuebiko/src/index.js'
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// https://www.w3.org/TR/WGSL/#comments
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const slash = char('\u002f')
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const asterisk = char('\u002a')
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const comment = seq(slash, slash)
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const blockCommentStart = seq(slash, asterisk)
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const blockCommentEnd = seq(asterisk, slash)
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const blockComment = seq(
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blockCommentStart,
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until(blockCommentEnd)
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)
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188
src/parser/keyword.js
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188
src/parser/keyword.js
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import { any, anyChar, char, many, not, seq, str, until } from '../../vendor/kuebiko/src/index.js'
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export const ident = seq(
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not(any(
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char('_'),
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seq(str('__'), many(anyChar)),
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)),
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until(' ')
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)
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const Keyword = [
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'alias',
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'break',
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'case',
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'const',
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'const_assert',
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'continue',
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'continuing',
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'default',
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'diagnostic',
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'discard',
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'else',
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'enable',
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'false',
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'fn',
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'for',
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'if',
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'let',
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'loop',
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'override',
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'requires',
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'return',
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'struct',
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'switch',
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'true',
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'var',
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'while'
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]
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const Reserved = [
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'NULL',
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'Self',
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'abstract',
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'active',
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'alignas',
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'alignof',
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'as',
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'asm',
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'asm_fragment',
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'async',
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'attribute',
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'auto',
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'await',
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'become',
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'cast',
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'catch',
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'class',
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'co_await',
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'co_return',
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'co_yield',
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'coherent',
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'column_major',
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'common',
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'compile',
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'compile_fragment',
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'concept',
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'const_cast',
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'consteval',
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'constexpr',
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'constinit',
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'crate',
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'debugger',
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'decltype',
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'delete',
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'demote',
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'demote_to_helper',
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'do',
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'dynamic_cast',
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'enum',
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'explicit',
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'export',
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'extends',
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'extern',
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'external',
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'fallthrough',
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'filter',
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'final',
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'finally',
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'friend',
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'from',
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'fxgroup',
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'get',
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'goto',
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'groupshared',
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'highp',
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'impl',
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'implements',
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'import',
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'inline',
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'instanceof',
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'interface',
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'layout',
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'lowp',
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'macro',
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'macro_rules',
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'match',
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'mediump',
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'meta',
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'mod',
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'module',
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'move',
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'mut',
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'mutable',
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'namespace',
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'new',
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'nil',
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'noexcept',
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'noinline',
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'nointerpolation',
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'non_coherent',
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'noncoherent',
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'noperspective',
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'null',
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'nullptr',
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'of',
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'operator',
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'package',
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'packoffset',
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'partition',
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'pass',
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'patch',
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'pixelfragment',
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'precise',
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'precision',
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'premerge',
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'priv',
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'protected',
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'pub',
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'public',
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'readonly',
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'ref',
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'regardless',
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'register',
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'reinterpret_cast',
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'require',
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'resource',
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'restrict',
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'self',
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'set',
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'shared',
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'sizeof',
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'smooth',
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'snorm',
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'static',
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'static_assert',
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'static_cast',
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'std',
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'subroutine',
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'super',
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'target',
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'template',
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'this',
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'thread_local',
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'throw',
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'trait',
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'try',
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'type',
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'typedef',
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'typeid',
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'typename',
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'typeof',
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'union',
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'unless',
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'unorm',
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'unsafe',
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'unsized',
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'use',
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'using',
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'varying',
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'virtual',
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'volatile',
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'wgsl',
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'where',
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'with',
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'writeonly',
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'yield'
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]
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145
src/parser/literal.js
Normal file
145
src/parser/literal.js
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import { any, anyOf, digit, maybe, seq, str } from '../../vendor/kuebiko/src/index.js'
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import { many } from '../../vendor/kuebiko/src/index.js'
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const iu = anyOf('iu')
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const decimal = char('.')
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const sign = anyOf('+-')
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const e = anyOf('eE')
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const p = anyOf('pP')
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const fh = anyOf('fh')
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export const zero = char('0')
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export const digits = many(digit)
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export const booleanLiteral = any(str('true'), str('false'))
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export const decimalIntLiteral = any(
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zero,
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seq(
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not(zero),
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digits,
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maybe(iu)
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)
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)
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const hexDigit = any(digit, anyOf('abcdef'), anyOf('ABCDEF'))
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const hexPrefix = seq(zero, anyOf('xX'))
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const hexIntLiteral = seq(
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hexPrefix,
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hexDigit,
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maybe(iu)
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)
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export const integerLiteral = any(
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decimalIntLiteral,
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hexIntLiteral
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)
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const nonzeroDigit = anyOf('123456789')
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const many1 = parser => seq(parser, many(parser))
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const exponent = seq(
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e,
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sign,
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many1(digit)
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)
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const fhDecimalFloatLiteral = seq(
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any(
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zero,
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seq(
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nonzeroDigit,
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digits
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)
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),
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fh
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)
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const eDecimalFloatLiteral = seq(
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digits,
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exponent,
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fh
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)
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const cDecimalFloatLiteral = seq(
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any(
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seq(
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digits,
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decimal,
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many1(digit)
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),
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seq(
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many1(digit),
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decimal,
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digits
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)
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),
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maybe(seq(exponent, fh)),
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)
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const decimalFloatLiteral = any(
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fhDecimalFloatLiteral,
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eDecimalFloatLiteral,
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cDecimalFloatLiteral
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)
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const sHexFloatLiteral = seq(
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hexPrefix,
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any(
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seq(
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many(hexDigit),
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decimal,
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many1(hexDigit)
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),
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seq(
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many1(hexDigit),
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decimal,
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many(hexDigit)
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)
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),
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maybe(
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seq(
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p,
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maybe(sign),
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many1(digit),
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fh
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)
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)
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)
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const zHexFloatLiteral = seq(
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hexPrefix,
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many1(hexDigit),
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p,
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maybe(sign),
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many1(digit),
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maybe(fh)
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)
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const hexFloatLiteral = any(
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sHexFloatLiteral,
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zHexFloatLiteral
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)
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export const floatingPointLiteral = any(
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decimalFloatLiteral,
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hexFloatLiteral
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)
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export const numericLiteral = any(
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integerLiteral,
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floatingPointLiteral
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)
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export const literal = any(
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numericLiteral,
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booleanLiteral
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)
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25
src/parser/whitespace.js
Normal file
25
src/parser/whitespace.js
Normal file
|
|
@ -0,0 +1,25 @@
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import { any, char, seq } from '../../vendor/kuebiko/src/index.js'
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// https://www.w3.org/TR/WGSL/#blankspace-and-line-breaks
|
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export const space = char('\u0020')
|
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export const ht = char('\u0009')
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export const lf = char('\u000a')
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export const vt = char('\u000b')
|
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export const ff = char('\u000c')
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export const cr = char('\u000d')
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export const nel = char('\u000d')
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export const ltr = char('\u200e')
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export const rtl = char('\u200f')
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export const ls = char('\u200f')
|
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export const ps = char('\u2029')
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|
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export const blankspace = any(
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space, ht, lf, vt, ff,
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cr, nel, ltr, rtl, ls
|
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)
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|
||||
|
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export const linebreak = any(
|
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lf, vt, ff, cr, nel, ls, ps
|
||||
)
|
||||
|
||||
8
tests/index.js
Executable file
8
tests/index.js
Executable file
|
|
@ -0,0 +1,8 @@
|
|||
#!/usr/bin/env node
|
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|
||||
import { TerminalRunner } from 'folktest'
|
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import * as Tests from './units/index.js'
|
||||
|
||||
console.log(TerminalRunner(Tests).toString())
|
||||
|
||||
|
||||
17
tests/units/index.js
Normal file
17
tests/units/index.js
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
import { it, assert } from 'folktest'
|
||||
import { ident } from '../../src/parser/keyword.js'
|
||||
|
||||
export const Tests = [
|
||||
it('whatever', () => {
|
||||
const pass1 = 'test1'
|
||||
const pass2 = '_Test2'
|
||||
const fail1 = '_'
|
||||
const fail2 = '__test'
|
||||
const fail3 = 'default'
|
||||
|
||||
console.log(
|
||||
ident
|
||||
)
|
||||
})
|
||||
]
|
||||
|
||||
1
vendor/kuebiko
vendored
Submodule
1
vendor/kuebiko
vendored
Submodule
|
|
@ -0,0 +1 @@
|
|||
Subproject commit 74bac48730187475160fe6cf3cdb4bc89c8e6c0b
|
||||
Loading…
Add table
Reference in a new issue