122 lines
4.1 KiB
JavaScript
122 lines
4.1 KiB
JavaScript
const fs = require("fs")
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const n = 100
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const subn = 10
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const kMacroParamLimit = 127
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function forN(n, cb) {
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for (var i = 0; i < n; i++) {
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cb(i)
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}
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}
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function genArray(n) {
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return [...Array(n).keys()]
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}
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function formatNJoin(n, start, join) {
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return start + genArray(n).join(join)
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}
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function formatNJoinReverse(n, start, join) {
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return start + genArray(n).reverse().join(join)
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}
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function formatNJoinReverseSuffix(n, start, join, suffix) {
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return start + genArray(n).reverse().join(suffix + join) + suffix
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}
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function formatNJoinReverse(n, start, join) {
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return start + genArray(n).reverse().join(join)
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}
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function formatNParamPattern(n, join) {
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return formatNJoin(n, join, ", " + join)
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}
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function formatNParamPatternReverse(n, join) {
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return formatNJoinReverse(n, join, ", " + join)
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}
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function formatNParamPatternReverseSuffix(n, join, suffix) {
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return formatNJoinReverseSuffix(n, join, ", " + join, suffix)
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}
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var textBuffer = ""
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textBuffer +=
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`/**
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* X-Macro alternative. Defines AU_FOR_EACH_N(expandable, ...args*N)
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* Autogenerated by forEach.js; do not modify"
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*/
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#define AU_FE_EXPAND(exp) exp
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#define AU_FE_ERROR(exp) ERROR. CHECK PARAMETER COUNT. DID YOU FORGET A COMMA?
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`
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forN(subn, function(subN) {
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if (!subN) return
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var suffix = subN != 1 ? "_" + (subN): ""
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var subNMulNCapped = Math.min(kMacroParamLimit - 3, n * subN)
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var ignoreList = {}
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var ignoreListFirst = {}
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forN(subNMulNCapped, function(i) {
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if (i == 0) {
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textBuffer += `#define AU_FE_0${suffix}(prefix) \n`
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ignoreListFirst[`AU_FE_0_FIRST${suffix}`] = true
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return
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}
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var X = formatNParamPattern(subN, "X")
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var iM1 = i - 1
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var iM1Translated = i - subN
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if (subN == 1) {
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textBuffer += `#define AU_FE_${i}${suffix}(prefix, ${X}, ...) prefix(${X}) AU_FE_EXPAND(AU_FE_${iM1}${suffix}(prefix, __VA_ARGS__))\n`
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} else if (i % subN == 0) {
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if (i == subN) {
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textBuffer += `#define AU_FE_${i}${suffix}(prefix, ${X}) prefix(${X}) AU_FE_EXPAND(AU_FE_${iM1Translated}${suffix}(prefix))\n`
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} else {
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textBuffer += `#define AU_FE_${i}${suffix}(prefix, ${X}, ...) prefix(${X}) AU_FE_EXPAND(AU_FE_${iM1Translated}${suffix}(prefix, __VA_ARGS__))\n`
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}
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} else {
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ignoreList[`AU_FE_${i}${suffix}`] = true
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}
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var I2 = i + 1
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if (i < subN) {
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ignoreListFirst[`AU_FE_${i}_FIRST${suffix}`] = true
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} else if ((i % (subN) == 0)) {
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if (i == subN) {
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textBuffer += `#define AU_FE_${I2}_FIRST${suffix}(first, prefix, ${X}) first(${X}) AU_FE_EXPAND(AU_FE_${iM1Translated}${suffix}(prefix))\n`
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} else {
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textBuffer += `#define AU_FE_${I2}_FIRST${suffix}(first, prefix, ${X}, ...) first(${X}) AU_FE_EXPAND(AU_FE_${iM1Translated}${suffix}(prefix, __VA_ARGS__))\n`
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}
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} else {
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ignoreListFirst[`AU_FE_${I2}_FIRST${suffix}`] = true
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}
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})
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var getMacroParams = formatNParamPattern(subNMulNCapped, "_")
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textBuffer += `#define AU_GET_MACRO${suffix}(${getMacroParams}, NAME,...) NAME\n`
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var params = formatNParamPatternReverseSuffix(subNMulNCapped, "AU_FE_", suffix)
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var params2 = formatNParamPatternReverseSuffix(subNMulNCapped, "AU_FE_", "_FIRST" + suffix)
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params = params.split(", ").map((str) => { return ignoreList[str] ? "AU_FE_ERROR" : str}).join(", ")
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params2 = params2.split(", ").map((str) => { return ignoreListFirst[str] ? "AU_FE_ERROR" : str}).join(", ")
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textBuffer += `#define AU_FOR_EACH${suffix}(action, ...) AU_FE_EXPAND(AU_GET_MACRO${suffix}(_whydoweneedthis, __VA_ARGS__, ${params})(action,__VA_ARGS__))\n`
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textBuffer += `#define AU_FOR_EACH_FIRST${suffix}(action, ...) AU_FE_EXPAND(AU_GET_MACRO${suffix}(_whydoweneedthis, __VA_ARGS__, ${params2})(action,__VA_ARGS__))`
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textBuffer += "\n\n"
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})
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fs.writeFileSync("./Include/AuroraForEach.hpp", textBuffer)
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