C generation

src/utils.js

@@ -0,0 +1,55 @@
+const fnv = require("fnv-plus");
+
+module.exports.ident =ident;
+
+module.exports.extractSizes =extractSizes;
+module.exports.csArr = csArr;
+module.exports.subArray = subArray;
+module.exports.accSizes = accSizes;
+module.exports.fnvHash = fnvHash;
+
+function ident(text) {
+    let lines = text.split("\n");
+    for (let i=0; i<lines.length; i++) {
+        if (lines[i]) lines[i] = "    "+lines[i];
+    }
+    return lines.join("\n");
+}
+
+function extractSizes (o) {
+    if (! Array.isArray(o)) return [1, 0];
+    return [o.length, ...extractSizes(o[0])];
+}
+
+// Input [1,2,3]
+// Returns " ,1 ,2, 3"
+function csArr(_arr) {
+    let S = "";
+    const arr = _arr || [];
+    for (let i=0; i<arr.length; i++) {
+        S = " ,"+arr[i];
+    }
+    return S;
+}
+
+function subArray(value, sels) {
+    if ((!sels) || (sels.length == 0)) return value;
+
+    return subArray(value[sels[0]], sels.slice(1));
+}
+
+function accSizes(_sizes) {
+    const sizes = _sizes || [];
+    const accSizes = [1, 0];
+    for (let i=sizes.length-1; i>=0; i--) {
+        accSizes.unshift(accSizes[0]*sizes[i]);
+    }
+    return accSizes;
+}
+
+function fnvHash(str) {
+    return fnv.hash(str, 64).hex();
+}
+
+
+