Commit node_modules

paige/node_modules/katex/src/functions/cr.js

@@ -0,0 +1,61 @@
+//@flow
+// Row breaks within tabular environments, and line breaks at top level
+
+import defineFunction from "../defineFunction";
+import buildCommon from "../buildCommon";
+import mathMLTree from "../mathMLTree";
+import {calculateSize, makeEm} from "../units";
+import {assertNodeType} from "../parseNode";
+
+// \DeclareRobustCommand\\{...\@xnewline}
+defineFunction({
+    type: "cr",
+    names: ["\\\\"],
+    props: {
+        numArgs: 0,
+        numOptionalArgs: 0,
+        allowedInText: true,
+    },
+
+    handler({parser}, args, optArgs) {
+        const size = parser.gullet.future().text === "[" ?
+            parser.parseSizeGroup(true) : null;
+        const newLine = !parser.settings.displayMode ||
+            !parser.settings.useStrictBehavior(
+                "newLineInDisplayMode", "In LaTeX, \\\\ or \\newline " +
+                "does nothing in display mode");
+        return {
+            type: "cr",
+            mode: parser.mode,
+            newLine,
+            size: size && assertNodeType(size, "size").value,
+        };
+    },
+
+    // The following builders are called only at the top level,
+    // not within tabular/array environments.
+
+    htmlBuilder(group, options) {
+        const span = buildCommon.makeSpan(["mspace"], [], options);
+        if (group.newLine) {
+            span.classes.push("newline");
+            if (group.size) {
+                span.style.marginTop =
+                    makeEm(calculateSize(group.size, options));
+            }
+        }
+        return span;
+    },
+
+    mathmlBuilder(group, options) {
+        const node = new mathMLTree.MathNode("mspace");
+        if (group.newLine) {
+            node.setAttribute("linebreak", "newline");
+            if (group.size) {
+                node.setAttribute("height",
+                    makeEm(calculateSize(group.size, options)));
+            }
+        }
+        return node;
+    },
+});