chore: add prismjs for syntax highlighting

1 files changed, 56 insertions, 0 deletions

diff --git a/public/prism/prism-gn.js b/public/prism/prism-gn.js
new file mode 100644
index 0000000..5c5c3d0
--- /dev/null
+++ b/public/prism/prism-gn.js
@@ -0,0 +1,56 @@
+// https://gn.googlesource.com/gn/+/refs/heads/main/docs/reference.md#grammar
+
+Prism.languages.gn = {
+  comment: {
+    pattern: /#.*/,
+    greedy: true,
+  },
+  'string-literal': {
+    pattern: /(^|[^\\"])"(?:[^\r\n"\\]|\\.)*"/,
+    lookbehind: true,
+    greedy: true,
+    inside: {
+      interpolation: {
+        pattern:
+          /((?:^|[^\\])(?:\\{2})*)\$(?:\{[\s\S]*?\}|[a-zA-Z_]\w*|0x[a-fA-F0-9]{2})/,
+        lookbehind: true,
+        inside: {
+          number: /^\$0x[\s\S]{2}$/,
+          variable: /^\$\w+$/,
+          'interpolation-punctuation': {
+            pattern: /^\$\{|\}$/,
+            alias: 'punctuation',
+          },
+          expression: {
+            pattern: /[\s\S]+/,
+            inside: null, // see below
+          },
+        },
+      },
+      string: /[\s\S]+/,
+    },
+  },
+
+  keyword: /\b(?:else|if)\b/,
+  boolean: /\b(?:false|true)\b/,
+  'builtin-function': {
+    // a few functions get special highlighting to improve readability
+    pattern:
+      /\b(?:assert|defined|foreach|import|pool|print|template|tool|toolchain)(?=\s*\()/i,
+    alias: 'keyword',
+  },
+  function: /\b[a-z_]\w*(?=\s*\()/i,
+  constant:
+    /\b(?:current_cpu|current_os|current_toolchain|default_toolchain|host_cpu|host_os|root_build_dir|root_gen_dir|root_out_dir|target_cpu|target_gen_dir|target_os|target_out_dir)\b/,
+
+  number: /-?\b\d+\b/,
+
+  operator: /[-+!=<>]=?|&&|\|\|/,
+  punctuation: /[(){}[\],.]/,
+};
+
+Prism.languages.gn['string-literal'].inside['interpolation'].inside[
+  'expression'
+].inside = Prism.languages.gn;
+
+Prism.languages.gni = Prism.languages.gn;