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implement very basic highlighting

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This commit is contained in:
Colin
2023-07-07 01:47:46 +00:00
parent 27596798d6
commit c2fcc8b6ee
17 changed files with 87 additions and 20 deletions
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8
tests/config/tree-sitter/config.json Normal file
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{
"parser-directories": [
".."
],
"theme": {
"keyword": "#cccccc"
}
}

4
tests/highlight/basic Normal file
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#!/usr/bin/env nix-shell
#!nix-shell -i bash -p bash
true
echo "bash-string"

16
tests/highlight/basic.spec.html Normal file
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<body>
<table>
<tbody><tr><td class="line-number">1</td><td class="line">#!/usr/bin/env nix-shell
</td></tr>
<tr><td class="line-number">2</td><td class="line"><span style="color: #cccccc">#!nix-shell -i bash -p bash</span>
</td></tr>
<tr><td class="line-number">3</td><td class="line">true
</td></tr>
<tr><td class="line-number">4</td><td class="line">echo "bash-string"
</td></tr>
</tbody></table>
</body>

22
tests/test_highlight Executable file
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#!/bin/sh
# `tree-sitter test` doesn't work to validate syntax highlighting for two reasons:
# - it identifies a file's language only by its filetype (not shebang/regex), but nix-shell has no filetype
# - it requires the language to support comments, but nix-shell doesn't have those
#
# hence this custom testing tool.
#
# usage: test_highlight <TEST_NAME>
#
# upon execution, performs this sequence:
# 1. highlights the file at `highlight/<TEST_NAME>`.
# 2. asserts the result's body against `hightlight/<TEST_NAME>.spec.html`
here=$(dirname $(realpath $0))
input_file="$here/highlight/$1"
spec_file="$here/highlight/$1.spec.html"
# cd into this directory before highlighting because paths specified in the tree-sitter config are relative to PWD
cd "$here" && XDG_CONFIG_HOME="$here/config" tree-sitter highlight --scope "source.nix_shell" --html "$input_file" | \
htmlq 'body' | \
diff -u "$spec_file" '/dev/stdin'