feat(zig): Brace matching

CHANGELOG.md

@@ -28,6 +28,7 @@ Changelog structure reference:
 - Go to usages now works properly
 - Color scheme preview now works properly
 - Better "smart" syntax highlighting when LSP is connected
+- Brace/Parenthesis/Bracket matching
 
 ### Fixed
 

README.md

@@ -18,6 +18,7 @@ Go to `Settings` -> `Languages & Frameworks` -> `Zig` -> `ZLS path` -> select yo
   - Rename symbol
   - Hover documentation
   - Go to implementations / find usages
+  - Brace/Parenthesis/Bracket matching
 - TODO:
   - Workspace Symbols
 

src/main/java/com/falsepattern/zigbrains/zig/pairing/ZigBraceMatcher.java

@@ -0,0 +1,39 @@
+package com.falsepattern.zigbrains.zig.pairing;
+
+import com.falsepattern.zigbrains.zig.psi.ZigTypes;
+import com.falsepattern.zigbrains.zon.psi.ZonTypes;
+import com.intellij.lang.BracePair;
+import com.intellij.lang.PairedBraceMatcher;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.tree.IElementType;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ZigBraceMatcher implements PairedBraceMatcher {
+    public static final BracePair BRACE_PAIR = new BracePair(ZigTypes.LBRACE, ZigTypes.RBRACE, true);
+    public static final BracePair PAREN_PAIR = new BracePair(ZigTypes.LPAREN, ZigTypes.RPAREN, false);
+    public static final BracePair BRACKET_PAIR = new BracePair(ZigTypes.LBRACKET, ZigTypes.RBRACKET, false);
+    private static final BracePair[] PAIRS = new BracePair[]{BRACE_PAIR, PAREN_PAIR, BRACKET_PAIR};
+    @Override
+    public BracePair @NotNull [] getPairs() {
+        return PAIRS;
+    }
+
+    @Override
+    public boolean isPairedBracesAllowedBeforeType(@NotNull IElementType lbraceType, @Nullable IElementType contextType) {
+        return true;
+    }
+
+    @Override
+    public int getCodeConstructStart(PsiFile file, int openingBraceOffset) {
+        var theBrace = file.findElementAt(openingBraceOffset);
+        if (theBrace == null) {
+            return openingBraceOffset;
+        }
+        var parent = theBrace.getParent();
+        if (parent == null) {
+            return openingBraceOffset;
+        }
+        return parent.getTextOffset();
+    }
+}

src/main/resources/META-INF/plugin.xml

@@ -74,6 +74,9 @@
         <lang.syntaxHighlighterFactory language="Zig"
                                        implementationClass="com.falsepattern.zigbrains.zig.highlighter.ZigSyntaxHighlighterFactory"/>
 
+        <lang.braceMatcher language="Zig"
+                           implementationClass="com.falsepattern.zigbrains.zig.pairing.ZigBraceMatcher"/>
+
         <applicationConfigurable parentId="language"
                                  instance="com.falsepattern.zigbrains.zig.settings.AppSettingsConfigurable"
                                  id="com.falsepattern.zigbrains.zig.settings.AppSettingsConfigurable"