From 53475694bb32e0df968a9d86b45e4a899fa166e9 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Fri, 3 Jul 2026 14:39:20 +0100
Subject: Add call expressions to Rust AST

---
 .../compiler/output/lang/rust/RustWriterTests.java | 24 ++++++++++++
 .../lang/rust/ast/RustCallExpressionMatcher.java   | 45 ++++++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustCallExpressionMatcher.java

(limited to 'src/test')

diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java
index 2090c1e..2709df9 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java
@@ -357,6 +357,30 @@ public class RustWriterTests {
         assertThat(string, equalTo("false"));
     }
 
+    @Test
+    public void callExpressionWithNoArgs() throws IOException {
+        var rust = RustCallExpression.arbitrary()
+            .withFunction(RustPathInExpression.of("f"))
+            .build();
+
+        var string = write(writer -> writer.writeExpression(rust));
+
+        assertThat(string, equalTo("f()"));
+    }
+
+    @Test
+    public void callExpressionWithArgs() throws IOException {
+        var rust = RustCallExpression.arbitrary()
+            .withFunction(RustPathInExpression.of("f"))
+            .addArg(RustPathInExpression.of("x"))
+            .addArg(RustPathInExpression.of("y"))
+            .build();
+
+        var string = write(writer -> writer.writeExpression(rust));
+
+        assertThat(string, equalTo("f(x, y)"));
+    }
+
     // == Paths ==
 
     @Test
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustCallExpressionMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustCallExpressionMatcher.java
new file mode 100644
index 0000000..a17d04d
--- /dev/null
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustCallExpressionMatcher.java
@@ -0,0 +1,45 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.rust.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher imports
+
+public class RustCallExpressionMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
+    public static org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher isRustCallExpression() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher(java.util.List.of());
+    }
+
+    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpression>> submatchers;
+
+    private RustCallExpressionMatcher(java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpression>> submatchers) {
+        this.submatchers = submatchers;
+    }
+
+    public org.zwobble.precisely.MatchResult match(java.lang.Object actual) {
+        return this.toMatcher().match(actual);
+    }
+
+    public org.zwobble.precisely.TextTree describe() {
+        return this.toMatcher().describe();
+    }
+
+    private org.zwobble.precisely.Matcher<java.lang.Object> toMatcher() {
+        return org.zwobble.precisely.Matchers.instanceOf(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpression.class, this.submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher withFunction(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpression> function) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpression>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("function", org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpression::function, function));
+        return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher(submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher withArgs(org.zwobble.precisely.Matcher<? super java.util.List<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpression>> args) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpression>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("args", org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpression::args, args));
+        return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher(submatchers);
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustCallExpressionMatcher body
+}
-- 
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