From bab3189ae3e5050afd8bcbc81e936a6ee56f0377 Mon Sep 17 00:00:00 2001 From: Michael Williamson Date: Sat, 11 Jul 2026 16:33:56 +0100 Subject: Add array access to Java AST --- .../compiler/output/lang/java/JavaWriter.java | 17 ++++++++ .../output/lang/java/ast/JavaArrayAccess.java | 40 +++++++++++++++++++ .../output/lang/java/ast/JavaExpression.java | 2 +- .../compiler/output/lang/java/JavaWriterTests.java | 12 ++++++ .../lang/java/ast/JavaArrayAccessMatcher.java | 45 ++++++++++++++++++++++ 5 files changed, 115 insertions(+), 1 deletion(-) create mode 100644 src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccess.java create mode 100644 src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccessMatcher.java (limited to 'src') diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java index 41fe29c..0b24366 100644 --- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java +++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java @@ -534,6 +534,10 @@ public class JavaWriter implements AutoCloseable { void writeTopLevelExpression(JavaExpression expression) throws IOException { switch (expression) { + case JavaArrayAccess arrayAccess -> { + writeArrayAccess(arrayAccess); + } + case JavaBinaryOperation binaryOperation -> { writeBinaryOperation(binaryOperation); } @@ -616,6 +620,7 @@ public class JavaWriter implements AutoCloseable { private JavaPrecedence precedence(JavaExpression expression) { return switch (expression) { + case JavaArrayAccess arrayAccess -> JavaPrecedence.PRIMARY; case JavaBinaryOperation binaryOperation -> precedence(binaryOperation); case JavaBooleanLiteral booleanLiteral -> JavaPrecedence.PRIMARY; case JavaCast cast -> JavaPrecedence.PRIMARY; @@ -647,6 +652,18 @@ public class JavaWriter implements AutoCloseable { }; } + private void writeArrayAccess(JavaArrayAccess arrayAccess) throws IOException { + this.writeSubExpression( + arrayAccess.arrayReference(), + JavaPrecedence.PRIMARY, + true + ); + + this.writer.write("["); + this.writeTopLevelExpression(arrayAccess.index()); + this.writer.write("]"); + } + private void writeBinaryOperation(JavaBinaryOperation binaryOperation) throws IOException { var precedence = precedence(binaryOperation); var isLeftAssociative = isLeftAssociative(binaryOperation.operator()); diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccess.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccess.java new file mode 100644 index 0000000..0982b2a --- /dev/null +++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccess.java @@ -0,0 +1,40 @@ +// Generated by hobgoblin. + +package org.zwobble.hobgoblin.compiler.output.lang.java.ast; + +// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess imports +// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess imports + +public record JavaArrayAccess(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression arrayReference, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression index) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression { + public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder arbitrary() { + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build(), org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build()); + } + + public record Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression arrayReference, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression index) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder { + public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess build() { + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess(arrayReference, index); + } + + public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder withArrayReference(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression arrayReference) { + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder(arrayReference, index); + } + + public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder withArrayReference(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder arrayReference) { + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder(arrayReference.build(), index); + } + + public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder withIndex(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression index) { + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder(arrayReference, index); + } + + public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder withIndex(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder index) { + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder(arrayReference, index.build()); + } + + // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder body + // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.Builder body + } + + // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess body + // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess body +} diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java index 1f1d743..feab9e8 100644 --- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java +++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java @@ -5,7 +5,7 @@ package org.zwobble.hobgoblin.compiler.output.lang.java.ast; // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression imports // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression imports -public sealed interface JavaExpression permits org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCast, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaIntegerLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNewExpression, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNullLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStringLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaTernaryConditional { +public sealed interface JavaExpression permits org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCast, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaIntegerLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNewExpression, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNullLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStringLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaTernaryConditional { public interface Builder { public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression build(); diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java index f768827..b26b8f5 100644 --- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java +++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java @@ -1074,6 +1074,18 @@ public class JavaWriterTests { // === Binary operations === + @Test + public void arrayAccess() throws IOException { + var java = JavaArrayAccess.arbitrary() + .withArrayReference(JavaRef.arbitrary().withName(JavaIdentifier.of("x"))) + .withIndex(JavaIntegerLiteral.arbitrary().withValue(42)) + .build(); + + var string = write(writer -> writer.writeTopLevelExpression(java)); + + assertThat(string, equalTo("x[42]")); + } + @Test public void binaryOperationAdd() throws IOException { var java = new JavaBinaryOperation( diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccessMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccessMatcher.java new file mode 100644 index 0000000..1d6887e --- /dev/null +++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaArrayAccessMatcher.java @@ -0,0 +1,45 @@ +// Generated by hobgoblin. + +package org.zwobble.hobgoblin.compiler.output.lang.java.ast; + +// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher imports +// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher imports + +public class JavaArrayAccessMatcher implements org.zwobble.precisely.Matcher { + public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher isJavaArrayAccess() { + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher(java.util.List.of()); + } + + private final java.util.List> submatchers; + + private JavaArrayAccessMatcher(java.util.List> 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 toMatcher() { + return org.zwobble.precisely.Matchers.instanceOf(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess.class, this.submatchers); + } + + public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher withArrayReference(org.zwobble.precisely.Matcher arrayReference) { + var submatchers = new java.util.ArrayList>(this.submatchers); + submatchers.add(org.zwobble.precisely.Matchers.has("arrayReference", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess::arrayReference, arrayReference)); + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher(submatchers); + } + + public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher withIndex(org.zwobble.precisely.Matcher index) { + var submatchers = new java.util.ArrayList>(this.submatchers); + submatchers.add(org.zwobble.precisely.Matchers.has("index", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccess::index, index)); + return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher(submatchers); + } + + // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher body + // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaArrayAccessMatcher body +} -- cgit v1.2.3