Parse calls

5 files changed, 210 insertions, 1 deletions

diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedCallNode.java b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedCallNode.java
new file mode 100644
index 0000000..2c19adb
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedCallNode.java
@@ -0,0 +1,60 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.ast.untyped;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode imports
+// Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode imports
+
+public record UntypedCallNode(
+    org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode receiver,
+    java.util.List<org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode> args,
+    org.zwobble.hobgoblin.compiler.sources.Source source
+) implements org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode {
+    public static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder arbitrary() {
+        return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReferenceNode.arbitrary().build(), java.util.List.of(), org.zwobble.hobgoblin.compiler.sources.HobgoblinNativeSources.arbitrarySource());
+    }
+
+    public record Builder(
+        org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode receiver,
+        java.util.List<org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode> args,
+        org.zwobble.hobgoblin.compiler.sources.Source source
+    ) implements org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode.Builder {
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode build() {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode(receiver, args, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder withReceiver(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode receiver) {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder(receiver, args, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder withReceiver(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode.Builder receiver) {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder(receiver.build(), args, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder withArgs(java.util.List<org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode> args) {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder(receiver, args, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder addArg(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode arg) {
+            var args = new java.util.ArrayList<org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode>(this.args);
+            args.add(arg);
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder(receiver, args, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder addArg(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode.Builder arg) {
+            var args = new java.util.ArrayList<org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode>(this.args);
+            args.add(arg.build());
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder(receiver, args, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder withSource(org.zwobble.hobgoblin.compiler.sources.Source source) {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder(receiver, args, source);
+        }
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode body
+    // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedExpressionNode.java b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedExpressionNode.java
index b9c14e9..11f6b67 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedExpressionNode.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedExpressionNode.java
@@ -5,7 +5,7 @@ package org.zwobble.hobgoblin.compiler.ast.untyped;
 // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode imports
 // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode imports
 
-public sealed interface UntypedExpressionNode permits org.zwobble.hobgoblin.compiler.ast.untyped.UntypedMemberAccessNode, org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReferenceNode {
+public sealed interface UntypedExpressionNode permits org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode, org.zwobble.hobgoblin.compiler.ast.untyped.UntypedMemberAccessNode, org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReferenceNode {
     public interface Builder {
         public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode build();
 
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java b/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java
index 4620aaf..e15e97a 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java
@@ -493,6 +493,40 @@ public class Parser {
         return new UntypedReferenceNode(name, source);
     }
 
+    private static final OperationParser<OperatorPrecedence, UntypedExpressionNode> CALL_PARSER = new OperationParser<>() {
+        @Override
+        public OperatorPrecedence precedence() {
+            return OperatorPrecedence.CALL;
+        }
+
+        @Override
+        public List<TokenType> operatorTokenTypes() {
+            return List.of(TokenType.SYMBOL_PAREN_OPEN);
+        }
+
+        @Override
+        public UntypedExpressionNode parse(
+            SourcePosition start,
+            UntypedExpressionNode left,
+            TokenIterator tokens
+        ) {
+            tokens.skip(TokenType.SYMBOL_PAREN_OPEN);
+
+            var args = parseMany(
+                () -> tokens.isNext(TokenType.SYMBOL_PAREN_CLOSE),
+                () -> parseTopLevelExpression(tokens),
+                () -> tokens.trySkip(TokenType.SYMBOL_COMMA)
+            );
+
+            tokens.skip(TokenType.SYMBOL_PAREN_CLOSE);
+
+            var end = tokens.endPosition();
+            var source = createSource(start, end);
+
+            return new UntypedCallNode(left, args, source);
+        }
+    };
+
     private static final OperationParser<OperatorPrecedence, UntypedExpressionNode> MEMBER_ACCESS_PARSER = new OperationParser<>() {
         @Override
         public OperatorPrecedence precedence() {
@@ -521,6 +555,7 @@ public class Parser {
     };
 
     private static final Map<TokenType, OperationParser<OperatorPrecedence, UntypedExpressionNode>> OPERATION_PARSERS = Stream.of(
+            CALL_PARSER,
             MEMBER_ACCESS_PARSER
         )
         .flatMap(parser ->
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedCallNodeMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedCallNodeMatcher.java
new file mode 100644
index 0000000..a9ce6a5
--- /dev/null
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedCallNodeMatcher.java
@@ -0,0 +1,53 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.ast.untyped;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher imports
+// Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher imports
+
+public final class UntypedCallNodeMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
+    public static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher isUntypedCallNode() {
+        return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher(java.util.List.of());
+    }
+
+    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode>> submatchers;
+
+    private UntypedCallNodeMatcher(
+        java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode>> 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.ast.untyped.UntypedCallNode.class, this.submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher withReceiver(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode> receiver) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("receiver", org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode::receiver, (org.zwobble.precisely.Matcher) receiver));
+        return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher(submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher withArgs(org.zwobble.precisely.Matcher<? super java.util.List<org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode>> args) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("args", org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode::args, (org.zwobble.precisely.Matcher) args));
+        return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher(submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher withSource(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.sources.Source> source) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("source", org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNode::source, (org.zwobble.precisely.Matcher) source));
+        return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher(submatchers);
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher body
+    // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher body
+}
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/parser/ParserCallTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/parser/ParserCallTests.java
new file mode 100644
index 0000000..64e84de
--- /dev/null
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/parser/ParserCallTests.java
@@ -0,0 +1,61 @@
+package org.zwobble.hobgoblin.compiler.parser;
+
+import org.junit.jupiter.api.Test;
+
+import static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedCallNodeMatcher.isUntypedCallNode;
+import static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReferenceNodeMatcher.isUntypedReferenceNode;
+import static org.zwobble.hobgoblin.compiler.parser.ParserTesting.parseString;
+import static org.zwobble.precisely.AssertThat.assertThat;
+import static org.zwobble.precisely.Matchers.equalTo;
+import static org.zwobble.precisely.Matchers.isSequence;
+
+public class ParserCallTests {
+    @Test
+    public void canParseCallWithNoArguments() {
+        var source = "f()";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(node, isUntypedCallNode()
+            .withReceiver(isUntypedReferenceNode()
+                .withName(equalTo("f"))
+            )
+            .withArgs(isSequence())
+        );
+    }
+
+    @Test
+    public void canParseCallWithOnePositionalArgument() {
+        var source = "f(a)";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(node, isUntypedCallNode()
+            .withReceiver(isUntypedReferenceNode()
+                .withName(equalTo("f"))
+            )
+            .withArgs(isSequence(
+                isUntypedReferenceNode().withName(equalTo("a"))
+            ))
+        );
+    }
+
+    @Test
+    public void canParseCallWithMultiplePositionalArguments() {
+        var source = "f(a, b, c)";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(node, isUntypedCallNode()
+            .withReceiver(isUntypedReferenceNode()
+                .withName(equalTo("f"))
+            )
+            .withArgs(isSequence(
+                isUntypedReferenceNode().withName(equalTo("a")),
+                isUntypedReferenceNode().withName(equalTo("b")),
+                isUntypedReferenceNode().withName(equalTo("c"))
+            ))
+        );
+    }
+}
+