From ca311896123cef55820cf04dba15f6599c0351af Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sun, 11 Jun 2023 13:08:47 +0100
Subject: Parser main config

---
 .../java/org/shedlang/compiler/ShedCompiler.java   |  5 ++++
 .../shedlang/compiler/config/ProjectConfig.java    | 33 ++++++++++++++++++++++
 .../org/shedlang/compiler/types/NamespaceName.java | 10 +++++++
 3 files changed, 48 insertions(+)
 create mode 100644 src/main/java/org/shedlang/compiler/config/ProjectConfig.java
 create mode 100644 src/main/java/org/shedlang/compiler/types/NamespaceName.java

(limited to 'src/main/java')

diff --git a/src/main/java/org/shedlang/compiler/ShedCompiler.java b/src/main/java/org/shedlang/compiler/ShedCompiler.java
index 102d7c6f..24455816 100644
--- a/src/main/java/org/shedlang/compiler/ShedCompiler.java
+++ b/src/main/java/org/shedlang/compiler/ShedCompiler.java
@@ -1,5 +1,6 @@
 package org.shedlang.compiler;
 
+import org.shedlang.compiler.config.ProjectConfig;
 import org.shedlang.compiler.parser.Parser;
 import org.shedlang.compiler.sources.Sources;
 import org.shedlang.compiler.stackir.InstructionSerializer;
@@ -27,6 +28,10 @@ import static org.shedlang.compiler.parser.Tokeniser.tokenise;
 
 public class ShedCompiler {
     public void compile(Path projectRoot) throws IOException {
+        var config = ProjectConfig.read(projectRoot);
+
+        System.out.println("main: " + config.main());
+
         var sourceRoot = projectRoot.resolve("src");
 
         var sourceFilePaths = collectSourceFilePaths(sourceRoot);
diff --git a/src/main/java/org/shedlang/compiler/config/ProjectConfig.java b/src/main/java/org/shedlang/compiler/config/ProjectConfig.java
new file mode 100644
index 00000000..faa12c0b
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/config/ProjectConfig.java
@@ -0,0 +1,33 @@
+package org.shedlang.compiler.config;
+
+import org.shedlang.compiler.types.NamespaceName;
+import org.tomlj.Toml;
+import org.tomlj.TomlTable;
+
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.Arrays;
+
+public class ProjectConfig {
+    public static ProjectConfig read(Path projectPath) throws IOException {
+        var result = Toml.parse(projectPath.resolve("shed.toml"));
+        if (result.hasErrors()) {
+            throw result.errors().get(0);
+        }
+
+        return new ProjectConfig(result);
+    }
+
+    private final TomlTable config;
+
+    public ProjectConfig(TomlTable config) {
+        this.config = config;
+    }
+
+    public NamespaceName main() {
+        var string = config.getString("shed.main");
+        // TODO: error checking
+        // TODO: extract namespace name parsing
+        return new NamespaceName(Arrays.asList(string.split("/")));
+    }
+}
diff --git a/src/main/java/org/shedlang/compiler/types/NamespaceName.java b/src/main/java/org/shedlang/compiler/types/NamespaceName.java
new file mode 100644
index 00000000..a064d699
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/types/NamespaceName.java
@@ -0,0 +1,10 @@
+package org.shedlang.compiler.types;
+
+import java.util.List;
+
+public record NamespaceName(List<String> parts) {
+    @Override
+    public String toString() {
+        return String.join("/", parts);
+    }
+}
-- 
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