add statements ending in ; and allow parsing multiple of them

1 files changed, 12 insertions, 5 deletions

diff --git a/src/compile.zig b/src/compile.zig
index 9d70a58..6a79efd 100644
--- a/src/compile.zig
+++ b/src/compile.zig
@@ -2,7 +2,7 @@ const std = @import("std");
 const Allocator = std.mem.Allocator;
 const root = @import("root");
 const Token = root.Lexer.Token;
-const Expr = root.Expr;
+const parse = root.parse;
 const Location = root.Lexer.Location;
 
 pub const VReg = enum(u32) { _ };
@@ -84,7 +84,7 @@ pub const Block = struct {
     }
 };
 
-pub fn compile(allocator: Allocator, source: []const u8, expr: *const Expr) !Block {
+pub fn compile(allocator: Allocator, source: []const u8, stmts: []parse.Stmt) !Block {
     const instrs: std.ArrayListUnmanaged(Instr) = try .initCapacity(allocator, 0);
     var ctx: CompileContext = .{
         .allocator = allocator,
@@ -92,7 +92,9 @@ pub fn compile(allocator: Allocator, source: []const u8, expr: *const Expr) !Blo
         .register_counter = 0,
         .instrs = instrs,
     };
-    _ = try ctx.compileExpr(expr);
+    for (stmts) |stmt| {
+        try ctx.compileStmt(stmt);
+    }
     return .init(allocator, ctx.instrs.items);
 }
 
@@ -108,7 +110,13 @@ const CompileContext = struct {
         try self.instrs.append(self.allocator, instr);
     }
 
-    fn compileExpr(self: *Self, expr: *const Expr) !VReg {
+    fn compileStmt(self: *Self, stmt: parse.Stmt) !void {
+        switch (stmt.type) {
+            .expr => |expr| _ = try self.compileExpr(expr),
+        }
+    }
+
+    fn compileExpr(self: *Self, expr: *const parse.Expr) !VReg {
         const dest = self.register();
         switch (expr.type) {
             .integer_literal => try addInstr(self, .{
@@ -148,7 +156,6 @@ const CompileContext = struct {
                 }
             },
             .identifier => return error.CantCompileIdentifierExpr,
-            .invalid => return error.CantCompileInvalidExpr,
         }
         return dest;
     }