Add parser support for table literals

source/ona/kym/ast.zig

@@ -321,12 +321,92 @@ pub const ParsedExpression = union (enum) {
 				defer _ = tokenizer.step();
 
 				return ParsedExpression{
-					.valid = .{
-						.string_literal = value,
-					},
+					.valid = .{.string_literal = value},
 				};
 			},
 
+			.symbol_brace_left => {
+				if (tokenizer.step()) {
+					return ParsedExpression{.invalid = "unexpected end of table literal"};
+				}
+
+				var is_invalid = true;
+				var table_fields = try TableFields.init(allocator, 0);
+
+				defer if (is_invalid) {
+					table_fields.deinit(allocator);
+				};
+
+				while (true) {
+					switch (tokenizer.current_token) {
+						.symbol_brace_right => {
+							_ = tokenizer.step();
+							is_invalid = false;
+
+							return ParsedExpression{
+								.valid = .{.table_literal = table_fields},
+							};
+						},
+
+						.local => |identifier| {
+							const key = identifier;
+
+							if (!tokenizer.step() or tokenizer.current_token != .symbol_equals) {
+								return ParsedExpression{.invalid = "expected `=` after identifier"};
+							}
+
+							if (!tokenizer.step()) {
+								return ParsedExpression{.invalid = "unexpected end after `=`"};
+							}
+
+							var parsed_expression = try init(allocator, tokenizer);
+
+							switch (parsed_expression) {
+								.valid => |*expression| {
+									errdefer expression.deinit(allocator);
+
+									try table_fields.push_one(allocator, .{
+										.identifier = key,
+										.expression = expression,
+									});
+								},
+
+								.invalid => |details| return ParsedExpression{.invalid = details},
+							}
+						},
+
+						.string => |identifier| {
+							const key = identifier;
+
+							if (!tokenizer.step() or tokenizer.current_token != .symbol_equals) {
+								return ParsedExpression{.invalid = "expected `=` after identifier"};
+							}
+
+							if (!tokenizer.step()) {
+								return ParsedExpression{.invalid = "unexpected end after `=`"};
+							}
+
+							var parsed_expression = try init(allocator, tokenizer);
+
+							switch (parsed_expression) {
+								.valid => |*expression| {
+									errdefer expression.deinit(allocator);
+
+									try table_fields.push_one(allocator, .{
+										.identifier = key,
+										.expression = expression,
+									});
+								},
+
+								.invalid => |details| return ParsedExpression{.invalid = details},
+							}
+						},
+
+						else => return ParsedExpression{.invalid = "expected `}` or fields in table expression"}
+					}
+				}
+			},
+
 			.symbol_minus => {
 				if (!tokenizer.step()) {
 					return ParsedExpression{.invalid = "expected expression after numeric negation (`-`)"};
@@ -519,7 +599,7 @@ pub const Expression = union (enum) {
 	integer_literal: types.Integer,
 	float_literal: types.Float,
 	string_literal: []const u8,
-	table_literal: TableLiteral,
+	table_literal: TableFields,
 	grouped_expression: *Expression,
 
 	binary_operation: struct {
@@ -533,11 +613,6 @@ pub const Expression = union (enum) {
 		expression: *Expression,
 	},
 
-	const TableLiteral = coral.list.Stack(struct {
-		identifier: []const u8,
-		expression: *Expression,
-	});
-
 	fn deinit(self: *Expression, allocator: coral.io.Allocator) void {
 		switch (self.*) {
 			.nil_literal, .true_literal, .false_literal, .integer_literal, .float_literal, .string_literal => {},
@@ -639,6 +714,11 @@ pub const Statements = struct {
 	}
 };
 
+const TableFields = coral.list.Stack(struct {
+	identifier: []const u8,
+	expression: *Expression,
+});
+
 pub const UnaryOperation = enum {
 	boolean_negation,
 	numeric_negation,