Add type identifier source locations

backlog.txt

@@ -1,2 +1,2 @@
 * Mutually recursive functions
-* Type identifier location
+* Figure out indentation: keep tabs - what to do with printing errors? Enforce e.g. 4 spaces?

examples/test.psl

@@ -2,7 +2,7 @@ struct vec2:
 	x : f32
 	y : f32
 
-func add(a : vec2, b : vec2) -> vec2:
+func add(a : vec2, b : vec2) -> qwe:
 	return vec2(a.x + b.x, a.y + b.y)
 
 mut v = add(vec2(1.0, 2.0), vec2(3.0, 4.0))

libs/ast/source/resolve_identifiers.cpp

@@ -90,8 +90,7 @@ namespace pslang::ast
 				}
 			}
 
-			// TODO location
-			throw parse_error("Identifier \"" + identifier.name + "\" not found", {});
+			throw parse_error("Identifier \"" + identifier.name + "\" not found", identifier.location);
 		}
 
 		void resolve_identifiers(context & context, type & type)

libs/parser/rules/pslang.y

@@ -227,7 +227,7 @@ variable_keyword
 type_expression
 : unit { $$ = types::unit_type{}; }
 | primitive_type { $$ = ast::type($1); }
-| name { $$ = ast::type_identifier{$1}; }
+| name { $$ = ast::type_identifier{$1, @$}; }
 | type_expression lbracket lit_i32 rbracket { $$ = ast::array_type{std::make_unique<ast::type>($1), std::stoull($3)}; }
 | type_expression arrow type_expression { std::vector<ast::type_ptr> args; args.push_back(std::make_unique<ast::type>($1)); $$ = ast::function_type{std::move(args), std::make_unique<ast::type>($3)}; }
 | lparen function_paren_type_list rparen arrow type_expression { $$ = ast::function_type{$2, std::make_unique<ast::type>($5)}; }