v.ast: handle more expressions in Expr.str()

Author: spytheman

vlib/v/ast/str.v

@@ -209,6 +209,12 @@ pub fn (lit &StringInterLiteral) get_fspec_braces(i int) (string, bool) {
 // string representation of expr
 pub fn (x Expr) str() string {
 	match x {
+		AnonFn {
+			return 'anon_fn'
+		}
+		DumpExpr {
+			return 'dump($x.expr.str())'
+		}
 		ArrayInit {
 			mut fields := []string{}
 			if x.has_len {
@@ -226,6 +232,12 @@ pub fn (x Expr) str() string {
 				return x.exprs.str()
 			}
 		}
+		AsCast {
+			return '$x.expr.str() as Type($x.typ)'
+		}
+		AtExpr {
+			return '$x.val'
+		}
 		CTempVar {
 			return x.orig.str()
 		}
@@ -235,9 +247,6 @@ pub fn (x Expr) str() string {
 		CastExpr {
 			return '${x.typname}($x.expr.str())'
 		}
-		AtExpr {
-			return '$x.val'
-		}
 		CallExpr {
 			sargs := args2str(x.args)
 			if x.is_method {

vlib/v/checker/checker.v

@@ -13,12 +13,9 @@ import v.util
 import v.errors
 import v.pkgconfig
 
-const (
-	max_nr_errors                 = 300
-	match_exhaustive_cutoff_limit = 10
-	int_min                       = int(0x80000000)
-	int_max                       = 0x7FFFFFFF
-)
+const int_min = int(0x80000000)
+
+const int_max = int(0x7FFFFFFF)
 
 const (
 	valid_comp_if_os        = ['windows', 'ios', 'macos', 'mach', 'darwin', 'hpux', 'gnu', 'qnx',
@@ -78,6 +75,7 @@ mut:
 	fn_scope                         &ast.Scope = voidptr(0)
 	used_fns                         map[string]bool // used_fns['println'] == true
 	main_fn_decl_node                ast.FnDecl
+	match_exhaustive_cutoff_limit    int = 10
 	// TODO: these are here temporarily and used for deprecations; remove soon
 	using_new_err_struct bool
 	inside_selector_expr bool
@@ -94,6 +92,7 @@ pub fn new_checker(table &table.Table, pref &pref.Preferences) Checker {
 		pref: pref
 		cur_fn: 0
 		timers: util.new_timers(timers_should_print)
+		match_exhaustive_cutoff_limit: pref.checker_match_exhaustive_cutoff_limit
 	}
 }
 
@@ -4707,11 +4706,11 @@ fn (mut c Checker) match_exprs(mut node ast.MatchExpr, cond_type_sym table.TypeS
 	mut err_details := 'match must be exhaustive'
 	if unhandled.len > 0 {
 		err_details += ' (add match branches for: '
-		if unhandled.len < checker.match_exhaustive_cutoff_limit {
+		if unhandled.len < c.match_exhaustive_cutoff_limit {
 			err_details += unhandled.join(', ')
 		} else {
-			remaining := unhandled.len - checker.match_exhaustive_cutoff_limit
-			err_details += unhandled[0..checker.match_exhaustive_cutoff_limit].join(', ')
+			remaining := unhandled.len - c.match_exhaustive_cutoff_limit
+			err_details += unhandled[0..c.match_exhaustive_cutoff_limit].join(', ')
 			err_details += ', and $remaining others ...'
 		}
 		err_details += ' or `else {}` at the end)'

vlib/v/pref/pref.v

@@ -144,6 +144,8 @@ pub mut:
 	build_options       []string // list of options, that should be passed down to `build-module`, if needed for -usecache
 	cache_manager       vcache.CacheManager
 	is_help             bool // -h, -help or --help was passed
+	// checker settings:
+	checker_match_exhaustive_cutoff_limit int = 10
 }
 
 pub fn parse_args(known_external_commands []string, args []string) (&Preferences, string) {
@@ -370,6 +372,11 @@ pub fn parse_args(known_external_commands []string, args []string) (&Preferences
 				res.build_options << '$arg "$res.ccompiler"'
 				i++
 			}
+			'-checker-match-exhaustive-cutoff-limit' {
+				res.checker_match_exhaustive_cutoff_limit = cmdline.option(current_args,
+					arg, '10').int()
+				i++
+			}
 			'-o' {
 				res.out_name = cmdline.option(current_args, '-o', '')
 				if res.out_name.ends_with('.js') {