checker, cgen: cleanup comptime var marking on checker, optimizing th…

…e way it is checked on cgen (#23134)

vlib/v/ast/ast.v

@@ -1073,6 +1073,7 @@ pub mut:
 	is_mut         bool // if mut *token* is before name. Use `is_mut()` to lookup mut variable
 	or_expr        OrExpr
 	concrete_types []Type
+	ct_expr        bool // is it a comptime expr?
 }
 
 // full_name returns the name of the ident, prefixed with the module name

vlib/v/checker/checker.v

@@ -3052,8 +3052,8 @@ pub fn (mut c Checker) expr(mut node ast.Expr) ast.Type {
 				}
 				c.table.used_features.print_types[ast.int_type_idx] = true
 			}
-			if c.comptime.inside_comptime_for && node.expr is ast.Ident {
-				if c.comptime.is_comptime_var(node.expr) {
+			if c.comptime.inside_comptime_for && mut node.expr is ast.Ident {
+				if node.expr.ct_expr {
 					node.expr_type = c.comptime.get_type(node.expr as ast.Ident)
 				} else if (node.expr as ast.Ident).name in c.comptime.type_map {
 					node.expr_type = c.comptime.type_map[(node.expr as ast.Ident).name]
@@ -4072,6 +4072,7 @@ fn (mut c Checker) ident(mut node ast.Ident) ast.Type {
 						obj.typ = typ
 					}
 					node.obj = obj
+					node.ct_expr = obj.ct_type_var != .no_comptime
 					// unwrap option (`println(x)`)
 					if is_option {
 						if node.or_expr.kind == .absent {

vlib/v/checker/for.v

@@ -94,8 +94,7 @@ fn (mut c Checker) for_in_stmt(mut node ast.ForInStmt) {
 				node.cond.pos())
 		}
 		mut is_comptime := false
-		if (node.cond is ast.Ident && c.comptime.is_comptime_var(node.cond))
-			|| node.cond is ast.ComptimeSelector {
+		if (node.cond is ast.Ident && node.cond.ct_expr) || node.cond is ast.ComptimeSelector {
 			ctyp := c.comptime.get_type(node.cond)
 			if ctyp != ast.void_type {
 				is_comptime = true

vlib/v/checker/if.v

@@ -579,7 +579,7 @@ fn (mut c Checker) smartcast_if_conds(mut node ast.Expr, mut scope ast.Scope, co
 					scope, false, true)
 			}
 		} else if node.op == .key_is {
-			if node.left is ast.Ident && c.comptime.is_comptime_var(node.left) {
+			if node.left is ast.Ident && node.left.ct_expr {
 				node.left_type = c.comptime.get_type(node.left)
 			} else {
 				node.left_type = c.expr(mut node.left)

vlib/v/checker/infix.v

@@ -784,7 +784,7 @@ fn (mut c Checker) infix_expr(mut node ast.InfixExpr) ast.Type {
 						c.error('`${op}` can only be used to test for none in sql', node.pos)
 					}
 				} else if left_sym.kind !in [.interface, .sum_type]
-					&& !c.comptime.is_comptime_var(node.left) {
+					&& !c.comptime.is_comptime(node.left) {
 					c.error('`${op}` can only be used with interfaces and sum types',
 						node.pos) // can be used in sql too, but keep err simple
 				} else if mut left_sym.info is ast.SumType {

vlib/v/checker/postfix.v

@@ -25,7 +25,7 @@ fn (mut c Checker) postfix_expr(mut node ast.PostfixExpr) ast.Type {
 	}
 	if !(typ_sym.is_number() || ((c.inside_unsafe || c.pref.translated) && is_non_void_pointer)) {
 		if c.comptime.comptime_for_field_var != '' {
-			if c.comptime.is_comptime_var(node.expr) || node.expr is ast.ComptimeSelector {
+			if c.comptime.is_comptime(node.expr) || node.expr is ast.ComptimeSelector {
 				node.typ = c.unwrap_generic(c.comptime.get_type(node.expr))
 				if node.op == .question {
 					node.typ = node.typ.clear_flag(.option)

vlib/v/checker/str.v

@@ -85,7 +85,7 @@ fn (mut c Checker) string_inter_lit(mut node ast.StringInterLiteral) ast.Type {
 					c.error('no known default format for type `${c.table.get_type_name(ftyp)}`',
 						node.fmt_poss[i])
 				}
-			} else if c.comptime.is_comptime_var(expr) && c.comptime.get_type(expr) != ast.void_type {
+			} else if c.comptime.is_comptime(expr) && c.comptime.get_type(expr) != ast.void_type {
 				// still `_` placeholder for comptime variable without specifier
 				node.need_fmts[i] = false
 			} else {

vlib/v/comptime/comptimeinfo.v

@@ -31,15 +31,29 @@ pub fn (mut ct ComptimeInfo) get_comptime_selector_key_type(val ast.ComptimeSele
 // is_comptime_expr checks if the node is related to a comptime expr
 @[inline]
 pub fn (mut ct ComptimeInfo) is_comptime_expr(node ast.Expr) bool {
-	return (node is ast.Ident && ct.get_ct_type_var(node) != .no_comptime)
+	return (node is ast.Ident && node.ct_expr)
 		|| (node is ast.IndexExpr && ct.is_comptime_expr(node.left))
 		|| node is ast.ComptimeSelector
 }
 
-// is_comptime_var checks if the node is related to a comptime variable
+// is_comptime checks if the node is related to a comptime marked variable
 @[inline]
-pub fn (mut ct ComptimeInfo) is_comptime_var(node ast.Expr) bool {
-	return ct.get_ct_type_var(node) != .no_comptime
+pub fn (mut ct ComptimeInfo) is_comptime(node ast.Expr) bool {
+	return match node {
+		ast.Ident {
+			node.ct_expr
+		}
+		ast.IndexExpr {
+			if node.left is ast.Ident {
+				node.left.ct_expr
+			} else {
+				false
+			}
+		}
+		else {
+			false
+		}
+	}
 }
 
 // is_comptime_variant_var checks if the node is related to a comptime variant variable
@@ -89,7 +103,7 @@ pub fn (mut ct ComptimeInfo) get_expr_type_or_default(node ast.Expr, default_typ
 pub fn (mut ct ComptimeInfo) get_type_or_default(node ast.Expr, default_typ ast.Type) ast.Type {
 	match node {
 		ast.Ident {
-			if ct.is_comptime_var(node) {
+			if node.ct_expr {
 				ctyp := ct.get_type(node)
 				return if ctyp != ast.void_type { ctyp } else { default_typ }
 			}
@@ -154,7 +168,7 @@ pub fn (mut ct ComptimeInfo) get_type(node ast.Expr) ast.Type {
 			return ast.void_type
 		}
 		return f.return_type
-	} else if node is ast.IndexExpr && ct.is_comptime_var(node.left) {
+	} else if node is ast.IndexExpr && ct.is_comptime(node.left) {
 		nltype := ct.get_type(node.left)
 		nltype_unwrapped := ct.resolver.unwrap_generic(nltype)
 		return ct.table.value_type(nltype_unwrapped)
@@ -352,16 +366,16 @@ pub fn (mut ct ComptimeInfo) unwrap_generic_expr(expr ast.Expr, default_typ ast.
 			return expr.typ
 		}
 		ast.InfixExpr {
-			if ct.is_comptime_var(expr.left) {
+			if ct.is_comptime(expr.left) {
 				return ct.resolver.unwrap_generic(ct.get_type(expr.left))
 			}
-			if ct.is_comptime_var(expr.right) {
+			if ct.is_comptime(expr.right) {
 				return ct.resolver.unwrap_generic(ct.get_type(expr.right))
 			}
 			return default_typ
 		}
 		ast.Ident {
-			return if ct.is_comptime_var(expr) {
+			return if expr.ct_expr {
 				ct.resolver.unwrap_generic(ct.get_type(expr))
 			} else {
 				default_typ

vlib/v/gen/c/array.v

@@ -562,8 +562,7 @@ fn (mut g Gen) gen_array_map(node ast.CallExpr) {
 		}
 		ast.CastExpr {
 			// value.map(Type(it)) when `value` is a comptime var
-			if expr.expr is ast.Ident && node.left is ast.Ident
-				&& g.comptime.is_comptime_var(node.left) {
+			if expr.expr is ast.Ident && node.left is ast.Ident && node.left.ct_expr {
 				ctyp := g.comptime.get_type(node.left)
 				if ctyp != ast.void_type {
 					expr.expr_type = g.table.value_type(ctyp)

vlib/v/gen/c/assign.v

@@ -292,7 +292,7 @@ fn (mut g Gen) assign_stmt(node_ ast.AssignStmt) {
 				}
 			}
 			if mut left.obj is ast.Var {
-				if val is ast.Ident && g.comptime.is_comptime_var(val) {
+				if val is ast.Ident && val.ct_expr {
 					ctyp := g.unwrap_generic(g.comptime.get_type(val))
 					if ctyp != ast.void_type {
 						var_type = ctyp

vlib/v/gen/c/cgen.v

@@ -3769,7 +3769,7 @@ fn (mut g Gen) expr(node_ ast.Expr) {
 				if mut node.expr is ast.ComptimeSelector && node.expr.left is ast.Ident {
 					// val.$(field.name)?
 					expr_str = '${node.expr.left.str()}.${g.comptime.comptime_for_field_value.name}'
-				} else if mut node.expr is ast.Ident && g.comptime.is_comptime_var(node.expr) {
+				} else if mut node.expr is ast.Ident && node.expr.ct_expr {
 					// val?
 					expr_str = node.expr.name
 				}

vlib/v/gen/c/comptime.v

@@ -1071,7 +1071,7 @@ fn (mut g Gen) comptime_for(node ast.ComptimeFor) {
 
 // comptime_selector_type computes the selector type from an comptime var
 fn (mut g Gen) comptime_selector_type(node ast.SelectorExpr) ast.Type {
-	if !(node.expr is ast.Ident && g.comptime.is_comptime_var(node.expr)) {
+	if !(node.expr is ast.Ident && node.expr.ct_expr) {
 		return node.expr_type
 	}
 	prevent_sum_type_unwrapping_once := g.prevent_sum_type_unwrapping_once

vlib/v/gen/c/dumpexpr.v

@@ -44,12 +44,12 @@ fn (mut g Gen) dump_expr(node ast.DumpExpr) {
 				}
 			}
 		}
-	} else if node.expr is ast.Ident && g.comptime.is_comptime_var(node.expr) {
+	} else if node.expr is ast.Ident && node.expr.ct_expr {
 		expr_type = g.comptime.get_type(node.expr)
 		name = g.styp(g.unwrap_generic(expr_type.clear_flags(.shared_f, .result))).replace('*',
 			'')
 	} else if node.expr is ast.SelectorExpr && node.expr.expr is ast.Ident
-		&& g.comptime.is_comptime_var(node.expr.expr) {
+		&& (node.expr.expr as ast.Ident).ct_expr {
 		expr_type = g.comptime_selector_type(node.expr)
 		name = g.styp(g.unwrap_generic(expr_type.clear_flags(.shared_f, .result))).replace('*',
 			'')

vlib/v/gen/c/fn.v

@@ -2220,7 +2220,7 @@ fn (mut g Gen) fn_call(node ast.CallExpr) {
 	mut print_auto_str := false
 	if is_print && (node.args[0].typ != ast.string_type
 		|| g.comptime.comptime_for_method != unsafe { nil }
-		|| g.comptime.is_comptime_var(node.args[0].expr)) {
+		|| g.comptime.is_comptime(node.args[0].expr)) {
 		g.inside_interface_deref = true
 		defer {
 			g.inside_interface_deref = false

vlib/v/gen/c/for.v

@@ -142,8 +142,7 @@ fn (mut g Gen) for_in_stmt(node_ ast.ForInStmt) {
 	mut node := unsafe { node_ }
 	mut is_comptime := false
 
-	if (node.cond is ast.Ident && g.comptime.is_comptime_var(node.cond))
-		|| node.cond is ast.ComptimeSelector {
+	if (node.cond is ast.Ident && node.cond.ct_expr) || node.cond is ast.ComptimeSelector {
 		mut unwrapped_typ := g.unwrap_generic(node.cond_type)
 		ctyp := g.comptime.get_type(node.cond)
 		if ctyp != ast.void_type {
@@ -222,7 +221,7 @@ fn (mut g Gen) for_in_stmt(node_ ast.ForInStmt) {
 		mut val_sym := g.table.sym(node.val_type)
 		op_field := g.dot_or_ptr(node.cond_type)
 
-		if is_comptime && g.comptime.is_comptime_var(node.cond) {
+		if is_comptime && g.comptime.is_comptime(node.cond) {
 			mut unwrapped_typ := g.unwrap_generic(node.cond_type)
 			ctyp := g.unwrap_generic(g.comptime.get_type(node.cond))
 			if ctyp != ast.void_type {

vlib/v/gen/c/str_intp.v

@@ -240,7 +240,7 @@ fn (mut g Gen) string_inter_literal(node ast.StringInterLiteral) {
 	mut node_ := unsafe { node }
 	mut fmts := node_.fmts.clone()
 	for i, mut expr in node_.exprs {
-		if g.comptime.is_comptime_var(expr) {
+		if g.comptime.is_comptime(expr) {
 			ctyp := g.comptime.get_type(expr)
 			if ctyp != ast.void_type {
 				node_.expr_types[i] = ctyp