checker: check for_in_map using one variable error
parent
10da871743
commit
85723e3799
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@ -1472,6 +1472,9 @@ fn (mut c Checker) stmt(node ast.Stmt) {
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} else {
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} else {
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mut scope := c.file.scope.innermost(it.pos.pos)
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mut scope := c.file.scope.innermost(it.pos.pos)
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sym := c.table.get_type_symbol(typ)
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sym := c.table.get_type_symbol(typ)
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if sym.kind == .map && !(it.key_var.len > 0 && it.val_var.len > 0) {
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c.error('for in: cannot use one variable in map', it.pos)
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}
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if it.key_var.len > 0 {
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if it.key_var.len > 0 {
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key_type := match sym.kind {
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key_type := match sym.kind {
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.map { sym.map_info().key_type }
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.map { sym.map_info().key_type }
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@ -0,0 +1,7 @@
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vlib/v/checker/tests/for_in_map_one_variable_err.v:3:6: error: for in: cannot use one variable in map
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1 | fn main() {
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2 | kvs := {'foo':'bar'}
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3 | for k in kvs {
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| ^
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4 | println('$k')
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5 | }
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@ -0,0 +1,6 @@
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fn main() {
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kvs := {'foo':'bar'}
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for k in kvs {
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println('$k')
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}
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}
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