set max module depth to 5
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			@ -80,8 +80,8 @@ pub:
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}
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const (
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	MaxModuleDepth = 4
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	Reserved_Types = {
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	max_module_depth = 5
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	reserved_types = {
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		'i8' : true, 'i16' : true, 'int' : true, 'i64' : true, 'i128' : true,
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		'byte' : true, 'u16' : true, 'u32' : true, 'u64' : true, 'u128' : true,
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		'f32' : true, 'f64' : true,
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			@ -608,8 +608,8 @@ fn (p mut Parser) import_statement() {
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		mod_alias = submodule
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		mod += '.' + submodule
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		depth++
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		if depth > MaxModuleDepth {
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			p.error('module depth of $MaxModuleDepth exceeded: $mod')
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		if depth > max_module_depth {
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			p.error('module depth of $max_module_depth exceeded: $mod')
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		}
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	}
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	// aliasing (import encoding.base64 as b64)
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			@ -807,7 +807,7 @@ fn (p mut Parser) check_string() string {
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}
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fn (p mut Parser) check_not_reserved () {
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	if Reserved_Types[p.lit] {
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	if reserved_types[p.lit] {
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		p.error('`$p.lit` can\'t be used as name')
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	}
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}
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