58 lines
1.2 KiB
Plaintext
58 lines
1.2 KiB
Plaintext
import string
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import vector
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import set
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import symbol
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import regex
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obj grammer (Object) {
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var rules: vector::vector<rule>
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var regexs: set::set<regex>
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fun construct(): grammer* {
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rules.construct()
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regexs.construct()
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}
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fun copy_construct(old: grammer*) {
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rules.copy_construct(&old->rules)
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regexs.copy_construct(&old->regexs)
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}
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fun operator=(other: grammer) {
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destruct()
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copy_construct(&other)
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}
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fun destruct() {
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rules.destruct()
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regexs.destruct()
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}
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}
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obj rule (Object) {
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var lhs: symbol::symbol
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var rhs: vector::vector<symbol::symbol>
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var position: int
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var lookahead: set::set<symbol::symbol>
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fun construct(): rule* {
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lhs.construct()
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rhs.construct()
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position = 0
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lookahead.construct()
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}
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fun copy_construct(old: rule*) {
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lhs.copy_construct(&other->lhs)
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rhs.copy_construct(&other->rhs)
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position = other->position
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lookahead.copy_construct(&other->lookahead)
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}
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fun operator=(other: rule) {
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destruct()
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copy_construct(&other)
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}
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fun destruct() {
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lhs.destruct()
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rhs.destruct()
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lookahead.destruct()
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}
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}
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