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Valk Richard Li
2020-01-04 22:15:29 +08:00
committed by GitHub
parent b0d5ad486d
commit 5da6b19c6b
3 changed files with 82 additions and 24 deletions
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version2.0/parse.bnf
+54 -21
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@@ -6,28 +6,61 @@
<number> ::= <token_number>
<string> ::= <token_string>
<nil> ::= <token_reserve_word_nil>
<id> ::= <token_identifier>
<dynamic_id> ::= <token_dynamic_id>
<vector> ::= <[> {<scalar> <,>} <]>
<hash> ::= <{> {(<id> | <string>) <:> <scalar> <,>} <}>
<scalar> ::=
<number>
| <nil>
| <string>
| <call_identifier>
| <calculation>
| <function>
| <(> <scalar> <)>
| <hash>
| <vector>
<calculation_expr> ::=
<or_expr> {<and> <or_expr>}
<or_expr> ::=
<unary_expr> {<or> <unary_expr>}
| <unary_expr> {<or> <additive_expr>}
| <additive_expr> {<or> <unary_expr>}
| <additive_expr> {<or> <additive_expr>}
<unary_expr> ::=
<-> <additive_expr>
| <!> <additive_expr>
<additive_expr> ::=
<multive_expr> {<+> <multive_expr>}
| <multive_expr> {<-> <multive_expr>}
| <multive_expr> {<~> <multive_expr>}
<multive_expr> ::=
<scalar> {<*> <scalar>}
| <scalar> {</> <scalar>}
<function> ::=
<func> [<(> <)>] <statement>
| <func> [<(> <)>] <{> {<statement> <;>} <}>
| <func> <(> {<id> <,>} {<id> <=> <scalar> <,>} {<dynamic_id>} <)> <statement>
| <func> <(> {<id> <,>} {<id> <=> <scalar> <,>} {<dynamic_id>} <)> <{> {<statement> <;>} <}>
<call_identifier> ::=
<scalar> { (<[> {<scalar> <,>} <]>) | (<[> <scalar> <:> [<scalar>] <]>) | (<.> <id>) | (<(> {<scalar> <,>} <)>) | (<(> {<id> <:> <scalar> <,>} <)>) }
| <id> { (<[> {<scalar> <,>} <]>) | (<[> <scalar> <:> [<scalar>] <]>) | (<.> <id>) | (<(> {<scalar> <,>} <)>) | (<(> {<id> <:> <scalar> <,>} <)>) }
| <func> <id>
| <func> <id> <(> <)> { (<[> {<scalar> <,>} <]>) | (<[> <scalar> <:> [<scalar>] <]>) | (<.> <id>) | (<(> {<scalar> <,>} <)>) | (<(> {<id> <:> <scalar> <,>} <)>) }
<calculation> ::=
<and_calc>
| <or_calc>
| <additive_calc>
| <multive_calc>
| <scalar>
<and_calc> ::=
<or_calc> {<and> <or_calc>}
<or_calc> ::=
<additive_calc> {<or> <additive_calc>}
<additive_calc> ::=
<multive_calc> {<+>|<->|<~> <multive_calc>}
<multive_calc> ::=
<scalar> {<*>|</> <scalar>}
<definition> ::=
<var> <id>
| <var> <id> <=> <scalar>
| <var> <(> {(<id>) | (<call_identifier>) <,>} <)> <=> <scalar>
| <(> <var> {(<id>) | (<call_identifier>) <,>} <)> <=> <scalar>
| <var> <(> {(<id>) | (<call_identifier>) <,>} <)> <=> <(> {<scalar> <,>} <)>
| <(> <var> {(<id>) | (<call_identifier>) <,>} <)> <=> <(> {<scalar> <,>} <)>
<assignment> ::=
<call_identifier> <=> <scalar>
| <(> {<call_identifier> <,>} <)> <=> <scalar>
| <(> {<call_identifier> <,>} <)> <=> <(> {<scalar> <,>} <)>
<loop_expr> ::=
<for_loop>
| <while_loop>
@@ -38,13 +71,13 @@
| <for> <(> [<statement>] <;> [<scalar>] <;> <statement> <)> <{> {<statement> <;>} <}>
<while_loop> ::=
<while> <(> <scalar> <)> <statement> [<;>]
| <while> <(> <scalar> <) <{> {<statement> <;>} <}>
| <while> <(> <scalar> <)> <{> {<statement> <;>} <}>
<forindex_loop> ::=
<forindex> <(> [<statement] <;> [<scalar>] <)> <statement> [<;>]
| <forindex> <(> [<statement] <;> [<scalar>] <) <{> {<statement> <;>} <}>
| <forindex> <(> [<statement] <;> [<scalar>] <)> <{> {<statement> <;>} <}>
<foreach_loop> ::=
<foreach> <(> [<statement] <;> [<scalar>] <)> <statement> [<;>]
| <foreach> <(> [<statement] <;> [<scalar>] <) <{> {<statement> <;>} <}>
| <foreach> <(> [<statement] <;> [<scalar>] <)> <{> {<statement> <;>} <}>
<choose_expr> ::= <choose_expr_if> {<choose_expr_elsif>} [<choose_expr_else>]
<choose_expr_if> ::=
@@ -57,7 +90,7 @@
| <else> <if> <(> <scalar> <)> <{> {<statement> <;>} <}>
<choose_expr_else> ::=
<else> <statement> [<;>]
| <else> {<statement> <;>} <}>
| <else> <{> {<statement> <;>} <}>
<continue_expr> ::= <continue>
<break_expr> ::= <break>