xxq250/Nasal-Interpreter
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Valk Richard Li
2020-01-19 21:30:04 +08:00
committed by GitHub
parent d045b6f335
commit ada02fc3bb
3 changed files with 321 additions and 107 deletions
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version2.0/parse.ebnf
+8 -8
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@@ -26,6 +26,7 @@
| <vector>
| <func> <id>
| <function>
| <assignment>
| '(' <calculation> ')'
| <scalar> { ('[' {<calculation> ','} ']') | ('[' <calculation> ':' [<calculation>] ']') | ('.' <id>) | ('(' {<calculation> ','} ')') | ('(' {<id> ':' <calculation> ','} ')') }
;
@@ -45,16 +46,15 @@
| [('-' | '!')] <scalar>
| <calculation> '?' <calculation> ':' <calculation>
;
<and_calc> =<or_calc> {<and> <or_calc>} ;
<or_calc> =<additive_calc> {<or> <additive_calc>} ;
<additive_calc> =<multive_calc> {('+' | '-' | '~') <multive_calc>} ;
<multive_calc> =[('-' | '!')] <scalar> {[('-' | '!')] <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>};
(* this definition is also used in for loop*)
<definition> =
<var> <id> '=' <scalar>
| <var> '(' {(<id>) | (<call_identifier>) ','} ')' '=' (<scalar> | '(' {<scalar> ','} ')')
| '(' <var> {(<id>) | (<call_identifier>) ','} ')' '=' (<scalar> | '(' {<scalar> ','} ')')
| <var> '(' {<id> ','} ')' '=' (<scalar> | '(' {<scalar> ','} ')')
;
<forindex_loop_definition> =
<var> <id>
@@ -63,8 +63,8 @@
<var> <id>
;
<assignment> =
<scalar> '=' <calculation>
| '(' {<scalar> ','} ')' '=' (<calculation> | '(' {<calculation> ','} ')')
<scalar> ('=' | '+=' | '-=' | '*=' | '/=' | '~=') <calculation>
| '(' {<scalar> ','} ')' ('=' | '+=' | '-=' | '*=' | '/=' | '~=') (<calculation> | '(' {<calculation> ','} ')')
;
<loop_expr> =
<for_loop>