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Fix errors in ebnf | add assignment in parser

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Valk Richard Li
2019-08-14 14:21:38 +08:00
committed by GitHub
parent 62e1837704
commit 6ea09de3bc
2 changed files with 95 additions and 24 deletions
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version0.3/ebnf.cpp
+20 -20
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@@ -9,38 +9,38 @@
<string> ::= STRING
//scalar
<use_identifier> ::= <identifier>|<array_search>|<hash_search>
<scalar> ::= <number>|<string>|<array>|<hash>|<use_identifier>|<use_function>
<identifier> ::= <identifier>|<array_search>|<hash_search>
<identifiers> ::= <identifier> <,> <identifier>
<identifiers> ::= <identifiers> <,> <identifier>
<scalar> ::= <number>|<string>|<array>|<hash>|<use_function>
<scalars> ::= <scalar> <,> <scalar>
<scalars> ::= <scalars> <,> <scalar>
//array
<array_search> ::= <use_identifier> <[> <number> <]>
<array> ::= <[> <scalar>|<scalars> <]>
<array_search> ::= <identifier> <[> <number> <]>
<array> ::= <[> <scalar>|<scalars>|<identifier>|<identifiers> <]>
//hash
<hash_search> ::= <use_identifier> <.> <use_identifier>|<use_function>
<hash_member> ::= <identifier> <:> <scalar>|<function>
<hash_search> ::= <identifier> <.> <identifier>|<use_function>
<hash_member> ::= <identifier> <:> <identifier>|<scalar>|<function>
<hash_members> ::= <hash_member> <,> <hash_member>
<hash_members> ::= <hash_members> <,> <hash_member>
<hash> ::= <{> <hash_member>|<hash_members> <}>
//function
<parameter> ::= <scalar>
<parameters> ::= <scalars>
<function> ::= <func> <(> <parameter>|<parameters> <)> <{> <statement>|<statements> <}>
<use_function> ::= <use_identifier> <(> <parameter>|<parameters> <)>
<function> ::= <func> <(> <identifier>|<identifiers> <)> <{> <statement>|<statements> <}>
<use_function> ::= <use_identifier> <(> <scalar>|<scalars>|<identifier>|<identifiers> <)>
//definition & assignment
<definition> ::= <var> <identifier> <=> <scalar>|<function> <;>
<assignment> ::= <identifier> <=>|<+=>|<-=>|<*=>|</=>|<~=> <scalar> <;>
<definition> ::= <var> <identifier> <=> <scalar>|<identifier>|<function> <;>
<assignment> ::= <identifier> <=>|<+=>|<-=>|<*=>|</=>|<~=> <scalar>|<identifier> <;>
//calculation
<add> ::= <scalar> <+> <scalar>
<sub> ::= <scalar> <-> <scalar>
<mul> ::= <scalar> <*> <scalar>
<div> ::= <scalar> </> <scalar>
<link> ::= <scalar> <~> <scalar>
<add> ::= <scalar>|<identifier> <+> <scalar>|<identifier>
<sub> ::= <scalar>|<identifier> <-> <scalar>|<identifier>
<mul> ::= <scalar>|<identifier> <*> <scalar>|<identifier>
<div> ::= <scalar>|<identifier> </> <scalar>|<identifier>
<link> ::= <scalar>|<identifier> <~> <scalar>|<identifier>
<calc> ::= <add>|<sub>|<mul>|<div>
<calcs> ::= <(> <calc>|<calcs> <)>
<calcs> ::= <calc> <+>|<->|<*>|</>|<~> <calc>
@@ -55,8 +55,8 @@
//if else
<condition_link_operator> ::= <and>|<or>|<!>
<cmp_operator> ::= <==>|<>>|<<>|<<=>|<>=>|<!=>|<condition_link_operator>
<condition> ::= <scalar>
<condition> ::= <scalar> <cmp_operator> <scalar>
<condition> ::= <scalar>|<identifier>
<condition> ::= <scalar>|<identifier> <cmp_operator> <scalar>|<identifier>
<conditions> ::= <(> <condition> <)> <condition_link_operator> <(> <condition> <)>
<conditions> ::= <(> <conditions> <)> <condition_link_operator> <(> <condition> <)>
<conditions> ::= <(> <condition> <)> <condition_link_operator> <(> <conditions> <)>
@@ -82,7 +82,7 @@
<choose> ::= <_if> <else_ifs> <_else>
//statement
<func_return> ::= <return> <scalar>
<func_return> ::= <return> <scalar>|<identifier>
<loop_continue> ::= <continue>
<loop_break> ::= <break>
<statement> ::= <definition>|<assignment>|<loop>|<choose>|<use_function>|<func_return>|<loop_continue>|<loop_break> <;>