tree-sitter-cmake.ebnf

//
// From tree-sitter-cmake/src/grammar.json
//
//
// EBNF to generate railroad diagram at 
//      (IPV6) https://www.bottlecaps.de/rr/ui
//      (IPV4) https://rr.red-dove.com/ui
//

source_file ::=
	 _untrimmed_command_invocation*

escape_sequence ::=
	 _escape_identity
	| _escape_encoded
	| _escape_semicolon

_escape_identity ::=
	 '\'[^A-Za-z0-9;]

_escape_encoded ::=
	 '\t'
	| '\r'
	| '\n'

_escape_semicolon ::=
	 ';'
	| '\;'

variable ::=
	 ( [a-zA-Z0-9/_.+-] | escape_sequence | variable_ref )+

variable_ref ::=
	 normal_var
	| env_var
	| cache_var

normal_var ::=
	 '$' '{' variable '}'

env_var ::=
	 '$' 'ENV' '{' variable '}'

cache_var ::=
	 '$' 'CACHE' '{' variable '}'

gen_exp ::=
	 '$' '<' _gen_exp_content? '>'

_gen_exp_content ::=
	 argument _gen_exp_arguments?

_gen_exp_arguments ::=
	 ':' ( argument [,;]? )*

argument ::=
	 bracket_argument
	| quoted_argument
	| unquoted_argument

_untrimmed_argument ::=
	 [ #x09#x0A#x0B#x0C#x0D]
	| bracket_comment
	| line_comment
	| argument
	| _paren_argument

_paren_argument ::=
	 '(' _untrimmed_argument* ')'

quoted_argument ::=
	 '"'  quoted_element? '"' 

quoted_element ::=
	 ( variable_ref | gen_exp | _quoted_text | escape_sequence )+

_quoted_text ::=
	 ( '$' | [^\"] )+

unquoted_argument ::=
	 ( variable_ref | gen_exp | _unquoted_text | escape_sequence )+

_unquoted_text ::=
	 ( '$' | [^()#x23"\] )+

body ::=
	 _untrimmed_command_invocation+

argument_list ::=
	 _untrimmed_argument+

if_command ::=
	 if [#x09 ]* '(' argument_list ')'

elseif_command ::=
	 elseif [#x09 ]* '(' argument_list ')'

else_command ::=
	 else [#x09 ]* '(' argument_list? ')'

endif_command ::=
	 endif [#x09 ]* '(' argument_list? ')'

if_condition ::=
	 if_command ( body | elseif_command | else_command )* endif_command

foreach_command ::=
	 foreach [#x09 ]* '(' argument_list ')'

endforeach_command ::=
	 endforeach [#x09 ]* '(' argument? ')'

foreach_loop ::=
	 foreach_command body endforeach_command

while_command ::=
	 while [#x09 ]* '(' argument_list ')'

endwhile_command ::=
	 endwhile [#x09 ]* '(' ( [ #x09#x0A#x0B#x0C#x0D]* argument [ #x09#x0A#x0B#x0C#x0D]* )? ')'

while_loop ::=
	 while_command body endwhile_command

function_command ::=
	 function [#x09 ]* '(' argument_list ')'

endfunction_command ::=
	 endfunction [#x09 ]* '(' argument_list? ')'

function_def ::=
	 function_command body endfunction_command

macro_command ::=
	 macro [#x09 ]* '(' argument_list ')'

endmacro_command ::=
	 endmacro [#x09 ]* '(' argument_list? ')'

macro_def ::=
	 macro_command body endmacro_command

block_command ::=
	 block [#x09 ]* '(' argument_list ')'

endblock_command ::=
	 endblock [#x09 ]* '(' argument_list? ')'

block_def ::=
	 block_command body endblock_command

normal_command ::=
	 identifier [#x09 ]* '(' argument_list? ')'

_command_invocation ::=
	 normal_command
	| if_condition
	| foreach_loop
	| while_loop
	| function_def
	| macro_def
	| block_def

_untrimmed_command_invocation ::=
	 [ #x09#x0A#x0B#x0C#x0D]
	| bracket_comment
	| line_comment
	| _command_invocation

if ::=
	 [iI][fF]

elseif ::=
	 [eE][lL][sS][eE][iI][fF]

else ::=
	 [eE][lL][sS][eE]

endif ::=
	 [eE][nN][dD][iI][fF]

foreach ::=
	 [fF][oO][rR][eE][aA][cC][hH]

endforeach ::=
	 [eE][nN][dD][fF][oO][rR][eE][aA][cC][hH]

while ::=
	 [wW][hH][iI][lL][eE]

endwhile ::=
	 [eE][nN][dD][wW][hH][iI][lL][eE]

function ::=
	 [fF][uU][nN][cC][tT][iI][oO][nN]

endfunction ::=
	 [eE][nN][dD][fF][uU][nN][cC][tT][iI][oO][nN]

macro ::=
	 [mM][aA][cC][rR][oO]

endmacro ::=
	 [eE][nN][dD][mM][aA][cC][rR][oO]

block ::=
	 [bB][lL][oO][cC][kK]

endblock ::=
	 [eE][nN][dD][bB][lL][oO][cC][kK]

identifier ::=
	 [A-Za-z_][A-Za-z0-9_]*

integer ::=
	 [+-]*[0-9]+