antlr4 - How to make an "global parser rule"? -

i'm building grammar parsing quake iii shaders antlr4.

here's exemple of shader:

textures/liquids/lava-example {     deformvertexes wave sin 0 3 0 0.1     q3map_tesssize 64     surfaceparm lava     qer_editorimage textures/common/lava.tga     {         map textures/common/lava.tga     } } 

as can see, structure is:

shadername {     directive     directive     //....     {         directive         //...     } } 

my question

as can see, directive composed key , parameters. keys , parameters known (more 100 keys possible). wonder how set global rule directive (key + parameters) , specify of them beside of it. moreover, if can separate of them in different files keeping clean grammars, better.

what have now

parser grammar shaderparser;  options {   tokenvocab=shaderlexer;  }  shaderlist     : shader+     ;  shader     : shadername lbracket directive* stage* rbracket     ;  shadername     : path compiletime?     ;  stage     : lbracket directive* rbracket     ;  directive     : key parameter?     | key dquote parameter dquote     | key squote parameter squote     ;  key     : word     ;  parameter     : word      | integer      | double     | path      ; 

the directive, key , parameter (a single 1 testing) rules getting main grammar.

thanks help!

the grammar seems need newlines statement separators. should add them @ end of each directive. parameters can match grammar 1 @ most.

shader     : shadername newline       lbracket newline       directive*        stage*        rbracket newline?        eof     ;  shadername     : path compiletime?     ;  stage     : lbracket newline         directive*        rbracket newline     ;  directive     : key maybequotedparameter* newline     ;  maybequotedparameter        : parameter?     | dquote parameter dquote     | squote parameter squote             ;  key     : word     ;  parameter     : word      | integer      | double     | path      ;