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author | 2017-02-15 14:30:39 -0500 | |
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committer | 2017-02-15 14:37:01 -0500 | |
commit | d8861011dc81160df81979d2bed9721447517f45 (patch) | |
tree | 6aaf805a83ad8be93bd9772a2b2e517770c67b72 /sli/common/src/main/antlr4/org/openecomp/sdnc/sli/ExprGrammar.g4 | |
parent | 57b0ded28b8c6477ca0df13a05eafb392f6fa82e (diff) |
Initial commit for OpenECOMP SDN-C N-C core
Change-Id: I30c52795ab821c4fdd18b55d202f10a76a01acfa
Signed-off-by: Dan Timoney <dtimoney@att.com>
Diffstat (limited to 'sli/common/src/main/antlr4/org/openecomp/sdnc/sli/ExprGrammar.g4')
-rwxr-xr-x | sli/common/src/main/antlr4/org/openecomp/sdnc/sli/ExprGrammar.g4 | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/sli/common/src/main/antlr4/org/openecomp/sdnc/sli/ExprGrammar.g4 b/sli/common/src/main/antlr4/org/openecomp/sdnc/sli/ExprGrammar.g4 new file mode 100755 index 0000000..51f4016 --- /dev/null +++ b/sli/common/src/main/antlr4/org/openecomp/sdnc/sli/ExprGrammar.g4 @@ -0,0 +1,66 @@ +grammar ExprGrammar; + +options { + language = Java; +} + + +COMPAREOP : '==' | '!=' | '>' | '<' | '>=' | '<='; + +RELOP : 'and' | 'or'; + +ADDOP : '+' | '-'; + +MULTOP : '/' | '*'; + +NUMBER : ('0'..'9')+; + +STRING : '\'' ~[\']* '\''; + +IDENTIFIER : ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_'|'-')*; + +// CONTEXT_VAR : '$' IDENTIFIER; + +WS: [ \n\t\r]+ -> skip; + +constant : NUMBER | STRING ; + +variableLead : ('$')? variableTerm ; + +variableTerm : IDENTIFIER ('[' expr ']')? ; + +variable : variableLead ('.' variableTerm)* ('.')?; + +// variable : CONTEXT_VAR ( '[' expr ']' )? ('.' IDENTIFIER )? ; + +atom : constant | variable; + + +expr : atom + | parenExpr + | multExpr + | addExpr + | compareExpr + | relExpr + | funcExpr; + +parenExpr : '(' expr ')'; + +term : atom | parenExpr | funcExpr; + +multExpr : term (MULTOP term)*; + +addExpr : multExpr (ADDOP multExpr)*; + +compareExpr : addExpr COMPAREOP addExpr; + +relExpr : compareExpr (RELOP expr)*; + +funcExpr : IDENTIFIER '(' expr (',' expr)* ')'; + + + + + + + |