diff options
Diffstat (limited to 'example/math_expression/rpn.go')
| -rw-r--r-- | example/math_expression/rpn.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/example/math_expression/rpn.go b/example/math_expression/rpn.go index b65983d..84de59c 100644 --- a/example/math_expression/rpn.go +++ b/example/math_expression/rpn.go @@ -1,3 +1,5 @@ +// +build example + package main // Helper functions to convert infix notation to RPN and calculates expression result. @@ -10,6 +12,15 @@ import ( "github.com/neonxp/unilex" ) +var opPriority = map[string]int{ + "^": 3, + "!": 3, + "*": 2, + "/": 2, + "+": 1, + "-": 1, +} + func infixToRPNotation(l *unilex.Lexer) []unilex.Lexem { output := []unilex.Lexem{} stack := lexemStack{} |