4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
# File 'lib/xls_function/parse_rules/common.rb', line 4
def self.included(klass)
klass.class_eval do
rule(:space) { match('\s').repeat(1) }
rule(:space?) { space.maybe }
rule(:comma) { str(',') >> space? }
rule(:negative_sign) { str('-') }
rule(:number) { (negative_sign.maybe >> match['0-9\.'].repeat(1)).as(:number) >> space? }
rule(:true_expr) { (match['Tt'] >> match['Rr'] >> match['Uu'] >> match['Ee']).as(:true_expr) }
rule(:false_expr) { (match['Ff'] >> match['Aa'] >> match['Ll'] >> match['Ss'] >> match['Ee']).as(:false_expr) }
rule(:boolean) { true_expr | false_expr }
rule(:string) { str('"') >> match('[^"]').repeat.as(:string) >> str('"') >> space? }
rule(:variant) { match['a-zA-Z_'].repeat(1).as(:variant) >> space? }
rule(:lparen) { str('(') >> space? }
rule(:rparen) { str(')') >> space? }
rule(:identifier) { match['a-zA-Z'].repeat(1) }
rule(:arglist) { expression >> (comma >> expression).repeat }
rule(:function_call) { identifier.as(:identifier) >> lparen >> arglist.maybe.as(:arglist) >> rparen >> space? }
rule(:single_expression) { function_call | number | boolean | string | variant }
end
end
|