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|
num = {
hex
| oct
| binary
| float
}
float = @{ int ~ ( "." ~ ASCII_DIGIT*)? ~ (^"e" ~ int)? }
int = { "-"? ~ ASCII_DIGIT+ }
hex = @{ "0x" ~ ASCII_HEX_DIGIT+ }
oct = @{ "0o" ~ ASCII_OCT_DIGIT+ }
binary = @{ "0b" ~ ASCII_BIN_DIGIT+ }
infix = _{ add | sub | mul | div | modulo }
add = { "+" }
sub = { "-" }
modulo = { "%" | "mod" }
mul = { "*" }
div = { "/" }
tight_infix = _{ dice | pow }
dice = { "d" }
pow = { "^" }
trig = _{ sin | cos | tan | asin | acos | atan }
sin = { "sin" }
cos = { "cos" }
tan = { "tan" }
asin = { "asin" }
acos = { "acos" }
atan = { "atan" }
htrig = _{ sinh | cosh | tanh | asinh | acosh | atanh }
sinh = { "sinh" }
cosh = { "cosh" }
tanh = { "tanh" }
asinh = { "asinh" }
acosh = { "acosh" }
atanh = { "atanh" }
unary_prefix = _{ log | sqrt | sgn | htrig | trig | exp | abs | ceil | floor | round }
log = { "log" | "ln" }
sqrt = { "sqrt" }
sgn = { "sgn" }
exp = { "exp" }
abs = { "abs" }
ceil = { "ceil" }
floor = { "floor" }
round = { "round" }
binary_prefix = _{ min | max | atan2 }
min = { "min" }
max = { "max" }
atan2 = { "atan2" }
suffix = _{ factorial }
factorial = { "!" }
term = _{ num | "(" ~ expr ~ ")" }
suffix_expr = { term ~ suffix }
unary_expr = ${ unary_prefix ~ ws+ ~ outfix_expr }
binary_expr = ${ binary_prefix ~ ws+ ~ outfix_expr ~ ws+ ~ outfix_expr }
tight = _{ (suffix_expr | term) ~ (tight_infix ~ tight)* }
expr = { outfix_expr ~ (infix ~ outfix_expr)* }
outfix_expr = _{
tight |
binary_expr |
unary_expr
}
calc = _{ SOI ~ expr ~ EOI }
ws = _{ " " | "\t" | "\n" }
WHITESPACE = _{ ws }
|
