diff options
Diffstat (limited to 'examples/tutorial.nom')
| -rw-r--r-- | examples/tutorial.nom | 42 |
1 files changed, 14 insertions, 28 deletions
diff --git a/examples/tutorial.nom b/examples/tutorial.nom index 424148c..776f900 100644 --- a/examples/tutorial.nom +++ b/examples/tutorial.nom @@ -98,24 +98,18 @@ do: # Function definition: -rule: - say both %first and also %second -..=: +rule [say both %first and also %second] =: # Function arguments are accessed just like variables say %first say %second # The last line of a function is the return value -rule: - add %x and %y -..=: +rule [add %x and %y] =: %result =: %x + %y %result # Functions can use "return" to return a value early -rule: - first fibonacci above %n -..=: +rule [first fibonacci above %n] =: %f1 =: 0 %f2 =: 1 repeat: @@ -128,7 +122,7 @@ rule: say (first fibonacci above 10) # Functions can have aliases, which may or may not have the arguments in different order -rule: +rule [..] I hate %worse-things more than %better-things I think %worse-things are worse than %better-things I like %better-things more than %worse-things @@ -144,9 +138,7 @@ I think "chihuahuas" are worse than "corgis" say both "Hello" and also "again!" # Functions can even have their name at the end: -rule: - %what-she-said is what she said -..=: +rule [%what-she-said is what she said] =: say %what-she-said say "-- she said" @@ -154,9 +146,7 @@ rule: #.. The language only reserves []{}().,:;% as special characters, so functions and variables can have really funky names! -rule: - >> %foo-bar$$$^ --> %@@& _~-^-~_~-^ %1 ! -..=: +rule [>> %foo-bar$$$^ --> %@@& _~-^-~_~-^ %1 !] =: say %foo-bar$$$^ say %@@& say %1 @@ -166,9 +156,7 @@ rule: # Math and logic operations are just treated the same as function calls in the syntax say (2 + 3) # So it's easy to define your own operators -rule: - %a ++ %b -..=: +rule [%a ++ %b] =: 2 * (%a + %b) say (2 ++ 3) @@ -213,7 +201,7 @@ say both ".." ..and also.. "-- Abraham Lincoln" -rule: my favorite number ..=: 21 + 2 +rule [my favorite number] =: 21 + 2 # Subexpressions are wrapped in parentheses: say (my favorite number) @@ -231,9 +219,7 @@ say ".." number ..\, but this time it uses an indented subexpression! -rule: - sing %starting-bottles bottles of beer -..=: +rule [sing %starting-bottles bottles of beer] =: for %n in (%starting-bottles down through 0): say ".." |\%n if (%n > 0) else "No more"\ \"bottle" if (%n == 1) else "bottles"\ of beer on the wall. @@ -260,7 +246,7 @@ any of [0,0,0,0,1,0,0] # Macros: # The "lua block %" and "lua expr %" macros can be used to write raw lua code: -rule: say the time ..=: +rule [say the time] =: lua block ".." |io.write("The OS time is: ") |io.write(tostring(os.time()).."\\n") @@ -269,13 +255,13 @@ say ".."|Math expression result is: \lua expr "(1 + 2*3 + 3*4)^2"\ #.. In the lua environment, "vars" can be used to get local variables/function args, and "compiler" can be used to access the compiler, function defs, and other things -rule: square root of %n ..=: +rule [square root of %n] =: lua expr "math.sqrt(vars.n)" say ".."|The square root of 2 is \square root of 2\ # Macros can be defined as functions that take unprocessed syntax trees and return lua code # "macro block %" is for defining macros that produce blocks of code, not values -macro block: unless %condition %body ..=: ".." +macro block [unless %condition %body] =: ".." |if not (\%condition as lua expr\) then | \(lua expr "vars.body.value.value") as lua block\ |end @@ -285,7 +271,7 @@ unless (1 > 10): say "It looks like a keyword, but there's no magic here!" # and "macro %" is for defining macros that produce an expression -macro: %value as a boolean ..=: ".." +macro [%value as a boolean] =: ".." |(not not (\%value as lua expr\)) -macro: yep ..=: "true" +macro [yep] =: "true" |