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muesli
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Beoran 27222415ce Consider operators as part of a command chain. 5 yıl önce
cmd 6c4c374381 Make EOF work slightly better in muesly command interpreter. 5 yıl önce
test b19c0c32ae A few things work better now 5 yıl önce
LICENSE 534d46d7c8 Add MIT LICENSE. 5 yıl önce
README.md 27222415ce Consider operators as part of a command chain. 5 yıl önce
alias.go 1a81159c54 Support operators, finally, if in a slightly roundabout way. Also support aliasing. 5 yıl önce
ast.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
ast_test.go 969734636f Improve the lexer and work on the parser. 6 yıl önce
block.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
bool.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
builtin.go 1a81159c54 Support operators, finally, if in a slightly roundabout way. Also support aliasing. 5 yıl önce
callable.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
cover.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
defined.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
design_muesli.muesli 27222415ce Consider operators as part of a command chain. 5 yıl önce
doc.go 5ffa4a6725 Lexer is still flaky, considering switching to state machine based lexer. 6 yıl önce
door.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
empty.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
error.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
float.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
go.mod 5e6a17f72a Starting to become runnable. 5 yıl önce
go.sum 5e6a17f72a Starting to become runnable. 5 yıl önce
help.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
int.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
keyword.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
lexer.go 1a81159c54 Support operators, finally, if in a slightly roundabout way. Also support aliasing. 5 yıl önce
lexer_test.go 433b2c57d0 Parser starts to work correctly. 6 yıl önce
list.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
logger.go 433b2c57d0 Parser starts to work correctly. 6 yıl önce
map.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
muesli.go 5ffa4a6725 Lexer is still flaky, considering switching to state machine based lexer. 6 yıl önce
parser.go 27222415ce Consider operators as part of a command chain. 5 yıl önce
parser_test.go 5e6a17f72a Starting to become runnable. 5 yıl önce
redispatch.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
signature.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
string.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
token.go 07e59b880b Consider adding operators as commands. 5 yıl önce
type.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
value.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce
vm.go 27222415ce Consider operators as part of a command chain. 5 yıl önce
vm_test.go ad6c510461 WIP return or fail. 5 yıl önce
word.go 027d3a2f29 Signatures for all callables. Think about type system. 5 yıl önce

README.md

Muesli is a Multi Use Embeddable Scripting Language Implementation.

Introduction

Muesli is a scripting language implemented in Go, that has a simple command chain based TCL or shell like syntax but with rich semantics. Unlike TCL or shels, all muelsi values are typed, and many types are supported, not just string values. Additionaly, if so desired, every symbol used in the syntax can be replaced by a key word, leading to a native language programming feel.

Syntax

A Muesli program consists of blocks and/or chains, separated by newlines or periods. A chain consists of one or more commands, linked together by operators.

Blocks consist of chains grouped together in blocks between braces {}. The commands in a block are not executed immediately but stored.

A single chain can be placed in parenthesis (), where the return value of the chain will be subsituted. Lists are formed by placing their contents between brackets [].

Every command has a return value, which can be of any type, and not just a number like in most shells. Furthermore commands have input and output, which default to stdin and stdout, but can be redirected or reconfigured.

There are three types of commands, namely direct commands indirect commmands and literal commands. A direct command starts with a name, and is followed by any number of parameters. Parameters may be which may be blocks, parenthesis, lists, names or literals, or values. An indirect command starts with a substitution followed by parameters. A literal command is simply a numeric, string, boolean or nil literal that evaluates to itself.

The language itself has no control statements, such as if, or for, these are implemented as commands in stead.

Muesly supports several kinds of values, namely:

  • Integers
  • Floats
  • Strings between "double quotes"
  • The booleans !true and !false
  • The nil value !nil
  • Words, which are simple runs of alphanumercial characters starting with a lower case lettter, such as foo
  • Types which are runs of alphanumerical characters starting with an upper case letter, such as Foo.