Add more reserved keywords.
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Stephen Chung
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878ba0b794
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@ -3,32 +3,65 @@ Keywords List
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{{#include ../links.md}}
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| Keyword | Description | Not available under |
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| :-------------------: | ---------------------------------------- | :-----------------: |
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| `true` | Boolean true literal | |
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| `false` | Boolean false literal | |
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| `let` | Variable declaration | |
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| `const` | Constant declaration | |
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| `if` | If statement | |
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| `else` | else block of if statement | |
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| `while` | While loop | |
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| `loop` | Infinite loop | |
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| `for` | For loop | |
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| `in` | Containment test, part of for loop | |
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| `continue` | Continue a loop at the next iteration | |
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| `break` | Loop breaking | |
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| `return` | Return value | |
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| `throw` | Throw exception | |
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| `import` | Import module | [`no_module`] |
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| `export` | Export variable | [`no_module`] |
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| `as` | Alias for variable export | [`no_module`] |
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| `private` | Mark function private | [`no_function`] |
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| `fn` (lower-case `f`) | Function definition | [`no_function`] |
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| `Fn` (capital `F`) | Function to create a [function pointer] | |
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| `call` | Call a [function pointer] | |
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| `curry` | Curry a [function pointer] | |
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| `this` | Reference to base object for method call | [`no_function`] |
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| `type_of` | Get type name of value | |
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| `print` | Print value | |
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| `debug` | Print value in debug format | |
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| `eval` | Evaluate script | |
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| Keyword | Description | Inactive under |
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| :-------------------: | ---------------------------------------- | :-------------: |
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| `true` | Boolean true literal | |
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| `false` | Boolean false literal | |
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| `let` | Variable declaration | |
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| `const` | Constant declaration | |
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| `if` | If statement | |
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| `else` | else block of if statement | |
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| `while` | While loop | |
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| `loop` | Infinite loop | |
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| `for` | For loop | |
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| `in` | Containment test, part of for loop | |
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| `continue` | Continue a loop at the next iteration | |
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| `break` | Loop breaking | |
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| `return` | Return value | |
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| `throw` | Throw exception | |
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| `import` | Import module | [`no_module`] |
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| `export` | Export variable | [`no_module`] |
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| `as` | Alias for variable export | [`no_module`] |
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| `private` | Mark function private | [`no_function`] |
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| `fn` (lower-case `f`) | Function definition | [`no_function`] |
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| `Fn` (capital `F`) | Function to create a [function pointer] | |
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| `call` | Call a [function pointer] | |
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| `curry` | Curry a [function pointer] | |
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| `this` | Reference to base object for method call | [`no_function`] |
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| `type_of` | Get type name of value | |
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| `print` | Print value | |
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| `debug` | Print value in debug format | |
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| `eval` | Evaluate script | |
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Reserved Keywords
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-----------------
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| Keyword | Potential usage |
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| --------- | --------------------- |
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| `var` | Variable declaration |
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| `static` | Variable declaration |
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| `do` | Looping |
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| `each` | Looping |
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| `then` | Conditional |
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| `goto` | Jump |
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| `switch` | Matching |
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| `match` | Matching |
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| `case` | Matching |
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| `public` | Function/field access |
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| `new` | Constructor |
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| `try` | Trap exception |
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| `catch` | Catch exception |
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| `use` | Import namespace |
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| `with` | Scope |
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| `module` | Module |
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| `package` | Package |
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| `spawn` | Threading |
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| `go` | Threading |
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| `await` | Async |
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| `async` | Async |
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| `yield` | Async |
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| `default` | Special value |
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| `void` | Special value |
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| `null` | Special value |
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| `nil` | Special value |
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@ -5,18 +5,21 @@ Keywords
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The following are reserved keywords in Rhai:
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| Keywords | Usage | Not available under feature |
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| ------------------------------------------------- | --------------------- | :-------------------------: |
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| `true`, `false` | Boolean constants | |
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| `let`, `const` | Variable declarations | |
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| `if`, `else` | Control flow | |
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| `while`, `loop`, `for`, `in`, `continue`, `break` | Looping | |
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| `fn`, `private` | Functions | [`no_function`] |
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| `return` | Return values | |
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| `throw` | throw exceptions | |
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| `import`, `export`, `as` | Modules | [`no_module`] |
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| `Fn`, `call` | Function pointers | |
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| `type_of`, `print`, `debug`, `eval` | Special functions | |
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| Active keywords | Reserved keywords | Usage | Inactive under feature |
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| ------------------------------------------------- | ---------------------------------------- | --------------------- | :--------------------: |
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| `true`, `false` | | Boolean constants | |
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| `let`, `const` | `var`, `static` | Variable declarations | |
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| `if`, `else` | `then`, `goto` | Control flow | |
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| | `switch`, `match`, `case` | Matching | |
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| `while`, `loop`, `for`, `in`, `continue`, `break` | `do`, `each` | Looping | |
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| `fn`, `private` | `public`, `new` | Functions | [`no_function`] |
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| `return` | | Return values | |
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| `throw` | `try`, `catch` | Throw exceptions | |
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| `import`, `export`, `as` | `use`, `with`, `module`, `package` | Modules/packages | [`no_module`] |
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| `Fn`, `call`, `curry` | | Function pointers | |
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| | `spawn`, `go`, `async`, `await`, `yield` | Threading/async | |
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| `type_of`, `print`, `debug`, `eval` | | Special functions | |
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| | `default`, `void`, `null`, `nil` | Special values | |
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Keywords cannot become the name of a [function] or [variable], even when they are disabled.
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Keywords cannot be the name of a [function] or [variable], unless the relevant feature is enabled.
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For example, `fn` is a valid variable name under [`no_function`].
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@ -492,9 +492,13 @@ impl Token {
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#[cfg(feature = "no_module")]
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"import" | "export" | "as" => Reserved(syntax.into()),
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"===" | "!==" | "->" | "<-" | "=>" | ":=" | "::<" | "(*" | "*)" | "#" => {
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"===" | "!==" | "->" | "<-" | "=>" | ":=" | "::<" | "(*" | "*)" | "#" | "public"
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| "new" | "use" | "module" | "package" | "var" | "static" | "with" | "do" | "each"
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| "then" | "goto" | "switch" | "match" | "case" | "try" | "catch" | "default"
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| "void" | "null" | "nil" | "spawn" | "go" | "async" | "await" | "yield" => {
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Reserved(syntax.into())
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}
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KEYWORD_PRINT | KEYWORD_DEBUG | KEYWORD_TYPE_OF | KEYWORD_EVAL | KEYWORD_FN_PTR
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| KEYWORD_FN_PTR_CALL | KEYWORD_FN_PTR_CURRY | KEYWORD_THIS => Reserved(syntax.into()),
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