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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,24 @@ | ||
| ' Utility functions for the BrighterScript language | ||
| ' Utility functions for the BrighterScript language | ||
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| ' | ||
| ' Convert a value into a string. For non-primitive values, this will return the type instead of its value in most cases. | ||
| ' @param dynamic value - the value to be turned into a string. | ||
| ' @return string - the string representation of `value` | ||
| ' | ||
| function bslib_toString(value) | ||
| valueType = type(value) | ||
| 'if the var supports `toStr()` | ||
| if valueType = "<uninitialized>" then | ||
| return valueType | ||
| else if value = invalid then | ||
| return "<invalid>" | ||
| else if GetInterface(value, "ifToStr") <> invalid then | ||
| return value.toStr() | ||
| else if valueType = "roSGNode" | ||
| return "Node(" + value.subType() + ")" | ||
| end if | ||
| 'TODO add class name for objects once we have reflection implemented | ||
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| 'when all else fails, just return the type | ||
| return "<" + valueType + ">" | ||
| end function |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,186 @@ | ||
| # Source Literals | ||
| BrightScript provides the `LINE_NUM` literal, which represents the runtime 1-based line number of the current line of code. In a similar fashion, BrighterScript provides several more source literals. | ||
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| These source literals are converted into inline variables at transpile-time, so keep in mind that any post-processing to the transpiled files could cause these values to be incorrect. | ||
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| ## SOURCE_FILE_PATH | ||
| The absolute path to the source file, including a leading `file:/` scheme indicator. i.e. `"file:/C:/projects/RokuApp/source/main.bs"`. | ||
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| ```BrighterScript | ||
| print SOURCE_FILE_PATH | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| print "file:/c:\projects\roku\brighterscript\scripts\rootDir\source\main.bs" | ||
| ``` | ||
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| ## SOURCE_LINE_NUM | ||
| The 1-based line number of the source file. | ||
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| ```BrighterScript | ||
| 'I am line 1 | ||
| print SOURCE_LINE_NUM 'I am line 2 | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| 'I am line 1 | ||
| print 2 'I am line 2 | ||
| ``` | ||
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| ## FUNCTION_NAME | ||
| ### Basic | ||
| The name of the current function | ||
| ```BrighterScript | ||
| function RunFromZombie() | ||
| print FUNCTION_NAME | ||
| end function | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| function RunFromZombie() | ||
| print "RunFromZombie" | ||
| end function | ||
| ``` | ||
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| ### Namespaced | ||
| if the function is contained in a namespace, that name will be included in the function name | ||
| ```BrighterScript | ||
| namespace Human.Versus.Zombie | ||
| function RunFromZombie() | ||
| print FUNCTION_NAME | ||
| end function | ||
| end namespace | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| function Human_Versus_Zombie_RunFromZombie() | ||
| print "Human_Versus_Zombie_RunFromZombie" | ||
| end function | ||
| ``` | ||
| ### Anonymous Functions | ||
| For anonymous functions, FUNCTION_NAME will include the enclosing function name, followed by `anon` and the index of the function in its parent. If there are multiple nested anonymous functions, each level will have its own `anon[index]` in the name. Function indexes start at 0 within each enclosing function. | ||
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| ```BrighterScript | ||
| function main() | ||
| zombieAttack = function() | ||
| print FUNCTION_NAME | ||
| end function | ||
| humanAttack = function() | ||
| useSword = function() | ||
| print FUNCTION_NAME | ||
| end function | ||
| useSword() | ||
| end function | ||
| end function | ||
| namespace Human.Versus.Zombie | ||
| function Eat() | ||
| print SOURCE_FUNCTION_NAME | ||
| findFood = function() | ||
| print FUNCTION_NAME | ||
| end function | ||
| end function | ||
| end namespace | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| function main() | ||
| zombieAttack = function() | ||
| print "main$anon0" | ||
| end function | ||
| humanAttack = function() | ||
| useSword = function() | ||
| print "main$anon1$anon0" | ||
| end function | ||
| useSword() | ||
| end function | ||
| end function | ||
| function Human_Versus_Zombie_Eat() | ||
| print "Human.Versus.Zombie.Eat" | ||
| findFood = function() | ||
| print "Human_Versus_Zombie_Eat$anon0" | ||
| end function | ||
| end function | ||
| ``` | ||
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| ## SOURCE_FUNCTION_NAME | ||
| This works the same as FUNCTION_NAME except that it will use a dot in namespace names instead of the transpiled underscores. | ||
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| ```BrighterScript | ||
| namespace Human.Versus.Zombie | ||
| function Eat() | ||
| print SOURCE_FUNCTION_NAME | ||
| findFood = function() | ||
| print SOURCE_FUNCTION_NAME | ||
| end function | ||
| end function | ||
| end namespace | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| function Human_Versus_Zombie_Eat() | ||
| print "Human.Versus.Zombie.Eat" | ||
| findFood = function() | ||
| print "Human.Versus.Zombie.Eat$anon0" | ||
| end function | ||
| end function | ||
| ``` | ||
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| ## SOURCE_LOCATION | ||
| A combination of SOURCE_FILE_PATH and SOURCE_LINE_NUM. | ||
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| ```BrighterScript | ||
| function main() | ||
| print SOURCE_LOCATION | ||
| end function | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| function main() | ||
| print "file:/c:\projects\roku\brighterscript\scripts\rootDir\source\main.bs:2" | ||
| end function | ||
| ``` | ||
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| ## PKG_PATH | ||
| The pkg path of the file. | ||
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| ```BrighterScript | ||
| function main() | ||
| print PKG_PATH | ||
| end function | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| function main() | ||
| print "pkg:/source/main.brs" | ||
| end function | ||
| ``` | ||
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| ## PKG_LOCATION | ||
| A combination of PKG_PATH and LINE_NUM. Keep in mind, LINE_NUM is a runtime variable provided by Roku. | ||
| ```BrighterScript | ||
| print PKG_LOCATION | ||
| ``` | ||
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| transpiles to: | ||
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| ```BrightScript | ||
| print "pkg:/source/main.brs:" + str(LINE_NUM) | ||
| ``` |
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