"{ Package: 'jv:tea/compiler' }"

"{ NameSpace: Smalltalk }"

TCompilerPass subclass:#TLLVMCodeGenerator
	instanceVariableNames:'function asm'
	classVariableNames:'SelectorSpecialCharMappingTable'
	poolDictionaries:''
	category:'Languages-Tea-Compiler-Internals'
!

!TLLVMCodeGenerator class methodsFor:'initialization'!

initialize
    "Invoked at system start or when the class is dynamically loaded."

    "/ please change as required (and remove this comment)

    SelectorSpecialCharMappingTable := Dictionary withKeysAndValues:
                #($+ 'pl'
                  $- 'mi'
                  $* 'mu'
                  $/ 'di'
                  $, 'co'
                  $@ 'at'
                  $< 'le'
                  $> 'gr'
                  $= 'eq'
                  $~ 'ne'
                  $| 'pi'
                  $\ 'mo'
                  $& 'am').

    "Modified: / 11-07-2015 / 09:24:06 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!TLLVMCodeGenerator class methodsFor:'utilities'!

llvmFunctionNameForClass: class selector: selector      
    "For given class name and selector, returns the name 
     used by LLVM"

    ^ String streamContents:[ :s|
        s nextPutAll: '__M_L_'.
        s nextPutAll: (class theNonMetaclass name copyReplaceAll: $: with: $_).
        class isMeta ifTrue:[ 
            s nextPutAll: '_class'
        ].
        s nextPut: $_.
        selector isBinarySelector ifTrue:[ 
            selector do:[:c |     
                s nextPutAll: (SelectorSpecialCharMappingTable at: c)
            ].
        ] ifFalse:[ 
            selector do:[:c |  
                c isAlphaNumeric ifTrue:[ 
                    s nextPut: c 
                ] ifFalse:[
                    s nextPut: $_.
                    c == $: ifFalse:[ 
                        c codePoint printOn: s.
                    ]
                ].
            ]
        ].
    ].

    "
    TLLVMIREmitPass llvmFunctionNameForClass: TLLVMIREmitPass class selector: #llvmFunctionNameForClass:selector: 
    TLLVMIREmitPass llvmFunctionNameForClass: SmallInteger selector: #+
    TLLVMIREmitPass llvmFunctionNameForClass: Object selector: #~=

    "

    "Created: / 30-08-2015 / 09:23:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 31-08-2015 / 07:04:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!TLLVMCodeGenerator methodsFor:'visiting'!

visitArgument: anRBVariableNode
    | binding |

    binding := anRBVariableNode binding.
    binding isArgumentBinding ifTrue:[ 
        (function parameterAt: binding index) name: anRBVariableNode name.
    ] ifFalse:[ 
        self notYetImplemented.
    ].

    "Created: / 02-09-2015 / 08:43:00 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!TLLVMCodeGenerator methodsFor:'visitor-double dispatching'!

acceptArrayNode: anArrayNode
    self notYetImplemented

    "Created: / 31-08-2015 / 10:14:19 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptAssignmentNode: anAssignmentNode 
    self notYetImplemented

    "Created: / 31-08-2015 / 10:14:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptBlockNode: aBlockNode 
    self notYetImplemented

    "Created: / 31-08-2015 / 10:14:08 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptCascadeNode: aCascadeNode 
    self notYetImplemented

    "Created: / 31-08-2015 / 10:14:02 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptInlineAssemblyNode: aTInlineAssemblyNode
    | emitMethodNode emitMethod|

    emitMethodNode := RBMethodNode new.
    emitMethodNode arguments: (aTInlineAssemblyNode arguments collect:[ :e|e copy]) , { RBVariableNode named: 'zelf' } , (aTInlineAssemblyNode topNode arguments collect:[ :e|e copy]).
    emitMethodNode body: aTInlineAssemblyNode body copy.
    emitMethodNode variableNodesDo:[ :variableNode |
        variableNode name = 'self' ifTrue:[ 
            variableNode name: 'zelf'.
        ].
    ].
    emitMethodNode selector:(String streamContents: [ :s | emitMethodNode arguments size timesRepeat:[s nextPutAll:'_:'] ]).
    emitMethod := Compiler compile: emitMethodNode formattedCode forClass: UndefinedObject install: false.
    emitMethod
        valueWithReceiver: nil
        arguments: { asm } , ((1 to: function numArgs) collect: [ :i | function parameterAt: i ])

    "Created: / 02-09-2015 / 06:53:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 02-09-2015 / 10:30:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptLiteralNode: aLiteralNode
    ^ aLiteralNode binding asLLVMValueInModule: context module.

    "Created: / 31-08-2015 / 10:13:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 31-08-2015 / 12:20:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptMessageNode: aMessageNode
    | receiver arguments methodName methodFunction |

    receiver := self visitNode: aMessageNode receiver.
    receiver := self visitNode: aMessageNode receiver.
    arguments := aMessageNode arguments collect: [:argument | self visitNode: argument ].

    methodName := self class llvmFunctionNameForClass: aMessageNode binding mclass clazz selector: aMessageNode selector.
    methodFunction := context module getFunctionNamed: methodName.

    ^ asm call: methodFunction _: { receiver } , arguments

    "Created: / 31-08-2015 / 10:13:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 03-09-2015 / 07:13:04 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptMethodNode: aMethodNode 
    | binding |

    binding := aMethodNode binding.
    function := context module 
                    addFunctionNamed: (self class llvmFunctionNameForClass: currentClass selector: currentMethod selector)      
                    type: (LLVMType 
                            function: { binding receiverType asLLVMTypeInModule: context module } ,
                                       (binding parameterTypes collect:[:t|t asLLVMTypeInModule: context module])
                            returning: (binding returnType asLLVMTypeInModule: context module)).
    asm := function builder.
    (function parameterAt: 1) name: 'self'.
    super acceptMethodNode: aMethodNode

    "Created: / 31-08-2015 / 09:42:58 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 02-09-2015 / 21:31:19 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptOptimizedNode: anOptimizedNode 
    self notYetImplemented

    "Created: / 31-08-2015 / 10:13:46 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptPragmaNode: aPragmaNode
    self notYetImplemented

    "Created: / 31-08-2015 / 10:13:41 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptReturnNode: aReturnNode 
    | value |

    value := self visitNode: aReturnNode value.
    asm ret: value.

    "Created: / 31-08-2015 / 10:13:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 31-08-2015 / 12:17:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptSTXPrimitiveCCodeNode: aPrimitiveCCodeNode
    self notYetImplemented

    "Created: / 31-08-2015 / 10:13:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptSTXPrimitiveValueCCodeNode: aPrimitiveValueCCodeNode
    self notYetImplemented

    "Created: / 31-08-2015 / 10:13:27 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

acceptVariableNode: aVariableNode
    self notYetImplemented

    "Created: / 31-08-2015 / 10:13:08 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !


TLLVMCodeGenerator initialize!