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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "github.com/timtadh/lexmachine" | ||
| "log" | ||
| ) | ||
|
|
||
| type AbstractGlobalVariable struct { | ||
| Value string | ||
| Type string | ||
| } | ||
| type AbstractLocalVariable struct { | ||
| Value string | ||
| Type string | ||
| Name string | ||
| State string // Has 2 states, either pristine (untouched, will throw an error if it reahes end of program without being used) or dirty(used in the code afterwards, this is the normal accepted behavior) | ||
| } | ||
| type FunctionSignature struct { | ||
| Name string | ||
| ReturnType string | ||
| ParamList []AbstractLocalVariable | ||
| } | ||
|
|
||
| func NewFunctionSignature(name string, returnType string, paramList []AbstractLocalVariable) *FunctionSignature { | ||
| return &FunctionSignature{Name: name, ReturnType: returnType, ParamList: paramList} | ||
| } | ||
|
|
||
| var CheckVariableHierarchyQueue []*Node | ||
| var GlobalVars = make(map[string]*AbstractGlobalVariable) | ||
| var LocalVars = make(map[string]*AbstractLocalVariable) | ||
| var FunctionDeclarations = make(map[string]*FunctionSignature) | ||
|
|
||
| func NewAbstractGlobalVariable(node *Node) *AbstractGlobalVariable { | ||
| name, value, varType := destructureElementsFromVarDeclaration(node) | ||
| constructedNode := &AbstractGlobalVariable{ | ||
| Value: value, | ||
| Type: varType, | ||
| } | ||
| GlobalVars[name] = constructedNode | ||
| return constructedNode | ||
| } | ||
| func NewAbstractLocalVariable(val string, typ string, name string) *AbstractLocalVariable { | ||
| return &AbstractLocalVariable{ | ||
| Value: val, | ||
| Type: typ, | ||
| Name: name, | ||
| State: "Pristine", | ||
| } | ||
| } | ||
| func destructureElementsFromVarDeclaration(node *Node) (name string, value string, varType string) { | ||
| childrenCount := len(node.Children) | ||
| tokenList := make([]*lexmachine.Token, childrenCount) | ||
| for i, tok := range node.Children { | ||
| tokenList[i] = tok.Token // [int x = 5 ; ] | ||
| } | ||
| if childrenCount > 3 { // uninitialized var | ||
| return tokenList[1].Value.(string), tokenList[3].Value.(string), tokenList[0].Value.(string) | ||
| } else { | ||
| return tokenList[1].Value.(string), "", tokenList[0].Value.(string) | ||
| } | ||
| } | ||
| func (n *Node) AddContext(node *Node) { | ||
| name, value, varType := destructureElementsFromVarDeclaration(node) | ||
| constructedNode := &AbstractLocalVariable{ | ||
| Value: value, | ||
| Type: varType, | ||
| } | ||
| n.Context[name] = constructedNode | ||
| } | ||
|
|
||
| // TODO: Try to find a way to backtrack to the nearest parent context. | ||
| func QueueElementForChecking(node *Node) { | ||
| CheckVariableHierarchyQueue = append(CheckVariableHierarchyQueue, node) | ||
| } | ||
|
|
||
| // FindHealthyOccurenceInParentContexts Function that recursively checks for the variable existance within the parent scope until it reaches the parent = nil | ||
| func FindHealthyOccurenceInParentContexts(node *Node, name string) { | ||
|
|
||
| if node.Parent == nil { | ||
| if _, ok := node.Context[name]; !ok { | ||
| log.Fatal(fmt.Errorf("variable %s is not defined previously", name)) | ||
| return | ||
| } else { | ||
| return | ||
| } | ||
| } else { // Incase parent exists, recurse and keep looking for occurence. | ||
| FindHealthyOccurenceInParentContexts(node.Parent, name) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,19 +1,18 @@ | ||
| class HelloWorld{ | ||
| class HelloWorld { | ||
| int kwx=5; | ||
| public static void main(String[] args){ | ||
| { | ||
| if (1 && 2) | ||
| { | ||
| x=1; | ||
| whilae(1) | ||
|
|
||
| { | ||
| System.out.println(he); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| System.out.println(Hello); | ||
| } | ||
| } | ||
| kwx=6; | ||
| } | ||
|
|
||
|
|
||
| } | ||
|
|
||
| class Test extends Thread { | ||
| int kwzae=5; | ||
| public int run(int x){ | ||
| int k=5; | ||
| System.out.println(z); | ||
| return x; | ||
| } | ||
| } | ||
|
|
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