add type aliases, rework compiler, remove optimization

core/nodes.go

@@ -16,7 +16,7 @@ type Node interface {
 	Bounds() (Pos, Pos)
 }
 
-type Boundary interface {
+type Bounded interface {
 	Bounds() (Pos, Pos)
 }
 
@@ -40,6 +40,8 @@ const (
 	FunctionNodeType
 	ReturnNodeType
 	AccessNodeType
+	AliasNodeType
+	IndexNodeType
 	BreakpointNodeType
 )
 
@@ -68,7 +70,7 @@ func (n NodeType) String() string {
 	case AssignNodeType:
 		return "Assign"
 	case InvokeNodeType:
-		return "Call"
+		return "Invoke"
 	case FunctionNodeType:
 		return "Function"
 	case ReturnNodeType:
@@ -85,6 +87,10 @@ func (n NodeType) String() string {
 		return "Unary"
 	case CallNodeType:
 		return "Call"
+	case AliasNodeType:
+		return "Alias"
+	case IndexNodeType:
+		return "Index"
 	}
 	return "Invalid Node Type"
 }
@@ -231,7 +237,7 @@ func (n TupleNode) Bounds() (Pos, Pos) {
 
 type AccessNode struct {
 	source   Node
-	property string
+	property *Token
 
 	start Pos
 	end   Pos
@@ -242,7 +248,7 @@ func (n AccessNode) Type() NodeType {
 }
 
 func (n AccessNode) String() string {
-	return fmt.Sprintf("(%s from %s)", n.property, n.source)
+	return fmt.Sprintf("(%s from %s)", n.property.Lexeme, n.source)
 }
 
 func (n AccessNode) Bounds() (Pos, Pos) {
@@ -273,9 +279,9 @@ func (n BinaryOperation) String() string {
 		return "less or equal"
 	case BinaryGreaterEqual:
 		return "greater or equal"
-	case BinaryAnd:
+	case BinaryBooleanAnd:
 		return "and"
-	case BinaryOr:
+	case BinaryBooleanOr:
 		return "or"
 	}
 
@@ -288,8 +294,8 @@ const (
 	BinaryMultiplication
 	BinaryDivision
 
-	BinaryAnd
-	BinaryOr
+	BinaryBooleanAnd
+	BinaryBooleanOr
 
 	// Comparison
 	BinaryEquality
@@ -322,9 +328,9 @@ func (n BinaryOperation) Symbol() string {
 		return "<="
 	case BinaryGreaterEqual:
 		return ">="
-	case BinaryAnd:
+	case BinaryBooleanAnd:
 		return "&&"
-	case BinaryOr:
+	case BinaryBooleanOr:
 		return "||"
 	}
 
@@ -337,8 +343,9 @@ type BinaryNode struct {
 	Left  Node
 	Right Node
 
-	start Pos
-	end   Pos
+	operator *Token
+	start    Pos
+	end      Pos
 }
 
 func (n BinaryNode) Type() NodeType {
@@ -386,8 +393,9 @@ type UnaryNode struct {
 	UnaryOperation
 	value Node
 
-	start Pos
-	end   Pos
+	operator *Token
+	start    Pos
+	end      Pos
 }
 
 func (n UnaryNode) Type() NodeType {
@@ -404,7 +412,7 @@ func (n UnaryNode) Bounds() (Pos, Pos) {
 
 // BooleanNode boolean value
 type BooleanNode struct {
-	value bool
+	Boolean bool
 
 	start Pos
 	end   Pos
@@ -415,7 +423,7 @@ func (n BooleanNode) Type() NodeType {
 }
 
 func (n BooleanNode) String() string {
-	return strconv.FormatBool(n.value)
+	return strconv.FormatBool(n.Boolean)
 }
 
 func (n BooleanNode) Bounds() (Pos, Pos) {
@@ -560,7 +568,7 @@ func (n InvokeNode) Bounds() (Pos, Pos) {
 // CallNode call a function of a value
 type CallNode struct {
 	source Node
-	name   Token
+	name   *Token
 	args   []Node
 
 	start Pos
@@ -607,6 +615,18 @@ func (n FunctionNode) Bounds() (Pos, Pos) {
 	return n.start, n.end
 }
 
+func (n FunctionNode) Signature() *FunctionSignature {
+	args := make([]TypeSignature, len(n.parameters))
+	for i, p := range n.parameters {
+		args[i] = p.Signature
+	}
+
+	return &FunctionSignature{
+		args,
+		n.yield,
+	}
+}
+
 // ReturnNode return a value out of this context
 type ReturnNode struct {
 	value Node
@@ -627,6 +647,46 @@ func (n ReturnNode) Bounds() (Pos, Pos) {
 	return n.start, n.end
 }
 
+type AliasNode struct {
+	name      *Token
+	signature TypeSignature
+
+	start Pos
+	end   Pos
+}
+
+func (n AliasNode) Type() NodeType {
+	return AliasNodeType
+}
+
+func (n AliasNode) String() string {
+	return fmt.Sprintf("alias %s to be %s", n.name, n.signature)
+}
+
+func (n AliasNode) Bounds() (Pos, Pos) {
+	return n.start, n.end
+}
+
+type IndexNode struct {
+	source Node
+	index  Node
+
+	start Pos
+	end   Pos
+}
+
+func (n IndexNode) Type() NodeType {
+	return IndexNodeType
+}
+
+func (n IndexNode) String() string {
+	return fmt.Sprintf("index %s of %s", n.source.String(), n.index)
+}
+
+func (n IndexNode) Bounds() (Pos, Pos) {
+	return n.start, n.end
+}
+
 type BreakpointNode struct {
 	start Pos
 	end   Pos