Added types

src/build/errors/Base.go

@@ -1,5 +1,26 @@
 package errors
 
+var (
+	EmptySwitch                = &Base{"Empty switch"}
+	ExpectedFunctionName       = &Base{"Expected function name"}
+	ExpectedFunctionParameters = &Base{"Expected function parameters"}
+	ExpectedFunctionDefinition = &Base{"Expected function definition"}
+	ExpectedIfBeforeElse       = &Base{"Expected an 'if' block before 'else'"}
+	InvalidNumber              = &Base{"Invalid number"}
+	InvalidExpression          = &Base{"Invalid expression"}
+	InvalidRune                = &Base{"Invalid rune"}
+	InvalidStatement           = &Base{"Invalid statement"}
+	MissingBlockStart          = &Base{"Missing '{'"}
+	MissingBlockEnd            = &Base{"Missing '}'"}
+	MissingExpression          = &Base{"Missing expression"}
+	MissingGroupStart          = &Base{"Missing '('"}
+	MissingGroupEnd            = &Base{"Missing ')'"}
+	MissingMainFunction        = &Base{"Missing main function"}
+	MissingOperand             = &Base{"Missing operand"}
+	MissingType                = &Base{"Missing type"}
+	NotImplemented             = &Base{"Not implemented"}
+)
+
 // Base is the base class for errors that have no parameters.
 type Base struct {
 	Message string

src/build/errors/CompileErrors.go

@@ -1,14 +0,0 @@
-package errors
-
-var (
-	EmptySwitch          = &Base{"Empty switch"}
-	ExpectedIfBeforeElse = &Base{"Expected an 'if' block before 'else'"}
-	InvalidNumber        = &Base{"Invalid number"}
-	InvalidExpression    = &Base{"Invalid expression"}
-	InvalidRune          = &Base{"Invalid rune"}
-	InvalidStatement     = &Base{"Invalid statement"}
-	MissingExpression    = &Base{"Missing expression"}
-	MissingMainFunction  = &Base{"Missing main function"}
-	MissingOperand       = &Base{"Missing operand"}
-	NotImplemented       = &Base{"Not implemented"}
-)

src/build/errors/ScanErrors.go

@@ -1,11 +0,0 @@
-package errors
-
-var (
-	MissingBlockStart          = &Base{"Missing '{'"}
-	MissingBlockEnd            = &Base{"Missing '}'"}
-	MissingGroupStart          = &Base{"Missing '('"}
-	MissingGroupEnd            = &Base{"Missing ')'"}
-	ExpectedFunctionName       = &Base{"Expected function name"}
-	ExpectedFunctionParameters = &Base{"Expected function parameters"}
-	ExpectedFunctionDefinition = &Base{"Expected function definition"}
-)

src/build/scanner/scanFile.go

@@ -1,6 +1,7 @@
 package scanner
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
 
@@ -153,8 +154,20 @@ func (s *Scanner) scanFile(path string, pkg string) error {
 			return errors.New(errors.ExpectedFunctionParameters, file, tokens[i].Position)
 		}
 
+		// Return type
+		if i < len(tokens) && tokens[i].Kind == token.ReturnType {
+			for i < len(tokens) && tokens[i].Kind != token.BlockStart {
+				i++
+			}
+		}
+
 		// Function definition
 		for i < len(tokens) {
+			if tokens[i].Kind == token.ReturnType {
+				i++
+				continue
+			}
+
 			if tokens[i].Kind == token.BlockStart {
 				blockLevel++
 				i++
@@ -207,17 +220,18 @@ func (s *Scanner) scanFile(path string, pkg string) error {
 
 		name := tokens[nameStart].Text(contents)
 		body := tokens[bodyStart:i]
-
 		function := core.NewFunction(pkg, name, file, body)
 		parameters := tokens[paramsStart:paramsEnd]
 		count := 0
 
 		err := expression.EachParameter(parameters, func(tokens token.List) error {
-			if len(tokens) != 1 {
-				return errors.New(errors.NotImplemented, file, tokens[0].Position)
+			if len(tokens) < 2 {
+				return errors.New(errors.MissingType, file, tokens[0].End())
 			}
 
 			name := tokens[0].Text(contents)
+			dataType := tokens[1].Text(contents)
+			fmt.Println(dataType)
 			register := x64.CallRegisters[count]
 			uses := token.Count(function.Body, contents, token.Identifier, name)
 

src/build/token/Kind.go

@@ -18,6 +18,7 @@ const (
 	BlockEnd                    // }
 	ArrayStart                  // [
 	ArrayEnd                    // ]
+	ReturnType                  // ->
 	_operators                  // <operators>
 	Add                         // +
 	Sub                         // -

src/build/token/Tokenize.go

@@ -30,9 +30,17 @@ func Tokenize(buffer []byte) List {
 			if len(tokens) == 0 || tokens[len(tokens)-1].IsOperator() || tokens[len(tokens)-1].IsExpressionStart() || tokens[len(tokens)-1].IsKeyword() {
 				tokens = append(tokens, Token{Kind: Negate, Position: i, Length: 1})
 			} else {
-				if i+1 < Position(len(buffer)) && buffer[i+1] == '=' {
-					tokens = append(tokens, Token{Kind: SubAssign, Position: i, Length: 2})
-					i++
+				if i+1 < Position(len(buffer)) {
+					switch buffer[i+1] {
+					case '=':
+						tokens = append(tokens, Token{Kind: SubAssign, Position: i, Length: 2})
+						i++
+					case '>':
+						tokens = append(tokens, Token{Kind: ReturnType, Position: i, Length: 2})
+						i++
+					default:
+						tokens = append(tokens, Token{Kind: Sub, Position: i, Length: 1})
+					}
 				} else {
 					tokens = append(tokens, Token{Kind: Sub, Position: i, Length: 1})
 				}
@@ -212,10 +220,12 @@ func Tokenize(buffer []byte) List {
 					kind = Add
 				case "+=":
 					kind = AddAssign
-				case "-":
-					kind = Sub
-				case "-=":
-					kind = SubAssign
+				// case "-":
+				// 	kind = Sub
+				// case "-=":
+				// 	kind = SubAssign
+				// case "->":
+				// 	kind = ReturnType
 				case ".":
 					kind = Period
 				case "/":