Added placeholders for type casts

src/core/ArrayElementToRegister.go

@@ -50,8 +50,8 @@ func (f *Function) ArrayElementToRegister(node *expression.Expression, register
 
 		defer f.UseVariable(indexVariable)
 
-		if !types.Is(indexVariable.Type, types.Int) {
-			return nil, errors.New(&errors.TypeMismatch{Encountered: indexVariable.Type.Name(), Expected: types.Int.Name()}, f.File, index.Token.Position)
+		if !types.Is(indexVariable.Type, types.AnyInt) {
+			return nil, errors.New(&errors.TypeMismatch{Encountered: indexVariable.Type.Name(), Expected: types.AnyInt.Name()}, f.File, index.Token.Position)
 		}
 
 		memory.OffsetRegister = indexVariable.Register
@@ -63,8 +63,8 @@ func (f *Function) ArrayElementToRegister(node *expression.Expression, register
 			return nil, err
 		}
 
-		if !types.Is(typ, types.Int) {
-			return nil, errors.New(&errors.TypeMismatch{Encountered: typ.Name(), Expected: types.Int.Name()}, f.File, index.Token.Position)
+		if !types.Is(typ, types.AnyInt) {
+			return nil, errors.New(&errors.TypeMismatch{Encountered: typ.Name(), Expected: types.AnyInt.Name()}, f.File, index.Token.Position)
 		}
 
 		memory.OffsetRegister = register

src/core/CompileAssignArray.go

@@ -47,8 +47,8 @@ func (f *Function) CompileAssignArray(node *ast.Assign) error {
 			return err
 		}
 
-		if !types.Is(typ, types.Int) {
-			return errors.New(&errors.TypeMismatch{Encountered: typ.Name(), Expected: types.Int.Name()}, f.File, index.Token.Position)
+		if !types.Is(typ, types.AnyInt) {
+			return errors.New(&errors.TypeMismatch{Encountered: typ.Name(), Expected: types.AnyInt.Name()}, f.File, index.Token.Position)
 		}
 
 		memory.OffsetRegister = indexRegister

src/core/CompileCall.go

@@ -52,6 +52,17 @@ func (f *Function) CompileCall(root *expression.Expression) ([]types.Type, error
 	fn, exists = f.All.Functions[pkg+"."+name]
 
 	if !exists {
+		typ := types.ByName(name, f.Package, f.All.Structs)
+
+		if typ != nil {
+			if len(root.Children) != 2 {
+				return nil, errors.New(&errors.ParameterCountMismatch{Function: name, Count: len(root.Children), ExpectedCount: 1}, f.File, nameNode.Token.End())
+			}
+
+			_, err := f.ExpressionToRegister(root.Children[1], f.CPU.Output[0])
+			return []types.Type{typ}, err
+		}
+
 		return nil, errors.New(&errors.UnknownFunction{Name: name}, f.File, nameNode.Token.Position)
 	}
 

src/core/CompileDefinition.go

@@ -6,6 +6,7 @@ import (
 	"git.urbach.dev/cli/q/src/errors"
 	"git.urbach.dev/cli/q/src/expression"
 	"git.urbach.dev/cli/q/src/token"
+	"git.urbach.dev/cli/q/src/types"
 )
 
 // CompileDefinition compiles a variable definition.
@@ -30,6 +31,10 @@ func (f *Function) CompileDefinition(node *ast.Define) error {
 			return errors.New(errors.UntypedExpression, f.File, node.Expression.Token.End())
 		}
 
+		if typ == types.AnyInt {
+			typ = types.Int
+		}
+
 		variable.Type = typ
 		f.AddVariable(variable)
 		return nil

src/core/CompileLen.go

@@ -9,7 +9,7 @@ import (
 	"git.urbach.dev/cli/q/src/types"
 )
 
-var _len = Function{OutputTypes: []types.Type{types.Int}}
+var _len = Function{OutputTypes: []types.Type{types.AnyInt}}
 
 // CompileLen returns the length of a slice.
 func (f *Function) CompileLen(root *expression.Expression) error {

src/core/ExpressionToMemory.go

@@ -48,7 +48,7 @@ func (f *Function) ExpressionToMemory(node *expression.Expression, memory asm.Me
 			// }
 
 			f.MemoryNumber(asm.STORE, memory, number)
-			return types.Int, nil
+			return types.AnyInt, nil
 		}
 	}
 

src/core/ExpressionToRegister.go

@@ -13,7 +13,7 @@ import (
 func (f *Function) ExpressionToRegister(node *expression.Expression, register cpu.Register) (types.Type, error) {
 	if node.IsFolded {
 		f.RegisterNumber(asm.MOVE, register, node.Value)
-		return types.Int, nil
+		return types.AnyInt, nil
 	}
 
 	if node.IsLeaf() {

src/core/PeriodToRegister.go

@@ -14,8 +14,8 @@ import (
 // PeriodToRegister moves a constant or a function address into the given register.
 func (f *Function) PeriodToRegister(node *expression.Expression, register cpu.Register) (types.Type, error) {
 	left := node.Children[0]
-	leftText := left.Token.Text(f.File.Bytes)
 	right := node.Children[1]
+	leftText := left.Token.Text(f.File.Bytes)
 	rightText := right.Token.Text(f.File.Bytes)
 	variable := f.VariableByName(leftText)
 
@@ -44,7 +44,7 @@ func (f *Function) PeriodToRegister(node *expression.Expression, register cpu.Re
 
 		f.SaveRegister(register)
 		f.RegisterNumber(asm.MOVE, register, number)
-		return types.Int, nil
+		return types.AnyInt, nil
 	}
 
 	uniqueName := fmt.Sprintf("%s.%s", leftText, rightText)

src/core/TokenToRegister.go

@@ -53,7 +53,7 @@ func (f *Function) TokenToRegister(t token.Token, register cpu.Register) (types.
 
 		f.SaveRegister(register)
 		f.RegisterNumber(asm.MOVE, register, number)
-		return types.Int, nil
+		return types.AnyInt, nil
 
 	case token.String:
 		data := t.Bytes(f.File.Bytes)