Reorganized functions

src/build/Instruction.go

@@ -0,0 +1,36 @@
+package build
+
+import (
+	"git.akyoto.dev/cli/q/src/build/expression"
+	"git.akyoto.dev/cli/q/src/build/token"
+	"git.akyoto.dev/cli/q/src/errors"
+)
+
+// CompileInstruction compiles a single instruction.
+func (f *Function) CompileInstruction(instruction token.List) error {
+	if instruction[0].Kind == token.Keyword {
+		return f.CompileKeyword(instruction)
+	}
+
+	expr := expression.Parse(instruction)
+
+	if expr == nil {
+		return nil
+	}
+
+	defer expr.Close()
+
+	switch true {
+	case isVariableDefinition(expr):
+		return f.CompileVariableDefinition(expr)
+
+	case isAssignment(expr):
+		return f.CompileAssignment(expr)
+
+	case isFunctionCall(expr):
+		return f.CompileFunctionCall(expr)
+
+	default:
+		return errors.New(&errors.InvalidInstruction{Instruction: expr.Token.Text()}, f.File, expr.Token.Position)
+	}
+}