1 files changed, 43 insertions, 0 deletions
diff --git a/src/syntactic_token.rs b/src/syntactic_token.rs
new file mode 100644
index 0000000..ee473e2
--- /dev/null
+++ b/src/syntactic_token.rs
@@ -0,0 +1,43 @@
+use crate::*;
+
+pub enum SyntacticTokenType {
+    Reference(String),
+
+    LabelDefinition(String),
+    MacroDefinition(String),
+    MacroTerminator,
+
+    Pad(u16),
+    Byte(u8),
+    Short(u16),
+    Instruction(u8),
+
+    Comment,
+}
+
+pub struct SyntacticToken {
+    pub r#type: SyntacticTokenType,
+    pub source_location: SourceLocation,
+    pub error: Option<Error>,
+}
+
+impl SyntacticToken {
+    // Call when this token is found inside a macro definition.
+    pub fn use_in_macro_body(&mut self) {
+        match self.r#type {
+            SyntacticTokenType::LabelDefinition(..) |
+            SyntacticTokenType::MacroDefinition(..) => {
+                self.set_error(Error::InvalidTypeInMacroDefinition)
+            }
+            _ => (),
+        };
+    }
+
+    pub fn set_error(&mut self, error: Error) {
+        self.error = Some(error);
+    }
+
+    pub fn is_macro_terminator(&self) -> bool {
+        if let SyntacticTokenType::MacroTerminator = self.r#type {true} else {false}
+    }
+}