From e38f108921c61e1e66d65a368f2a67a763d61e69 Mon Sep 17 00:00:00 2001
From: Ben Bridle <bridle.benjamin@gmail.com>
Date: Sat, 6 May 2023 16:19:15 +1200
Subject: About to refactor parser to be a struct with a method for each stage

---
 src/syntactic_token.rs | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 src/syntactic_token.rs

(limited to 'src/syntactic_token.rs')

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}
+    }
+}
-- 
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