From f4027cae775e3c9c237675f9df35a744d54f3f2e Mon Sep 17 00:00:00 2001
From: Ben Bridle <bridle.benjamin@gmail.com>
Date: Mon, 28 Oct 2024 19:52:29 +1300
Subject: Rewrite assembler

This is an almost complete rewrite of the entire assembler from the
ground up, with a different parsing strategy and a whole new symbol
resolution mechanism for automatically including library files.

The assembly syntax has also been slightly modified, with padding
tokens now being prefixed with '#' instead of '$', and a block-style
anonymous-label syntax which uses the '{' and '}' characters.
---
 src/tokens/syntactic.rs | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 src/tokens/syntactic.rs

(limited to 'src/tokens/syntactic.rs')

diff --git a/src/tokens/syntactic.rs b/src/tokens/syntactic.rs
new file mode 100644
index 0000000..8684ed9
--- /dev/null
+++ b/src/tokens/syntactic.rs
@@ -0,0 +1,39 @@
+use crate::*;
+
+
+pub struct SyntacticToken {
+    /// Location of token in source files.
+    pub source: SourceSpan,
+    pub variant: SyntacticTokenVariant,
+}
+
+
+pub enum SyntacticTokenVariant {
+    LabelDefinition(String),
+    MacroDefinition(String),
+    MacroDefinitionTerminator,
+
+    Literal(Value),
+    Padding(Value),
+    Instruction(Instruction),
+
+    Comment(String),
+    String(Vec<u8>),
+
+    BlockOpen,
+    BlockClose,
+    MarkOpen,
+    MarkClose,
+
+    Symbol(String),
+
+    Error(SyntacticParseError),
+}
+
+
+pub enum SyntacticParseError {
+    UnterminatedComment,
+    UnterminatedRawString,
+    UnterminatedNullString,
+    InvalidPaddingValue(String),
+}
-- 
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