lang: work on various things

- work on new world
  - add file db
  - source_file parsing
  - locs
- fix some test stuff

crates/lang/src/ast.rs

@@ -0,0 +1,78 @@
+use crate::lst_parser::syntax_kind::SyntaxKind::*;
+use crate::SyntaxNode;
+use rowan::Language;
+macro_rules! ast_nodes {
+    ($($ast:ident, $kind:ident);+) => {
+        $(
+            #[derive(Debug, Clone, PartialEq, Eq, Hash)]
+            #[repr(transparent)]
+            pub struct $ast(SyntaxNode);
+            impl rowan::ast::AstNode for $ast {
+                type Language = crate::Lang;
+
+                fn can_cast(kind: <Self::Language as Language>::Kind) -> bool {
+                    kind == $kind
+                }
+
+                fn cast(node: SyntaxNode) -> Option<Self> {
+                    if node.kind() == $kind {
+                        Some(Self(node))
+                    } else {
+                        None
+                    }
+                }
+
+                fn syntax(&self) -> &SyntaxNode {
+                    &self.0
+                }
+            }
+        )+
+    };
+}
+
+ast_nodes!(
+    Def, DEF;
+    DefName, DEF_NAME;
+    DefBody, DEF_BODY;
+
+    Mod, MODULE;
+    ModName, MODULE_NAME;
+    ModBody, MODULE_BODY;
+
+    Use, USE;
+    UsePat, USE_PAT;
+    PatItem, PAT_ITEM;
+    PatGlob, PAT_GLOB;
+    PatGroup, PAT_GROUP;
+
+    Literal, LITERAL;
+    IntLit, INT_NUM;
+    FloatLit, FLOAT_NUM;
+    StringLit, STRING;
+
+    Matrix, MATRIX;
+    MatrixRow, MAT_ROW;
+    Vector, VEC;
+    List, LIST;
+    CollectionItem, COLLECTION_ITEM;
+
+    ParenthesizedExpr, PARENTHESIZED_EXPR;
+    Expression, EXPR;
+
+    Pipeline, PIPELINE;
+
+    Instruction, INSTR;
+    InstructionName, INSTR_NAME;
+    InstructionParams, INSTR_PARAMS;
+
+    AttributeSet, ATTR_SET;
+    Attribute, ATTR;
+    AttributeName, ATTR_NAME;
+    AttributeValue, ATTR_VALUE;
+
+    ParseError, PARSE_ERR;
+    LexError, LEX_ERR;
+
+    Root, ROOT;
+    Eof, EOF
+);