From 45409c781a9e35df68c43b1e2f028d30bf90c0a0 Mon Sep 17 00:00:00 2001
From: Patrick Schönberger
Date: Wed, 28 Jul 2021 09:07:53 +0200
Subject: Initial commit

---
 Toc.g4 | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 Toc.g4

(limited to 'Toc.g4')

diff --git a/Toc.g4 b/Toc.g4
new file mode 100644
index 0000000..95c9a0d
--- /dev/null
+++ b/Toc.g4
@@ -0,0 +1,96 @@
+grammar Toc;
+
+prog: (decl)+ EOF;
+
+decl: varDecl
+    | funcDecl
+    | structDecl
+    ;
+
+varDecl:  'var' var;
+var:  varName (':' type) ('=' expr)?;
+
+type: typeName;
+
+
+funcDecl: 'func' func;
+func: funcName '(' parameter ')' (':' type) body;
+parameter: (firstParameter (additionalParameter)*)?;
+firstParameter: var;
+additionalParameter: ',' var;
+
+body: '{' stmt* '}';
+
+
+structDecl: 'struct' structName '{' structMember* '}';
+structMember: structVar | structMethod;
+structVar: var;
+structMethod: func;
+
+
+stmt: (varDecl
+     | conditional
+     | loop
+     | assignment
+     | returnStmt
+     | expr) ;
+
+conditional: ifCond;
+ifCond: 'if' expr body;
+
+loop: whileLoop;
+whileLoop: 'while' expr body;
+
+assignment: identifier '=' expr;
+
+returnStmt: 'return' expr;
+
+expr: funcCall
+    | literal
+    | identifier
+    | subscript
+    | memberAccess
+    | parenExpr
+    | operatorExpr;
+
+nonOpExpr: funcCall
+         | literal
+         | identifier
+         | subscript
+         | memberAccess
+         | parenExpr;
+
+nonSubscriptExpr: funcCall
+                | identifier
+                | memberAccess
+                | parenExpr;
+
+funcCall: funcName '(' (expr (',' expr)*)? ')';
+
+operatorExpr: binaryOperator;
+binaryOperator: nonOpExpr BINARY_OPERATOR nonOpExpr (BINARY_OPERATOR nonOpExpr)*;
+
+identifier: varName;
+
+literal: INTLIT;
+
+subscript: nonSubscriptExpr '[' expr ']';
+
+memberAccess: identifier '.' identifier;
+
+parenExpr: '(' expr ')';
+
+funcName: NAME;
+varName: NAME;
+typeName: NAME;
+structName: NAME;
+
+
+BINARY_OPERATOR:
+    '+'  | '-'  | '*' | '/'
+  | '==' | '!='
+  | '<'  | '>';
+INTLIT: ('+' | '-')? [0-9]+;
+NAME: ([a-z] | [A-Z] | [0-9])+;
+WS: [ \t\r\n]+ -> skip;
+NEWLINE: [\r\n]+;
-- 
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