X-Git-Url: https://gitweb.ps.run/toc/blobdiff_plain/45409c781a9e35df68c43b1e2f028d30bf90c0a0..8aeae09e74b46ca52866f22b48f55fecdf27b849:/Toc.g4

diff --git a/Toc.g4 b/Toc.g4
index 95c9a0d..afe4209 100644
--- a/Toc.g4
+++ b/Toc.g4
@@ -2,81 +2,92 @@ grammar Toc;
 
 prog: (decl)+ EOF;
 
-decl: varDecl
+decl: varDecl ';'
     | funcDecl
     | structDecl
     ;
 
 varDecl:  'var' var;
 var:  varName (':' type) ('=' expr)?;
+varInit:  varName (':' type) ('=' expr);
 
-type: typeName;
+type: typeName (typeModifier)*;
+typeModifier: '*' | ('[' (INT_LIT)? ']');
 
 
 funcDecl: 'func' func;
 func: funcName '(' parameter ')' (':' type) body;
-parameter: (firstParameter (additionalParameter)*)?;
-firstParameter: var;
-additionalParameter: ',' var;
+parameter: (var (',' var)*)?;
 
 body: '{' stmt* '}';
 
 
 structDecl: 'struct' structName '{' structMember* '}';
 structMember: structVar | structMethod;
-structVar: var;
+structVar: var ';';
 structMethod: func;
 
 
-stmt: (varDecl
-     | conditional
-     | loop
-     | assignment
-     | returnStmt
-     | expr) ;
+stmt: varDecl ';'
+    | ifStmt
+    | switchStmt
+    | forStmt
+    | whileStmt
+    | assignStmt ';'
+    | returnStmt ';'
+    | expr ';';
 
-conditional: ifCond;
-ifCond: 'if' expr body;
+ifStmt: 'if' expr body elseIfStmt* elseStmt?;
+elseIfStmt: 'else' 'if' expr body;
+elseStmt: 'else' body;
 
-loop: whileLoop;
-whileLoop: 'while' expr body;
+switchStmt: 'switch' identifierExpr switchBody;
+switchBody: '{' switchCase* '}';
+switchCase: 'case' expr body;
 
-assignment: identifier '=' expr;
+forStmt: 'for' (varInit | assignStmt) ',' expr ',' expr body;
+
+whileStmt: 'while' expr body;
+
+assignStmt: identifierExpr '=' expr;
 
 returnStmt: 'return' expr;
 
-expr: funcCall
-    | literal
-    | identifier
-    | subscript
-    | memberAccess
+expr: funcExpr
+    | litExpr
+    | identifierExpr
     | parenExpr
-    | operatorExpr;
-
-nonOpExpr: funcCall
-         | literal
-         | identifier
-         | subscript
-         | memberAccess
-         | parenExpr;
+    | accessExpr
+    | opExpr;
 
-nonSubscriptExpr: funcCall
-                | identifier
-                | memberAccess
-                | parenExpr;
+/* op */
+nonOpExpr: funcExpr
+         | litExpr
+         | identifierExpr
+         | parenExpr
+         | accessExpr;
 
-funcCall: funcName '(' (expr (',' expr)*)? ')';
+/* lit access op */
+nonAccessExpr: funcExpr
+             | identifierExpr
+             | parenExpr;
 
-operatorExpr: binaryOperator;
-binaryOperator: nonOpExpr BINARY_OPERATOR nonOpExpr (BINARY_OPERATOR nonOpExpr)*;
+funcExpr: funcName '(' (expr (',' expr)*)? ')';
 
-identifier: varName;
+opExpr: binaryOp | prefixOp | postfixOp | ternaryOp;
+binaryOp: nonOpExpr binary_op nonOpExpr (binary_op nonOpExpr)*;
+prefixOp: prefix_op nonOpExpr;
+postfixOp: nonOpExpr postfix_op;
+ternaryOp: nonOpExpr '?' expr ':' expr;
 
-literal: INTLIT;
+identifierExpr: varName;
 
-subscript: nonSubscriptExpr '[' expr ']';
+litExpr: INT_LIT | DECIMAL_LIT | STRING_LIT | BOOL_LIT;
 
-memberAccess: identifier '.' identifier;
+accessExpr: nonAccessExpr (accessSubExpr)+;
+accessSubExpr: accessMember | accessBrackets;
+accessMember: ('.' | '->') identifierExpr;
+accessBrackets: '[' expr ']';
 
 parenExpr: '(' expr ')';
 
@@ -86,11 +97,21 @@ typeName: NAME;
 structName: NAME;
 
 
-BINARY_OPERATOR:
-    '+'  | '-'  | '*' | '/'
-  | '==' | '!='
-  | '<'  | '>';
-INTLIT: ('+' | '-')? [0-9]+;
+postfix_op:
+    '++' | '--';
+prefix_op:
+    '+' | '-' | '!' | '~' | '&' | '*' | postfix_op;
+binary_op:
+    '+' | '-' | '*' | '/' | '%' | '&' | '<' | '|' | '^' | '>' |
+    '==' | '!=' | '<=' | '>=' | '<'  | '>' |
+    '<<' | '>>' | '||' | '&&' | '&=' | '|=' | '^=' |
+    '<<=' | '>>=' | '+=' | '-=' | '*=' | '/=' | '%=';
+
+INT_LIT: ('+' | '-')? [0-9]+;
+DECIMAL_LIT: ('+' | '-')* [0-9]+ '.' [0-9]+;
+STRING_LIT: '"' [^"]* '"';
+BOOL_LIT: 'true' | 'false';
+
 NAME: ([a-z] | [A-Z] | [0-9])+;
 WS: [ \t\r\n]+ -> skip;
 NEWLINE: [\r\n]+;