diff options
Diffstat (limited to 'core/vm/sqlvm/parser/internal/grammar.peg')
| -rw-r--r-- | core/vm/sqlvm/parser/internal/grammar.peg | 94 |
1 files changed, 74 insertions, 20 deletions
diff --git a/core/vm/sqlvm/parser/internal/grammar.peg b/core/vm/sqlvm/parser/internal/grammar.peg index bc2da0566..98e19c98b 100644 --- a/core/vm/sqlvm/parser/internal/grammar.peg +++ b/core/vm/sqlvm/parser/internal/grammar.peg @@ -9,7 +9,18 @@ import ( S <- _ x:Stmt? _ xs:( ';' _ s:Stmt? _ { return s, nil } )* EOF -{ return assertNodeSlice(prepend(x, assertSlice(xs))), nil } +{ + nodeSlice := prepend(x, assertSlice(xs)) + stmtSlice := make([]ast.StmtNode, len(nodeSlice)) + for idx := range nodeSlice { + if nodeSlice[idx] != nil { + stmtSlice[idx] = nodeSlice[idx].(ast.StmtNode) + } else { + stmtSlice[idx] = nil + } + } + return stmtSlice, nil +} /* Statements */ Stmt @@ -21,7 +32,7 @@ Stmt / CreateIndexStmt SelectStmt - = SelectToken + = v:SelectToken _ f:SelectColumn fs:( _ SeparatorToken _ s:SelectColumn { return s, nil } )* table:( _ FromToken _ i:Identifier { return i, nil } )? where:( _ w:WhereClause { return w, nil } )? @@ -33,6 +44,7 @@ SelectStmt node := &ast.SelectStmtNode{} node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) + node.SetVerb(v.([]byte)) node.Column = assertExprSlice(prepend(f, assertSlice(fs))) if table != nil { node.Table = table.(*ast.IdentifierNode) @@ -64,7 +76,7 @@ SelectColumn / Expr UpdateStmt - = UpdateToken + = v:UpdateToken _ table:Identifier _ SetToken _ a:Assignment as:( _ SeparatorToken _ s:Assignment { return s, nil } )* @@ -73,6 +85,7 @@ UpdateStmt node := &ast.UpdateStmtNode{} node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) + node.SetVerb(v.([]byte)) node.Table = table.(*ast.IdentifierNode) assignSlice := prepend(a, assertSlice(as)) node.Assignment = make([]*ast.AssignOperatorNode, len(assignSlice)) @@ -86,14 +99,15 @@ UpdateStmt } DeleteStmt - = DeleteToken - _ FromToken + = v1:DeleteToken v2:_ v3:FromToken _ table:Identifier where:( _ w:WhereClause { return w, nil } )? { node := &ast.DeleteStmtNode{} node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) + node.SetVerb(bytes.Join([][]byte{ + v1.([]byte), v2.([]byte), v3.([]byte)}, nil)) node.Table = table.(*ast.IdentifierNode) if where != nil { node.Where = where.(*ast.WhereOptionNode) @@ -102,14 +116,15 @@ DeleteStmt } InsertStmt - = InsertToken - _ IntoToken + = v1:InsertToken v2:_ v3:IntoToken _ table:Identifier _ insert:( InsertWithColumnClause / InsertWithDefaultClause ) { node := &ast.InsertStmtNode{} node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) + node.SetVerb(bytes.Join([][]byte{ + v1.([]byte), v2.([]byte), v3.([]byte)}, nil)) node.Table = table.(*ast.IdentifierNode) switch i := insert.(type) { case *ast.InsertWithColumnOptionNode: @@ -127,8 +142,7 @@ InsertValue { return e, nil } CreateTableStmt - = CreateToken - _ TableToken + = v1:CreateToken v2:_ v3:TableToken _ table:Identifier _ '(' _ column:( @@ -141,6 +155,8 @@ CreateTableStmt node := &ast.CreateTableStmtNode{} node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) + node.SetVerb(bytes.Join([][]byte{ + v1.([]byte), v2.([]byte), v3.([]byte)}, nil)) node.Table = table.(*ast.IdentifierNode) columnSlice := assertSlice(column) node.Column = make([]*ast.ColumnSchemaNode, len(columnSlice)) @@ -192,9 +208,9 @@ ColumnConstraint / AutoincrementClause CreateIndexStmt - = CreateToken + = v1:CreateToken unique:( _ u:UniqueClause { return u, nil } )? - _ IndexToken + v2:_ v3:IndexToken _ index:Identifier _ OnToken _ table:Identifier @@ -203,6 +219,8 @@ CreateIndexStmt node := &ast.CreateIndexStmtNode{} node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) + node.SetVerb(bytes.Join([][]byte{ + v1.([]byte), v2.([]byte), v3.([]byte)}, nil)) node.Index = index.(*ast.IdentifierNode) node.Table = table.(*ast.IdentifierNode) columnSlice := assertSlice(prepend(i, assertSlice(is))) @@ -245,8 +263,8 @@ OrderColumn node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) node.Expr = i.(ast.ExprNode) - node.Desc = s != nil && string(s.([]byte)) == "desc" - node.NullsFirst = n != nil && string(n.([]byte)) == "first" + node.Desc = s != nil && bytes.EqualFold(s.([]byte), []byte("DESC")) + node.NullsFirst = n != nil && bytes.EqualFold(n.([]byte), []byte("FIRST")) return node, nil } @@ -894,7 +912,7 @@ BoolLiteral node := &ast.BoolValueNode{} node.SetPosition(uint32(c.pos.offset)) node.SetLength(uint32(len(c.text))) - node.V = string(b.([]byte)) == "true" + node.V = bytes.EqualFold(b.([]byte), []byte("TRUE")) return node, nil } @@ -1019,132 +1037,167 @@ NormalString /* Tokens */ SelectToken = "SELECT"i !NormalIdentifierRest +{ return c.text, nil } FromToken = "FROM"i !NormalIdentifierRest +{ return c.text, nil } WhereToken = "WHERE"i !NormalIdentifierRest +{ return c.text, nil } OrderToken = "ORDER"i !NormalIdentifierRest +{ return c.text, nil } ByToken = "BY"i !NormalIdentifierRest +{ return c.text, nil } GroupToken = "GROUP"i !NormalIdentifierRest +{ return c.text, nil } LimitToken = "LIMIT"i !NormalIdentifierRest +{ return c.text, nil } OffsetToken = "OFFSET"i !NormalIdentifierRest +{ return c.text, nil } UpdateToken = "UPDATE"i !NormalIdentifierRest +{ return c.text, nil } SetToken = "SET"i !NormalIdentifierRest +{ return c.text, nil } DeleteToken = "DELETE"i !NormalIdentifierRest +{ return c.text, nil } InsertToken = "INSERT"i !NormalIdentifierRest +{ return c.text, nil } IntoToken = "INTO"i !NormalIdentifierRest +{ return c.text, nil } ValuesToken = "VALUES"i !NormalIdentifierRest +{ return c.text, nil } CreateToken = "CREATE"i !NormalIdentifierRest +{ return c.text, nil } TableToken = "TABLE"i !NormalIdentifierRest +{ return c.text, nil } IndexToken = "INDEX"i !NormalIdentifierRest +{ return c.text, nil } UniqueToken = "UNIQUE"i !NormalIdentifierRest +{ return c.text, nil } DefaultToken = "DEFAULT"i !NormalIdentifierRest +{ return c.text, nil } PrimaryToken = "PRIMARY"i !NormalIdentifierRest +{ return c.text, nil } KeyToken = "KEY"i !NormalIdentifierRest +{ return c.text, nil } ReferencesToken = "REFERENCES"i !NormalIdentifierRest +{ return c.text, nil } AutoincrementToken = "AUTOINCREMENT"i !NormalIdentifierRest +{ return c.text, nil } OnToken = "ON"i !NormalIdentifierRest +{ return c.text, nil } TrueToken = "TRUE"i !NormalIdentifierRest -{ return toLower(c.text), nil } +{ return c.text, nil } FalseToken = "FALSE"i !NormalIdentifierRest -{ return toLower(c.text), nil } +{ return c.text, nil } NullToken = "NULL"i !NormalIdentifierRest +{ return c.text, nil } IsToken = "IS"i !NormalIdentifierRest +{ return c.text, nil } NullsToken = "NULLS"i !NormalIdentifierRest +{ return c.text, nil } LastToken = "LAST"i !NormalIdentifierRest -{ return toLower(c.text), nil } +{ return c.text, nil } FirstToken = "FIRST"i !NormalIdentifierRest -{ return toLower(c.text), nil } +{ return c.text, nil } AndToken = "AND"i !NormalIdentifierRest +{ return c.text, nil } OrToken = "OR"i !NormalIdentifierRest +{ return c.text, nil } NotToken = "NOT"i !NormalIdentifierRest +{ return c.text, nil } InToken = "IN"i !NormalIdentifierRest +{ return c.text, nil } LikeToken = "LIKE"i !NormalIdentifierRest +{ return c.text, nil } EscapeToken = "ESCAPE"i !NormalIdentifierRest +{ return c.text, nil } AscToken = "ASC"i !NormalIdentifierRest -{ return toLower(c.text), nil } +{ return c.text, nil } DescToken = "DESC"i !NormalIdentifierRest -{ return toLower(c.text), nil } +{ return c.text, nil } CastToken = "CAST"i !NormalIdentifierRest +{ return c.text, nil } AsToken = "AS"i !NormalIdentifierRest +{ return c.text, nil } SeparatorToken = "," @@ -1201,6 +1254,7 @@ StringIdentifier /* Skip */ _ = Whitespace* +{ return c.text, nil } Whitespace = "\t" // \x09 (HT) |