Language.HERMIT.Expr

HERMIT Expressions

This is the untyped command and control language for HERMIT.

data ExprH

A simple expression language AST, for things parsed from String or JSON structures.

Constructors

SrcName String

Variable names (refers to source code).

CmdName String

Commands (to be looked up in Dictionary).

AppH ExprH ExprH

Application.

Instances

Eq ExprH

Show ExprH

data StmtH expr

Nested lists to represent scoping structure.

Constructors

ExprH expr

ScopeH [StmtH expr]

Instances

Show expr => Show (StmtH expr)

parseExprH :: String -> Either String ExprH

Parse an expression.

parseStmtsH :: String -> Either String [StmtH ExprH]

Parse a list of statements, seperated by semicolons.

unparseExprH :: ExprH -> String

unparseStmtH :: StmtH ExprH -> String

unparseStmtsH :: [StmtH ExprH] -> String

numStmtsH :: [StmtH expr] -> Int

Count the total number of statements.