Parser::CellAtomGrammar Struct Reference

Singleton class encapsulating the grammar for the CellAtom language. More...

#include <parser.hh>

Collaboration diagram for Parser::CellAtomGrammar:

Static Public Member Functions
static const CellAtomGrammar &	get ()
	Returns a singleton instance of this grammar.

Public Attributes
Rule	whitespace = ' '_E | '\t' | nl('\n')
	Whitespace: spaces, tabs, newlines.
Rule	comment
	Comments, including tracking newlines inside comments via the whitespace rule. More...
Rule	ignored = *(comment | whitespace)
	Rule for treating both comments and whitespace as ignored tokens.
Rule	digit = '0'_E - '9'
	Decimal digits.
Rule	literal = +digit
	Literal values are one or more digits.
Rule	v_reg = 'v'_E
	The current-value register v.
Rule	local_reg = 'a' >> digit
	Local registers, l0 to l9.
Rule	global_reg = 'g' >> digit
	Global registers, g0 to g9.
Rule	reg = v_reg | local_reg | global_reg
	Any register.
Rule	op = '+'_E | '=' |'-' | '*' | '/' | "min" | "max"
	Operation keywords.
Rule	arithmetic = op >> reg >> expression
	Arithmetic statements are an operation, a target register, and an expression.
Rule	neighbours = "neighbours"_E >> '(' >> statements >> ')'
	Neighbours expressions are simple a keyword and then a statement list in brackets.
Rule	range = literal | ('('_E >> literal >> ',' >> literal >> ')')
	The range part of a range expression (either a single value or an inclusive range).
Rule	range_expr = range >> "=>" >> expression
	A single entry in a range map: the source range and the target expression.
Rule	range_map
	A range map, evaluating to a different expression depending on the value in the register argument. More...
Rule	expression = literal | reg | range_map
	Valid expressions in this language are.
Rule	statement = neighbours | arithmetic
	Valid statements in this language are the arithmetic statements or neighbours statements.
Rule	statements = *statement
	List of zero or more statements.

Detailed Description

Singleton class encapsulating the grammar for the CellAtom language.

Definition at line 35 of file parser.hh.

Member Data Documentation

Rule Parser::CellAtomGrammar::comment

Initial value:

= '"' >>
                           (*(!ExprPtr('"'_E) >> (nl('\n') | any()))) >>
                           '"'

Comments, including tracking newlines inside comments via the whitespace rule.

Definition at line 45 of file parser.hh.

Rule Parser::CellAtomGrammar::range_map

Initial value:

= '['_E >> reg >> '|' >>
                            +range_expr >> *(','_E >> range_expr) >>']'

A range map, evaluating to a different expression depending on the value in the register argument.

Definition at line 104 of file parser.hh.

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The documentation for this struct was generated from the following file:

• parser.hh