Browsable COBOL 1.0 Grammar

Grammar extracted by Vadim Zaytsev, see the Grammar Zoo entry for details: cobol/bruneliere/extracted
Source used for this grammar: Hugo Brunelière, COBOL 1.0, COBOL.ecore, 2005/08/08

Summary

• Total 21 production rules with 37 top alternatives and 165 symbols.
• Vocabulary: 64 = 17 nonterminals + 2 terminals + 45 labels + 0 markers.
• Total 17 nonterminal symbols: 17 defined (COBOLUsageValue, COBOLInitialValueKind, COBOLElement, COBOLClassifier, COBOLSimpleType, COBOLComposedType, COBOLElementInitialValue, COBOL88Element, COBOL88ElementValue, COBOLRedefiningElement, COBOL66Element, COBOLSourceText, COBOLFixedLengthArray, COBOLVariableLengthArray, Integer, String, Boolean), 0 root (—), 1 top (COBOL66Element), 0 bottom (—).
• Total 2 terminal symbols: 2 keywords ("true", "false"), 0 letters (—), 0 numerics (—), 0 signs (—).
• Total 45 labels: [cuv_binary], [cuv_dbcs], [cuv_double], [cuv_display], [cuv_float], [cuv_index], [cuv_objectReference], [cuv_packedDecimal], [cuv_pointer], [cuv_procedurePointer], [civk_string_value], [civk_low_value], [civk_high_value], [civk_zero_value], [civk_quotes], [civk_null], [civk_all_literal], [level], [refined], [name] ⁴, [sharedType], [group], [initial], [contains], [source] ², [array], [typeded], [typedElements], [usageValue], [pictureString], [usage], [elements], [initVal], [valueKind], [has], [lowerLimit], [upperLimit], [range], [redefines], [end], [start], [fileName], [maxUpper], [minUpper], [dependingOn].

Syntax

COBOLUsageValue ::=
	[cuv_binary]::ε
	[cuv_dbcs]::ε
	[cuv_double]::ε
	[cuv_display]::ε
	[cuv_float]::ε
	[cuv_index]::ε
	[cuv_objectReference]::ε
	[cuv_packedDecimal]::ε
	[cuv_pointer]::ε
	[cuv_procedurePointer]::ε

COBOLInitialValueKind ::=
	[civk_string_value]::ε
	[civk_low_value]::ε
	[civk_high_value]::ε
	[civk_zero_value]::ε
	[civk_quotes]::ε
	[civk_null]::ε
	[civk_all_literal]::ε

COBOLElement ::=
	COBOLRedefiningElement

COBOLElement ::=
	[level]::String [refined]::Boolean [name]::String [sharedType]::COBOLClassifier [group]::COBOLComposedType [initial]::COBOLElementInitialValue+ [contains]::COBOL88Element+ [source]::COBOLSourceText [array]::COBOLFixedLengthArray

COBOLClassifier ::=
	COBOLSimpleType

COBOLClassifier ::=
	COBOLComposedType

COBOLClassifier ::=
	[typeded]::Boolean [name]::String [typedElements]::COBOLElement+

COBOLSimpleType ::=
	[usageValue]::COBOLUsageValue [pictureString]::String [usage]::Boolean

COBOLComposedType ::=
	[elements]::COBOLElement+

COBOLElementInitialValue ::=
	[initVal]::String [valueKind]::COBOLInitialValueKind

COBOL88Element ::=
	[name]::String [has]::COBOL88ElementValue+

COBOL88ElementValue ::=
	[lowerLimit]::String [upperLimit]::String [range]::Boolean

COBOLRedefiningElement ::=
	[redefines]::COBOLElement

COBOL66Element ::=
	[name]::String [end]::COBOLElement [start]::COBOLElement

COBOLSourceText ::=
	[source]::String [fileName]::String

COBOLFixedLengthArray ::=
	COBOLVariableLengthArray

COBOLFixedLengthArray ::=
	[maxUpper]::Integer

COBOLVariableLengthArray ::=
	[minUpper]::Integer [dependingOn]::COBOLElement

Integer ::=
	integer

String ::=
	string

Boolean ::=
	"true"
	"false"

Maintained by Dr. Vadim Zaytsev a.k.a. @grammarware. Last updated in September 2015. [↑]