514 lines
18 KiB
Diff
514 lines
18 KiB
Diff
diff --git a/grammar.js b/grammar.js
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index 6d48b47..e700a18 100644
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--- a/grammar.js
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+++ b/grammar.js
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@@ -19,6 +19,7 @@ module.exports = grammar({
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$._LINE_COMMENT,
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$.comment_entry,
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$._multiline_string,
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+ $._exec_block,
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],
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extras: $ => [
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@@ -29,20 +30,30 @@ module.exports = grammar({
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$._LINE_COMMENT_ALIAS,
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$.copy_statement,
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$.comment,
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+ $.directive,
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],
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rules: {
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- start: $ => repeat(
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- choice(
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- $.program_definition,
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- //optional($.function_definition) //todo
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- )
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+ start: $ => optional(choice(
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+ repeat1($.program_definition),
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+ $.copybook_fragment,
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+ //optional($.function_definition) //todo
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+ )),
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+
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+ // A standalone copybook (.cpy): data descriptions or procedure code
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+ // without a program header.
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+ copybook_fragment: $ => choice(
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+ $.record_description_list,
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+ $._procedure_division_contenet
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),
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_LINE_COMMENT_ALIAS: $ => alias($._LINE_COMMENT, $.comment),
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comment: $ => /\*>[^\n]*/,
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+ // GnuCOBOL / COBOL-2002 compiler directives: >>SOURCE, >>IF, >>DEFINE, ...
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+ directive: $ => />>[^\n]*/,
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+
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program_definition: $ => prec.right(seq(
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$.identification_division,
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optional($.environment_division),
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@@ -60,7 +71,8 @@ module.exports = grammar({
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optional(choice(
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$.as_literal,
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$.is_initial,
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- $.is_common)),
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+ $.is_common,
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+ $.is_recursive)),
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'.')),
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repeat(choice(
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$.author_section,
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@@ -90,6 +102,11 @@ module.exports = grammar({
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$._COMMON
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),
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+ is_recursive: $ => seq(
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+ optional($._IS),
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+ $._RECURSIVE
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+ ),
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+
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author_section: $ => seq(
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$._AUTHOR, '.',
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field('comment', repeat1($.comment_entry)),
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@@ -102,17 +119,17 @@ module.exports = grammar({
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date_written_section: $ => seq(
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$._DATE_WRITTEN, '.',
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- field('comment', repeat1($.comment_entry)),
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+ field('comment', repeat($.comment_entry)),
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),
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date_compiled_section: $ => seq(
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$._DATE_COMPILED, '.',
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- field('comment', repeat1($.comment_entry)),
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+ field('comment', repeat($.comment_entry)),
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),
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security_section: $ => seq(
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$._SECURITY, '.',
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- field('comment', repeat1($.comment_entry)),
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+ field('comment', repeat($.comment_entry)),
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),
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function_definition: $ => seq(
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@@ -734,7 +751,7 @@ module.exports = grammar({
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file_description: $ => seq(
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$.file_type,
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$.file_description_entry,
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- $.record_description_list
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+ optional($.record_description_list)
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),
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file_type: $ => choice(
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@@ -870,12 +887,12 @@ module.exports = grammar({
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),
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record_description_list: $ => seq(
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- repeat1(seq($.data_description, repeat1('.')))
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+ repeat1(choice(seq($.data_description, repeat1('.')), prec(1, seq($.exec_statement, optional('.')))))
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),
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working_storage_section: $ => seq(
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$._WORKING_STORAGE, $._SECTION, '.',
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- repeat(seq($.data_description, repeat1('.')))
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+ repeat(choice(seq($.data_description, repeat1('.')), seq($.exec_statement, optional('.'))))
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),
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data_description: $ => choice(
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@@ -1070,7 +1087,7 @@ module.exports = grammar({
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$.picture_edit,
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),
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- picture_x: $ => /([xX](\([0-9]+\))?)+/,
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+ picture_x: $ => /([xX](\(([0-9]+|[a-zA-Z][a-zA-Z0-9-]*)\))?)+/,
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picture_n: $ => /([nN](\([0-9]+\))?)+/,
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@@ -1119,6 +1136,11 @@ module.exports = grammar({
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seq($.BINARY_SHORT, $.SIGNED),
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seq($.BINARY_SHORT, $.UNSIGNED),
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$.BINARY_SHORT,
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+ seq($.BINARY_LONG_LONG, $.SIGNED),
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+ seq($.BINARY_LONG_LONG, $.UNSIGNED),
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+ $.BINARY_LONG_LONG,
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+ $.FLOAT_LONG,
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+ $.FLOAT_SHORT,
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seq($.BINARY_LONG, $.SIGNED),
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seq($.BINARY_LONG, $.UNSIGNED),
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$.BINARY_LONG,
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@@ -1197,7 +1219,7 @@ module.exports = grammar({
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)),
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value_item: $ => seq(
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- $._literal,
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+ choice($._literal, $.qualified_word),
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optional(seq(
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$.THRU,
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$._literal
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@@ -1227,7 +1249,7 @@ module.exports = grammar({
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linkage_section: $ => seq(
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$._LINKAGE, $._SECTION, '.',
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- $.record_description_list
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+ optional($.record_description_list)
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),
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report_section: $ => /report_section/,
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@@ -1357,6 +1379,19 @@ module.exports = grammar({
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'.'
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),
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+ exec_statement: $ => $._exec_block,
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+
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+ free_statement: $ => prec.right(seq(
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+ $._FREE,
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+ repeat1($._target_x)
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+ )),
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+
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+ entry_statement: $ => prec.right(seq(
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+ $._ENTRY,
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+ field('name', $.string),
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+ optional(seq($._USING, repeat1($._call_param)))
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+ )),
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+
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end_program: $ => prec(1, seq(
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$._END_PROGRAM,
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$.program_name,
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@@ -1364,6 +1399,9 @@ module.exports = grammar({
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)),
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_statement: $ => choice(
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+ $.exec_statement,
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+ $.entry_statement,
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+ $.free_statement,
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$.accept_statement,
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$.add_statement,
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$.allocate_statement,
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@@ -1465,12 +1503,19 @@ module.exports = grammar({
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),
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replacing_clause: $ => seq(
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+ $._REPLACING,
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+ repeat1($.replacing_pair)
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+ ),
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+
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+ replacing_pair: $ => seq(
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field('leading_or_trailing', optional(choice($.LEADING, $.TRAILING))),
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- field('x', choice($.WORD, $.string)),
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- optional($._BY),
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- field('by', choice($.WORD, $.string)),
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+ field('x', choice($.pseudo_text, $.WORD, $.string)),
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+ $._BY,
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+ field('by', choice($.pseudo_text, $.WORD, $.string)),
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),
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+ pseudo_text: $ => /==([^=\n]|=[^=\n])*==/,
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+
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start_statement: $ => seq(
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$._START,
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field('file_name', $.WORD),
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@@ -1670,9 +1715,9 @@ module.exports = grammar({
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repeat1($._call_param)
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))),
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optional(choice(
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- field('returning', seq($._RETURNING, $._identifier),
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- field('giving', seq($._GIVING, $._identifier)),
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- )))
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+ field('returning', seq($._RETURNING, $._identifier)),
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+ field('giving', seq($._GIVING, $._identifier))
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+ ))
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),
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_call_param: $ => choice(
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@@ -1902,6 +1947,7 @@ module.exports = grammar({
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_evaluate_object: $ => choice(
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$.expr,
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+ prec.right(seq(choice('=', '>', '<', '>=', '<=', $._NOT_EQUAL), $.expr)),
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$.ANY,
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$.TRUE,
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$.FALSE
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@@ -1951,6 +1997,10 @@ module.exports = grammar({
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expr: $ => prec.left(choice(
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seq($.NOT, $.expr),
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seq($.expr, choice($.AND, $.OR), $.expr),
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+ // Abbreviated combined relation: `X < 0 OR > Y` — the subject of the
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+ // second comparison is implied. (The AND_LT/OR_GT combined tokens the
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+ // grammar carries for this never win against keyword lexing.)
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+ seq($.expr, choice($.AND, $.OR), $._comparator, $._expr_calc),
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$._expr_bool,
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seq("(", $.expr, ")")
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)),
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@@ -1965,6 +2015,11 @@ module.exports = grammar({
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)),
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_expr_calc_binary: $ => choice(
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+ prec.left(1, seq($._expr_calc, $.B_AND, $._expr_calc)),
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+ prec.left(1, seq($._expr_calc, $.B_OR, $._expr_calc)),
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+ prec.left(1, seq($._expr_calc, $.B_XOR, $._expr_calc)),
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+ prec.left(1, seq($._expr_calc, $.B_SHIFT_L, $._expr_calc)),
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+ prec.left(1, seq($._expr_calc, $.B_SHIFT_R, $._expr_calc)),
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prec.left(1, seq($._expr_calc, '+', $._expr_calc)),
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prec.left(1, seq($._expr_calc, '-', $._expr_calc)),
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prec.left(2, seq($._expr_calc, '**', $._expr_calc)),
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@@ -1974,6 +2029,7 @@ module.exports = grammar({
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),
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_expr_calc_unary: $ => prec(4, choice(
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+ seq($.B_NOT, $._expr_calc),
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seq('+', $._expr_calc),
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seq('-', $._expr_calc),
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seq('^', $._expr_calc),
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@@ -2753,7 +2809,7 @@ module.exports = grammar({
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seq($.TRIM_FUNCTION, '(', $._trim_args, ')', optional($.func_refmod)),
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seq($.NUMVALC_FUNC, '(', $._numvalc_args, ')'),
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seq($.LOCALE_DT_FUNC, '(', $._locale_dt_args, ')', optional($.func_refmod)),
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- seq($.WORD, optional($.func_args)),
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+ seq($.WORD, optional($.func_args), optional($.func_refmod)),
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))),
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func_refmod: $ => choice(
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@@ -2868,6 +2924,16 @@ module.exports = grammar({
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_BINARY_CHAR: $ => /[bB][iI][nN][aA][rR][yY]-[cC][hH][aA][rR]/,
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_BINARY_DOUBLE: $ => /[bB][iI][nN][aA][rR][yY]-[dD][oO][uU][bB][lL][eE]/,
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_BINARY_LONG: $ => /[bB][iI][nN][aA][rR][yY]-[lL][oO][nN][gG]/,
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+ _BINARY_LONG_LONG: $ => /[bB][iI][nN][aA][rR][yY]-[lL][oO][nN][gG]-[lL][oO][nN][gG]/,
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+ _FREE: $ => /[fF][rR][eE][eE]/,
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+ B_AND: $ => /[bB]-[aA][nN][dD]/,
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+ B_OR: $ => /[bB]-[oO][rR]/,
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+ B_XOR: $ => /[bB]-[xX][oO][rR]/,
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+ B_NOT: $ => /[bB]-[nN][oO][tT]/,
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+ B_SHIFT_L: $ => /[bB]-[sS][hH][iI][fF][tT]-[lL][cC]?/,
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+ B_SHIFT_R: $ => /[bB]-[sS][hH][iI][fF][tT]-[rR][cC]?/,
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+ _FLOAT_LONG: $ => /[fF][lL][oO][aA][tT]-[lL][oO][nN][gG]/,
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+ _FLOAT_SHORT: $ => /[fF][lL][oO][aA][tT]-[sS][hH][oO][rR][tT]/,
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_BINARY_SHORT: $ => /[bB][iI][nN][aA][rR][yY]-[sS][hH][oO][rR][tT]/,
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_BLANK: $ => /[bB][lL][aA][nN][kK]/,
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_BLANK_LINE: $ => /[bB][lL][aA][nN][kK]-[lL][iI][nN][eE]/,
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@@ -3335,6 +3401,9 @@ module.exports = grammar({
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BINARY_CHAR: $ => $._BINARY_CHAR,
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BINARY_DOUBLE: $ => $._BINARY_DOUBLE,
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BINARY_LONG: $ => $._BINARY_LONG,
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+ BINARY_LONG_LONG: $ => $._BINARY_LONG_LONG,
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+ FLOAT_LONG: $ => $._FLOAT_LONG,
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+ FLOAT_SHORT: $ => $._FLOAT_SHORT,
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BINARY_SHORT: $ => $._BINARY_SHORT,
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//BLANK: $ => $._BLANK,
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BLANK_LINE: $ => $._BLANK_LINE,
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@@ -3754,7 +3823,7 @@ module.exports = grammar({
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COMPUTATIONAL: $ => $._COMPUTATIONAL,
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_COMPUTATIONAL: $ => /[cC][oO][mM][pP][uU][tT][aA][tT][iI][oO][nN][aA][lL]/,
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- _NOT_EQUAL: $ => /(!=)|([nN][oO][tT][ \t]+(([eE][qQ][uU][aA][lL])|=))/,
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+ _NOT_EQUAL: $ => /(!=)|([nN][oO][tT]([ \t]+[eE][qQ][uU][aA][lL]|[ \t]*=))/,
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_NOT_LESS: $ => /([nN][oO][tT][ \t]+(<|[lL][eE][sS][sS]))/,
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_NOT_GREATER: $ => /([nN][oO][tT][ \t]+(>|[gG][rR][eE][aA][tT][eE][rR]))/,
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diff --git a/src/scanner.c b/src/scanner.c
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index 6c1ae90..b69cf53 100644
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--- a/src/scanner.c
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+++ b/src/scanner.c
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@@ -1,4 +1,5 @@
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#include <tree_sitter/parser.h>
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+#include <stdlib.h>
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#include <wctype.h>
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enum TokenType {
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@@ -8,10 +9,21 @@ enum TokenType {
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LINE_COMMENT,
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COMMENT_ENTRY,
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multiline_string,
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+ EXEC_BLOCK,
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};
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+// Wide mode: a preprocessor that converts free-format COBOL to fixed format
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+// by left-padding every line 7 columns writes the sentinel "CGWIDE" into the
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+// sequence area (columns 1-6) of the FIRST line. Free-format lines routinely
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+// run past column 72, so when the sentinel is seen the fixed-format right
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+// margin (column 73+ = ignored identification area) is pushed out of reach.
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+// The one-byte flag is scanner state, carried through serialize/deserialize.
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+#define CG_FIXED_WIDTH 72
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+#define CG_WIDE_WIDTH 4096
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+static const char CG_WIDE_SENTINEL[6] = {'C', 'G', 'W', 'I', 'D', 'E'};
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+
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void *tree_sitter_COBOL_external_scanner_create() {
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- return NULL;
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+ return calloc(1, 1);
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}
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static bool is_white_space(int c) {
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@@ -31,7 +43,7 @@ char* any_content_keyword[] = {
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"procedure division",
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};
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-static bool start_with_word( TSLexer *lexer, char *words[], int number_of_words) {
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+static bool start_with_word( TSLexer *lexer, char *words[], int number_of_words, int width) {
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while(lexer->lookahead == ' ' || lexer->lookahead == '\t') {
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lexer->advance(lexer, true);
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}
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@@ -45,7 +57,7 @@ static bool start_with_word( TSLexer *lexer, char *words[], int number_of_words)
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while(true) {
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// At the end of the line
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- if(lexer->get_column(lexer) > 71 || lexer->lookahead == '\n' || lexer->lookahead == 0) {
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+ if(lexer->get_column(lexer) > width - 1 || lexer->lookahead == '\n' || lexer->lookahead == 0) {
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return false;
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}
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@@ -58,7 +70,7 @@ static bool start_with_word( TSLexer *lexer, char *words[], int number_of_words)
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}
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if(all_match_failed) {
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- for(; lexer->get_column(lexer) < 71 && lexer->lookahead != '\n' && lexer->lookahead != 0;
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+ for(; lexer->get_column(lexer) < width - 1 && lexer->lookahead != '\n' && lexer->lookahead != 0;
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lexer->advance(lexer, true)) {
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}
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return false;
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@@ -94,6 +106,9 @@ bool tree_sitter_COBOL_external_scanner_scan(void *payload, TSLexer *lexer,
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return false;
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}
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+ char *wide = (char *)payload;
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+ const int width = (wide && *wide) ? CG_WIDE_WIDTH : CG_FIXED_WIDTH;
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+
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if(valid_symbols[WHITE_SPACES]) {
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if(is_white_space(lexer->lookahead)) {
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while(is_white_space(lexer->lookahead)) {
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@@ -106,9 +121,20 @@ bool tree_sitter_COBOL_external_scanner_scan(void *payload, TSLexer *lexer,
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}
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if(valid_symbols[LINE_PREFIX_COMMENT] && lexer->get_column(lexer) <= 5) {
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+ // The sequence area is ignored content — but the free-format
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+ // preprocessor plants the CGWIDE sentinel here on the first line.
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+ int match = 0;
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while(lexer->get_column(lexer) <= 5) {
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+ if(match >= 0 && match < 6 && lexer->lookahead == CG_WIDE_SENTINEL[match]) {
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+ match++;
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+ } else {
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+ match = -1;
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+ }
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lexer->advance(lexer, true);
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}
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+ if(match == 6 && wide) {
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+ *wide = 1;
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+ }
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lexer->result_symbol = LINE_PREFIX_COMMENT;
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lexer->mark_end(lexer);
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return true;
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@@ -132,7 +158,7 @@ bool tree_sitter_COBOL_external_scanner_scan(void *payload, TSLexer *lexer,
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}
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if(valid_symbols[LINE_SUFFIX_COMMENT]) {
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- if(lexer->get_column(lexer) >= 72) {
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+ if(lexer->get_column(lexer) >= width) {
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while(lexer->lookahead != '\n' && lexer->lookahead != 0) {
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lexer->advance(lexer, true);
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}
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@@ -143,7 +169,7 @@ bool tree_sitter_COBOL_external_scanner_scan(void *payload, TSLexer *lexer,
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}
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if(valid_symbols[COMMENT_ENTRY]) {
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- if(!start_with_word(lexer, any_content_keyword, number_of_comment_entry_keywords)) {
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+ if(!start_with_word(lexer, any_content_keyword, number_of_comment_entry_keywords, width)) {
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lexer->mark_end(lexer);
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lexer->result_symbol = COMMENT_ENTRY;
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return true;
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@@ -152,18 +178,66 @@ bool tree_sitter_COBOL_external_scanner_scan(void *payload, TSLexer *lexer,
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}
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}
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+ if(valid_symbols[EXEC_BLOCK]) {
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+ // EXEC (CICS|SQL|DLI|...) ... END-EXEC embedded block. Match the word
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+ // EXEC (case-insensitive) followed by whitespace, then consume through
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+ // the next END-EXEC. On any mismatch return false so the internal
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+ // lexer re-reads the same characters as an ordinary WORD.
|
|
+ if(lexer->lookahead == 'e' || lexer->lookahead == 'E') {
|
|
+ const char *kw = "exec";
|
|
+ int ki = 0;
|
|
+ while(ki < 4 && (lexer->lookahead == towupper(kw[ki]) || lexer->lookahead == towlower(kw[ki]))) {
|
|
+ lexer->advance(lexer, false);
|
|
+ ki++;
|
|
+ }
|
|
+ if(ki == 4 && (lexer->lookahead == ' ' || lexer->lookahead == '\t' ||
|
|
+ lexer->lookahead == '\n' || lexer->lookahead == '\r')) {
|
|
+ char ring[8] = {0,0,0,0,0,0,0,0};
|
|
+ while(lexer->lookahead != 0) {
|
|
+ for(int i = 0; i < 7; ++i) ring[i] = ring[i+1];
|
|
+ ring[7] = (char)towlower(lexer->lookahead);
|
|
+ lexer->advance(lexer, false);
|
|
+ if(ring[0]=='e' && ring[1]=='n' && ring[2]=='d' && ring[3]=='-' &&
|
|
+ ring[4]=='e' && ring[5]=='x' && ring[6]=='e' && ring[7]=='c') {
|
|
+ lexer->result_symbol = EXEC_BLOCK;
|
|
+ lexer->mark_end(lexer);
|
|
+ return true;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ return false;
|
|
+ }
|
|
+ }
|
|
+
|
|
if(valid_symbols[multiline_string]) {
|
|
+ int quote = lexer->lookahead;
|
|
+ if(quote != '"' && quote != '\'') {
|
|
+ return false;
|
|
+ }
|
|
while(true) {
|
|
- if(lexer->lookahead != '"') {
|
|
+ if(lexer->lookahead != quote) {
|
|
return false;
|
|
}
|
|
lexer->advance(lexer, false);
|
|
- while(lexer->lookahead != '"' && lexer->lookahead != 0 && lexer->get_column(lexer) < 72) {
|
|
+ bool closed = false;
|
|
+ while(true) {
|
|
+ while(lexer->lookahead != quote && lexer->lookahead != 0 && lexer->get_column(lexer) < width) {
|
|
+ lexer->advance(lexer, false);
|
|
+ }
|
|
+ if(lexer->lookahead != quote) {
|
|
+ break;
|
|
+ }
|
|
lexer->advance(lexer, false);
|
|
+ if(lexer->lookahead == quote) {
|
|
+ // doubled quote = escaped quote inside the literal
|
|
+ lexer->advance(lexer, false);
|
|
+ continue;
|
|
+ }
|
|
+ closed = true;
|
|
+ break;
|
|
}
|
|
- if(lexer->lookahead == '"') {
|
|
+ if(closed) {
|
|
lexer->result_symbol = multiline_string;
|
|
- lexer->advance(lexer, false);
|
|
lexer->mark_end(lexer);
|
|
return true;
|
|
}
|
|
@@ -187,7 +261,7 @@ bool tree_sitter_COBOL_external_scanner_scan(void *payload, TSLexer *lexer,
|
|
}
|
|
|
|
lexer->advance(lexer, true);
|
|
- while(lexer->lookahead == ' ' && lexer->get_column(lexer) < 72) {
|
|
+ while(lexer->lookahead == ' ' && lexer->get_column(lexer) < width) {
|
|
lexer->advance(lexer, true);
|
|
}
|
|
}
|
|
@@ -197,11 +271,19 @@ bool tree_sitter_COBOL_external_scanner_scan(void *payload, TSLexer *lexer,
|
|
}
|
|
|
|
unsigned tree_sitter_COBOL_external_scanner_serialize(void *payload, char *buffer) {
|
|
+ if(payload && buffer) {
|
|
+ buffer[0] = *(char *)payload;
|
|
+ return 1;
|
|
+ }
|
|
return 0;
|
|
}
|
|
|
|
void tree_sitter_COBOL_external_scanner_deserialize(void *payload, const char *buffer, unsigned length) {
|
|
+ if(payload) {
|
|
+ *(char *)payload = (buffer && length >= 1) ? buffer[0] : 0;
|
|
+ }
|
|
}
|
|
|
|
void tree_sitter_COBOL_external_scanner_destroy(void *payload) {
|
|
+ free(payload);
|
|
}
|