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🖋️ Refactor common grammar to avoid unwanted greedy terminals

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This commit is contained in:
Thomas Di Cizerone
2025-03-23 22:12:35 +01:00
parent ceb8d4c7ef
commit 9795b6e089
9 changed files with 60 additions and 116 deletions
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2
packages/parser/src/language/architecture/arch.langium Normal file
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@@ -0,0 +1,2 @@
terminal ARCH_ICON: /\([\w-:]+\)/;
terminal ARCH_TITLE: /\[[\w ]+\]/;

21
packages/parser/src/language/architecture/architecture.langium
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@@ -1,14 +1,15 @@
grammar Architecture
import "../common/common";
import "arch";
entry Architecture:
NEWLINE*
"architecture-beta"
(
NEWLINE* TitleAndAccessibilities
| NEWLINE* Statement*
| NEWLINE*
)
NEWLINE
| TitleAndAccessibilities
| Statement
)*
;
fragment Statement:
@@ -31,25 +32,21 @@ fragment Arrow:
;
Group:
'group' id=ARCH_ID icon=ARCH_ICON? title=ARCH_TITLE? ('in' in=ARCH_ID)? EOL
'group' id=ID icon=ARCH_ICON? title=ARCH_TITLE? ('in' in=ID)? EOL
;
Service:
'service' id=ARCH_ID (iconText=ARCH_TEXT_ICON | icon=ARCH_ICON)? title=ARCH_TITLE? ('in' in=ARCH_ID)? EOL
'service' id=ID (iconText=STRING | icon=ARCH_ICON)? title=ARCH_TITLE? ('in' in=ID)? EOL
;
Junction:
'junction' id=ARCH_ID ('in' in=ARCH_ID)? EOL
'junction' id=ID ('in' in=ID)? EOL
;
Edge:
lhsId=ARCH_ID lhsGroup?=ARROW_GROUP? Arrow rhsId=ARCH_ID rhsGroup?=ARROW_GROUP? EOL
lhsId=ID lhsGroup?=ARROW_GROUP? Arrow rhsId=ID rhsGroup?=ARROW_GROUP? EOL
;
terminal ARROW_DIRECTION: 'L' | 'R' | 'T' | 'B';
terminal ARCH_ID: /[\w]+/;
terminal ARCH_TEXT_ICON: /\("[^"]+"\)/;
terminal ARCH_ICON: /\([\w-:]+\)/;
terminal ARCH_TITLE: /\[[\w ]+\]/;
terminal ARROW_GROUP: /\{group\}/;
terminal ARROW_INTO: /<|>/;

33
packages/parser/src/language/common/common.langium
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@@ -1,22 +1,35 @@
interface Common {
accDescr?: string;
accTitle?: string;
title?: string;
}
fragment TitleAndAccessibilities:
((accDescr=ACC_DESCR | accTitle=ACC_TITLE | title=TITLE) EOL)+
;
// Base terminals and fragments for common language constructs
// Terminal Precedence: Lazy to Greedy
// When imported, the terminals are considered after the terminals in the importing grammar
// Note: Hence, to add a terminal greedier than the common terminals, import the common grammar first
fragment EOL returns string:
NEWLINE+ | EOF
;
terminal NEWLINE: /\r?\n/;
fragment TitleAndAccessibilities:
((accDescr=ACC_DESCR | accTitle=ACC_TITLE | title=TITLE) EOL)+
;
terminal BOOLEAN returns boolean: 'true' | 'false';
terminal ACC_DESCR: /[\t ]*accDescr(?:[\t ]*:([^\n\r]*?(?=%%)|[^\n\r]*)|\s*{([^}]*)})/;
terminal ACC_TITLE: /[\t ]*accTitle[\t ]*:(?:[^\n\r]*?(?=%%)|[^\n\r]*)/;
terminal TITLE: /[\t ]*title(?:[\t ][^\n\r]*?(?=%%)|[\t ][^\n\r]*|)/;
terminal FLOAT returns number: /[0-9]+\.[0-9]+(?!\.)/;
terminal INT returns number: /0|[1-9][0-9]*(?!\.)/;
terminal NUMBER returns number: FLOAT | INT;
terminal STRING returns string: /"([^"\\]|\\.)*"|'([^'\\]|\\.)*'/;
// Alphanumerics with underscores and dashes
// Must start with an alphanumeric or an underscore
// Cant end with a dash
terminal ID returns string: /[\w]([-\w]*\w)?/;
terminal NEWLINE: /\r?\n/;
hidden terminal WHITESPACE: /[\t ]+/;
hidden terminal YAML: /---[\t ]*\r?\n(?:[\S\s]*?\r?\n)?---(?:\r?\n|(?!\S))/;
hidden terminal DIRECTIVE: /[\t ]*%%{[\S\s]*?}%%(?:\r?\n|(?!\S))/;

49
packages/parser/src/language/gitGraph/gitGraph.langium
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@@ -1,39 +1,15 @@
grammar GitGraph
interface Common {
accDescr?: string;
accTitle?: string;
title?: string;
}
fragment TitleAndAccessibilities:
((accDescr=ACC_DESCR | accTitle=ACC_TITLE | title=TITLE) EOL)+
;
fragment EOL returns string:
NEWLINE+ | EOF
;
terminal NEWLINE: /\r?\n/;
terminal ACC_DESCR: /[\t ]*accDescr(?:[\t ]*:([^\n\r]*?(?=%%)|[^\n\r]*)|\s*{([^}]*)})/;
terminal ACC_TITLE: /[\t ]*accTitle[\t ]*:(?:[^\n\r]*?(?=%%)|[^\n\r]*)/;
terminal TITLE: /[\t ]*title(?:[\t ][^\n\r]*?(?=%%)|[\t ][^\n\r]*|)/;
hidden terminal WHITESPACE: /[\t ]+/;
hidden terminal YAML: /---[\t ]*\r?\n(?:[\S\s]*?\r?\n)?---(?:\r?\n|(?!\S))/;
hidden terminal DIRECTIVE: /[\t ]*%%{[\S\s]*?}%%(?:\r?\n|(?!\S))/;
hidden terminal SINGLE_LINE_COMMENT: /[\t ]*%%[^\n\r]*/;
import "../common/common";
import "reference";
entry GitGraph:
NEWLINE*
('gitGraph' | 'gitGraph' ':' | 'gitGraph:' | ('gitGraph' Direction ':'))
NEWLINE*
(
NEWLINE*
(TitleAndAccessibilities |
statements+=Statement |
NEWLINE)*
)
NEWLINE
| TitleAndAccessibilities
| statements+=Statement
)*
;
Statement
@@ -56,12 +32,12 @@ Commit:
|'type:' type=('NORMAL' | 'REVERSE' | 'HIGHLIGHT')
)* EOL;
Branch:
'branch' name=(ID|STRING)
'branch' name=(REFERENCE|STRING)
('order:' order=INT)?
EOL;
Merge:
'merge' branch=(ID|STRING)
'merge' branch=(REFERENCE|STRING)
(
'id:' id=STRING
|'tag:' tags+=STRING
@@ -69,7 +45,7 @@ Merge:
)* EOL;
Checkout:
('checkout'|'switch') branch=(ID|STRING) EOL;
('checkout'|'switch') branch=(REFERENCE|STRING) EOL;
CherryPicking:
'cherry-pick'
@@ -78,10 +54,3 @@ CherryPicking:
|'tag:' tags+=STRING
|'parent:' parent=STRING
)* EOL;
terminal INT returns number: /[0-9]+(?=\s)/;
terminal ID returns string: /\w([-\./\w]*[-\w])?/;
terminal STRING: /"[^"]*"|'[^']*'/;

4
packages/parser/src/language/gitGraph/reference.langium Normal file
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@@ -0,0 +1,4 @@
// Alphanumerics with underscores, dashes, slashes, and dots
// Must start with an alphanumeric or an underscore
// Cant end with a dash, slash, or dot
terminal REFERENCE returns string: /\w([-\./\w]*[-\w])?/;

1
packages/parser/src/language/index.ts
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@@ -12,7 +12,6 @@ export {
Commit,
Merge,
Statement,
isCommon,
isInfo,
isPacket,
isPacketBlock,

11
packages/parser/src/language/packet/packet.langium
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@@ -5,15 +5,12 @@ entry Packet:
NEWLINE*
"packet-beta"
(
NEWLINE* TitleAndAccessibilities blocks+=PacketBlock*
| NEWLINE+ blocks+=PacketBlock+
| NEWLINE*
)
TitleAndAccessibilities
| blocks+=PacketBlock
| NEWLINE
)*
;
PacketBlock:
start=INT('-' end=INT)? ':' label=STRING EOL
;
terminal INT returns number: /0|[1-9][0-9]*/;
terminal STRING: /"[^"]*"|'[^']*'/;

13
packages/parser/src/language/pie/pie.langium
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@@ -5,15 +5,12 @@ entry Pie:
NEWLINE*
"pie" showData?="showData"?
(
NEWLINE* TitleAndAccessibilities sections+=PieSection*
| NEWLINE+ sections+=PieSection+
| NEWLINE*
)
TitleAndAccessibilities
| sections+=PieSection
| NEWLINE
)*
;
PieSection:
label=PIE_SECTION_LABEL ":" value=PIE_SECTION_VALUE EOL
label=STRING ":" value=NUMBER EOL
;
terminal PIE_SECTION_LABEL: /"[^"]+"/;
terminal PIE_SECTION_VALUE returns number: /(0|[1-9][0-9]*)(\.[0-9]+)?/;

36
packages/parser/src/language/radar/radar.langium
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@@ -1,31 +1,5 @@
grammar Radar
// import "../common/common";
// Note: The import statement breaks TitleAndAccessibilities probably because of terminal order definition
// TODO: May need to change the common.langium to fix this
interface Common {
accDescr?: string;
accTitle?: string;
title?: string;
}
fragment TitleAndAccessibilities:
((accDescr=ACC_DESCR | accTitle=ACC_TITLE | title=TITLE) EOL)+
;
fragment EOL returns string:
NEWLINE+ | EOF
;
terminal NEWLINE: /\r?\n/;
terminal ACC_DESCR: /[\t ]*accDescr(?:[\t ]*:([^\n\r]*?(?=%%)|[^\n\r]*)|\s*{([^}]*)})/;
terminal ACC_TITLE: /[\t ]*accTitle[\t ]*:(?:[^\n\r]*?(?=%%)|[^\n\r]*)/;
terminal TITLE: /[\t ]*title(?:[\t ][^\n\r]*?(?=%%)|[\t ][^\n\r]*|)/;
hidden terminal WHITESPACE: /[\t ]+/;
hidden terminal YAML: /---[\t ]*\r?\n(?:[\S\s]*?\r?\n)?---(?:\r?\n|(?!\S))/;
hidden terminal DIRECTIVE: /[\t ]*%%{[\S\s]*?}%%(?:\r?\n|(?!\S))/;
hidden terminal SINGLE_LINE_COMMENT: /[\t ]*%%[^\n\r]*/;
import "../common/common";
entry Radar:
NEWLINE*
@@ -78,12 +52,4 @@ Option:
)
;
terminal NUMBER returns number: /(0|[1-9][0-9]*)(\.[0-9]+)?/;
terminal BOOLEAN returns boolean: 'true' | 'false';
terminal GRATICULE returns string: 'circle' | 'polygon';
terminal ID returns string: /[a-zA-Z_][a-zA-Z0-9\-_]*/;
terminal STRING: /"[^"]*"|'[^']*'/;