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d: demonstrate the token constructors

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* examples/d/calc/calc.y: Use the token constructors in the 'calc' example.
This commit is contained in:
Adela Vais
2021-04-18 12:56:47 +03:00
committed by Akim Demaille
parent 7eee2ccbd2
commit 5c554ea8a3
1 changed files with 10 additions and 9 deletions
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19
examples/d/calc/calc.y
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@@ -23,6 +23,7 @@
%define parse.error detailed %define parse.error detailed
%define parse.trace %define parse.trace
%define api.push-pull push %define api.push-pull push
%define api.token.constructor
%locations %locations
@@ -122,7 +123,7 @@ if (isInputRange!R && is(ElementType!R : dchar))
location.step(); location.step();
if (input.empty) if (input.empty)
return Symbol(TokenKind.YYEOF, location); return Symbol.YYEOF(location);
// Numbers. // Numbers.
if (input.front.isNumber) if (input.front.isNumber)
@@ -149,7 +150,7 @@ if (isInputRange!R && is(ElementType!R : dchar))
copy.popFront; copy.popFront;
} }
} }
return Symbol(TokenKind.NUM, ival, location); return Symbol.NUM(ival, location);
} }
// Individual characters // Individual characters
@@ -158,17 +159,17 @@ if (isInputRange!R && is(ElementType!R : dchar))
location.end.column++; location.end.column++;
switch (ch) switch (ch)
{ {
case '+': return Symbol(TokenKind.PLUS, location); case '+': return Symbol.PLUS(location);
case '-': return Symbol(TokenKind.MINUS, location); case '-': return Symbol.MINUS(location);
case '*': return Symbol(TokenKind.STAR, location); case '*': return Symbol.STAR(location);
case '/': return Symbol(TokenKind.SLASH, location); case '/': return Symbol.SLASH(location);
case '(': return Symbol(TokenKind.LPAR, location); case '(': return Symbol.LPAR(location);
case ')': return Symbol(TokenKind.RPAR, location); case ')': return Symbol.RPAR(location);
case '\n': case '\n':
{ {
location.end.line++; location.end.line++;
location.end.column = 1; location.end.column = 1;
return Symbol(TokenKind.EOL, location); return Symbol.EOL(location);
} }
default: assert(0); default: assert(0);
} }