99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
/* T O K E N D E F I N I T I O N S */
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#include "Lpars.h"
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#include "idf.h"
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#include "tokenname.h"
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/* To centralize the declaration of %tokens, their presence in this
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file is taken as their declaration. The Makefile will produce
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a grammar file (tokenfile.g) from this file. This scheme ensures
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that all tokens have a printable name.
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Also, the "symbol2str.c" file is produced from this file.
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*/
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struct tokenname tkspec[] = { /* the names of the special tokens */
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{IDENT, "identifier"},
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{STRING, "string"},
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{INTEGER, "integer"},
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{REAL, "real"},
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{0, ""}
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};
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struct tokenname tkcomp[] = { /* names of the composite tokens */
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{LESSEQUAL, "<="},
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{GREATEREQUAL, ">="},
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{NOTEQUAL, "<>"},
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{UPTO, ".."},
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{BECOMES, ":="},
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{0, ""}
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};
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struct tokenname tkidf[] = { /* names of the identifier tokens */
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{AND, "and"},
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{ARRAY, "array"},
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{BEGIN, "begin"},
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{CASE, "case"},
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{CONST, "const"},
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{DIV, "div"},
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{DO, "do"},
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{DOWNTO, "downto"},
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{ELSE, "else"},
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{END, "end"},
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{FILE, "file"},
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{FOR, "for"},
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{FUNCTION, "function"},
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{GOTO, "goto"},
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{IF, "if"},
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{IN, "in"},
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{LABEL, "label"},
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{MOD, "mod"},
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{NIL, "nil"},
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{NOT, "not"},
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{OF, "of"},
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{OR, "or"},
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{PACKED, "packed"},
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{PROCEDURE, "procedure"},
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{PROGRAM, "program"},
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{RECORD, "record"},
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{REPEAT, "repeat"},
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{SET, "set"},
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{THEN, "then"},
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{TO, "to"},
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{TYPE, "type"},
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{UNTIL, "until"},
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{VAR, "var"},
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{WHILE, "while"},
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{WITH, "with"},
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{0, ""}
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};
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struct tokenname tkstandard[] = { /* standard identifiers */
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/* These are the only standard identifiers entered here, because
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* they can get a variable number of arguments, and there are
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* special syntaxrules in the grammar for them
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*/
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{READ, "read"},
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{READLN, "readln"},
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{WRITE, "write"},
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{WRITELN, "writeln"},
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{0, ""}
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};
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/* Some routines to handle tokennames */
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reserve(resv)
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register struct tokenname *resv;
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{
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/* The names of the tokens described in resv are entered
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as reserved words.
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*/
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register struct idf *p;
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while( resv->tn_symbol ) {
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p = str2idf(resv->tn_name, 0);
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if( !p ) fatal("out of Memory");
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p->id_reserved = resv->tn_symbol;
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resv++;
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}
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}
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