mirror of https://github.com/ksherlock/mpw.git
130 lines
2.8 KiB
Plaintext
130 lines
2.8 KiB
Plaintext
%token_prefix tk
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%name TemplateParse
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%extra_argument { Debug::TemplateParseInfo *info }
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%include {
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#include <string>
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#include <stdlib.h>
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#include <cassert>
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#include <cstddef>
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#include "template.h"
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using namespace Debug;
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}
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%type struct_fields { FieldEntry * }
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%type struct_field { FieldEntry * }
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start ::= templates.
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templates ::= templates struct.
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templates ::= templates typedef.
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templates ::= .
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// typedeffing arrays or pointers is not allowed.
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typedef ::= TYPEDEF type(a) IDENTIFIER(b). {
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CreateTypedef((std::string *)b, a, info);
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}
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struct ::= STRUCT IDENTIFIER(a) LBRACE struct_fields(b) RBRACE SEMI.
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{
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CreateTemplate((std::string *)a, b, info);
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}
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struct_fields(rhs) ::= struct_fields(a) struct_field(b). {
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// reverse order?
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b->next = a;
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rhs = b;
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}
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struct_fields(rhs) ::= struct_field(a). {
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rhs = a;
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}
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struct_field(rhs) ::= type(a) IDENTIFIER(b) array_count(c) SEMI.
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{
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FieldEntry *e = (FieldEntry *)calloc(sizeof(FieldEntry), 1);
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e->name = (std::string *)b;
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e->type = a;
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e->count = c;
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rhs = e;
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}
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struct_field(rhs) ::= opt_volatile TEMPLATE(a) opt_star(star) IDENTIFIER(b) array_count(c) SEMI. {
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FieldEntry *e = (FieldEntry *)calloc(sizeof(FieldEntry), 1);
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e->name = (std::string *)b;
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e->type = star ? kStructPtr : kStruct;
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e->tmpl = (Template)a;
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e->count = c;
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rhs = e;
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}
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%type array_count { int }
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array_count(rhs) ::= . { rhs = 0; }
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array_count(rhs) ::= LBRACKET INTEGER(a) RBRACKET. {
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int i = (int)(ptrdiff_t)a;
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if (i == 0) {
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fprintf(stderr, "Template error: line %u: 0-sized arrays are not allowed.\n",
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info->LineNumber);
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i = 1;
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}
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rhs = i;
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}
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%type type { int }
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type(rhs) ::= opt_volatile typecode(a). { rhs = a; }
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// this is an expected error...
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type(rhs) ::= opt_volatile IDENTIFIER(xxx). {
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// ugh, Lemon will blindly replace text within a string.
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fprintf(stderr, "Template error: line %u: %s is not a known type.\n",
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info->LineNumber, ((std::string *)xxx)->c_str());
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rhs = 'i';
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}
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opt_volatile ::= .
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opt_volatile ::= VOLATILE.
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%type typecode { int }
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typecode(rhs) ::= SIGNED. { rhs = kSInt32; }
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typecode(rhs) ::= UNSIGNED. {rhs = kUInt32; }
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typecode(rhs) ::= opt_signed CHAR. { rhs = kSInt8; }
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typecode(rhs) ::= UNSIGNED CHAR. { rhs = kUInt8; }
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typecode(rhs) ::= opt_signed SHORT. { rhs = kSInt16; }
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typecode(rhs) ::= UNSIGNED SHORT. { rhs = kUInt16; }
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typecode(rhs) ::= opt_signed LONG opt_int. { rhs = kSInt32; }
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typecode(rhs) ::= UNSIGNED LONG opt_int. { rhs = kUInt32; }
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typecode(rhs) ::= opt_signed LONG LONG. { rhs = kSInt64; }
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typecode(rhs) ::= UNSIGNED LONG LONG. { rhs = kUInt64; }
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typecode(rhs) ::= TYPECODE(a). { rhs = (int)(ptrdiff_t)a; }
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/* pointers are not fully supported yet */
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typecode(rhs) ::= VOID STAR. { rhs = kVoidPtr; }
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opt_signed ::= .
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opt_signed ::= SIGNED.
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opt_int ::= .
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opt_int ::= INT.
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%type opt_star { int }
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opt_star(rhs) ::= . { rhs = 0; }
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opt_star(rhs) ::= STAR. { rhs = 1; }
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