kirigaya/digital-vcd-parser
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basic FSM working

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This commit is contained in:
Aliaksei Chapyzhenka 2019-10-19 00:12:22 -07:00
parent 76d7c2bc62
commit 7a7204ecf4
3 changed files with 124 additions and 38 deletions
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55
bin/build.js
View File

@ -6,57 +6,48 @@ const llparse = require('llparse');
const llparseDot = require('llparse-dot');
const prj = 'vcd_parser';
const p = new llparse.LLParse(prj);
// Add custom uint8_t property to the state
p.property('i8', 'command');
const declaration = p.node('declaration');
const commandSpan = p.span(p.code.span('commandSpan'));
const inDeclaration = p.node('inDeclaration');
const enddefinitions = p.node('inDeclarationEnd');
const simulation = p.node('simulation');
const inSimulation = p.node('inSimulation');
// Add custom uint8_t property to the state
p.property('i8', 'declaration');
p.property('i8', 'simulation');
// Store method inside a custom property
const onDeclaration = p.invoke(p.code.store('declaration'), inDeclaration);
const onSimulation = p.invoke(p.code.store('simulation'), inSimulation);
declaration
.match([' ', '\n', '\t'], declaration)
.select({
'$comment': 0,
'$date': 1,
'$scope': 2,
'$timescale': 3,
'$upscope': 4,
'$var': 5,
'$version': 6
}, onDeclaration)
.match('$enddefinitions', enddefinitions)
.otherwise(p.error(1, 'Expected declaration'));
'$comment': 1, '$date': 2, '$scope': 3, '$timescale': 4,
'$upscope': 5, '$var': 6, '$version': 7
}, p.invoke(p.code.store('command'), commandSpan.start(inDeclaration)))
.select({
'$enddefinitions': 100
}, p.invoke(p.code.store('command'), commandSpan.start(enddefinitions)))
.otherwise(p.error(1, 'Expected declaration command'));
inDeclaration
.match('$end', declaration)
.otherwise(p.error(2, 'Expected end of declaration'));
.match('$end', commandSpan.end(declaration))
.skipTo(inDeclaration);
enddefinitions
.match('$end', simulation)
.otherwise(p.error(3, 'Expected end of all declaration'));
.match('$end', commandSpan.end(simulation))
.skipTo(enddefinitions);
simulation
.match([' ', '\n', '\t'], simulation)
.select({
'$dumpall': 0,
'$dumpoff': 1,
'$dumpon': 2,
'$dumpvars': 3,
'$comment': 4
}, onSimulation)
.otherwise(p.error(4, 'Expected simulation command'));
'$dumpall': 101, '$dumpoff': 102, '$dumpon': 103, '$dumpvars': 104,
'$comment': 1
}, p.invoke(p.code.store('command'), commandSpan.start(inSimulation)))
.otherwise(p.error(2, 'Expected simulation command'));
inSimulation
.match('$end', simulation)
.otherwise(p.error(5, 'Expected end simulation command'));
.match('$end', commandSpan.end(simulation))
.skipTo(inSimulation);
// Build

46
test/basic.js
View File

@ -14,6 +14,52 @@ describe('basic', () => {
console.log(cxt);
done();
});
it('fail: foo bar', done => {
const cxt = lib.init();
expect(lib.execute(cxt, ' foo bar ???', '')).to.eq(1);
expect(lib.getError(cxt)).to.eq(1);
expect(lib.getReason(cxt)).to.eq('Expected declaration command');
done();
});
it('$comment', done => {
const cxt = lib.init();
expect(lib.execute(cxt, ' \n $comment some text $end $comment more text $end ???', '')).to.eq(1);
expect(lib.getError(cxt)).to.eq(1);
expect(lib.getReason(cxt)).to.eq('Expected declaration command');
expect(lib.getCommand(cxt)).to.eq(1);
// expect(lib.getErrorPos(cxt)).to.eq('Expected declaration');
done();
});
it('$version', done => {
const cxt = lib.init();
expect(lib.execute(cxt, `
$version Generated by VerilatedVcd $end
$date Wed Sep 18 22:59:07 2019
$end
$timescale 1ns $end
$scope module top $end
$var wire 1 "}G clock $end
$scope module leaf $end
$var wire 64 "}> counter [63:0] $end
$upscope $end
$upscope $end
$enddefinitions $end
#1
0"}G
#2
1"}G
#3
0"}G
`, '')).to.eq(2);
expect(lib.getError(cxt)).to.eq(2);
expect(lib.getReason(cxt)).to.eq('Expected simulation command');
expect(lib.getCommand(cxt)).to.eq(100);
done();
});
});
/* eslint-env mocha */

53
vcd.c
View File

@ -33,7 +33,7 @@
}
#define ASSERT_STRING(name, var) \
char var[256]; \
char var[4096]; \
{ \
napi_value tmp; \
if (napi_coerce_to_string(env, name, &tmp) != napi_ok) { \
@ -41,7 +41,7 @@
return 0; \
} \
size_t result; \
if (napi_get_value_string_latin1(env, tmp, var, 256, &result) != napi_ok) { \
if (napi_get_value_string_latin1(env, tmp, var, 4096, &result) != napi_ok) { \
napi_throw(env, name); \
return 0; \
} \
@ -91,10 +91,59 @@ METHOD(execute) {
return res;
}
METHOD(getError) {
ASSERT_ARGC(1)
struct vcd_parser_s *state;
ASSERT_EXTERNAL(args[0], state)
napi_value res;
ASSERT(res, napi_create_int32(env, state->error, &res))
return res;
}
METHOD(getReason) {
ASSERT_ARGC(1)
struct vcd_parser_s *state;
ASSERT_EXTERNAL(args[0], state)
napi_value res;
ASSERT(res, napi_create_string_utf8(env, state->reason, NAPI_AUTO_LENGTH, &res))
return res;
}
METHOD(getErrorPos) {
ASSERT_ARGC(1)
struct vcd_parser_s *state;
ASSERT_EXTERNAL(args[0], state)
napi_value res;
ASSERT(res, napi_create_int32(env, state->error_pos, &res))
return res;
}
METHOD(getCommand) {
ASSERT_ARGC(1)
struct vcd_parser_s *state;
ASSERT_EXTERNAL(args[0], state)
napi_value res;
ASSERT(res, napi_create_int32(env, state->command, &res))
return res;
}
napi_value Init(napi_env env, napi_value exports) {
DECLARE_NAPI_METHOD("init", init)
DECLARE_NAPI_METHOD("execute", execute)
DECLARE_NAPI_METHOD("getError", getError)
DECLARE_NAPI_METHOD("getReason", getReason)
DECLARE_NAPI_METHOD("getErrorPos", getErrorPos)
DECLARE_NAPI_METHOD("getCommand", getCommand)
return exports;
}
int commandSpan(vcd_parser_t* s, const unsigned char* p, const unsigned char* endp) {
printf("%d:%.*s\n", s->command, (int)(endp - p - 4), p);
return 0;
};
NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)