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-rw-r--r--tests/examplefiles/rust_example.rs892
1 files changed, 191 insertions, 701 deletions
diff --git a/tests/examplefiles/rust_example.rs b/tests/examplefiles/rust_example.rs
index af791fbc..1c0a70c3 100644
--- a/tests/examplefiles/rust_example.rs
+++ b/tests/examplefiles/rust_example.rs
@@ -1,743 +1,233 @@
-
-#[doc = "json serialization"];
-
-import result::{result, ok, err};
-import io;
-import io::{reader_util, writer_util};
-import map;
-import map::hashmap;
-
-export json;
-export error;
-export to_writer;
-export to_str;
-export from_reader;
-export from_str;
-export eq;
-
-export num;
-export string;
-export boolean;
-export list;
-export dict;
-export null;
-
-#[doc = "Represents a json value"]
-enum json {
- num(float),
- string(str),
- boolean(bool),
- list([json]),
- dict(map::hashmap<str,json>),
- null,
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// based on:
+// http://shootout.alioth.debian.org/u32/benchmark.php?test=nbody&lang=java
+
+extern mod std;
+
+use core::os;
+
+// Using sqrt from the standard library is way slower than using libc
+// directly even though std just calls libc, I guess it must be
+// because the the indirection through another dynamic linker
+// stub. Kind of shocking. Might be able to make it faster still with
+// an llvm intrinsic.
+#[nolink]
+extern mod libc {
+ #[legacy_exports];
+ fn sqrt(n: float) -> float;
}
-type error = {
- line: uint,
- col: uint,
- msg: str,
-};
-
-#[doc = "Serializes a json value into a io::writer"]
-fn to_writer(wr: io::writer, j: json) {
- alt j {
- num(n) { wr.write_str(float::to_str(n, 6u)); }
- string(s) {
- wr.write_char('"');
- let mut escaped = "";
- str::chars_iter(s) { |c|
- alt c {
- '"' { escaped += "\\\""; }
- '\\' { escaped += "\\\\"; }
- '\x08' { escaped += "\\b"; }
- '\x0c' { escaped += "\\f"; }
- '\n' { escaped += "\\n"; }
- '\r' { escaped += "\\r"; }
- '\t' { escaped += "\\t"; }
- _ { escaped += str::from_char(c); }
- }
- };
- wr.write_str(escaped);
- wr.write_char('"');
- }
- boolean(b) {
- wr.write_str(if b { "true" } else { "false" });
- }
- list(v) {
- wr.write_char('[');
- let mut first = true;
- vec::iter(v) { |item|
- if !first {
- wr.write_str(", ");
- }
- first = false;
- to_writer(wr, item);
- };
- wr.write_char(']');
- }
- dict(d) {
- if d.size() == 0u {
- wr.write_str("{}");
- ret;
- }
-
- wr.write_str("{ ");
- let mut first = true;
- d.items { |key, value|
- if !first {
- wr.write_str(", ");
- }
- first = false;
- to_writer(wr, string(key));
- wr.write_str(": ");
- to_writer(wr, value);
- };
- wr.write_str(" }");
- }
- null {
- wr.write_str("null");
- }
- }
+fn main() {
+ let args = os::args();
+ let args = if os::getenv(~"RUST_BENCH").is_some() {
+ ~[~"", ~"4000000"]
+ } else if args.len() <= 1u {
+ ~[~"", ~"100000"]
+ } else {
+ args
+ };
+ let n = int::from_str(args[1]).get();
+ let mut bodies: ~[Body::props] = NBodySystem::make();
+ io::println(fmt!("%f", NBodySystem::energy(bodies)));
+ let mut i = 0;
+ while i < n {
+ NBodySystem::advance(bodies, 0.01);
+ i += 1;
+ }
+ io::println(fmt!("%f", NBodySystem::energy(bodies)));
}
-#[doc = "Serializes a json value into a string"]
-fn to_str(j: json) -> str {
- io::with_str_writer { |wr| to_writer(wr, j) }
-}
+mod NBodySystem {
+ use Body;
-type parser = {
- rdr: io::reader,
- mut ch: char,
- mut line: uint,
- mut col: uint,
-};
+ pub fn make() -> ~[Body::props] {
+ let mut bodies: ~[Body::props] =
+ ~[Body::sun(),
+ Body::jupiter(),
+ Body::saturn(),
+ Body::uranus(),
+ Body::neptune()];
-impl parser for parser {
- fn eof() -> bool { self.ch == -1 as char }
+ let mut px = 0.0;
+ let mut py = 0.0;
+ let mut pz = 0.0;
- fn bump() {
- self.ch = self.rdr.read_char();
+ let mut i = 0;
+ while i < 5 {
+ px += bodies[i].vx * bodies[i].mass;
+ py += bodies[i].vy * bodies[i].mass;
+ pz += bodies[i].vz * bodies[i].mass;
- if self.ch == '\n' {
- self.line += 1u;
- self.col = 1u;
- } else {
- self.col += 1u;
+ i += 1;
}
- }
- fn next_char() -> char {
- self.bump();
- self.ch
- }
+ // side-effecting
+ Body::offset_momentum(&mut bodies[0], px, py, pz);
- fn error<T>(msg: str) -> result<T, error> {
- err({ line: self.line, col: self.col, msg: msg })
+ return bodies;
}
- fn parse() -> result<json, error> {
- alt self.parse_value() {
- ok(value) {
- // Skip trailing whitespaces.
- self.parse_whitespace();
- // Make sure there is no trailing characters.
- if self.eof() {
- ok(value)
- } else {
- self.error("trailing characters")
+ pub fn advance(bodies: &mut [Body::props], dt: float) {
+ let mut i = 0;
+ while i < 5 {
+ let mut j = i + 1;
+ while j < 5 {
+ advance_one(&mut bodies[i],
+ &mut bodies[j], dt);
+ j += 1;
}
- }
- e { e }
- }
- }
- fn parse_value() -> result<json, error> {
- self.parse_whitespace();
-
- if self.eof() { ret self.error("EOF while parsing value"); }
-
- alt self.ch {
- 'n' { self.parse_ident("ull", null) }
- 't' { self.parse_ident("rue", boolean(true)) }
- 'f' { self.parse_ident("alse", boolean(false)) }
- '0' to '9' | '-' { self.parse_number() }
- '"' {
- alt self.parse_str() {
- ok(s) { ok(string(s)) }
- err(e) { err(e) }
- }
- }
- '[' { self.parse_list() }
- '{' { self.parse_object() }
- _ { self.error("invalid syntax") }
+ i += 1;
}
- }
- fn parse_whitespace() {
- while char::is_whitespace(self.ch) { self.bump(); }
- }
-
- fn parse_ident(ident: str, value: json) -> result<json, error> {
- if str::all(ident, { |c| c == self.next_char() }) {
- self.bump();
- ok(value)
- } else {
- self.error("invalid syntax")
+ i = 0;
+ while i < 5 {
+ move_(&mut bodies[i], dt);
+ i += 1;
}
}
- fn parse_number() -> result<json, error> {
- let mut neg = 1f;
+ pub fn advance_one(bi: &mut Body::props,
+ bj: &mut Body::props,
+ dt: float) unsafe {
+ let dx = bi.x - bj.x;
+ let dy = bi.y - bj.y;
+ let dz = bi.z - bj.z;
- if self.ch == '-' {
- self.bump();
- neg = -1f;
- }
+ let dSquared = dx * dx + dy * dy + dz * dz;
- let mut res = alt self.parse_integer() {
- ok(res) { res }
- err(e) { ret err(e); }
- };
+ let distance = ::libc::sqrt(dSquared);
+ let mag = dt / (dSquared * distance);
- if self.ch == '.' {
- alt self.parse_decimal(res) {
- ok(r) { res = r; }
- err(e) { ret err(e); }
- }
- }
-
- if self.ch == 'e' || self.ch == 'E' {
- alt self.parse_exponent(res) {
- ok(r) { res = r; }
- err(e) { ret err(e); }
- }
- }
+ bi.vx -= dx * bj.mass * mag;
+ bi.vy -= dy * bj.mass * mag;
+ bi.vz -= dz * bj.mass * mag;
- ok(num(neg * res))
+ bj.vx += dx * bi.mass * mag;
+ bj.vy += dy * bi.mass * mag;
+ bj.vz += dz * bi.mass * mag;
}
- fn parse_integer() -> result<float, error> {
- let mut res = 0f;
-
- alt self.ch {
- '0' {
- self.bump();
-
- // There can be only one leading '0'.
- alt self.ch {
- '0' to '9' { ret self.error("invalid number"); }
- _ {}
- }
- }
- '1' to '9' {
- while !self.eof() {
- alt self.ch {
- '0' to '9' {
- res *= 10f;
- res += ((self.ch as int) - ('0' as int)) as float;
-
- self.bump();
- }
- _ { break; }
- }
- }
- }
- _ { ret self.error("invalid number"); }
- }
-
- ok(res)
+ pub fn move_(b: &mut Body::props, dt: float) {
+ b.x += dt * b.vx;
+ b.y += dt * b.vy;
+ b.z += dt * b.vz;
}
- fn parse_decimal(res: float) -> result<float, error> {
- self.bump();
+ pub fn energy(bodies: &[Body::props]) -> float unsafe {
+ let mut dx;
+ let mut dy;
+ let mut dz;
+ let mut distance;
+ let mut e = 0.0;
- // Make sure a digit follows the decimal place.
- alt self.ch {
- '0' to '9' {}
- _ { ret self.error("invalid number"); }
- }
-
- let mut res = res;
- let mut dec = 1f;
- while !self.eof() {
- alt self.ch {
- '0' to '9' {
- dec /= 10f;
- res += (((self.ch as int) - ('0' as int)) as float) * dec;
-
- self.bump();
- }
- _ { break; }
- }
- }
-
- ok(res)
- }
-
- fn parse_exponent(res: float) -> result<float, error> {
- self.bump();
+ let mut i = 0;
+ while i < 5 {
+ e +=
+ 0.5 * bodies[i].mass *
+ (bodies[i].vx * bodies[i].vx + bodies[i].vy * bodies[i].vy
+ + bodies[i].vz * bodies[i].vz);
- let mut res = res;
- let mut exp = 0u;
- let mut neg_exp = false;
+ let mut j = i + 1;
+ while j < 5 {
+ dx = bodies[i].x - bodies[j].x;
+ dy = bodies[i].y - bodies[j].y;
+ dz = bodies[i].z - bodies[j].z;
- alt self.ch {
- '+' { self.bump(); }
- '-' { self.bump(); neg_exp = true; }
- _ {}
- }
-
- // Make sure a digit follows the exponent place.
- alt self.ch {
- '0' to '9' {}
- _ { ret self.error("invalid number"); }
- }
-
- while !self.eof() {
- alt self.ch {
- '0' to '9' {
- exp *= 10u;
- exp += (self.ch as uint) - ('0' as uint);
+ distance = ::libc::sqrt(dx * dx + dy * dy + dz * dz);
+ e -= bodies[i].mass * bodies[j].mass / distance;
- self.bump();
- }
- _ { break; }
+ j += 1;
}
- }
- let exp = float::pow_with_uint(10u, exp);
- if neg_exp {
- res /= exp;
- } else {
- res *= exp;
+ i += 1;
}
+ return e;
- ok(res)
- }
-
- fn parse_str() -> result<str, error> {
- let mut escape = false;
- let mut res = "";
-
- while !self.eof() {
- self.bump();
-
- if (escape) {
- alt self.ch {
- '"' { str::push_char(res, '"'); }
- '\\' { str::push_char(res, '\\'); }
- '/' { str::push_char(res, '/'); }
- 'b' { str::push_char(res, '\x08'); }
- 'f' { str::push_char(res, '\x0c'); }
- 'n' { str::push_char(res, '\n'); }
- 'r' { str::push_char(res, '\r'); }
- 't' { str::push_char(res, '\t'); }
- 'u' {
- // Parse \u1234.
- let mut i = 0u;
- let mut n = 0u;
- while i < 4u {
- alt self.next_char() {
- '0' to '9' {
- n = n * 10u +
- (self.ch as uint) - ('0' as uint);
- }
- _ { ret self.error("invalid \\u escape"); }
- }
- i += 1u;
- }
-
- // Error out if we didn't parse 4 digits.
- if i != 4u {
- ret self.error("invalid \\u escape");
- }
-
- str::push_char(res, n as char);
- }
- _ { ret self.error("invalid escape"); }
- }
- escape = false;
- } else if self.ch == '\\' {
- escape = true;
- } else {
- if self.ch == '"' {
- self.bump();
- ret ok(res);
- }
- str::push_char(res, self.ch);
- }
- }
-
- self.error("EOF while parsing string")
- }
-
- fn parse_list() -> result<json, error> {
- self.bump();
- self.parse_whitespace();
-
- let mut values = [];
-
- if self.ch == ']' {
- self.bump();
- ret ok(list(values));
- }
-
- loop {
- alt self.parse_value() {
- ok(v) { vec::push(values, v); }
- e { ret e; }
- }
-
- self.parse_whitespace();
- if self.eof() {
- ret self.error("EOF while parsing list");
- }
-
- alt self.ch {
- ',' { self.bump(); }
- ']' { self.bump(); ret ok(list(values)); }
- _ { ret self.error("expecting ',' or ']'"); }
- }
- };
- }
-
- fn parse_object() -> result<json, error> {
- self.bump();
- self.parse_whitespace();
-
- let values = map::str_hash();
-
- if self.ch == '}' {
- self.bump();
- ret ok(dict(values));
- }
-
- while !self.eof() {
- self.parse_whitespace();
-
- if self.ch != '"' {
- ret self.error("key must be a string");
- }
-
- let key = alt self.parse_str() {
- ok(key) { key }
- err(e) { ret err(e); }
- };
-
- self.parse_whitespace();
-
- if self.ch != ':' {
- if self.eof() { break; }
- ret self.error("expecting ':'");
- }
- self.bump();
-
- alt self.parse_value() {
- ok(value) { values.insert(key, value); }
- e { ret e; }
- }
- self.parse_whitespace();
-
- alt self.ch {
- ',' { self.bump(); }
- '}' { self.bump(); ret ok(dict(values)); }
- _ {
- if self.eof() { break; }
- ret self.error("expecting ',' or '}'");
- }
- }
- }
-
- ret self.error("EOF while parsing object");
- }
-}
-
-#[doc = "Deserializes a json value from an io::reader"]
-fn from_reader(rdr: io::reader) -> result<json, error> {
- let parser = {
- rdr: rdr,
- mut ch: rdr.read_char(),
- mut line: 1u,
- mut col: 1u,
- };
-
- parser.parse()
-}
-
-#[doc = "Deserializes a json value from a string"]
-fn from_str(s: str) -> result<json, error> {
- io::with_str_reader(s, from_reader)
-}
-
-#[doc = "Test if two json values are equal"]
-fn eq(value0: json, value1: json) -> bool {
- alt (value0, value1) {
- (num(f0), num(f1)) { f0 == f1 }
- (string(s0), string(s1)) { s0 == s1 }
- (boolean(b0), boolean(b1)) { b0 == b1 }
- (list(l0), list(l1)) { vec::all2(l0, l1, eq) }
- (dict(d0), dict(d1)) {
- if d0.size() == d1.size() {
- let mut equal = true;
- d0.items { |k, v0|
- alt d1.find(k) {
- some(v1) {
- if !eq(v0, v1) { equal = false; } }
- none { equal = false; }
- }
- };
- equal
- } else {
- false
- }
- }
- (null, null) { true }
- _ { false }
}
}
-#[cfg(test)]
-mod tests {
- fn mk_dict(items: [(str, json)]) -> json {
- let d = map::str_hash();
-
- vec::iter(items) { |item|
- let (key, value) = item;
- d.insert(key, value);
- };
-
- dict(d)
- }
-
- #[test]
- fn test_write_null() {
- assert to_str(null) == "null";
- }
-
- #[test]
- fn test_write_num() {
- assert to_str(num(3f)) == "3";
- assert to_str(num(3.1f)) == "3.1";
- assert to_str(num(-1.5f)) == "-1.5";
- assert to_str(num(0.5f)) == "0.5";
- }
-
- #[test]
- fn test_write_str() {
- assert to_str(string("")) == "\"\"";
- assert to_str(string("foo")) == "\"foo\"";
- }
-
- #[test]
- fn test_write_bool() {
- assert to_str(boolean(true)) == "true";
- assert to_str(boolean(false)) == "false";
- }
-
- #[test]
- fn test_write_list() {
- assert to_str(list([])) == "[]";
- assert to_str(list([boolean(true)])) == "[true]";
- assert to_str(list([
- boolean(false),
- null,
- list([string("foo\nbar"), num(3.5f)])
- ])) == "[false, null, [\"foo\\nbar\", 3.5]]";
- }
-
- #[test]
- fn test_write_dict() {
- assert to_str(mk_dict([])) == "{}";
- assert to_str(mk_dict([("a", boolean(true))])) == "{ \"a\": true }";
- assert to_str(mk_dict([
- ("a", boolean(true)),
- ("b", list([
- mk_dict([("c", string("\x0c\r"))]),
- mk_dict([("d", string(""))])
- ]))
- ])) ==
- "{ " +
- "\"a\": true, " +
- "\"b\": [" +
- "{ \"c\": \"\\f\\r\" }, " +
- "{ \"d\": \"\" }" +
- "]" +
- " }";
+mod Body {
+ use Body;
+
+ pub const PI: float = 3.141592653589793;
+ pub const SOLAR_MASS: float = 39.478417604357432;
+ // was 4 * PI * PI originally
+ pub const DAYS_PER_YEAR: float = 365.24;
+
+ pub type props =
+ {mut x: float,
+ mut y: float,
+ mut z: float,
+ mut vx: float,
+ mut vy: float,
+ mut vz: float,
+ mass: float};
+
+ pub fn jupiter() -> Body::props {
+ return {mut x: 4.84143144246472090e+00,
+ mut y: -1.16032004402742839e+00,
+ mut z: -1.03622044471123109e-01,
+ mut vx: 1.66007664274403694e-03 * DAYS_PER_YEAR,
+ mut vy: 7.69901118419740425e-03 * DAYS_PER_YEAR,
+ mut vz: -6.90460016972063023e-05 * DAYS_PER_YEAR,
+ mass: 9.54791938424326609e-04 * SOLAR_MASS};
+ }
+
+ pub fn saturn() -> Body::props {
+ return {mut x: 8.34336671824457987e+00,
+ mut y: 4.12479856412430479e+00,
+ mut z: -4.03523417114321381e-01,
+ mut vx: -2.76742510726862411e-03 * DAYS_PER_YEAR,
+ mut vy: 4.99852801234917238e-03 * DAYS_PER_YEAR,
+ mut vz: 2.30417297573763929e-05 * DAYS_PER_YEAR,
+ mass: 2.85885980666130812e-04 * SOLAR_MASS};
+ }
+
+ pub fn uranus() -> Body::props {
+ return {mut x: 1.28943695621391310e+01,
+ mut y: -1.51111514016986312e+01,
+ mut z: -2.23307578892655734e-01,
+ mut vx: 2.96460137564761618e-03 * DAYS_PER_YEAR,
+ mut vy: 2.37847173959480950e-03 * DAYS_PER_YEAR,
+ mut vz: -2.96589568540237556e-05 * DAYS_PER_YEAR,
+ mass: 4.36624404335156298e-05 * SOLAR_MASS};
+ }
+
+ pub fn neptune() -> Body::props {
+ return {mut x: 1.53796971148509165e+01,
+ mut y: -2.59193146099879641e+01,
+ mut z: 1.79258772950371181e-01,
+ mut vx: 2.68067772490389322e-03 * DAYS_PER_YEAR,
+ mut vy: 1.62824170038242295e-03 * DAYS_PER_YEAR,
+ mut vz: -9.51592254519715870e-05 * DAYS_PER_YEAR,
+ mass: 5.15138902046611451e-05 * SOLAR_MASS};
+ }
+
+ pub fn sun() -> Body::props {
+ return {mut x: 0.0,
+ mut y: 0.0,
+ mut z: 0.0,
+ mut vx: 0.0,
+ mut vy: 0.0,
+ mut vz: 0.0,
+ mass: SOLAR_MASS};
+ }
+
+ pub fn offset_momentum(props: &mut Body::props,
+ px: float, py: float, pz: float) {
+ props.vx = -px / SOLAR_MASS;
+ props.vy = -py / SOLAR_MASS;
+ props.vz = -pz / SOLAR_MASS;
}
- #[test]
- fn test_trailing_characters() {
- assert from_str("nulla") ==
- err({line: 1u, col: 5u, msg: "trailing characters"});
- assert from_str("truea") ==
- err({line: 1u, col: 5u, msg: "trailing characters"});
- assert from_str("falsea") ==
- err({line: 1u, col: 6u, msg: "trailing characters"});
- assert from_str("1a") ==
- err({line: 1u, col: 2u, msg: "trailing characters"});
- assert from_str("[]a") ==
- err({line: 1u, col: 3u, msg: "trailing characters"});
- assert from_str("{}a") ==
- err({line: 1u, col: 3u, msg: "trailing characters"});
- }
-
- #[test]
- fn test_read_identifiers() {
- assert from_str("n") ==
- err({line: 1u, col: 2u, msg: "invalid syntax"});
- assert from_str("nul") ==
- err({line: 1u, col: 4u, msg: "invalid syntax"});
-
- assert from_str("t") ==
- err({line: 1u, col: 2u, msg: "invalid syntax"});
- assert from_str("truz") ==
- err({line: 1u, col: 4u, msg: "invalid syntax"});
-
- assert from_str("f") ==
- err({line: 1u, col: 2u, msg: "invalid syntax"});
- assert from_str("faz") ==
- err({line: 1u, col: 3u, msg: "invalid syntax"});
-
- assert from_str("null") == ok(null);
- assert from_str("true") == ok(boolean(true));
- assert from_str("false") == ok(boolean(false));
- assert from_str(" null ") == ok(null);
- assert from_str(" true ") == ok(boolean(true));
- assert from_str(" false ") == ok(boolean(false));
- }
-
- #[test]
- fn test_read_num() {
- assert from_str("+") ==
- err({line: 1u, col: 1u, msg: "invalid syntax"});
- assert from_str(".") ==
- err({line: 1u, col: 1u, msg: "invalid syntax"});
-
- assert from_str("-") ==
- err({line: 1u, col: 2u, msg: "invalid number"});
- assert from_str("00") ==
- err({line: 1u, col: 2u, msg: "invalid number"});
- assert from_str("1.") ==
- err({line: 1u, col: 3u, msg: "invalid number"});
- assert from_str("1e") ==
- err({line: 1u, col: 3u, msg: "invalid number"});
- assert from_str("1e+") ==
- err({line: 1u, col: 4u, msg: "invalid number"});
-
- assert from_str("3") == ok(num(3f));
- assert from_str("3.1") == ok(num(3.1f));
- assert from_str("-1.2") == ok(num(-1.2f));
- assert from_str("0.4") == ok(num(0.4f));
- assert from_str("0.4e5") == ok(num(0.4e5f));
- assert from_str("0.4e+15") == ok(num(0.4e15f));
- assert from_str("0.4e-01") == ok(num(0.4e-01f));
- assert from_str(" 3 ") == ok(num(3f));
- }
-
- #[test]
- fn test_read_str() {
- assert from_str("\"") ==
- err({line: 1u, col: 2u, msg: "EOF while parsing string"});
- assert from_str("\"lol") ==
- err({line: 1u, col: 5u, msg: "EOF while parsing string"});
-
- assert from_str("\"\"") == ok(string(""));
- assert from_str("\"foo\"") == ok(string("foo"));
- assert from_str("\"\\\"\"") == ok(string("\""));
- assert from_str("\"\\b\"") == ok(string("\x08"));
- assert from_str("\"\\n\"") == ok(string("\n"));
- assert from_str("\"\\r\"") == ok(string("\r"));
- assert from_str("\"\\t\"") == ok(string("\t"));
- assert from_str(" \"foo\" ") == ok(string("foo"));
- }
-
- #[test]
- fn test_read_list() {
- assert from_str("[") ==
- err({line: 1u, col: 2u, msg: "EOF while parsing value"});
- assert from_str("[1") ==
- err({line: 1u, col: 3u, msg: "EOF while parsing list"});
- assert from_str("[1,") ==
- err({line: 1u, col: 4u, msg: "EOF while parsing value"});
- assert from_str("[1,]") ==
- err({line: 1u, col: 4u, msg: "invalid syntax"});
- assert from_str("[6 7]") ==
- err({line: 1u, col: 4u, msg: "expecting ',' or ']'"});
-
- assert from_str("[]") == ok(list([]));
- assert from_str("[ ]") == ok(list([]));
- assert from_str("[true]") == ok(list([boolean(true)]));
- assert from_str("[ false ]") == ok(list([boolean(false)]));
- assert from_str("[null]") == ok(list([null]));
- assert from_str("[3, 1]") == ok(list([num(3f), num(1f)]));
- assert from_str("\n[3, 2]\n") == ok(list([num(3f), num(2f)]));
- assert from_str("[2, [4, 1]]") ==
- ok(list([num(2f), list([num(4f), num(1f)])]));
- }
-
- #[test]
- fn test_read_dict() {
- assert from_str("{") ==
- err({line: 1u, col: 2u, msg: "EOF while parsing object"});
- assert from_str("{ ") ==
- err({line: 1u, col: 3u, msg: "EOF while parsing object"});
- assert from_str("{1") ==
- err({line: 1u, col: 2u, msg: "key must be a string"});
- assert from_str("{ \"a\"") ==
- err({line: 1u, col: 6u, msg: "EOF while parsing object"});
- assert from_str("{\"a\"") ==
- err({line: 1u, col: 5u, msg: "EOF while parsing object"});
- assert from_str("{\"a\" ") ==
- err({line: 1u, col: 6u, msg: "EOF while parsing object"});
-
- assert from_str("{\"a\" 1") ==
- err({line: 1u, col: 6u, msg: "expecting ':'"});
- assert from_str("{\"a\":") ==
- err({line: 1u, col: 6u, msg: "EOF while parsing value"});
- assert from_str("{\"a\":1") ==
- err({line: 1u, col: 7u, msg: "EOF while parsing object"});
- assert from_str("{\"a\":1 1") ==
- err({line: 1u, col: 8u, msg: "expecting ',' or '}'"});
- assert from_str("{\"a\":1,") ==
- err({line: 1u, col: 8u, msg: "EOF while parsing object"});
-
- assert eq(result::get(from_str("{}")), mk_dict([]));
- assert eq(result::get(from_str("{\"a\": 3}")),
- mk_dict([("a", num(3.0f))]));
-
- assert eq(result::get(from_str("{ \"a\": null, \"b\" : true }")),
- mk_dict([("a", null), ("b", boolean(true))]));
- assert eq(result::get(from_str("\n{ \"a\": null, \"b\" : true }\n")),
- mk_dict([("a", null), ("b", boolean(true))]));
- assert eq(result::get(from_str("{\"a\" : 1.0 ,\"b\": [ true ]}")),
- mk_dict([
- ("a", num(1.0)),
- ("b", list([boolean(true)]))
- ]));
- assert eq(result::get(from_str(
- "{" +
- "\"a\": 1.0, " +
- "\"b\": [" +
- "true," +
- "\"foo\\nbar\", " +
- "{ \"c\": {\"d\": null} } " +
- "]" +
- "}")),
- mk_dict([
- ("a", num(1.0f)),
- ("b", list([
- boolean(true),
- string("foo\nbar"),
- mk_dict([
- ("c", mk_dict([("d", null)]))
- ])
- ]))
- ]));
- }
-
- #[test]
- fn test_multiline_errors() {
- assert from_str("{\n \"foo\":\n \"bar\"") ==
- err({line: 3u, col: 8u, msg: "EOF while parsing object"});
- }
}
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